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SR5500 User Manual

1. Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 35 8 to 97 8 dB Hz 65 8 0 1 The actual range will vary based on the state of other system parameters UNIT CHAN INTerferer EBNO lt real gt UNIT CHAN INTerferer EBNO SPIRENT mme NLMICALIONS CHAPTER SIX COMMAND REFERENCE 177 Set the Eb No ratio for the given channel of the given unit The corresponding query returns the set Eb No ratio in dB Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 4 to 58 dB 26 0 1 The actual range will vary based on the state of other system parameters UNIT CHAN INTerferer MODe lt string gt UNIT CHAN INTerferer MODe Set the Interferer Range Selection RST Resolution Mode for the given channel of the given unit Parameter 1 to 4 unit 1 1 1 to 2 channel 1 lt string gt OFF AWGN OFF UNIT CHAN INTerferer NBWidth lt real gt UNIT CHAN INTerferer NBWidth Set the Interferer Bandwidth for the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 1 625 3 25 6 5 13 26 MHz 6 5 UNIT CHAN INTerferer RBWidth lt real gt UNIT
2. EEEE 00000 0000 ofj o o o gt 2 SSi ARI FOE PER EL o S oS 3S 5 te e e t t 5 o oa re 5 t t t G Path Matrix Valid Copy To All Paths Clear All Paths Import Export View Complex Figure 2 118 Non MIMO Complex Correlation Window The complete channel to channel complex correlation matrix displays in the Complex Correlation window The matrix can be specified for each path for up to 12 paths in a 2 channel setup or 24 paths in a single channel setup by selecting the appropriate folder tab at the top of the window Enter the values in the lower left triangle of the matrix The upper right triangle displays the complex conjugate of the lower left reflected about the main diagonal enforcing the matrix to be Hermitian As you enter values the matrix is tested for positive definiteness and the Path Matrix Status updates If the test for positive definiteness fails the Path Matrix Status displays Invalid in red if it passes it displays Valid in green Each complex value is tested to make sure the magnitude is less than or equal to one An error box displays if the magnitude of any complex value entered is greater than one 1 You can enter a different complex matrix for each path To lock the paths together select the Apply To All Paths checkbox The displayed matrix then applies to all pa
3. Pa rameter U1C1_U1C2 U2C1_U2C2 R5 3 UNITS Dual Channel Index R5 R7 Parameter U1C2_U2C1 U1C1_U2C2 U1C2_U2C2 U2C1_U2C2 U1C2_U3C1 Index R Parameter U1C1_U3C2 U1C2_U3C2 U2C1_U3C2 U2C2_ U3C2 13 4 UNITS Dual Channel Index Parameter Index RO U1C1 U1C2 R10 U1C1_U2C1 U1C2_U2C1 R1 R11 Parameter Index U1C1_U3C2 R20 U1C2_U3C2 U2C1_U3C2 U1C1_U2C2 U2C2_U3C2 U1C2 U2C2 R14 U3C1 U3C2 U1C1 U3C1 R16 U1C2 UAC1 U1C2_U3C1 U2C1_U3C1 U2C2_U3C1 R12 R13 S R14 7 R16 R17 R18 R19 U2C1_U4C1 U2C2_U4C1 U3C1_U4C1 R21 R23 R27 E Parameter U3C2_U4C1 U1C1_U4C2 U1C2_U4C2 U2C1_U4C2 U2C2_U4C2 U3C1_U4C2 U3C2_U4C2 U4C1_U4C2 2 UNITS Single Channel Index Pa rameter RO U1C1_U2C1 pe SPIRENT mumcations nspired Innovation 162 SR5500 USER MANUAL 3 UNITS Single Channel Index Parameter R1 U1C1_U3C1 R2 U2C1_U3C1 4 UNITS Single Channel Index Parameter U1C1_U2C1 U1C1_U4C1 ee U4C1 rs E e U4C1 CORRelation MATRix PATH lt real list gt CORRelation MATRix PATH Sets the channel correlation parameters for a given path in the system This command should be used only after the CORRElation TYPe is set to SUITe and CORRel
4. 4 RP Gard Loewe Teacher WTS Uai Unde Test WG Linn Facng Uecorelated Statue Mot Correct Figure 2 74 Interference Editor 4x4 MIMO Mode 2 7 3 2 Enabling the Interference To enable the Interference select AWGN from the Interference State list box Interferer State AWGN Figure 2 75 Interference State Setting NOTE The Channel Bypass feature overrides the Interference State selection If the Channel is bypassed there will be no additive impairments present at the output of the SR5500 2 7 3 3 Setting the Interference Level There are three ways to configure the relative level of the interferer to the carrier C N C No and Eb No The Ratio parameter specifies the relative power of the interference to the power of the carrier based on the selected units C N C No or Eb No Ratio 30 0 dE Figure 2 76 Ratio Setting The AWGN Bandwidth parameter specifies the spectral width of the AWGN interference generated from a list box e SPIRENT spires innovation Communications CHAPTER TWO OPERATION REFERENCE 71 AWGN Bandwidth Receiver Bandwidth Bit Rate Figure 2 77 AGWN Bandwidth Setting NOTE The AWGN bandwidth most be greater or equal to the set Receiver Bandwidth The Receiver Bandwidth parameter determines the bandwidth of AWGN interference used when determining the impairment level Receiver Bandwidth 3 ou MHz Figure 2 78 Receiver Bandwidth Setting The Bit Rat
5. SUITe 4 SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE SUITE UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH STATe FPSHAPe FSHift VALue lt real gt FSHift VALue FSHift FSHift FSHift FSHift FSHift FSHift FSHift FSHift FSHift FSHift FSHift MOD MOD HST HST HST sHST SHST HSE HST HST H
6. 2 MENU NAVIGATION KEYS Available on SR5500M Only These keys are reserved for future use CAUTION The RF IN and OUT Ports can accept a limited power range refer to the technical specifications to ensure absolute maximum levels are not exceeded 1 4 2 Rear Panel Description Figure 1 8 SR5500 Rear Panel EE SPIRENT inspired innovation Communications 16 SR5500 USER MANUAL 7 SPIRENT Communications D QD W e INL NT 5 th SKS F Le CROSS OS OORLOG LALSOSLACSOSSSCES a AAY 72 AN i o LR 9900000000 T RRQ GROPORC ET EE ET J l Sa858o Fm S F TTF CEE bd SWE IK wii aj Tec ou O20202020 o262020060606060S o20200 026262020620 a MeF a aa a aat a aat a a a aah a aal a G20200200 1 0 0 070 0 0708080 e 3 de 02020 1B 60000 ES Eg fa 5 JA WE G7 A2 F S9 EE 2 3 DO y Figure 1 9 SR5500M Rear Panel Rear Panel Controls 10 MHz IN o BNC Type Connector 50 Q Accepts an externally supplied 10 MHz sine wave reference signal which can be used to drive the internal signal processing circuitry of the SR5500 10 MHz OUT BNC Type Connector 50 Q Provides a 10 MHz sine wave reference signal as an output CH 1 and CH 2 IF IN BNC Type Connector 50 Q Reserved for future use CH 1 and CH 2 Q IN BNC Type Connector 50 Q Reserved for future use
7. 360 0 to 360 0 degrees 0 1 degrees ei SPIRENT inspires novation Communications 206 SR5500 USER MANUAL 7 5 13 Path Rayleigh Fading Correlation Modes Envelope Component Complex Range 0 0 to 1 0 Correlation Matrices All semi positive definite matrices Resolution Envelope Component Correlation 0 01 Complex Correlation 0 0001 7 6 Interference Generation Characteristics Independent Interference Generators per Channel 1 7 6 1 Interference Characteristics Type AWGN BW 26 13 6 5 3 25 1 625 MHz Refer to the Technical Reference for the spectral shape of the AWGN over the aforementioned bandwidths Ratio Units C N in dB C No in dB Hz Eb No in dB Hz Ratio Range 30 to 32 dB in C N units NOTE The range for the ratio is dependent on the carrier output conditions 7 6 2 AWGN Correlation Range 0 0 or 1 0 7 6 3 AWGN Performance Flatness across specified noise bandwidth Noise Bandwidth lt 13 MHz lt 0 5 dB Peak Ripple Noise Bandwidth lt 26 MHz lt 1 dB Peak Ripple Saee S P R E NT nspired innovation Communications CHAPTER SEVEN TECHNICAL SPECIFICATIONS 207 Accuracy Measured relative to a user signal which is flat in power across the receiver bandwidth Output power set to maximum All Receiver Bandwidths C N Ratio from 30 to 25 dB 0 4 dB C N Ratio from 25 to 20 dB 0 2 dB C N Ratio from 20 to 15 dB 0 1 dB C N Ratio from 15
8. RST Resolution lt string gt SINGle DUAL RXDiversity TXDiversity MIMO DUAL MIMO4x4 UNIT EMULation PAUSe Pause the player for the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 UNIT EMULation PLAY Play the player for the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 UNIT EMULation STOP Stop the player for the given unit M r S PI RENT ses novation cations 188 SR5500 USER MANUAL Parameter Range Selection RST Resolution 1 to 4 unit 1 1 UNIT EMULation STATe Query the Player Status for the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 UNIT MIMO PHSHift lt Sink Index gt lt Source Index gt lt real gt UNIT MIMO PHSHift lt Sink Index gt lt Source Index gt Set the Phase of the MIMO Sub Channels This command is available only in MIMO mode 2x2 4x4 Parameter Range Selection RST Resolution 1 to 4 unit 1 1 lt Sink Index gt 1 to 2 2x2 MIMO 1 1 1 to 4 4x4 MIMO lt Source Index gt 1 to 2 2x2 MIMO 1 1 1 to 4 4x4 MIMO lt real gt O to 360 deg O 0 1 UNIT MIMO RELPower lt Sink Index gt lt Source Index gt lt real gt UNIT MIMO RELPower lt Sink Index gt lt Source Index gt Set the Relative Power between the
9. 7 5 8 Fading Power Spectrum Programmable shapes Fading Repetition Interval Fading Velocity Range fe 900 MHz Resolution Fading Doppler Frequency Range Resolution Accuracy 1 to 64 O to 2000 usec 0 1 nsec 0 001 to 60 sec 0 001 sec 0 5 dB lt 2 5 deviation theoretical LCR curve of the simulated vehicle velocity Classical 6 dB Flat Classical 3 dB Rounded Rounded 12 dB gt 24 hours 0 1 to 2398 33 km h 0 1 km h 0 01 to 2000 Hz 0 01 Hz 0 25 of set Fading Doppler ei SPIRENT inspires novation Communications 204 SR5500 USER MANUAL 7 5 9 Rician Fading Characteristics Line of Site LOS Arrival Angle Range O to 360 degrees Resolution 0 1 degrees Rician K Factor Range 30 to 30 dB Resolution 0 1 dB 7 5 10 Log Normal Fading Characteristics Enabled Yes No Rate Range 0 00 to 20 00 Hz Resolution OT Hz Standard Deviation Range Oto 12 dB Resolution 1 dB Minimum Actual Amplitude Variation 2 sigma 2 Standard Deviation 7 5 11 Dynamic Environment Emulation DEE Channel Modes Available in Single Dual Rx Diversity TX Diversity and 2x2 MIMO Channel Modes Playback Modes Play Once Loop Continuously Trigger Modes Free run Triggered Play Settable Parameters State Duration Output Power Level AWGN Status ON OFF C N Ratio Path Status ON OFF Path Delay Path Relative Loss Rician Line of Sight Angle of Arrival Rician K Factor
10. Measured Input Level Shows the constantly measured and displayed input level Calculated Output Level The average output power is calculated and displayed based on the measured input level The output level measurement assumes a valid path set up In an extreme example with all paths turned off the output power displayed will be incorrect Set Output Level Displays the set output level for the current state pe SPIRENT inspired innovation Communications 90 SR5500 USER MANUAL 2 8 4 Using DEE with Multiple SR5500s TestKit is capable of dynamically changing the current state of Path and Channel parameters simultaneously on up to four SR5500 units Refer to Section 2 13 on page 96 for more information on multi unit control To run DEE simultaneously on up to four systems create an STB file for each unit using the Excel template and select the files in the main DEE view The STB files for all of the units must have the same number of states The State Duration is determined from the State Duration information in the STB file for Unit 1 State duration information provided in other STB files is ignored 2 9 Using the SR5500 with 6 GHz 6GHz EX Option j RENT SPI MUM CONS The SR5500 6 GHz EX RF Converter can increase the frequency range of the SR5500 The SR5500 6 GHz option supports the Upper Band 4100 to 6000 MHz The SR5500 6 GHz EX option supports both the Upper and Middle 3300 to 3850 MHz
11. UNIT CHAN INPut lt real gt UNIT CHAN INPut Set the Input Level of the given channel of the given unit The corresponding query returns the set input level in dBm SPI mm mcations 176 SR5500 USER MANUAL Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 32 to 5 dBm 10 0 01 The actual range will vary based on the state of other system parameters UNIT CHAN INTerferer BITRate lt real gt UNLIT CHAN INTerferer BITRate Set the Interferer Bit Rate of the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 0 1 to 100000 kbps 9 6 0 001 UNIT CHAN INTerferer CTON lt real gt UNLIT CHAN INTerferer CTON Set the C N ratio for the given channel of the given unit The corresponding query returns the set C N ratio in dB Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 30 to 32 dB O 0 1 The actual range will vary based on the state of other system parameters UNIT CHAN INTerferer CTONO lt real gt UNLT CHAN INTerferer CTONO Set the C No ratio for the given channel of the given unit The corresponding query returns the set C No ratio in dB Hz
12. 2 eh M dle b Selected Unit og SPIRENT Dynamic Environment Emulation All Units Emulation File Unit 1 Open Emulation File C Wivek 5500 GUIDEE State Files R2 3 R2 3_Dual_13 States_CH1 P1_Doppler Vel stb Eg ce Unit2 C Vivek 5500 GUIDEE State Files R2 3 R2 3_Dual_13 States_CH1 P1_Doppler Vel stb Bre Trigger Mode Playback Mode Free Run New Emulation File Triggered Play 5 Fate Disable DEE Control Status Enabled ss Playback Controls All Units Elapsed Time FO OM O10 tient Player Status Waiting for Trigger SF Il Unit 1 Channel 1 Unit 1 Channel 2 Carrier Freg MHz Ex crane RES em av or ce RES Adjust Cie Ea ee Ajust Cutis Channel Mode Dual RF Band Lower Technology None Unit Under Test Unknown Unit Fading Uncorrelated Unit AWGN Uncorrelated Enabled DEE Figure 2 103 Dynamic Environment Emulation DEE View Waiting for Trigger 2 8 3 8 DEE Status Information The following Information is provided from the DEE engine Current State This is the current state of the DEE engine Current Loop In Play Continuously mode this indicates how many times the states have been looped Total Time Indicates the total time that DEE has been playing Player Status Indicates the state of the Player Playing Stopped Paused DEE Animation A simple animation providing a visual cue that DEE is running The state of the animation has no effect on the actual PDP of the current state
13. 541 Industrial Way West Eatontown NJ 07 724 Phone 732 544 8700 Fax 732 544 8347 This manual applies to the SR5500 Version 3 12 and higher Page Part Number 71 003547 Version A3 Copyright 2008 Spirent Communications Inc Printed in the USA Technical Support is available 8 30 AM 5 30 PM EST Monday Friday Phone support is available through Spirent Customer Care at 1 732 544 8700 For assistance login to http support spirent com and submit a Service Request Email support is available at wireless support spirent com Information furnished by Spirent Communications is believed to be accurate and reliable However no responsibility is assumed by Spirent Communications for its use Specifications are subject to change without notice 4 pr SPIRENT inepires innovation communications te SPIRENT inspires innovation Communications Table of Contents 1 COCO ee seen 7 T OVVIO aa a ea tee te ea to oo ete 7 12 SRS5S500APPUCaUONS csscnsscensssacecscencedcaresscecteeqensecceasesensseescee sacsecaceatees 9 1 2 1 Applicable to All Design Phases wiss cescicsestvenisavsesssvansvsvevesarensviaces lt sesisaseveiars 9 1 2 2 Evaluating Radio Access Technologies 11 1 2 3 Evaluating Air Interface Performance ccsscccseccessccsscccesceescesscccescceess 11 Ted REV Product Feadl UGS re seen dessein 12 1 3 1 Wireless Channel Emulation Features ss 12 11 2 Fasea SC FOG ICS ane den en Ro E ai
14. 7 Launch the instrument control software SR5500 Testhit on the PC by clicking the TestKit icon a gt on the desktop After launching the SR5500 TestKit application complete the connection to the SR5500 by clicking the Connect icon shown in Figure 1 10 ri SR5500 TestKit untitled File View Configuration Execute Tools Help DH G amp 8 a Channel 1 Velocity km h 250 000 Path 1 Channel Editor Modulation Channel Player lat I Cawlaoinh Figure 1 10 SR5500 TestKit Software Menus 8 TestKit indicates the connected status by displaying Status Connected in the status bar at the bottom of the window as shown in Figure 1 11 EL aTrier related Status Connected Figure 1 11 Status Connected Indicator 1 6 Verification Procedure This procedure verifies the basic operation of the SR5500 It is not necessary to complete these steps to use the SR5500 A signal generator and spectrum analyzer capable of operating at 900 MHz is needed for this verification The SR5500 default settings are used for this procedure Use the following table and block diagram to connect the required equipment SPIRENT inspires innovation Communications 20 SR5500 USER MANUAL Connect From Connect To Cable Signal Generator Output SR5500 CHANNEL 1 RF IN N to N SR5500 CHANNEL 1 RF OUT Spectrum Analyzer Input NtoN SR5500 Signal CH1 CH1 Spectrum Generator RF
15. Communications The carrier bit power and noise power in dBm can be calculated based on the following formula Eb dBm bps C dBm 10 log10 Bit Rate bps where Eb Bit power in dBm bps C carrier power in dBm Bit Rate bit rate of the carrier and N dBm No 10 log10 Receiver Bandwidth where N noise power in the receiver bandwidth in dBm No noise power spectral density in dBm Hz Receiver Bandwidth carrier bandwidth in Hz In carrier to noise power spectral density C No mode the power of the band limited noise is set as a ratio of carrier power to noise power spectral density The noise power can be calculated based on the following formula N dBm No 10 log10 Receiver Bandwidth where N noise power in the receiver bandwidth in dBm No noise power spectral density in dBm Hz Receiver Bandwidth carrier bandwidth in Hz There is also a dependency between the total output power available and the C N ratio Since the SR5500 can produce a fixed amount of total power large negative C N ratios reduce the maximum settable output power The following plot shows the relationship between C N ratio and output power The plot assumes that the receiver bandwidth is set to 100 of the noise bandwidth Inspired Innovation CHAPTER THREE TECHNICAL REFERENCE 127 C N versus Maximum settable Output Power 25 T T T 1 30 aE 45 a wt P A0 454 a 50 fe Maximum S
16. S P RE NT inspired Innovation Communications CHAPTER TWO OPERATION REFERENCE 41 Pie Den Configuration Gate Jocks Helo Channel Mode Dust PIF Bend Lower Techeciogy COM Unit Under Test Mobile Unit Fading Uncorreiated Unt ANGIE Uncerelsted Sten Connected Figure 2 22 Power Delay Profile History Figure 2 22 displays the Player View in 2x2 MIMO mode This presentation is similar to the first but all four MIMO sub channels are shown simultaneously Ble View Configuration Execute Too Help m OF de 6 aed SPIRENT Frec tete MERE Rans Carei Chamel Mode 212 MIMO AF Band Lower Techeotogy UMTS Una Under Test UE Lit Fading Unecmelates Leit AWGN Uncerrefated Statue Conrected Figure 2 23 Power Delay 2x2 MIMO Mode Figure 2 24 displays the Player View in 4x4 MIMO mode This presentation is similar to the first but all sixteen MIMO sub channels are shown simultaneously SPIRENT inspires innovation Communications 42 SR5500 USER MANUAL E Fl Wer Csligersles ttie Tools Help ee i J SD RSR Se SIRET Dhiar Made dad MIM FF Gond Low Techedleg COMASIOO Ure Under Test Mode Une Fading Une Su Corse EN EET A z z y Unt 2 MIMO Channel Ea Premed Delty Profile dad MIMO Unit 1 2 Output t oE CELI ETS ETS Figure 2 24 Power Delay 4x4 MIMO Mode 2 6 File Operations SR5500 TestKit supports saving and recalling files to simplify configuration of the SR550
17. UNIT TCU AUXinput SINgle SPLit UNIT TCU AUXinput Set the state of the SR5078 Test Switch auxiliary input Parameter Range Selection RST Resolution 1 to 4 unit 1 1 lt string gt SINgle SPLit SINgle UNIT TCU MODe DIVERSity NONDIVERSity UNIT TCU MODe Set the Mode for the SR5078 Test Switch M ee S PI RENT ses novation cations 190 SR5500 USER MANUAL Parameter Range Selection RST Resolution 1 to 4 unit 1 1 lt string gt DIVERSity NONDIVERSity NONDIVERSity UNIT H TCU PRESent Query used to determine if the SR5078 Test Switch is connected to the SR5500 Parameter Range Selection RST Resolution 1 to 4 unit 1 1 lt bool gt Not Present O Present 1 6 3 Command Dependencies Many of the commands and queries listed above have ranges dependant upon other settings The SR5500 parameter dependency tree is shown below Setting commands at a higher level of the tree may change the values in lower levels of the tree When this occurs the RPI status screen indicates that the parameters have changed but this does not generate an error viewable by the remote operator In order to guarantee that the settings match the desired values we recommend that you move down the parameter tree when changing settings For example you should set the Crest Factor before setting the output level
18. An example of the View Area is shown in Figure 2 7 M S PI RENT spires novation catons CHAPTER TWO OPERATION REFERENCE 31 Channel X Channel2 N Pte v Display Relative Path Loss 10 00 pee 20 00 BB bstarcaneous Path Loss 30 00 Relative Path Loss 4 g 10 00 50 00 40 00 70 00 0 00 2 4 6 8 10 12 4 16 18 20 22 TG Detay us Figure 2 7 TestKit Sample View Area 2 2 2 5 View Controls The View Controls change the contents of the View Area Different views provide access to different functionality The View buttons work the same as selecting the item from the View menu A sample View Control area is shown in Figure 2 8 Ghannel Editor Channel Player Interference Instrument Setup Summary Figure 2 8 Testkit Sample View Controls 2 2 2 6 Player Controls and Indicators The Player Controls and Indicators allow control over the powerful fading playback engine For a given set of profile conditions the engine will always generate the same fading sequence A sample Player Control Bar is shown in Figure 2 9 Pinyback Corals Elsesed Tire Figure 2 9 TestKit Sample Player Control Bar You can control the fading emulation playback status with the Player Controls similar to the way you use the controls on a CD player Observe the current point in the fading sequence via the Elapsed Time indicator SPIRENT taspices
19. CH 1 and CH 2 IF OUT BNC Type Connector 50 Q Reserved for future use CH 1 and CH2 Q OUT BNC Type Connector 50 Q Reserved for future use DBB IN1 IN2 and IN3 26 Pin MDR Type Connector DBB INT Used to transfer data from one 4x4 MIMO unit to another DBB IN2 IN3 Reserved for future use 9 Yo DBB OUT 26 Pin MDR Type Connector Used to transfer data from one 4x4 MIMO unit to another SYNC IN 15 Pin MDR Type Connector Used to synchronize fading data between multiple SR5500 systems SYNC OUT 15 Pin MDR Type Connector Used to synchronize fading data between multiple SR5500 systems inspired Innovation CHAPTER ONE INTRODUCTION 17 Rear Panel Controls CH 1 and CH 2 TRIG IN BNC Type Connector 50 Q CH1 TRIG IN Used to trigger DEE CH2 TRIG IN Reserved for future use CH 1 and CH 2 SYNC OUT BNC Type Connector 50 Q Reserved for future use GPIB Reserved for future use ETHERNET RJ 45 Type Connector The Ethernet port supports TCP IP It is recommended that a Category 5 Ethernet cable be used SERIAL RJ 45 Type Connector Control port used exclusively for configuring Ethernet communication parameters AUX 1 RJ 45 Type Connector This port is used to control the SR5500 6 GHz EX RF Converter AUX 2 RJ 45 Type Connector Reserved for future use AC Power Receptacle The AC universal power receptacle is l
20. Connect the Measurement Device to the RF2 Output of the SR5500_ Measured Value 0 0 Enter the measured value inthe Textbox and click Next gt to proceed to the next step Mode Manual Cancel Figure 2 55 Phase Calibration Wizard Step Three Manual Mode Phase Calibration Wizard Congratulations You have succesfully completed the calibration The Phase of the system is now calibrated for this cable set Click Close to exit the Wizard Figure 2 56 Phase Calibration Wizard Confirmation 2x2 MIMO Mode SPIRENT inspired innovation Communications CHAPTER TWO OPERATION REFERENCE 59 Unit 1 2 Phase Calibration Wizard Overview This wizard will take you through the process of calibrating the phase of the SR5500 unit Mode Automatic Manual Ensure that the phase of all equipment is locked through a common 10 MHz reference Instructions 1 Connect the RF1 Output of the SR5500 to the RF1 Input Click Next gt to proceed to the next step the measurement will made automatically Mode Automatic Figure 2 58 Unit 1 2 Phase Calibration Wizard Automatic Mode SPIRENT inspired innovation Communications 60 SR5500 USER MANUAL Unit 1 2 Phase Calibration Wizard Step 1 of 7 Instructions 1 Connect the Signal Source to the RF1 Input of the SR5500 2 Connect the Measurement Device to the RF1 Output of the SR5500 Measured Value Enter the me
21. Doppler frequency Both plots show the measured performance of the SR5500 well exceeds the above standards for Rayleigh fading 1 00 0 10 P r lt x 30 00 20 00 0 00 10 00 10 00 SIGNAL POWER REALATIVE TO MEAN Figure 3 10 Measured vs Theoretical CPDF Measured e Theoretical Saae SPIRENT mi MM LACE ors 116 SR5500 USER MANUAL LEVEL CROSSING RATE crossing sec 1 00 30 00 25 00 20 00 15 00 10 00 5 00 0 00 LEVEL RELATIVE TO MEAN dB Figure 3 11 Measured vs Theoretical LCR Measured Theoretical 3 6 2 Rician Fading Amplitude Distribution Rician fading is formed by the sum of a Rayleigh distributed signal and a Line Of Site LOS or direct path signal where the LOS signal is typically subjected to a static frequency shift static Doppler A fading environment typically associated with Rician fading is that where one strong direct path reaches the receiver at roughly the same delay as multi path from local scatterers The SR5500 supports the general case of Rician fading with programmable Angle of Arrival AOA and K factor In the general case of Rician fading the arrival angle of the LOS path at the receiver is programmable as is the ratio of powe
22. Paths Fading Channel 12 Crest Factor Channel 1 15 0 dB Channel 2 15 0 dB M Ethernet Setting Enter the IP Address of the remote unit 10 16 160 126 Query Change the IP address of the remote unit IP Configuration Figure 2 111 System Configuration Window Controlling Multiple Units system Configuration Number of SR5500 units in the system Number of SR5500 instruments controlled by TestKit 4 Synchronizaton Synchronize Play Pause Stop across units Active Play Pause Stop f All units at once Selected unit Correlation Nl i System based Correlation Coefficient type Envelope Lower Band 400MHz 2 00MHz IP Address of this PC Select the IP Address of this PC from the list of found IP Addresses for this PC 10 16 2 78 is Unit 1 Unit 2 Unit3 Unit 4 Channel Configuration 4x4 MIMO Total Number of Paths 384 RF2 15 0 dE Enter the IP Address of the remote unit 127 0 0 1 Query Change the IP address of the remote unit IF Configuration Figure 2 112 System Configuration Window Setting 4x4 MIMO SPIRENT inspired innovation Communications CHAPTER TWO OPERATION REFERENCE 101 The Channel Configuration Crest Factor and IP address can be set independently for each unit Each unit must have a unique IP address The player Synchronization Mode can be set to Active or Inactive For DEE and correlation to function in a mu
23. SPIRENT cations nspireg Innovation 166 SR5500 USER MANUAL Index Parameter Index Parameter Index Parameter R139 U4h11_U1h22_Imag R175 U4h21_U3h21_Imag R211 U4h22_U1h11_Imag R140 U4h11_U2h11_Real R176 U4h21_U3h12_ Real R212 U4h22_U1h21_Real R141 R143 U4h11_U2h11_Imag U4h11_U2h21_Imag R177 R179 U4h21_U3h12_Imag U4h21_U3h22_Imag R213 R215 U4h22_U1h21_Imag R142 U4hi1_U2h21_Real R178 U4h21_U3h22_ Real R214 U4h22_U1h12_Real U4h22_U1h12_Imag R144 U4h11_U2h12_Real R180 U4h21_U4h1T Real R216 U4h22_U1h22_Real R145 U4h11_U2h12_Imag R181 U4h21_U4h11_Imag R217 U4h22_ U1h22_ Imag R146 U4hi1_U2h22 Real R182 U4h12_U1h11 Real R218 U4h22_U2h11_Real R147 R149 U4h11_U2h22_Imag U4h11_U3h11_Real U4h11_U3h11_Imag R183 R185 U4h12_U1h11_Imag U4h12_U1h271_ Real U4h12_U1h21_Imag R219 R221 U4h22_U2h11_Imag U4h22_U2h21 Real U4h22_U2h21_Imag R150 U4hi1_U3h21_Real R186 U4h12_U1h12_Real R222 U4h22_ U2h12_Real R151 U4ni1_U3h21_Imag R187 U4h12_U1h12_Imag R223 U4h22_U2h12_Imag R152 U4h11_U3h12_Real R188 U4h12_U1h22_ Real R224 U4h22_U2h22_Real R153 R155 U4h11_U3h12_Imag U4h11_U3h22_Real U4h11_U3h22_Imag R189 R191 U4h12_U1h22_Imag U4h12_U2h11_ Real U4h12_U2h11_Imag R225 R227 U4h22_U2h22_ Imag U4h22_ U3h11_Real U
24. Setting up the Remote Programming Interface 140 Baa SASTOP HO Ly cl fc ene de el a iii ua 142 5 3 3 Local Remote Mode sesiccicewosscusswnesrdcnce res oeeme see taba etes sen oste ati lescessossenet 142 5 9 4 Enable Monitor Messages veiciescssaacacscandunendwactienceavesetaciavevsescaestesecssswnsecees 142 Beh EMQDIC ICP AP ECO eera E EE 142 5 3 6 Automatically Configuring SR5500 TestKit for Remote Control 142 5 4 SR5500 TestKit Command Protocol ss 143 Gite COMMON VDO Se a bee annee E AE E EEE AA 143 D 2 22 Commana SEGUCNCE a ca de ces en n ane e aa ed ea inde 143 AS TOONS S AGOS ari EE E E 144 44s RESPONSE FOMA ieies na des eee AEN ao ENR 145 5 4 5 Long Form and Short Form of Mnemonics ss 145 5 4 0 Hierarchical Default FOTMGL scasievecesscasaveesddenenavecsarnascedecsaenssiecacnentsesvevsss 146 5 7 COL MOSS AO COMORES eee neo an en ES ee ee 146 5 5 Transmission Layer Protocols ss 147 DD LAN CN EP PIO OCO aa a an E een tee cie 147 pra OB POLO O eon ae ae a eee ane ee so co a 147 6 RPI Command Referene cccscccsscccssccssccsscccssccsscccssccsscoesscees 153 6 1 Conventions to Specify Commands 153 6 2 Command DeSCrIPLIONS 55n5 een sssnentenssenons caresses sense 159 6 3 Command DEPpendenCles ccesccsscesccsccssceccsccssceecesscesceeceescesces 190 Ci LUE LOS LOS RE E E E E P 191 6 9 Overload SUIS cccscenrecancestemonsentescecanseecbeuneersevcoeupesn
25. _ Cami _ _i _ Power dBm Measured Set Measured Freq MHz BE Input ss Band GE a0 AV FOA Channel WATER Channel NAS Out AF Lower UMTS Hiru Under Test UE Urat Facing Uncorrelated Let AWGN Uncorrelated Status Mot Connected Figure 2 1 TestKit Main Window The table below indicates the different parts of the TestKit Graphical User Interface GUI Title Bar Player Controls and Indicators kc CE Channel 2 1 0 Controls and Indicators com View Controls Channel 1 1 0 Controls and Indicators Ea Unit Selection a Status Bar View Area Menu Bar 2 2 1 Connecting to the SR5500 SR5500 TestKit can operate in Local Mode or Remote Mode In Local Mode TestKit does not communicate with the SR5500 It emulates the control of the SR5500 but does not send any commands and the actual configuration of the SR5500 is not known In Remote Mode SR5500 TestKit sends commands to the SR5500 and receives status information back The presentation in Remote Mode is an accurate representation of the configuration of the SR5500 TestKit starts in Local Mode and must be manually set up to act in Remote Mode There are two indicators of the Mode Testhit is in The status bar on the bottom of the window indicates Not Connected or Connected respectively The Status Indicators are shown in Figure 2 2 i SPIRENT inspires innovation Communications CHAPTER TWO OPERATION REFERENCE 29 C N
26. a E E Figure 2 93 TestKit DEE Parameters All parameters set up statically in the GUI remain static unless the particular parameter is changed in DEE Only certain parameters are capable of being changed in DEE Parameters not controllable in DEE and enabled in the Static Field such as Modulation remain enabled during a DEE simulation The state of the Modulation parameter can not be changed dynamically and retains its static state SPECIAL CASE Delay Mode If the Delay mode for a particular path is set to Birth Death or Sliding Delay the Delay for that path can not be changed in DEE Sliding Delay and Birth Death operates as set in Static mode while DEE is running Frequency Shift Mode If the Frequency Shift mode for a particular path is set to High Speed Train the Frequency Shift for that path can not be changed in DEE High Speed Train operates as set in Static mode while DEE is running After defining the Static State of the SR5500 1 Define the State Changes in the Emulation file Refer to page 82 for details Set up the desired Dynamic Changes using the file dee_template xls This is an Microsoft Excel file used to create the DEE Emulation File The DEE view provides a shortcut for opening this file NOTE This file needs only to define changes from the static state of the unit If information in the template is left blank it is assumed that no change is desired _ a SPI
27. dB Adjust Carrier RS ncorrelated Status Not Connected Adjust Carrier ncorrelated Status Connected C N dB Connection Status Indicator Figure 2 2 Connection Status Indicators The icon on the tool bar changes appropriately to indicate the current status In the Execute menu the first item in the menu displays Disconnect from SR5500 while in Remote Mode untitled ation Execute a Tools Help Modulation Figure 2 3 Execute Menu Connect to SR5500 To enter Remote Mode click the Connect to SR5500 icon oF or select Execute gt Connect to SR5500 as shown in Figure 2 3 While establishing connection to the SR5500 TestKit attempts to communicate with the SR5500 If successful it communicates with the SR5500 to synchronize the PC software and the SR5500 unit If it is unsuccessful you receive an error message indicating the problem 2 2 2 Basic Operation 2 2 2 1 Title Bar The Title Bar shown in Figure 2 4 displays at the top of the window It contains the program name and the name of the current settings file After starting SR5500 Testhit the current settings file is Untitled The buttons at the right side of the Title Bar allow you to minimize resize or close the TestKit Application The title bar also indicates the current view For more details on the different views refer to Section 2 2 2 4 on page 30 A SAS 50M Testkit untitled Figure 2 4 Te
28. etc 2 6 2 Recent File List SR5500 TestKit maintains a list of the four most recently used files These display at the end of the File menu To recall a file that appears on this list select it from the File menu 2 7 Operational Detail This section details the parameters that control the Channel Input and Output and the Path Fading parameters 2 7 1 Channel O Parameters Properly setting the Channel Input and Output parameters ensure the target signal is not compromised in terms of fidelity and power and produces the highest level of performance from the SR5500 This section details the Channel I O Parameters 2 7 1 1 Selecting Instrument Configuration The SR5500 can be configured for a Single Channel Mode Dual Channel Mode RX Diversity Mode TX Diversity Mode 2x2 MIMO Mode or 4x4 MIMO Mode MIMO Modes 2x2 and 4x4 require the purchase of both a hardware and software option Refer to Section 2 3 on page 34 for a description of the different channel modes Set the number of Channels and Paths in the System Communication Setup window To access this window select Configuration gt System Communication Setup or click the System Communication Setup icon from the toolbar SPIRENT mi PMU Mca Corns 44 SR5500 USER MANUAL pa SPIRENT Communications System Configuration Number of SR5500 units in the system Number of SR5500 instruments controlled by TestKit 1 X Synchronization Mode Synchronize Pla
29. line option when the application is opened C Program Files Spirent Communications SR5500 TestKit SR5500 exe RPI This can be done by either calling the application from a DOS prompt adding this command to a batch file or by creating a shortcut to SR5500 exe that includes the RPI command line option f SPIRENT mi mmumcations CHAPTER FIVE REMOTE PROGRAMMING INTERFACE OPERATION 143 5 4 SR5500 TestKit Command Protocol 5 4 1 Command Types IEEE 488 2 supports two different program Message Unit types queries and commands Queries request a response from the unit being queried Commands instruct the unit to carry out an action such as set a parameter or execute a function GPIB common commands are defined by the IEEE 488 2 specification so that every unit that supports IEEE 488 2 responds to the command in the same way Examples of such commands are IDN which is query requesting model and revision information and OPT which is a query requesting system options from the unit Other commands are defined specifically for SR5500 TestKit and loosely follow the SCPI convention Related commands and queries are grouped together under headers allowing them to be organized and thus easier to understand 5 4 2 Command Sequence To execute a SR5500 TestKit Program Message Unit a controller must execute a simple three step sequence 1 Check for any pending responses SR5500 TestKit does not execute a new Pr
30. stopping causes all units pause or stop This functionality allows you to set Rayleigh fading correlation between channels in different systems If the Synchronization Mode is set to Inactive changes to parameters in one unit do not impact other units 2 13 7 Correlation Coefficient Type The Correlation Coefficient Type can be set to Envelope Component or Complex Complex can be set only if the Complex Correlation Option is present in every SR5500 in the Multi unit System Complex Correlation is the only option available in MIMO mode 2x2 and 4x4 When the Correlation Coefficient Type is set to Envelope the correlation is between the magnitude of the Rayleigh fading variables EJI X ILY I ET X HELY EnvelopeCorrelatim X Y EUR nn ELX EI X D ELY F EUY D Where X and Y are the complex fading variables applied to each path Efn is the expected value of n When the Correlation Coefficient Type is Component the correlation is set for the In phase I Real components of each of the Rayleigh fading variables Additionally the same correlation is applied to the Quadrature Q Imaginary components of each the Rayleigh faded variables ELROORMY I ELROOIELRMY VER EIRX D EIRY 1 ER E SQOSCY EIS IISCY VESSIE ELS YY ESY Component Correlation R X R Y Component Correlation 3 X 3 Y Where X and Y are the complex fading variables applied to each path E n is the expected
31. 1 ACCESSING the OST ASSIStaNi nan ont tan ee ten ni inc 38 2 4 2 Changing the Carrier Frequency ss 38 2 4 3 Automatically Selecting a Channel Profile csscccsscccssscesscccesccessceeeces 39 2 4 Completing INC CONSIGUIQUON serrr rror nse TENERE 39 25 CRANN LPIA VO aer EEE A A AEA EAS 40 20 FEOEO aor a E E EE ENE EEO E AS 42 2 6 1 Settings Saved in the Settings File ss 42 220 2 R O FING LIS o Ea 43 2 7 OOETAMOMAl DEAN ses die 43 271 Channel 1 O PORGIO LORS a eee 43 27 2 Path POIOOIOl Se een ee tie 61 DAS WICH CCI O E EE 68 270 MSOME OS PEU D VIGNES none Danses tn na OE tetes te 72 PT D DUI GV Vi OW r E E stand sestessdoanets 76 270 585070 SWIC CONT Ol sec de ea ee ee at EEE 78 2 8 Dynamic Environment Emulation ss 79 QT IVC TIO on 79 2 8 2 Emulation File Creation DEE Template 81 2 8 3 Dynamic Environment Emulation DEE View 85 2 8 4 Using DEE with Multiple SR55005 90 2 9 Using the SR5500 with 6 GHZ 6GHZ EX Option cseccesscceesceeees 90 2 9 1 Configuring TestKit for the 6 GHZ EX Option 90 2 9 2 Selecting Lower Middle Upper Band ss 90 2 9 3 Parameter DEDENGENCICS ccesccssesnececticwsinsicewssesstdivinessacesieasdcusataiabsestetiones 91 2 10 Downloading Firmware to the SR5500 ss 92 240 4 Starting TNE DOWIMOGG siescccinavscoasncnseauizeusiiwnesveuasttesantiasnssesictaecesstnansseueas 92 2 402 DUNG THC DOWN OOA ne ane net des ee ea a ten ec us 93 2103 RECOVELY In CO
32. 2 105 Firmware Upgrade Window Confirm the correct Firmware version to download If connected to multiple units select the unit to upgrade You should also verify that the IP address displayed matches the port connected to the SR5500 Click the Upgrade Now button to start the Firmware download f p SPIRENT nm nmumcatiarns CHAPTER TWO OPERATION REFERENCE 93 2 11 2 10 2 During the Download During the Firmware download process SR5500 TestKit instructs the SR5500 to retrieve certain files from the Controller PC via TCP over the Ethernet interface Each file is a part of the Firmware in the SR5500 and is thoroughly checked to ensure proper transfer to the SR5500 The SR5500 resets when the file transfers are complete and TestKit reconnects to the unit 2 10 3 Recovery in Case of Failure Depending on the failure condition it may be possible to recover by reattempting the firmware download procedure If the reattempt fails or is not possible it is likely the unit requires service Contact Spirent Communications customer care for more assistance Changing the Remote Connection The connection between the controller PC and the SR5500 is a standard Ethernet connection SR5500 TestKit and the SR5500 use standard TCP IP to communicate over the Ethernet connection Both the SR5500 and the controller PC are configured for proper communication It is unlikely you will need to make any adjustment to this
33. 2 9 1 Configuring TestKit for the 6 GHz EX Option The SR5500 controls the SR5500 6 GHz EX RF Converter It automatically detects the presence of the Converter when properly connected This information is sent to TestKit when it connects to the SR5500 TestKit automatically makes the appropriate adjustments after detecting the 6 GHz EX RF Converter 2 9 2 Selecting Lower Middle Upper Band To access the additional frequency band available by the SR5500 6 GHz EX RF Converter select Lower Middle or Upper Band by selecting Configuration gt System or by clicking the System Communication Setup icon from the toolbar to open the System Communication Setup window A sample System Communication Setup window is shown in Figure 2 104 nspired Innovation CHAPTER TWO OPERATION REFERENCE 91 System Configuration Number of SR5500 units in the system Number of SR5500 instruments controlled by TestKit 1 X Synchronizartion Mode Syncronize Play Pause Stop across units Play Pause Stop ce Correlation Coefficient Correlation Coefficient type Cc Frequency Mode of the system RF Frequency Mode Lower Band 400MHz 2700MHz Lower Band 400MHz 2700MHz Middle Band 3300MHz 3900MHz se sie sper Band 4 100MM SO00MHs per Band 4100MHz 6000MHz Select the IP Address of this PC from the list of found 101615 IP Addresses for this PC d ni Unit 1 Unit2 Unit3 Unit4 Channel Configuration Dual Pat
34. 500 Mhz E Bandwidth 6500000 Bandwidth 6500000 CTolRatio 0 CTolRatio 0 Mode OFF Mode OFF Figure 4 5 AWGN Settings Window 4 5 2 4 Driver Trace Log The Trace Log provides a printout of the history of commands sent to the API This helps you debug the application You can save this Log to a file for future review Driver Trace Log Clear ave SS s Driver Trace Log ses Date 6672004 meee AP Version 1 30 3926 0 FF gt 1 7 55 27 PM gt Setting ModType property of CAOPU to Rayleigh 2 1 55 28 PM gt Set ModTupe database entry for CHOPO to Rayleigh 3 1 55 34 PM gt Setting FadingDoppYelocity property of CAOPO to 25 4 1 55 34 PM gt Set FadingDoppYelocity database entry for ChOPO ta 25 6 7 55 35 PM gt Setting FadingDoppFrequency property of ChOPO to 48 9366324663622 6 1 55 35 PM gt Set FadingDoppFrequency database entry for ChOPO to 48 9 7 1 55 35 PM gt Setting FadingLOSFS property of CHOPO to we TARA A OA OI 1 Figure 4 6 Driver Trace Log Window 4 5 2 5 Coupled Parameter Log The Coupled Parameter log tracks changes in one property that affect another For example if you change the RF center frequency of the channel the fading Doppler changes to account for this new frequency If you change the receiver bandwidth of the AWGN source it could cause the set C N ratio to become unachievable In this case the API changes the set C N ratio to the closest achievable v
35. Autoset is successful TestKit automatically updates the Set Input level textbox If the Autoset is unsuccessful TestKit reports the problem If the input signal is bursty set the Power Meter in Triggered Mode to measure the input signal correctly Refer to Section 3 10 on page 128 for more details on Triggered Mode NOTE As the input signal level changes over time the output level changes by an equal amount It may be necessary to repeat the Autoset because the SR5500 does not automatically repeat the function Make sure your measured input power equals set input power 2 7 1 6 Manually Setting the Input Power The Input Ranging Circuit can be configured manually To perform this operation enter the RMS power present at the SR5500 input in the Set Input textbox in TestKit 4 a SPIRENT series mento LOT aCe CS 48 SR5500 USER MANUAL Channel 1 Power dBm Set Input Input ES nos AW Output Output Bam so AW Q Overload Overload Q Overload Q Overload Figure 2 35 Input Power Controls 4x4MIMO Mode You can also change the Input Level by clicking the Up and Down arrows to adjust the value in the textbox The value of the Set Input increases or decreases by 1 dB increments Holding down the Up or Down arrows causes the value in the textbox to change more rapidly Examples of input signals that may require manual input level control include e A carrier signal with a variable input leve
36. CHA Frequency Mhz 2112600 Frequency Mhz Figure 4 2 API Front Panel Execute Menu _ SPIRENT sm mmumcations 136 SR5500 USER MANUAL 4 5 2 2 Channel Parameter Browser The Channel Parameter Browser displays the various channel path related properties You can edit and view many of the properties in this window This should be done with caution Channel Parameter Browser SA5500 A FadingFregShitt 0 Channell 1 FadngLOS 0 50 FadingN akagamiM M1 Fath FadingPhaseS hift 0 Pathe FadingRiciank 0 Paths FadingSpectumshape Classic dE Path4 E IsEnabled True PathE lsLN Enabled False Path LMA ate g Path LN StdDey Oo Pathe ModT ype Hone Path Path 0 t ai gt FelPathLoss D Figure 4 3 Channel Parameter Browser Window 4 5 2 3 View Menu The View menu gives access to other system level property values such as AWGN parameters and communication settings SR5500 API Front Panel Execute Help Viel Set Input Level dE Meacrend lrini t 10 0 o CHANNEL Q CHA Frequency Mhz 112600 O Frequency Mhz Set Input Level dE Meacrend lrini t Figure 4 4 API Window View Menu p SPIRENT sions Communications CHAPTER FOUR INSTRUMENT API 137 Additive Interferer AWGN Settings Channel 0 Channel 1 Interferer Status OFF Interferer Status OFF Ratio 0 00 dE Ratio 0 00 dB AWGN Bandwidth 6 500 Mhz AWGN Bandwidth 6
37. CHAN INTerferer RBWidth Set the Receiver Bandwidth for the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 0 1 to 26 MHz 3 84 0 001 SPIRENT m me mm mcations 178 SR5500 USER MANUAL UNIT CHAN MEASure CTON Query the measured C N ratio in dB for the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 UNIT CHAN MEASure CTONO Query the measured C No ratio in dB Hz for the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 UNIT CHAN MEASure EBNO Query the measured Eb No ratio in dB for the given channel of the given unit Parameter Range Selection RST Resolution EST ES E 1 to 2 channel UNIT H CHAN MEASure DCYCle lt real gt UNIT CHAN MEASure DCYCle Set the Duty Cycle of the power meter for the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 1 to 100 100 0 1 UNIT CHAN MEASure IAVGexp lt real gt UNIT CHAN MEASure IAVGexp Set the number of input averages for the given channel s power meter of th
38. Finger Tracking e Diversity Reception e Channel Equalization e Power Control Schemes e Handover Efficiency e Radio Link Protocols RLPs e Geolocation e Multiple Input Multiple Output MIMO Systems SPIRENT mi munications 12 SR5500 USER MANUAL 1 3 Key Product Features 1 3 1 Wireless Channel Emulation Features With a powerful all digital signal processing engine the SR5500 emulates wideband channel conditions with unprecedented accuracy and programmability RF Channel Emulation features include e Comprehensive channel models with up to 24 independent paths enables evaluation of 3G and Wireless LAN equipment well beyond minimum performance standards e Real time fading sequence generation enables channel model modifications without the lengthy delays required to pre calculate fading coefficients e Superior channel fidelity required to properly evaluate higher order modulation schemes minimizing unwanted distortion that leads to false test results e Digital AWGN gives accurate and repeatable C N C No and Eb No ratios e Creation of real world fading scenarios with DEE Dynamic Environment Emulation enables time vary fading parameters e Long fading sequence repetition rate ensures realistic test conditions results e Time varying channel models include dynamic Power Delay Profiles that evaluate adaptive modulation and coding schemes e Real time display of channel conditions and
39. Frequency Shift Doppler Velocity MIMO Sub Channel State MIMO Sub Channel Relative Power and MIMO Sub Channel Phase Minimum State Time 10 ms f SPI R E N L nspired Innovation MT mmumcations CHAPTER SEVEN TECHNICAL SPECIFICATIONS 205 Minimum Number of States Maximum Number of States Maximum State Transition Time RF Output Level Changes All Other Changes 7 5 11 1 DEE Trigger Characteristics Trigger Signal Trigger Signal Power Minimum Trigger Width Trigger Delay from Trigger to Change in Output Level Change in other parameters 7 5 12 Multi Antenna Modes Settable Parameters Relative Channel Power Range Relative Channel Power Accuracy Phase Range Phase Resolution 65535 2 ms Measured from start of state change to completion of state change 400 us Measured from start of state change to completion of state change TTL Rising Edge 3 3 V 90 ns lt 5 0 ms lt 1 0 ms Receive Diversity Transmit Diversity Multiple Input Multiple Output MIMO 2x2 and 4x4 Relative Channel Power TX Diversity MIMO Selectively Enable Sub channels MIMO Phase MIMO 30 dB 0 1 dB Relative power difference lt 10 dB 0 3 dB Relative power difference lt 20 dB 1 0 dB Relative power difference lt 30 dB Valid when both signals are of the same type and at the same frequency If signals are at different frequencies accuracy is affected by channel flatness
40. In RF Out Analyzer Figure 1 12 SR5500 Verification Setup Diagram OPTIONAL Use the table and block diagram shown in Figure 1 13 to connect the equipment to a SR5500 equipped with the 6 GHz EX RF Converter Connector 1 From Connector 2 To Cable Signal Generator Output SR5500 6 GHz EX RF Converter N Type CH 1 RF IN SR5500 6 GHZ EX RF Converter CH Spectrum Analyzer Input N Type 1 RF OUT CH1 Out 6GHz Option Spectrum Analyzer Signal Generator Figure 1 13 SR5500 with 6GHz EX Option Verification Setup To run the Verification Procedure 1 Follow the procedure to connect the instrument with TestKit outlined in Section 1 5 on page 18 2 Select File gt Open Settings File as shown in Figure 1 14 8 SR5500 TestKit C Program Files Spirent Communications SR5500 Te File View Configuration Execute Tools Help O New Settings File Settings File GA Save Settings File Save Settings As C Program Files Spirent Communications SR5500 TestKit Default wce ig Figure 1 14 SR5500 Testkit Open Settings File 3 Open the c Program Files Spirent Communications SR5500 Testkit Default wce settings file 4 Set the signal generator to 900 MHz with an output power of 10 dBm it SPIRENT nm mmumcations CHAPTER ONE INTRODUCTION 21 5 Set the spectrum analyzer to 900 MHz with a span of 30 MHz 6 The output signal should
41. Measured In the Triggered mode only the Calculated mode is available When the output power measurement type is set to Calculated the output power is determined based on the measured input level The channel is assumed to have a constant fixed loss This is true in most cases If a model is setup with paths that are 180 degrees out of phase this assumption may be incorrect When the output measurement type is set to Measured the output is measured after fading The Power Meter Configuration window allows you to select the number of averages that determine a power measurement In Continuous mode the Power Meter measures over the configured time period and reports the average measurement In Triggered mode the Power Meter records instantaneous RMS power measurements when the Trigger threshold is satisfied The data is recorded and averaged when the total averaging time is reached Refer to the Technical Reference chapter on page 107 for details on the relationship between Trigger Level Averaging Time and the function of the triggered Power Meter 2 7 1 9 Setting the Output Power To set the nominal RMS output power level enter the desired level in the Set Output textbox in SR5500 TestKit If the Set Input level accurately shows the actual input signal level the nominal RMS output level reflects the value in the Set Output textbox cnannel I Power dBm Measured Set Input input 106 AV Output 50 AW Figure 2
42. Output textboxes The input power measurement enables you to quickly determine the accuracy of the Set Input value The output power measurement represents the average output power of the SR5500 If an interferer is enabled TestKit displays the measured C N ratio This measurement is based on the current measured output power and the set C N ratio You can set the output power measurement to one of two modes Calculated or Measured In Calculated mode the output power displays based on the measured input level and the known loss of the channel In this mode the output measurement does not respond to instantaneous changes in output power level caused by fast or slow fading This mode is useful when the Doppler is very low When set to Measured mode the output power is measured and displayed after fading is performed The output power in this mode varies instantaneously with fading The Measured mode is not available when the Power Meter is set to Triggered mode SPI REI J T nspired innovation mmi PMU Mca Corns 52 SR5500 USER MANUAL 2 7 1 11 Adjusting the Output Power Cable Loss Correction Factors The SR5500 has the ability to set an offset to compensate for cable loss for both the Set and Measured Power indicators To perform this operation click the Cable Loss button in SR5500 TestKit Channel 1 Set Overload Input vs AV oz Output so AY om CY Cette Los Figure 2 42 Cable Loss Button Dua
43. Parameters window 2 7 2 8 Fixed Frequency Shift To set a path for a Fixed Frequency Shift set the Frequency Shift mode to Fixed by selecting it from the Frequency Shift Mode column To set a value for the Fixed Frequency Shift in Hz independently for each path use the Frequency Shift column as shown in Figure 2 25 SPIRENT mm mmumcations CHAPTER TWO OPERATION REFERENCE 65 Channel 1 Channel 2 Velocity km h 50 000 Fading Doppler Fading Doppler Phase Shift Frequency Shit Modulation Hz Vel Mode Frequency Shift Hz Ae istic 0 0 Fixed 0 00 Figure 2 65 Frequency Shift in Fixed Mode 2 7 2 9 High Speed Train Frequency Shift The SR5500 allows any number of paths to have High Speed Train Frequency Shift Set the Frequency Shift Mode to High Speed Train set the related parameters using the grid directly as shown in Figure 2 66 or the High Speed Train Parameters Frequency Shift window shown in Figure 2 68 To display the High Speed Train Frequency Shift Parameters window click the Frequency Shift cell to display the More button as shown in Figure 2 67 The High Speed Train Frequency Shift Parameters window plots the Frequency Shift and displays key characteristics such as maximum and minimum values and period of the Frequency Shift Refer to Section 3 7 2 on page 119 for details on the High Speed Train Frequency Shift Unit 1 Channel 1 Unit 1 Channel 2 Velocity km h 50 000 jo Freque
44. R73 U3h21_U1h11_Imag U3h12_U2h11_Imag U3h12_U2h21_ Real R101 R125 U3h12_U2h21_Imag U3h22_U2h22_Imag U3h22_U3h11_ Real R127 U3h22_U3h11_Imag U3h21 U1h21 Real R102 U3h12 U2h12 Real R128 U3h22 U3h21 Real Ets U3h21_U1h21 Imag R103 U3h12_U2h12 Imag R129 U3h22 U3h21_Imag LCR U3h21 U1h12 Real R104 U3h12 U2h22 Real R130 U3h22 U3h12 Real R80 U3h21_U1h12_Imag U3h21_U2h11_Real R81 R105 U3h21_U2h11_Imag U3h12_U2h22_Imag U3h12_U3h11_Real R107 R131 U3h12_U3h11_Imag U3h22_U3h12_Imag U3h21 U2h21 Real R108 U3h12 U3h21 Real SR ee U3h21_U2h21 Imag R109 U3h12_U3h21 Imag of U3h21_U2h12 Real R110 U3h22 U1h11 Real Sf R85 U3h21_U2h12_Imag R111 U3h22_U1h11_Imag 4 UNITS 2x2 MIMO Complex Correlation RO R131 as above Index Parameter Index Parameter Index Parameter R132 U4h11_U1h11_Real R168 U4h21_U2h12_ Real R204 U4h12_U3h22_Real R133 U4ni1_U1h11_Imag R169 U4h21_U2h12_Imag R205 U4h12_U3h22_Imag R134 U4h11_U1h21_Real R170 U4h21_U2h22 Real R206 U4h12_U4h11_Real R135 U4h11_U1h21_Imag U4h11_U1h12_Real R137 R171 U4h11_U1h12_Imag U4h21_U2h22_ Imag U4h21_U3h11_Real R173 R207 U4h21_U3h11_Imag U4h12_U4h11_Imag U4h12_ U4h21_Real R209 U4h12_U4h21_Imag R138 U4h11_U1h22_Real R174 U4hn21_U3h21_Real R210 U4h22_U1h11_Real M ee
45. RST Resolution lt string gt FREErun TRIGgered FREErun ERR Query the error queue Refer to Section 5 4 7 on page 146 for possible responses LOAD lt string gt Load a Wireless Channel Emulator wce settings file Parameter Range Selection RST Resolution lt string gt full valid path filename wce ae NUMUnits Query the number of SR5500 units in the suite SAVE lt string gt Save a Wireless Channel Emulator wce settings file Parameter Range Selection RST Resolution lt string gt full valid path filename wce a SYNChronize Query the synchronization state of the system Off 0 system is unsynchronized On 1 system is synchronized f Saee Communications CHAPTER SIX COMMAND REFERENCE 173 UNIT ASTatus Query the Autoset status for the given unit Parameter Range Selection RST Resolution C CE 1 to 2 channel GSS responses Failed Failed to Autoset Aborted Autoset Aborted Complete Autoset completed successfully LIn Progress Autoset in progress Averaging Autoset in Progress Averaging Ranging Autoset in Progress Ranging WaitingForTrigger Autoset in Progress No triggers yet received UNIT CHAN AABort Abort the Autoset for the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 u
46. Refer to Section 2 7 1 6 on page 47 for details on setting the Input Power manually Access the automated level control functionality through the Autoset feature Refer to page 46 for details on the Autoset feature SR5500 measures and reports the input power level in SR5500 Testhit Refer to the Section on Measured Input and Output Power Indicators on page 51 for details NOTE If the SR5500 is equipped with the SR5500 6 GHz EX RF Converter all input and output power references are mapped to the input and output of the SR5500 6 GHz EX RF Converter 2 7 1 5 Using Autoset The Autoset feature measures the input signal power and configures the channel signal levels for optimal output performance The SR5500 performs the Autoset function once each time you click the Autoset button The SR5500 does not continually re range for changing input signal powers SPIRENT sprono nmumcatiarns ij CHAPTER TWO OPERATION REFERENCE 47 Power dBm Input 10 63 Output 60 AV Figure 2 30 Autoset Option Dual Channel Mode Dot O Ovenas Oder Q Overload Figure 2 32 Autoset Option 4x4 MIMO Mode To perform an Autoset 1 Apply the appropriate input signal to the SR5500 and click the Autoset button 2 The SR5500 measures the RMS input level and sets the correct input level circuitry The SR5500 also adjusts the output attenuation to achieve the set nominal RMS output level If the
47. Table Format Configuration Window This window allows you to select which columns display in the grid Click the Show All button to display all of the columns Click the Default View button to show only the most commonly used path parameters including Path Status Delay Mode Delay Value and Relative Path Loss columns Select the columns to display in the grid Click OK to save the changes and close the window Click Cancel to abandon the changes and close the window The grid displays the updated settings 2 7 2 3 Modulation Use Path Modulation to set the Fading Type such as Rayleigh or Rician To change the Path Modulation use the Path Modulation column in the grid shown in Figure 2 64 NOTE Setting all paths to Off disables the output signal 2 7 2 4 Velocity and Doppler To set a unique velocity for each path use the Fading Doppler Vel column in the grid or the Velocity textbox in the Path Modulation Parameters window To set a unique Doppler for each path use the Fading Doppler column in the grid or the Doppler textbox in the Path Modulation Parameters window The path Doppler setting is related to the Path Velocity setting If you set the path Velocity SR5500 TestKit calculates the path Doppler value and resets it appropriately If you set the path Doppler SR5500 TestKit calculates the path Velocity and resets it appropriately The Carrier Frequency Doppler and Velocity parameters are interdependent Whe
48. a single path enabled 1 2 No connection 1 No connection Connected with a single path enabled 4x4 MIMO MODE 1 1 Connected with a single path enabled ak 2 No connection f SPIRENT ssor NLMICALIONS CHAPTER TWO OPERATION REFERENCE 33 Channel Mode INPUT OUTPUT STATUS 1 3 No connection 1 4 No connection 2 1 No connection 2 2 Connected with a single path enabled 2 3 No connection 2 4 No connection 3 1 No connection 3 2 No connection 3 3 Connected with a single path enabled 3 4 No connection 4 1 No connection 4 2 No connection 4 3 No connection 4 4 Connected with a single path enabled NOTE The SR5500 resets the Time Elapsed indicator to zero and continues to play when a parameter is changed during playback The SR5500 resets the Time Elapsed indicator to zero and stops when a parameter is changed while paused Additive impairments are unaffected by the Play Stop and Pause buttons NOTE The player state does not affect the additive interferer state If AWGN is enabled it is present even if the player is stopped 2 2 2 7 1 0 Controls and Indicators Below the Player Controls and Indicators are the 1 0 Controls and Indicators The Carrier Frequency Control and Indicators are on the left The current carrier frequency is shown as is the current Band and Channel for the selec
49. a Framework and a development environment is available from a myriad of books and web based resources The following are some useful related web links to get started e http www microsoft com net Microsoft s homepage on the subject e http msdn microsoft com netframework downloads howtoget asp NET Framework download site SPIRENT sepias inovasi Communications 5 Remote Programming Interface Operation 5 1 Overview A computer or terminal can control the SR5500 TestKit application by issuing commands through the RS 232 GPIB or Ethernet remote control ports The following control link protocols are supported e LANCR LF e IEEE 488 2 GPIB LAN CR LF carriage return line feed is a simple command line protocol and allows you to control TestKit SR5500 application from a terminal or a computer using a TCP IP socket connection GPIB General Purpose Instrumentation Bus is the industry standard parallel bus instrument control protocol SR5500 Testhit strictly adheres to the IEEE 488 2 Specification 5 2 Remote Control Features The Remote Programming Interface gives you the ability to remotely control the TestKit application Before processing remote commands you must load the TestKit application and make a connection to the SR5500 Instrument s After the first setup this can be done automatically using a command line option as described in Section 5 3 6 on page 142 SR5500 TestKit commands and queries are arrange
50. be about 60 dBm as shown in Figure 1 15 Figure 1 15 Spectrum Analyzer Output Signal of SR5500 at 900 MHz 1 7 Quick Start Using Test Assistant This procedure uses the Test Assistant to step through an example of a GSM standard Specification Test Test Assistant automatically configures the SR5500 for the specific test application A Base Station Emulator circulator and a DUT GSM Mobile are used for this procedure Figure 1 16 shows the setup for the Mobile Test Base Station Emulator SR5500 Circulator UUT RF RF IN OUT RF LO IN OUT OUT 2 IN OUT IN OUT 3 DOWNLINK UPLINK Figure 1 16 Mobile Test Setup 1 Connect the Base Station Emulator RF Output Port to the Channel 1 RF IN of the SR5500 with the appropriate cable 2 From Channel 1 RF OUT on the SR5500 connect to Port 1 of a Circulator using the appropriate cable 3 Connect Port 2 of the circulator to the Antenna Port of the GSM DUT mobile phone for this example This completes the required connections for the downlink path Base Station to Mobile Station REI J nspired innovation Ti PMU Mca Corns SPI 22 SR5500 USER MANUAL 4 Connect Port 3 of the Circulator to the RF Input Port of the Base Station Emulator This connection establishes the unimpaired uplink path Mobile Station to Base Station 5 After completing the interconnections outlined in Figure 1 16 power on all instruments in the test setup Before procee
51. called DELay is a command under the PATH1 root command group Its short form is DEL and its long form is DELay The following are valid combinations CHAN PATH1 DELay 10 0 CHAN1 PATH1 DEL 10 0 CHAN1 PAtH1 dELlAy 10 0 The first example shows the first mnemonic using the long form The second example shows the the short form The third example shows a combination of upper and lower case letters The initial colon is implied and skipped The following are not valid combinations CHAN PATH1 DELa 10 0 CHAN1 P1 DELay 10 0 In the first example the DELay mnemonic is neither in long or short form In the second example the PATHI mnemonic is invalid ee SPIRENT sm THU CaCl ons 146 SR5500 USER MANUAL 5 4 6 Hierarchical Default Format There are default sub mnemonics for many instances of the hierarchical level of a command structure When these commands are addressed the default sub mnemonics need not be explicitly entered These defaults are presented in square brackets in Chapter 6 on page 153 Use the default sub mnemonics for both parameter set and query commands For example the Channel 1 path 1 delay command is presented as CHAN PATH1 DELay VALue The current setting for this frequency can be queried in serveral ways CHAN1 PATH DELay VALue CHAN PATH1 DEL VAL CHAN PATH1 DEL The first example is the long format of the full implementation of the query The sec
52. complete the test run before running DEE to verify that the state file compiles properly and that no errors occur 1 Use the DEE COMP FILEn command to set the DEE files for each instrument where n is the unit For example if the GUI is in 2 unit mode DEE COMP FILE1 C Documents and Settings My Documents DEE Files DEEFile1 stb DEE COMP FILE2 C Documents and Settings My Documents DEE Files DEEFile2 stb 2 Use the DEE COMP BEG command to begin compilation of the files DEE COMP BEG 3 Use the DEE COMP STAT command to query the compile status and wait for Completed message DEE COMP STAT 4 Repeat Step 3 until either Completed or Failed is returned If the message comes back as Failed there was a compile error IF DESIRED Use DEE COMP ABORT command to abort the compile 5 When the compile has completed use DEE STATE ON command to enable DEE DEE STATE ON NOTE This can take some time to complete execution Once Enabled the only commands accepted are enumerated below Other commands will fail 6 Use the PLAY command to begin playing the DEE profile PLAY 7T Use the PAUSE command to pause the DEE playback or use STOP to stop the DEE playback and reset it back to state 1 PAUSE 8 Use the DEE CSTATE query to query the current state number DEE CSTATE 9 Use DEE CLOOP query to query the current dee loop number DEE CLOOP SPIRENT mm mmumcations CHAPTER SIX COMMAND REF
53. display the Channel Birth Death Settings window Channel 1 Birth Death Settings Birth Death Parameters Number of Bins Birth Death Enabled Paths State Duration sec Delay Bins Delay Values us Bins18 foo fio fo fo fo fo feo fo Bins 9 16 8 0 9 0 10 0 Birth Death Wizard Reset Bins Figure 2 70 Birth Death Settings Window The Birth Death Wizard allows you to setup the Birth Death parameters To use the Birth Death Wizard click the Birth Death Wizard button on the lower left of the Birth Death Settings window SR5500 Testkit displays the Birth Death Wizard window as shown in Figure 2 71 _ SPIRENT inspires innovation Communications 68 SR5500 USER MANUAL Birth Death Wizard Number of Delay Bins Initial Delay Delay Resolution Figure 2 71 Birth Death Settings Wizard Set the number of delay bins it should be greater than the number of paths that have Birth Death delay SR5500 TestKit indicates the paths that have Birth Death delay in the read only box labeled Birth Death Enabled Paths The maximum number of delay bins is 64 Set the Initial Delay and the Resolution or the Increment Delay and click OK SR5500 TestKit sets the Birth Death parameters to match your input You can edit the delay bin values directly You can reset them all to zero with the Reset Bins button You can also edit the State Duration To save your changes and close the window click OK To abandon the changes and clos
54. h34_h33_Imag R44 h42_h21_Real R124 h43_h42_Real R204 h34_h43_Real R45 h42_h21_Imag R125 h43_h42_Imag R205 h34_h43_Imag R46 h42_h31_Real R126 h43_h13_Real R206 h34_h14_Real R47 h42_h31_Imag R127 h43_h13_Imag R207 h34_h14_Imag R48 h42_h41_Real R128 h43_h23_Real R208 h34_h24_Imag R49 h42_h41_lmag R129 h43_h23_lmag R209 h34_h24_Real R50 h42_h12_Real R130 h43_h33_Real R210 h44_h11_Real R51 h42_h12_Imag R131 h43_h33_Imag R211 h44_h11_Imag R52 h42_h22_Real R132 h14_h11_ Real R212 h44_h21_Real R53 h42_h22_ Imag R133 h14_h11_Imag R213 h44_h21_Imag R54 h42_h32_Real R134 hi4_h21_ Real R214 h44_h31_Real R55 h42_h32_Imag R135 h14_h21_Imag R215 h44_h31_Imag R56 h13_h11_Real R136 h14_h31_Real R216 h44_h41_Real R57 h13_h11_Imag R137 h14_h31_Imag R217 h44_h41_Imag R58 h13_h21_Real R138 h14_h41_Real R218 h44_h12_Real R59 h13_h21_Imag R139 h14_h41_Imag R219 h44_h12_Imag R60 h13_h31_Real R140 h14_h12_Real R220 h44_h22_Real R61 h13_h31_Imag R141 h14_h12_Imag R221 h44_h22_ Imag R62 h13_h41_Real R142 hi4_h22_ Real R222 h44_h32_Real R63 h13_h41_Imag R143 h14_h22_Imag R223 h44_h32_Imag R64 h13_h12_Real R144 h14_h32_Real R224 h44_h42_Real SPI ee mm mcations 170 SR5500 USER MANUAL R65 h13_h12_Imag R145 h14_h32_Imag R225 h44_h42_Imag R66 h13_h22_ Real R146 h14_h42_Real R226 h44_h13_Real R67 h
55. micro cellular environments with low mobility to macro cellular environments with high speed mobility With a channel modeling engine capable of an assortment of configurations the SR5500 can analyze the performance of current and emerging air interface technologies such as EDGE GSM GPRS CDMA2000 WCDMA 802 16 and 802 11a b g in representative deployment conditions without leaving the test lab To facilitate testing that requires co channel interference the SR5500 optionally includes the ability to generate AWGN The SR5500 can be utilized in both Handset and Base Station test applications as shown in Figure 1 4 and Figure 1 5 These capabilities make it possible for the SR5500 to play a valuable role in all phases of the product realization cycle Handset Test Configuration SR5500 Wireless Channel Emulator Figure 1 4 SR5500 Handset Test Setup Base Station Test Configuration SR5500 Wireless Channel Emulator Figure 1 5 SR5500 Base Station Test Setup 1 2 1 Applicable to All Design Phases Comprehensive performance evaluation throughout the product development cycle improves the probability of identifying potential design issues at a stage where they can be easily addressed The SR5500 plays a valuable role throughout the product realization process Fr seeen SPIRENT inspired innovation Communications 10 SR5500 USER MANUAL 1 2 1 1 Research and Development Early in the design and standardization
56. movstion Communications 32 SR5500 USER MANUAL Use the Play button EJ to cause the fading emulation playback to proceed Use the Stop button E to stop the fading emulation playback and reset the Elapsed Time to zero Use the Pause button ad to temporarily suspend the fading emulation playback While paused use the Play button to resume emulation playback While stopped or paused the SR5500 does not vary the signal passing through it The signal is subjected to the exact fading conditions at the moment indicated by the Elapsed Time indicator While stopped the fading channel behaves as if a single path were enabled with no modulation The delay of this path matches what is set for Path 1 of the particular channel The following table describes the state of the instrument when stopped for the various channel modes Channel Mode INPUT OUTPUT STATUS SINGLE CHANNEL 1 1 Connected with a MODE single path enabled 1 2 No connection 2 1 No connection 2 2 RF Bypass Enabled DUAL CHANNEL MODE 1 1 Connected with a single path enabled 1 2 No connection 2 1 No connection 2 2 RF Bypass Enabled TX DIVERSITY MODE 1 1 Connected with a single path enabled 1 2 No connection 2 1 No connection 2 2 No connection RX DIVERSITY MODE 1 1 Connected with a single path enabled 1 2 Connected with a single path enabled 2 1 No connection No connection 2x2 MIMO MODE 1 1 Connected with
57. signal Version 2 00 Release ASA DATE AUGUST 2005 e Added support for control of up to four SR5500 units from a single TestKit GUI e Increased accuracy of output Power Meter when noise is enabled e Added real time C N measurement to main window e Added settable duty cycle to Power Meter parameters e Increased allowable number of averages on Power Meter e Resolved issue with Test Assistant CDMA2K Fading Profile 5 where paths were being set to Rayleigh instead of static e Added 802 16 WiMAX Models to the Test Assistant e Added Round 12dB Doppler shape for 802 16 WIMAX testing e Increased resolution of Rayleigh Doppler velocity and frequency to accommodate 802 16 WIMAX testing f SPI RE NT nspired Innovation MT mmumcations 2 Operation Reference 2 1 Overview SR5500 TestKit is a PC based Graphical User Interface GUI for the configuration and control of the SR5500 TestKit runs under the Microsoft Windows operating system delivering the same ease of use and GUI features that Windows provides These features make it easy to use the SR5500 test system to perform sophisticated tests in a wide range of communication environments NOTE SR5500 TestKit has already been installed on the PC that accompanies the SR5500 e Although SR5500 Testkit is already installed on the accompanying PC an SR5500 TestKit Install CD is included in the Manual binder Use this CD to reinstall the a
58. the Signal Source to the RF1 Input of the SR5500 2 Connect the Measurement Device to the RF1 Output of the SR5500 Measured Value A Enter the measured value in the Textbox and click Next gt to proceed to the next step Instructions 1 Connect the RF1 Output of the SR5500 to the RF2 Input Click Next gt to proceed to the next step the measurement will made automatically Figure 2 52 Phase Calibration Wizard Step Two Automatic Mode a SPIRENT inspired innovation Communications CHAPTER TWO OPERATION REFERENCE 57 Phase Calibration Wizard Step 2 of 3 Instructions 1 Connect the Signal Source to the RF2 Input of the SR5500 2 Connect the Measurement Device to the RF 1 Output of the SR5500 Measured Value Enter the measured value inthe Textbox and click Next gt to proceed to the next step Mode Manual Cancel Figure 2 53 Phase Calibration Wizard Step Two Manual Mode Phase Calibration Wizard Step 3 of 3 Instructions 1 Connect the RF2 Output of the 3R5500 to the RF2 Input Click Next gt to proceed to the next step the measurement will made automatically Mode Automatic Figure 2 54 Phase Calibration Wizard Step Three Automatic Mode 4 i SPIRENT spires innovation Communications 58 SR5500 USER MANUAL Phase Calibration Wizard Step 3 of 3 Instructions 1 Connect the Signal Source to the RF2 Input of the SR5500 2
59. the desired channel by clicking the appropriate tab at the top of the View window Output 1 a i B PEt tt LL a Res BW 10 KHz E E E PE tT LL AWGN Bandwidth 65 v 80 00 E Noise Receiver Bandwidth Carrier Power dBm Bit Rate Units v M LI 110 00 900 Frequency MHz File View Configuration Execute Tools Units Help Selected Unit o Cael Ses MO we Channel Editor Interferer State Channel gt Player Ratio AWGN Bandwidth 5 80 Interference Editor 3 a Noise Receiver Bandwidth 13 90 H E oe ow Carrier DEE Bit Rate 100 Instrument Units Setup 120 00 Summary 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 Frequency MHz Playback Controls All Units Elapsed Time 00 00 0 0 0 Power dBm Freg MHz BARPA Input Input al Bee dBm dBm Band Ke E _ eur Cows DEN 5 o CCS CCE D OO O O EO ae O E e Channel Me nS Ocverice MEN TE oo CCE ofa CCS S e Channel Mode 2x2 MIMO RF Band Lower Technology UMTS Unit Under Test UE Unit Fading Uncorrelated Unit AWGN Uncorrelated Status Not Connected Figure 2 73 Interference Editor 2x2 MIMO Mode ei pr SPIRENT inepires innovation Communications 70 SR5500 USER MANUAL A SRE SO TestKit untitled it 2106 207 Ha MON TH Hii EME BHD Hi HIS Hi MAT ti Frequency RHI Unit 1 2 Output 3 0G CE C EX ES 009 CET ota oer
60. the matrix is tested for positive definiteness and the Path Matrix Status updates If the test for positive definiteness fails the Path Matrix Status displays Invalid in red if it passes it displays Valid in green Each complex value is tested to make sure the magnitude is less than or equal to one An error box displays if the magnitude of any complex value entered is greater than one 1 You can enter a different complex matrix for each path To lock the paths together select the Copy To All Paths checkbox The displayed matrix then applies to all paths in the system To reset all matrices to zero click the Clear All Paths button The Correlate 4x4 MIMO systems option allows you to correlate two 4x4 MIMO units When this is selected Units 1 2 and Units 3 4 are 100 Correlated After entering all values click the OK button to implement the matrix or click the Cancel button to discard any changes Er SPIRENT inspired innovation Communications 106 SR5500 USER MANUAL Use the Export button to export the correlation values to a tab delimited text file that can be modified and imported using the Import button SPIRENT mi OTT Ca ors 3 Technical Reference 3 1 Overview Wireless communication is a demanding application that requires complex air interface protocols to seamlessly interact and harsh radio channel effects to be mitigated When a wireless signal is sent from the transmitter to the receiv
61. was enabled All three conditions needed to exist for this issue to present itself Version 3 00 Release ASA DATE NOVEMBER 2007 e Added support for the SR5500M Hardware platform NOTE Version 3 0 of the system software only supports SR5500M hardware It does NOT support legacy SR5500 hardware Users of the SR5500 should use either Version 2 30 Version 3 01 or greater of the TestKit software e Added support for the MIMO option e Added the ability to tune the phase of the RF Inputs and Outputs Version 2 30 Release ASA DATE MAY 2007 e Added the ability to set Complex Correlation between any two channels located in different SR5500 systems In addition a unique Complex Correlation value can be specified between each corresponding path between the two channels e Added the ability to change C N and Doppler Velocity Parameters within DEE e Added the latest frequency bands channels and fading profiles specified in 3GPP TS 25 101 Release 6 and 7 Version 2 21 Release ASA DATE DECEMBER 2006 e Resolved an issue in RPI mode that caused DEE to fail unless DEE had been run manually at least once since power up of the SR5500 Version 2 20 Release ASA DATE DECEMBER 2006 e Added the Remote Programming Interface view This allows for remote control of the TestKit application via either the TCP IP protocol or GPIB e Added the ability to change Angle of Arrival K Factor and Frequency Shift Parameters within DE
62. 0 As with most Windows applications certain settings are saved in the file When the file is opened at a later time those settings are restored Select File gt New Settings File to reset settings back to their default values Use Open Settings File Save Settings File Save Settings File As just as you would with any other Windows application Use the appropriate toolbar icons instead of selecting from the File menu 2 6 1 Settings Saved in the Settings File The following settings are saved in the Settings File and restored after opening a settings file e System configuration Channel Configuration and RF Frequency Mode e Test Assistant settings Technology Unit Under Test Band Channel Profile e Channel I O settings Carrier Frequency Input Power Output Power Bypass e All path settings in the Channel Editor view NOTE ON MULTI UNIT USE The settings for all four units are always saved in the settings file This is true even if only one unit is currently active In previous versions of TestKit the number of active units was stored in the system registry For versions 3 0 and higher the number of systems is stored in and recalled from the settings file a ee SPIRENT Communications Inspired Innovation CHAPTER TWO OPERATION REFERENCE 43 The following settings are saved in the System Registry and restored after opening TestKit e Communications settings for connected units IP address
63. 0 00 00 11 59 30 D000 00 12 59 30 D000 00 13 59 20 O0 00 00 14 9 10 O0 00 00 15 59 10 00 00 00 16 59 Ob d 00 00 17 58 a0 00 00 00 18 58 80 00 00 00 14 58 80 00 00 00 20 58 70 00 00 00 77 58 60 00 00 00 22 53 60 00 00 00 25 58 00 00 00 24 56 40 0000 0025 5840 0000 0025 58 30 00 00 00 227 58 20 00 00 00 275 58 20 0000 0023 58 10 O0 00 00 20 56 00 OOOO 00 41 18 00 at O00 00 he ir a H 4 b 4 Sheet i Dg Cp AybeShages w Cc Figure 2 96 DEE Template Example Changes NOTE When exporting a file if a row is encountered without any data it is treated as the end of the file If you want to have a number of states where nothing changes we suggest you fill in the state duration column for all of these states The data does not need to change but it does need to exist m SPIRENT ipies innovation Communications 84 SR5500 USER MANUAL Import State File Export State File Hide Unhide RF1 AWGN Status ei lee ad RF1 Output RF2 Output State Power Power 0 OFF Time Stamp Duration s dBm dBm 1 ON 00 00 01 00 1 000 60 00 F0 00 00 00 590 00 100 00 Figure 2 97 Example of a Column Having Two States C D E H Update Time Import State File Export State File 2 x 2 MIMO Mode Hide Unhide RF1 AWGN Status eee RF1 Output RF2 Output State Power Power 0 OFF Duration s dBm dBm 1 ON 00 00 01 00 1 000 60 00 1 000 f0 00 1 000 1 000 60 00 1 000 90 00
64. 0 00 16 59 40 100 5 0 1 0 0 16 0 15 0 18 00 00 00 17 59 40 110 60 1 00 170 140 19 00 00 00 18 59 40 120 70 1 00 180 130 2 00 00 00 19 59 30 13 0 10 0 1 0 0 19 0 12 0 21 00 00 00 20 59 30 0 9 0 1 0 0 20 0 11 0 22 00 00 00 21 59 20 40 8 0 1 0 0 210 10 0 23 00 00 00 22 59 20 30 70 1 0 0 22 0 9 0 24 00 00 00 23 59 20 20 60 1 00 230 8 0 25 00 00 00 24 59 10 10 50 1 00 24 0 70 26 00 00 00 25 59 10 00 40 1 00 20 4 0 27 00 00 00 26 59 10 10 3 0 0 00 26 0 5 0 28 00 00 00 27 59 00 20 20 0 00 27 0 40 29 00 00 00 28 59 00 30 10 1 0 0 28 0 3 0 30 00 00 00 29 58 90 40 00 0 00 230 20 31 00 60 06 30 58 90 50 410 1 00 30 0 10 32 00 00 00 31 58 90 60 20 0 00 310 00 00 00 00 32 53 80 10 3 0 1 00 32 0 1 0 v lt gt Figure 2 95 DEE Template 2 8 2 2 Editing the Emulation File The emulation file can be modified using standard Excel methods A typical Emulation file is shown in Figure 2 95 This file performs the following functions In State 1 1 Set State Duration to 1 second each state duration thereafter remains 1 second unless the particular state is changed 2 Set the output power of the SR5500 to 60 00 3 All other parameters remain as defined in Static mode In State 2 1 Modify the output power of the SR5500 In State 3 1 Modify the output power of the SR5500 2 Turn Channel 1 Path 2 ON 1 ON O OFF In States 4 5 1 Modify the output power of the SR5500 In State 6 1 Modify the output power of the S
65. 00 Testhit for a pending response e Senda Program Message to SR5500 TestKit e Ifthe message was a query command poll SR5500 Testhit for the command response SR5500 TestKit provides a GPIB status byte to indicate its current state Possible states include e Ready no events registered OOH e Message Available no events registered 10H Ready indicates that SR5500 Testhit does not have a message to send and is ready to accept a command If the unit is processing a previous command it indicates a ready state but will not accept the command until it is done processing Because of this it is important to set a timeout value of at least one second although most commands execute within 100 ms Message Available indicates that SR5500 TestKit currently has a message to send to the controller SR5500 TestKit will only have a message available if one is requested using a query command ee SPIRENT sm THU CaCl ons 148 SR5500 USER MANUAL When SR5500 Testhit is ready to respond it sets the serial poll status to 10 hex After the controller conducts the read operation the SR5500 Testhit sets the serial poll status to OO hex START Serial Poll Read Response Yes ERROR Status 00H mo Illegal Status Yes Send Command Serial Poll ERROR status 00H js Illegal Status Figure 5 4 Typical Bus Controller Flowchart Sending GPIB Command f SPI ee RE NT nspired Innovation m
66. 1 000 100 00 Figure 2 98 Example of Column Having Six States 2 8 2 3 Setting the Channel Mode You can set the DEE template for DUAL SINGLE Channel or 2x2 MIMO Mode In DUAL mode the template displays information for Channel 1 Paths 1 12 AND Channel 2 Paths 1 12 In SINGLE Mode the template displays information for Channel 1 Paths 1 24 In 2x2 MIMO Mode the template displays information for the MIMO Channel for Paths 1 24 and the MIMO Sub Channel parameters for h11 h12 h21 and h22 2 8 2 4 Updating the Timestamps The Update Timestamp button updates the Timestamp Column This column is useful when determining how much time it takes to reach state X especially when the state duration of individual states vary T SPIRENT inspires innovation Communications CHAPTER TWO OPERATION REFERENCE 85 2 8 2 5 Exporting Files to STB Format To use the information from the Excel template in DEE you must export the information to STB format This is a text based format the TestKit GUI uses to import the state change information The Export State file button exports the information in the DEE template to a STB state file 2 8 2 6 Importing Files from STB or SSX Format You can import previously exported STB files and SSX files created with earlier versions of the DEE template using this function The Import State file button Imports the information in a SSX STB state file to the DEE template 2 8 2 7 Modifying the Template Vie
67. 13_h22_Imag R147 h14_h42_Imag R227 h44_h13_Imag R68 h13_h32_Real R148 h14_h13_Real R228 h44_h23_Real R69 h13_h32_Imag R149 h14_h13_Imag R229 h44_h23_Imag R70 h13_h42_Real R150 hi4_h23_Real R230 h44_h33_Real R71 h13_h42_Imag R151 h14_h23_Imag R231 h44_h33_Imag R 2 h23_h11_Real R152 h14_h33_Real R232 h44_h43_Real R73 h23_h11_Imag R153 h14_h33_Imag R233 h44_h43_Imag R74 h23_h21_Real R154 h14_h43_Real R234 h44_h14_Real R75 h23_h21_lmag R155 h14_h43_Imag R235 h44_h14_lmag R76 h23_h31_Real R156 h24_h11_Real R236 h44_h24_Imag R77 h23_h31_Imag R157 h24_h11_Imag R237 h44_h24 Real R78 h23_h41_Real R158 h24_h21_Real R238 h44_h34_Real R79 h23_h41_lmag R159 h24_h21_Imag R239 h44_h34_lmag CORRelation UNIT IMODe lt string gt CORRelation UNIT IMODe Set the Correlation Coefficient Mode of the given unit Only COMPLex correlation is Supported in MIMO 2x2 4x4 mode Parameter Range Selection RST Resolution lt string gt ENVelope COMPonent COMPLex ENVelope DEE CSTate Query the current DEE state number DEE ETIMe Query the current DEE elapsed time DEE CLOOP Query the current DEE loop number DEE MODe lt string gt DEE MODe Set the DEE Playback Mode Parameter Range Selection RST Resolution lt string gt WRAParound ONCE ONCE SPI RE NT nspired Innovation mmumcations CHAPTER S
68. 2 channels 24 Total 24 per channel x 4 channels 96 Total 24 per channel x 16 channels 384 Total On Off Static None Rayleigh Rician Log Normal Delay Mode Fixed Sliding Sinusoidal Birth Death 0 01 to 2000 00 Hz 0 01 Hz 1 to 2000 m 1 Ti S P RE nspired Innovation Communications 202 SR5500 USER MANUAL Din 1 to 200 m Resolution Ds and Din 0 1m Velocity 10 to 500 km h Resolution 0 001 km h fa O to 2000 Hz Resolution 0 01 Hz 7 5 4 Phase Shift Range O to 360 degrees Resolution 0 1 degrees 7 5 5 Path Loss Characteristics Relative Path Loss Range with multiple paths enabled O to 32 dB Resolution 0 1 dB Accuracy 0 1 dB 7 5 6 Path Delay Characteristics Fixed Delay Range O to 2000 usec Resolution 0 1 nsec Accuracy 0 5 nsec Sinusoidal Delay Start and Stop Delay Range O to 2000 usec Resolution 0 1 nsec Oscillation Rate 0 001 to 32 767 Hz Resolution 0 001 Hz i SPIRENT mi MUMCAC ons CHAPTER SEVEN TECHNICAL SPECIFICATIONS 203 Birth Death Delay Number of Delay Bins Delay Bin Range Resolution State Duration Resolution idel Path Fading Characteristics Fading Rayleigh Amplitude Distribution Deviation from Theoretical CPDF exceeds the following requirements From 10 to 30 dB of mean power level Level Crossing Rate LCR Accuracy exceeds the following requirements From 3 to 30 dB of mean power level
69. 2C1_Imag i SPIRENT sis montin cations 164 SR5500 USER MANUAL 3 UNITS Single Channel Complex Correlation Index Parameter U1C1_U3C1 me U2C1_U3C1_Real U2C1_U3C1_Imag 4 UNITS Single Channel Complex Correlation Index Parameter Index Parameter EEE A EE ea U1C1_U2C1_Imag U1C1_U4C1 me CC U1C1_U3C1_Imag U2C1_U4C1 ace R5 U2C1_U3C1_Imag R11 U3C1_U4C1_Imag 2 UNITS 2x2 MIMO Complex Correlation Index Parameter Index Parameter Index Parameter Lm U1h21 _U1h11 Real R20 U2h21_ U1h11 Real Lu U2h12 U2h21 Real U1h21_U1h11_Imag R21 U2h21_U1h11_Imag U2h12_U2h21_Imag R2 U1h12 Uth11 Real R22 U2h21 U1h21 Real R42 U2h22 U1h11 Real U1h12_U1h11_Imag R23 U2h21_U1h21_Imag U2h22_U1h11_Imag cm U1h12 U1h21 Real R24 U2h21_U1h12 Real LE U2h22_U1h21 Real e U1h12_U1h21_Imag U2h21_U1h12_Imag R45 U2h22_U1h21_Imag U1h22 U1h11 Real U2h21 U1h22 Real U2h22 U1h12 Real U1h22_U1h11_Imag U2h21_U1h22_Imag U2h22_U1h12_Imag R8 U1h22 U1h21_Real U2h21 U2h11 Real U2h22 U1h22 Real Ra U1h22_U1h21_Imag U2h21_U2h11_Imag R49 U2h22 U1h22_ Imag U1h22_U1h12 Real U2h12 Uth11 Real Lu U2h22 U2h11 Real R11 U1h22_U1h12_lmag R31 U2h12_U1h11_Imag U2h22_ U2h11_Imag R12 U2h11_U1h11_Real R32 U2h12_U1h21_ Real R52 U2h22 U2h21_Real R13 U2h11_U1h11_Imag R33 U2h12_U1h21_Imag U2h22 U2h21_Imag R14 U2h11_U1h21_Real R34 U2h12_U1h12_Real ES U
70. 2C1_U3C2_Imag cm U1C1 U2C2 Real R16 U2C1 U3C1 Real R26 U2C2 U3C2 Real U1C1_U2C2_Imag R17 U2C1_U3C1_Imag R27 U2C2 U3C2_Imag om U1C2 U2C2 Real R18 U2C2_U3C1 Real R28 U3C1_U3C2_Real U1C2_U2C2_Imag R19 U2C2_U3C1_Imag R29 U3C1_U3C2_Imag 4 UNITS Dual Channel Complex Correlation Index Parameter Index Parameter Index Parameter Ro usci vice Real mie u2c2usc1 mag RAB USCI_UACI Real si RS VIC1_U2Ci Imag R22 VAG2_U3C2_Real R41 UBC2_UACI_Imad Pa ica uzot nan nes vicz vsc2 mag R42 utci usce U1C2_U2C1 mae R24 U2C1_U3C2_ Real U1C1_U4C2 ee cm U1C1_U2C2_Real R25 U2C1_U3C2_Imag R44 U1C2_U4C2 Real U1C1_U2C2_Imag R26 U2C2_ U3C2 Real U1C2_U4C2_Imag CE U1C2_U2C2_ Real R27 U2C2_U3C2_Imag CCE U2C1_U4C2_Real R9 U1C2_U2C2_Imag U3C1_U3C2_Real R47 U2C1_U4C2_Imag U2C1_U2C2_ Real U3C1_U3C2_Imag Eea U2C2_U4C2_Real R11 U2C1_U2C2_lmag R30 U1C1_U4C1_Real U2C2_U4C2_Imag R12 U1C1 U3C1_ Real R31 U1C1_U4C1_Imag R50 U3C1_U4C2_Real R13 U1C1_U3C1_Imag R32 U1C2_U4C1_Real U3C1_U4C2_Imag R14 U1C2_U3C1_Real R33 U1C2_U4C1_Imag LE U3C2_U4C2_ Real Hs U1C2_U3C1_Imag U2C1_U4C1_Real bes U3C2_U4C2_Imag U2C1_U3C1_Real U2C1_U4C1_Imag tow U4C1_U4C2_Real R17 U2C1 U3C1 Imag R36 U2C2_U4C1_Real U4C1_U4C2_Imag R18 U2C2_U3C1_Real R37 U2C2_U4C1_Imag 2 UNITS Single Channel Complex Correlation Index Parameter R1 U1C1_U
71. 2h22_U2h12_Real U2h11_U1h21_Imag U2h12_U1h12_Imag com U2h22_U2h12_Imag R17 U2h11_U1h12_Imag R37 U2h12_U1h22_ Imag R18 U2h11 U1h22 Real R38 U2h12 U2h11 Real Sf R19 U2h11_U1h22 Imag R39 U2h12_U2h11_Imag Se SPIRENT ses innovation catons CHAPTER SIX COMMAND REFERENCE 165 3 UNITS 2x2 MIMO Complex Correlation RO R55 as above Index Parameter Index Parameter Index Parameter U3h11 _U1h11 Real U3h21 U1h22 Real R100 U3h12 U2h21 Real R57 U3h11_U1h11_Imag U3h21_U1h22 Imag R101 U3h12_U2h21_Imag U3h11_U1h21 Real U3h21 U2h22 Real R112 U3h22 U1h21 Real U3h11_U1h21_Imag U3h21_U2h22 Imag R113 U3h22_U1h21_Imag U3h11_U1h12_Real R88 U3h21_U3h11_Real U3h22_U1h12_Real RG2_ UShII UIR22 Real R90 ush12 utni Real R116 U3n22_Uin22_Real R63 Uah11 U222 mag R91 U3h12 U111 mag R117 USN22_UIN22 me pres vans Reen Roz usmz uanza ea a8 uona2 vanti Real _ R65 U3h11_U2h11 aoe U3h11_U2h21_Real R67 R94 U3h11_U2h21_ Imag U3h12_U1h21 TS U3h12_U1h12_Real R119 U3h12_U1h12_Imag U3h22_U2h11 U3h22_U2h21 Real R121 U3h22_U2h21_Imag R68 U3h11_U2h12 Real CE U3h12 U1h22 Real R122 U3h22 U2h12 Real R69 U3h11_U2h12_Imag R97 U3h12_U1h22 Imag R123 U3h22_U2h12 Imag U3h11_U2h22 Real Lu U3h12 U2h11 Real R124 U3h22 U2h22 Real R71 R72 U3h11_U2h22_Imag U3h21_U1h11_Real
72. 39 Output Power Controls Dual Channel Mode Output C N Measured Set Ratio Output Output GE OC CC CC ES En of CC CC Figure 2 40 Output Power Controls 2x2 MIMO Mode e SPIRENT mers LOmmunica tions CHAPTER TWO OPERATION REFERENCE 51 Unit 1 2 Output Measured Output dEm ES ofS CE EL CES CES ECM CES oS EC CES CES Figure 2 41 Output Power Controls 4x4 MIMO Mode You can also change the nominal RMS output power level by clicking the Up and Down arrows to adjust the value in the textbox The value of the the Nominal RMS Output Power increases or decreases by 1 0 dB increments Holding down the Up or Down arrows causes the value in the textbox to change more rapidly NOTE The following are some of the conditions that can cause the Nominal RMS Output Power to vary from the entered value e Input power measured does not match the Set Input textbox e Playback Engine in Pause mode e Channel Bypass active e Closed Loop Power Control causes the mobile power to be correlated with the fading channel e Sub channels are disabled in the MIMO Advanced Options windows e No paths enabled for this channel e Output Cable Loss correction factor is incorrectly set 2 7 1 10 Measured Input and Output Power Indicators The SR5500 has built in Power Meters that enable real time monitoring of the input and output TestKit displays these power measurements in the Power Measurement Input and
73. 4h22_U3h11_Imag R156 U4h21_U1h11_Real R192 U4hn12_U2h21_ Real R228 U4h22_ U3h21_Real R157 U4h21_U1h11_Imag R193 U4h12_U2h21_Imag R229 U4h22_ U3h21_Imag U4h21_U1h21_Real U4h12_ U2h12_Real U4h22_U3h12_Real R163 R165 U4h21_U1h22_Imag U4h21_U2h11_Real U4h21_U2h11_Imag R199 R201 U4h12_U3h11_Imag U4h12_U3h27_ Real U4h12_U3h21_Imag R235 R237 U4h22_U4h11_Imag U4h22 U4h21_Real U4h22_U4h21_Imag R166 U4h21_U2h21_Real R202 U4h12_U3h12_Real R238 U4h22_ U4h12_Real R167 U4n21_U2h21 Imag R203 U4h12_U3h12_Imag R239 U4h22_ U4h12_Imag CORRelation MODe lt string gt CORRelation MODe Set the Correlation Coefficient Mode of the system Parameter Range Selection RST Resolution lt string gt ENVelope COMPonent COMPLex ENVelope CORRelation TYPe lt string gt CORRelation TYPe Set the Correlation Type for the system se RENT FUMLNICaTIONS nspireg Innovation CHAPTER SIX COMMAND REFERENCE 167 Parameter Range Selection RST Resolution lt string gt INSTrument SUITe INSTrument CORRelation UNIT AWGNCorrelation lt bool gt CORRelation UNIT AWGNCorrelation Disable or enable AWGN correlation for the given unit Parameter Range Selection RST Resolution lt bool gt OFF ON OFF CORRelation UNIT AWGNValid Query whether the current setup of the give
74. A 4 4 gt gt ee 0 5 10 us 0 5 10 us g 5 10 us Figure 3 5 Birth Death Delay Example Birth Death paths have fixed delay value during each defined state but change delay value during a state change Birth Death paths participate in the Birth Death sequence by taking turns changing their location along the delay spread axis During each state only one path changes its temporal delay location This death of the path in its current delay bin and subsequent birth in a new unoccupied bin is performed using a uniform random distribution You define the individual delay bins that make up the distribution set Several parameters must be defined for paths participating in the Birth Death sequence These include e Number of Bins Defines the number of bins that paths configured for Birth Death delay will hop between e State Duration Defines the time between delay state changes e Delay Bin Values Defines the location of the individual delay bins used in the Birth Death sequence ei SPIRENT inspires novation Communications 112 SR5500 USER MANUAL 3 5 Relative Path Loss Relative path loss is a phenomenon where individual signal paths arriving at the receiver are at different absolute power levels The difference in power levels between paths is caused by the physical obstructions in the signal path Referring to Paths A and C in Figure 3 6 Path C arrives at a lower power level then
75. ASA Expiration date embedded in them If this is the case contact Customer Service f ee SPIRENT s Communications CHAPTER TWO OPERATION REFERENCE 97 2 13 Controlling Multiple SR5500 Units The TestKit GUI can control up to four SR5500 units simultaneously with synchronization that allows all fading paths to remain uncorrelated To take advantage of this option connect the SR5500s using the provided digital synchronization cables Additionally you must lock all 10 MHz references using BNC cables 2 13 1 Connecting Synchronization Cables Before using TestKit to control multiple SR5500 units connect them with synchronization cables These cables ensure that fading between channels in different systems remains uncorrelated and when using DEE that the units change states at the same time The following table shows the required connections UNIT PORT UNIT PORT TYPE 1 10 MHz OUT gt 2 10 MHz IN BNC 2 10 MHz OUT gt 3 10 MHz IN BNC 3 10 MHz OUT gt 4 10 MHz IN BNC 1 SYNC OUT gt 2 SYNC IN MDR Digital Cable 2 SYNC OUT gt 3 SYNC IN MDR Digital Cable 2 SYNC OUT gt 4 SYNC IN MDR Digital Cable BNC DIGITIAL MDR SYNC DIGITIAL MDR SYNC Figure 2 108 SR5500 Multi Unit Synchronization When controlling less than four units omit the cables to the systems not being controlled The 10 MHz IN port of system 1 can be driven from an exter
76. CHAN CHAN CHAN F CHAN F CHAN F CHAN F CHAN F CHAN CHAN CHAN F CHAN CHAN F CHAN CHAN F CHAN CHAN F CHAN INTerferer RBWidth CTON CTONO DCYCle lt real gt DCYCle EBNO MEASure MEASure MEASure MEASure MEASure MEASure MEASure MEASure MEASure MEASure MEASure MEASure MEASure MEASure MEASure NUMPaths OUTPPHASe lt real gt OUTPPHASe OUTPut lt real gt OUTPut OVERLOad DELay DELay DELay DELay DELay DELay DELay DELay DELay PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH PATH TAVGexp lt real gt ILEVel ITYPe OAVGexp lt real gt OAVGexp OLEVel OTYPe CALCulated MEASured OTYPe TTHReshold lt real gt TTHReshold MODE FIXed SDELay BDEath MODE SDELay SDELay SDELay SDELay SDELay SDELay SDELay DELay VALue DELay VALue DFRequency DMIN lt real gt DMIN DMAX lt real gt DMAX ORATe lt real gt ORATe PER10d lt real gt DFRequency lt real gt DVELocity lt real gt DVELocity FSHAPe C3DB C6DB ROUNd FLAT R12DB CHAPTER SIX COMMAND REFERENCE 157 SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe
77. E e Added the ability to control multiple SR5500 s with the SR5500 6GHZ EX option simultaneously e Added the ability to turn the RF Output on or off with a single command e Resolved an issue that caused AWGN not to function properly with some hardware R E N nspired innovation Ti PMU Mca Corns ji SPI 26 SR5500 USER MANUAL Version 2 10 Release ASA DATE APRIL 2006 e Added ability to set Rayleigh fading correlation between channels located in different SR5500 systems e Added support for the SR5500 6GHZ EX option which adds the 3300 3850 MHz Band e Added a summary screen to TestKit which allows you to view all configured paths in up to four systems simultaneously e Added the ability to connect to up to four SR5500 units simultaneously in an unsynchronized manner e Extended the C N ratio available when the channel Crest Factor is set to a non default value or when Log Normal is enabled e Significantly increased the speed of DEE compilation by changing the format of the source file from an XML based file SSX to a raw text file STB e Resolved an issue that prevented the SR5500 from being controlled across a network router Version 2 01 Release ASA DATE AUGUST 2005 e Resolved an issue where in some cases noise could be produced at the SR5500 output port when no input signal was presented at the input port This could also have occurred during the OFF time of a non continuous
78. E ES Es 2 rn ooo pooo lt real gt UNIT CHAN PATH LOGNormal SDEViation lt int gt UNIT CHAN PATH LOGNormal SDEViation Set the Log Normal standard deviation for the given path of the given channel in the given unit Parameter Range Selection RST Resolution TE UNIT CHAN PATH LOGNormal STATe lt bool gt UNIT CHAN PATH LOGNormal STATe Set the Log Normal state for the given path of the given channel in the given unit Parameter Range Selection RST Resolution 1104 un 1 to 2 channel 1 to 24 path an OFF ON ton UNIT CHAN PATH LOS AOA lt real gt UNIT CHAN PATH LOS AOA Set the LOS angle of arrival for the given path of the given channel in the given unit Parameter Range Selection RST Resolution to 4 un 1 to 2 channel lt real gt O to 360 I UNIT CHAN PATH LOS DOPPler M ee S PI RENT ses novation cations 186 SR5500 USER MANUAL Reads the LOS Doppler for the given path of the given channel in the given unit This parameter must be set using the UNIT CHAN PATH LOS AOA command Parameter Range Selection RST Resolution EC EE 1 to 2 channel CE lt real gt 2000 to 2000 owe UNIT CHAN PATH LOS KRICian lt real gt UNIT CHAN PATH LOS KRICian Set the Rician K factor for
79. EE view without first disabling DEE 2 The software compiles the Emulation file into a machine readable format A window opens displaying the status of the DEE compile If the compile is successful click the Enter DEE button NOTE If you have previously successfully compiled the file this step is skipped Compile complete Status Warnings Enrors 5 2 2116 PM gt intormaton state U iUa Stating Lompiation of States 2 to end 19 2 21 18 PM gt information State 1 50 Channel Structure for state venfied 110 2 21 18 PM gt Information State 1 50 Compiled 1 states out of 2 11 2 21 18 PM gt information State 2 92 Completed creation of commands 112 2 21 18 PM gt information State 2 94 Computed hashes 13 2 21 18 PM gt information State 2 98 Completed writing header 14 2 21 18 PM gt information State 0 100 Compile Ended Compile completed with 0 eroris and 0 waming s b Enter DEE Cancel Figure 2 101 Compile Status Window 2 8 3 6 Disabling DEE Disable DEE by clicking the Disable button This stops the DEE engine restores the instrument to its original state before entering DEE and re enables access to all TestKit views s _ a SPIRENT sie innovation Communications 88 SR5500 USER MANUAL 2 8 3 7 Playing Running DEE After enabli
80. ERENCE 193 10 Use DEE ETIME to query the elapsed time indicator DEE ETIME 11 Use DEE STATE OFF command to disable DEE DEE STATE OFF This returns the unit to non DEE mode Other commands may now be sent to the unit _ SPIRENT mon PML CCS 194 SR5500 USER MANUAL _ 7 SPIRENT inspires innovation Communications 7 Technical Specifications 7 1 Overview The following specifications describe warranted performance over the temperature range 0 40 degrees C and include a 30 minute warm up time from ambient conditions Supplemental characteristics are in italics and provide useful information by giving non warranted performance parameters The specifications are measured under the following channel conditions unless otherwise indicated RF Input Level 10 dBm CW Signal RF Output Level 30 dBm or maximum allowed One Path On Path Status Static Path Frequency Shift fixed at O Hz Path Delay fixed at O us Channel Configuration Dual RF Channel AWGN Off Channel Crest Factor 15 dB Log Normal OFF NOTE Technical Specifications are subject to change without notice Items marked with a are optional features 7 2 RF Channel Specifications without the SR5500 6 GHz Option Center Frequency Range 400 to 2700 MHz Center Frequency Resolution 0 1 MHz Channel Bandwidth 26 MHz Channel Flatness Amplitude Variation 1dB Group Delay Distortion 30 ns Phase Distortion from Lin
81. EVEN TECHNICAL SPECIFICATIONS 199 7 3 4 Spurious Emission Levels Within Channel 40 dBc maximum Outside Channel but within 400 to 2700 MHz and 4100 to 6000 MHz 10 dBc maximum 7 3 5 RF Physical Interface Characteristics Impedance 50 ohms Input VSWR lt 1 5 Connector Type N Female 6 GHz RF Converter front panel CH1 RF In CH1 RF Out CH2 RF In CH2 RF Out Bypass Mode Insertion Loss 20 dB 7 4 RF Channel Specifications with the SR5500 6 GHz EX Option The channel specifications for the SR5500 equipped with the SR5500 6 GHz EX RF Converter are the same as in Section 7 2 with the following exceptions Frequency Range 400 to 2700 MHz and 3300 to 3850 MHz and 4100 to 6000 MHz 7 4 1 Input Signal Level Autoset Range 400 to 2700 MHz O to 30 dBm Autoset Range 3300 to 3850 MHz 10 to 30 dBm Autoset Range 4100 to 6000 MHz 10 to 30 dBm Damage Level 20 dBm 7 4 2 Output Signal Level Range 400 to 2700 MHz 30 to 110 dBm 1 Ti S P RE nspired innovation Communications 200 SR5500 USER MANUAL Range 3250 to 3850 MHz Range 4100 to 6000 MHz Resolution Accuracy Damage Level 7 4 3 Channel Crest Factor Range Effect on I O Ranges 400 to 2700 MHz Effect on I O Ranges 3300 to 3850 MHz 4100 to 6000 MHz 35 to 110 dBm 40 to 80 dBm 0 1 dB 1 dB 20 dBm 15 to 35 dB Max Input Level 15 Crest Factor Setting dBm Min Input Level 15 Crest
82. Factor Setting dBm Max Output Level 15 Crest Factor Setting dBm Min Output Level 110 dBm Max Input Level 5 Crest Factor Setting dBm Min Input Level 15 Crest Factor Setting dBm Max Output Level 20 Crest Factor Setting dBm Min Output Level 100 dBm Max Input Level 5 Crest Factor Setting dBm Min Input Level 15 Crest Factor Setting dBm Max Output Level 25 Crest Factor Setting dBm Min Output Level 80 dBm 7 4 4 Spurious Emission Levels Within Channel Outside Channel but within 400 to 2700 MHz 3300 to 3850 MHz or 4100 to 6000 MHz 40 dBc maximum 10 dBc maximum 7 4 5 RF Physical Interface Characteristics Impedance Input VSWR i SPIRENT mi MUMCAC ons 50 ohms lt 1 5 CHAPTER SEVEN TECHNICAL SPECIFICATIONS 201 Connector Type Bypass Mode Insertion Loss 7 5 Channel Emulation Characteristics 7 5 1 Number of Paths per Channel Dual Channel Mode Single Channel Mode TX Diversity Mode RX Diversity Mode 2x2 MIMO Channel Mode 4x4 MIMO Channel Mode 7 5 2 Path Characteristics Path Status Modulation Fading Types 7 5 3 Frequency Shift Fixed Frequency Shift Range Resolution High Speed Train Shift Ds N Female 6 GHz EX RF Converter front panel CH1 RF In CH1 RF Out CH2 RF In CH2 RF Out 20 dB 12 per channel x 2 channels 24 Total 24 per channel x 1 channel 24 Total 12 per channel x 2 channels 24 Total 12 per channel x
83. H2 4 OPTIONAL Connect the following cables between the SR5500 and the SR5500 6 GHz EX RF Converter From SR5500 To 6 GHz EX RF Converter Cable Used CHANNEL 1 RF IN IF CH1 OUT Supplied N N cable CHANNEL 1 RF OUT IF CH1 IN Supplied N N cable CHANNEL 2 RF IN IF CH2 OUT Supplied N N cable CHANNEL 2 RF OUT IF CH2 IN Supplied N N cable AUX 1 Unlabeled RJ 45 connector on RJ 45 Cable rear panel 5 Connect the supplied cross over cable from the PC built in Ethernet port not the PC Card Ethernet Port to the SR5500 Ethernet port on the rear panel Optionally you can connect the PC Card Ethernet Port to the LAN NOTE When connecting the 6 GHz EX RF connector to the SR5500 the supplied N N cables must be used in order to maintain level accuracy f SPIRENT mm mmumcations CHAPTER ONE INTRODUCTION 19 6 Turn the power on a Set the AC power switch on the lower right corner of the front panel to the position The SR5500 now executes its power up self test and calibration sequence this takes a few seconds You will hear two beeps and the status light will illuminate green Note The STATUS Light will take a few seconds before turning on b OPTIONAL If the SR5500 6 GHz EX RF Converter is present turn the power on by setting the AC power switch to the position on the rear of the unit c Power on the PC Refer to the PC documentation for details
84. HREE TECHNICAL REFERENCE 129 A sample will be included in the average if the mean of both the previous eight samples and the next eight samples is greater than the trigger level This approach allows the signal to be measured during only the burst on time If the number of averages is large the measurement will likely take place over multiple bursts The number of averages in this case refers to the number of included samples In the case of a signal with a long period between bursts the measurement can take a significant amount of time Figure 3 26 shows a block diagram of the triggering approach Samples from ADC at 78 MHz Block FIFO FIFO 8 blocks deep 8 blocks deep 1 64 us 1 64 us Divide Measured by of Input Averages Level of 16 Samples Average of All samples in FFO of samples accumulated Average of All samples in FFO is AVG gt trigger level Both True If of samples Then accumulated is AVG enable of averages gt trigger switch then latch level output of accumulator and clear the accumulator for the next measurement Figure 3 26 Triggered Power Measurement Block Diagram Figure 3 27 displays an example of how the Power Meter collects samples The input is a 20 MHz wide noise like signal pulsed on and off at a 20 us interval Note that even though some individual samples exceed the set trigger level they are not included in the measuremen
85. IX COMMAND REFERENCE 171 DEE NUMSTates Query the number of DEE states DEE STATe lt bool gt DEE STATe Enable or disable DEE Parameter Range Selection RST Resolution lt bool gt OFF ON OFF DEE COMPile ABORt Abort the DEE compile DEE COMPile BEGin Begin a DEE compile DEE COMPile FILE lt string gt Sets the DEE emulation file for the given unit Parameter Range Selection RST Resolution CO EE EE lt string gt valid path filename Ra DEE COMPile FILE Returns the DEE emulation file for the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 DEE COMPile STATus Query the DEE compile status Possible Responses Aborting Abort command received but not finished processing Aborted Compile was aborted Completed Compile completed successfully Failed i SPIRENT inspires mation nicatians 172 SR5500 USER MANUAL Compile Failed Compiling Compile in process reported during initial compile before individual unit compile beginsd Compiling Unit X Y Complete Compile in progress specifies unit and complete Compiling Unit X Complete Compile in progress reported when one unit is complete but the next not yet begun DEE TYPe lt string gt DEE TYPe Set the DEE Trigger Mode Parameter Range Selection
86. Loss lt real gt UNIT CHAN CBLLoss Offset the Output level of the given channel of the given unit by providing a cable loss correction Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 10 to 10 dB O 0 01 SPIRENT mmumcations nspireg Innovation CHAPTER SIX COMMAND REFERENCE 175 UNLIT CHAN CFACtor lt real gt UNIT CHAN CFACtor Set the Crest Factor for the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 15 to 35 dB 15 0 1 UNIT CHAN CLROVerload Clear the Overload Indicator for the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 UNIT CHAN FREQuency lt real gt UNIT CHAN FREQuency Set the Channel Frequency Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 400 to 6000 MHz 900 0 001 Refer to the BAND command on page 159 for appropriate ranges UNIT CHAN INPPHASe lt real gt UNIT CHAN INPPHAse Sets the RF Port Input Phase Offset Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 360 0 to 360 0 O 0 1
87. MIMO Sub Channels This command is available only in MIMO mode 2x2 4x4 Parameter Range Selection RST Resolution 1 to 4 unit 1 1 lt Sink Index gt 1 to 2 2x2 MIMO 1 1 1 to 4 4x4 MIMO lt Source Index gt 1 to 2 2x2 MIMO 1 1 1 to 4 4x4 MIMO lt real gt 30 to 30 dB O 0 01 UNIT MIMO STATe lt Sink Index gt lt Source Index gt lt bool gt UNIT MIMO STATe lt Sink Index gt lt Source Index gt Set the State of the MIMO Sub Channels This command is available only in MIMO mode 2x2 4x4 f Saee SPIRENT mme NLMICALIONS CHAPTER SIX COMMAND REFERENCE 189 Parameter RST Resolution lt Sink Index gt 1to2 MA sno 1 to 4 4x4 MIMO lt Source Index gt 1 to 2 2x2 MIMO 1 to 4 4x4 MIMO lt bool gt UNIT NUMCHannels Query the number of channels in the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 UNIT RELPower lt real gt UNLIT RELPower Set the Relative Power between channels in the given unit This command is available in TX Diversity mode only Parameter Range Selection RST Resolution 1 to 4 unit 1 1 lt real gt 30 to 30 dB O 0 1 UNIT ROSCillator Query the state of the reference oscillator in the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1
88. NAL POWER FREQUENC f la f i LA Figure 3 12 Theoretical Power Spectral Density for Rician Fading TRACE A Chi Spectrum 30 dEr Log ag 130 dEr Center 660 MHz Span 1 5 KHZ Figure 3 13 Measured Rician Fading Power Spectral Density e Doppler Freq 200 Hz K O dB e Center Freq 880 MHz e Span 1 5 kHz 4 a SPIRENT sr LOT aCe CS 118 SR5500 USER MANUAL 3 6 3 Rayleigh fading and Rician fast fading describe the amplitude distribution of the faded signal However several different frequency domain models can be used to represent the power spectrum shape produced by multi path fading Fast Fading Power Spectrum Shapes The SR5500 allows you to select the shape of the power spectrum produced by multi path fading The four possible spectrum shapes that can be set are shown in Figure 3 14 The first shape Classical 6 dB is the most commonly used model and adheres to the spectral requirements detailed in many mobile communications standards for Rayleigh fading conditions The Flat spectrum shape has been determined to be representative of the multi path propagation effects experienced in some indoor applications The Classical 3 dB Rounded and Rounded 12 dB spectrum shapes are also available in the SR5500 6dB lt P Le ee Classical 6 dB Flat o ES N j EA r i r b 12 dB Ss va 3 dB t Es Classical 3 dB Rounded Rounded 12 dB Figure 3 14 Fading
89. NT PATH1 DELay 10 In the second example the fact that VALue is being referenced is implied The same holds true for queries 5 4 3 Program Messages A SR5500 TestKit Program Message consists of one or more Program Message Units which can be Command Message Units commands or Query Message Units queries IEEE 488 2 dictates that a semicolon separates different Program Message Units sent together in a Program Message A colon indicates that the program mnemonic for the message being sent starts at the root of the tree It is possible to send multiple Program Message Units in a single Program Message as long as they are separated by a semicolon Only one query should be present in the message sending two queries at once causes one response to be lost You can also send each command or query separately The first Program Message Unit within a Program Message does need to start with a colon since it is assumed that the command starts at the root of the command tree Subsequent Program Message Units are assumed to reside under the same header as the preceding command if the next command is not preceded by a colon The following example shows sending two commands under the same header CHAN1 PATH1 DELay 10 MODE FIXed This is equivalent to sending two commands separately CHAN1 PATH1 DELay 10 CHAN1 PATH1 MODE FIXed SR5500 Testkit ignores extra white space within the command frame and characters are not case sensitive
90. Path A This occurs since some amount of the power in signal Path C is lost when it reflects off the truck Signal strength also varies due to the distance the signal travels The loss of signal strength should follow the 1 d2 law in free space where d is the distance between the transmitter and the receiver In the actual cellular environment the loss is much worse between 1 d to 1 d due mainly to variations in the terrain Transmitter Figure 3 6 Transmitter to Receiver Signal Diagram 3 6 Fast Fading Fast fading is generated by local scattering of the individual paths in the Power Delay Profile in close proximity to the receiver This scattering creates a large number of reflected signal transmissions that arrive at the receiver at relatively the same time with respect to the inverse of receive signal bandwidth with random phase and amplitude caused by the difference in distance traveled Several different mathematical distributions are commonly used to model the amplitude and phase characteristics of the fast fading phenomena These include the Rayleigh and Rician fast fading amplitude distributions 7 SPIRENT inspires innovation Communications CHAPTER THREE TECHNICAL REFERENCE 113 3 6 1 Rayleigh Fading Amplitude Distribution Fast fading is commonly referred to as Rayleigh fading A Rayleigh modulated signal is caused by scattering of the paths in the Power Delay Profile from man made and natural o
91. Power Spectrum Shape 3 7 Static Amplitude Channel Effects en SPIRENT mmumcations In some cases it is desirable to emulate single reflected paths that do not undergo local multi path scattering and thus have static or constant amplitude While these paths have fixed amplitude versus time they may be subjected to constant or time varying phase modulation These phase modulation effects are described in the following sections nspired Innovation CHAPTER THREE TECHNICAL REFERENCE 119 3 7 1 Frequency Shift Static Doppler Static frequency shift from the carrier frequency occurs when the distance between the receiver and transmitter is changing An example of this is when a mobile receiver car is driving away from the transmitter Path A in Figure 3 6 has a static frequency shift due to the movement of the car The amount of the frequency shift Doppler frequency from the carrier is determined by the following formula F Velocity mobile x Fr eq carrier req Doppler C where C Speed of Light 3 x 108 m s The Doppler frequency caused by dynamic rotation of the path phase can be either positive or negative depending whether the mobile receiver is moving away from or towards the transmitter respectively 3 7 2 High Speed Train Frequency Shift At the high speeds both the Doppler shift and the rate of change of Doppler shift are very large making it very difficult to maintain a mobile connection Since on
92. Query Message Units queries are Program Message Units which ask SR5500 TestKit to report back a response of some kind usually a parameter value Queries have a question mark after the command name like so CHAN1 PATH1 DELay VALue A possible response for this query might be 10 0000 f Communications CHAPTER FIVE REMOTE PROGRAMMING INTERFACE OPERATION 145 5 4 4 Response Format IEEE 488 2 Command Message Units commands do not generate responses IEEE 488 2 compliant units only generate responses to Query Message Units queries SR5500 TestKit requires you to request the response The SR5500 Testkit response format is a headerless format The Headerless format skips the command header and simply sends the value being requested The following is an example of a Headerless response from SR5500 Testkit Send query CHAN1 PATH1 DELay Receive response 10 000 5 4 5 Long Form and Short Form of Mnemonics Every mnemonic has both a long form and short form You can use either of these forms when sending commands and queries Typically the short form of the mnemonic is shown in capital letters with the long form being a combination of the short form plus any lower case letters IEEE 488 2 dictates that Program Messages can be sent in capital letters lower case letters or any combination of the two An example of the command long and short form is as follows CHAN PATH1 DELay 10 0 The mnemonic
93. R5500 2 Turn Path 1 OFF This path was originally turned on in the Channel Editor table Static mode eN SPIRENT inspired inavation Communications CHAPTER TWO OPERATION REFERENCE 83 In States 7 9 1 Modify the output power of the SR5500 2 Path 1 remains OFF In State 10 1 Modify the output power of the SR5500 2 Turn Channel 1 Path 1 ON 3 Change the delay of Channel 1 Path 1 to 3 4 us In States 11 21 1 Modify the output power of the SR5500 As can be seen from the example in Figure 2 96 only changes to the current state are required If desired you can enter data when the information has not changed but it is not necessary Microsoft Cocal dia t miplataT TS Ge gat Den peet omat Tois Daa Window Help ae Be MENS IRE NERO A E N hae A ae EEN RFA AWGH RF AWGH CHI P1 Satis States Status CHA Fi mmea en om AFA Gutput RF Output Relative CHI Pi Slate Power Power 0 OFF D DEF RF1 CIN RE CIN i OFF CHA P1 Paih Loss LOS ADA CHI 1 Comment Tite Stang matini f s den dBm 1 OH 1 0H Ratio d Hatia iH 1 Oi Chel us HH CCEA Faci Ban State 1 O0 00 00 01 010 60 DO 60 00 o SO 10o 0 10 3 State 2 0000 00 02 59 9 50 00 a0 70 State J 00 00 000 55 50 55 60 5 0 30 5 Stated O0 00 00 08 59 50 55 30 ro 4 0 G State 00 00 0005 55 70 59 6 0 5 0 State 6 0000 0005 53 70 5 5 6 0 0000 0007 55 80 E5 oh T G 00 000 55 50 Boo 53 50 00 00 00 1 59 40 0
94. RENT catons 2 Export the State Changes to an STB file using the Export function in the template The STB file is a text based file which the GUI can read This file describes all of the state changes to the GUI 3 Using the DEE view Refer to page 85 in the main GUI a Load the Emulation STB file b Enable DEE c Play the Emulation file nspired Innovation CHAPTER TWO OPERATION REFERENCE 81 2 8 2 Emulation File Creation DEE Template The DEE Template defines the changes to the state of the SR5500 To use the template macros must be enabled in Microsoft Excel NOTE Previous versions of TestKit used a file format called SSX This was a proprietary XML based format This format was discontinued with the 2 10 release of TestKit due to inefficient large file sizes TestKit still accepts previously created SSX files but the DEE template no longer creates them A new text based format known as an STB file has replaced the SSX file 2 8 2 1 Accessing the DEE Template The Emulation File Template is found in the root directory of the TestKit Installation This is usually C Program Files Spirent Communications SR5500 TestKit You can also access it by clicking the New Emulation File button in the DEE view Emulation File Open Emulation File C Mvek 55001GUNDEE State Files R2 3 R2 3_Dual_2 States stb Trigger Mode Playback Mode e Free Run New Emulation File Triggered Play G Enable Fig
95. REQuency lt real gt FREQuency INPPHASe lt real gt INPPHASe INPut lt real gt ENBUE INTerferer BITRate lt real gt INTerferer INTerferer INTerferer INTerferer INTerferer INTerferer INTerferer INTerferer INTerferer INTerferer INTerferer INTerferer BITRate CTON lt real gt CTON CTONO lt real gt CTONO EBNO lt real gt EBNO MODe OFF AWGN MODe NBWidth lt real gt NBWidth RBWidth lt real gt _ SPIRENT inspires innovation Communications 156 SR5500 USER MANUAL SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe n SPIRENT inspired inavation Communications UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT CHAN F CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN
96. SC Of Failure icasicsscnscascausonsacetuvosuwanaesncesevss sencecstacuessemasaneaens 93 2 11 Changing the Remote Connection ss 93 2 11 1 Changing the SR5500 IP Address Configuration cccsscccosescceseceenesees 93 2 11 2 Changing the IP Address in SR5500 TestKit 95 2 12 Updating the SR5500 Options rss 95 2 13 Controlling Multiple SR5500 Units 97 2 13 1 Connecting Synchronization Cables ss 97 EE e S P R E NT nspired innovation Communications TABLE OF CONTENTS III 21 2 Unidirectional 2x4 MIMO a bn ee a EESE 98 2 13 3 Bidirectional 4x4 MIMO icccessincensisacsosssonnienscshivednsndaapeessaanseqwessawsenvnisstaaee 98 2 13 4 Configuring TestKit to Control Multiple Units cccsssecccssscccensscceneees 99 2135 OWC DCW CCH UNIS ne einen ae sean da dance en en tie 101 D en LE LCA A FUC TONG DER A A E EE N ENA 102 2 139 7 Correlation COCSICIONL IV De weacicesaasvessesescousannancenssveseueveueussescoatsensaneecoxs 102 2 13 8 System Based Correlation ss 103 TECHNICAL RETRO en esse 107 Dad OVOIVIO an a de aa ie 107 3 2 Radio Channel Power Delay Profile se 108 3 3 Static Relative Path Delay ccccccscecssincsoxneicsanaswanesevasatasdonesveasassebesesaiccees 109 3 4 Time Varying Relative Path Delay ss 109 2410 Sliding Relauve Path Delay socnacecscancsssowtetaaessoeeeeteeisesamtcasesesdaesseecesseiecnor 110 3 4 2 Birth Death Time varying Relative Path Delay 111 Bed
97. SR5500 Wireless Channel Emulator User Manual ee SPIRENT Communications Safety Summary If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Safety Symbols The following safety symbols are used throughout this manual and may be found on the instrument Familiarize yourself with each symbol and its meaning before operating this instrument A Instruction manual symbol The product is marked with this symbol when it is necessary for you to refer to the instruction manual to protect against damage to the instrument Protective ground earth terminal Used to identify any terminal which is intended for connection to an external protective conductor for protection against electrical shock in case of a fault or to the terminal of a protective ground earth electrode Indicates dangerous voltage terminals fed from the interior by voltage exceeding 1000 volts must be so marked _ SPIRENT spires innovation Communications rh Caution DT Frame terminal connection to the frame chassis of the equipment which normally includes all exposed metal structures The caution sign denotes a hazard It calls attention to an operating procedure practice condition or the like which if not correctly performed or adhered to could result in damage to or destruction of part or all of the product or your data Alternating current po
98. SSSSSSSoSSsssssesscssssssssssssssessssssssesss LLLLELRLLLELELELELLLELLLLLLLELLELALLELRLLLELLLEL sececeeseccceseocesoecoceseceseceessesees Figure 1 1 SR5500 Wireless Channel Emulator ene eee ee Be ELLE LL LIL ELLE LERLELELIIENLELLIELLRS l ISPS CCC ECC EC jE AMAR LUE Figure 1 2 SRSSO0M Wireless Channel Emulator 8 SR5500 USER MANUAL Complete analysis of today s complex radio transmission schemes requires a channel simulator that offers rich emulation of radio channel characteristics This is required to ensure that lab and field performance measurements align At the same time the instrument implementation must contribute minimal unwanted parasitic simulation effects that can distort test results The SR5500 high performance all digital signal processing engine presents a realistic set of radio channel conditions to the most complex radio transmission technologies The use of the SR5500 DEE Dynamic Environment Emulation further replicates real world fading scenarios by allowing dynamic control over fading parameters With high fidelity channel and long simulation repetition rates the SR5500 ensures reliable and accurate performance evaluation The SR5500 Graphical User Interface GUI shown in Figure 1 3 enables you to select channel models from a vast library of pre defined industry standard channel models or custom configurations that provide extreme precision using the Channel Model Editor Once the channel mode
99. ST LOGNormal LOGNormal LOGNormal LOGNormal LOGNormal STATe E FIXed HST E INIDs lt real gt INIDs DMIN lt real gt DMIN VELocity lt real gt VELocity MAXDoppler lt real gt MAXDoppler PERiod RATe lt real gt RATe SDEViation lt i t gt SDEViation OFF ON LOGNormal STATe LOS LOS LOS LOS LOS LOS AOA lt real gt AOA DOPPLer lt real gt DOPPler KRICian lt real gt KRICian MODulation NONE RAYLeigh RICian MODulation PHSHift lt real gt PHSHift RPLoss lt real gt RPLOSS O PATH STATe CONFiguration FF ON SINGle DUAL RXDiversity TXDiversity MIMO MIMO4x4 SUITe UNIT CONF SUITe UNIT EMULation PAUSe _ SPIRENT inspires innovation Communications 158 SR5500 USER MANUAL SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe a SPIRENT inspired innovation Communications UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT EMULation PLAY EMULation STOP EMULation STATe gt MIMO PHSHift lt Sink Index gt lt Source Index gt lt real gt MIMO PHSHift lt Sink Index gt lt Source Index gt gt MIMO RELPower lt Sink Index gt lt Source Index gt lt r
100. TECHNICAL REFERENCE 115 To evaluate the performance of Rayleigh fading implemented in the SR5500 it must be compared to a defined standard metric to ensure consistent operation One set of performance criteria can be found in industry standard test documents The primary performance criteria that are used to evaluate Rayleigh fading are the Cumulative Probability Distribution Function CPDF and the Level Crossing Rate LCR Representative fast fading specifications state that an un modulated carrier with Rayleigh fading should meet the following performance The measured Rayleigh CPDF should match the calculated CPDF using the following criterion 1 The measured CPDF of power shall be within 1 dB of the calculated CPDF from 10 dB above the mean power to 20 dB below the mean power 2 The measured CPDF of power shall be within 5 dB of the calculated CPDF from 20 dB to 30 dB below the mean power 3 The measured LCR should match the calculated LCR and not deviate more than 10 of the simulated vehicle speed over a range of 3 dB above the mean power level to 30 dB below the mean power level The theoretical and measured CPDF are shown in Figure 3 10 This plot is the probability of a signal level being less then the mean level The LCR plots shown in Figure 3 11 are the number of crossings per second versus the signal power In both of these plots the signal power is relative to the mean The CPDF and LCR were taken with an 80 Hz
101. Time e Log Normal Standard Deviation 10 dB e Log Normal Rate 10 Hz e Path Loss 25 dB e Center Freq 900 MHz e Span 0 Hz e RBW 100 kHz e Sweep Time 2 sec ei SPIRENT inspires innovation Communications 122 SR5500 USER MANUAL SPIR TRANSMITTER Figure 3 17 Transmitter to Receiver Log Normal Diagram This fading has statistical characteristics that are represented by a log normal distribution of fluctuations in the mean average signal power expressed in decibels dB The standard deviation of the log normal distribution is determined by the characteristics of the terrain where the transmitter and receiver are located For example a standard deviation of between 6 8 dB is typical for urban areas while a deviation of 10 12 dB can be observed in rural locations The maximum rate of the log normal fading must also be specified The rate of log normal fading is the maximum frequency of the fading spectrum and defines the maximum pace that the mobile will move through the shadow of elements in the terrain An example can be given of a mobile receiver car driving at a fixed speed along a road If the car is in a rural area behind hills far apart the log normal rate would be small since the car is moving through shadows at a slow rate If the car is in an urban area behind rows of buildings the rate would be larger since the mobile would be passing through shadows at a higher rate The following relations
102. _U1h11_Imag R2 uanazuanaiReai R8 unzumaires R3 U1h12_U1h11_Imag R9 U1h22_U1h21_Imag R5 U1h12_U1h21_ Imag R11 U1h22_U1h12_Imag 4x4 MIMO Mode Index Parameter Index Parameter Index Parameter RO h21_h11_Real R80 h23_h12_Real R160 h24_h31_Real R1 h21_h11_Imag R81 h23_h12_Imag R161 h24_h31_Imag R2 h31_h11_Real R82 h23_h22_Real R162 h24 h41_ Real R3 h31_h11_Imag R83 h23_h22_Imag R163 h24_h41_Imag R4 h31_h21_Real R84 h23_h32_Real R164 h24_h12_ Real R5 h31_h21_Imag R85 h23_h32_Imag R165 h24_h12_ Imag R6 h41_h11_Real R86 h23_h42_Real R166 h24_h22 Real R7 h41_h11_lmag R87 h23_h42_lmag R167 h24_h22_lmag R8 h41_h21_Real R88 h23_h13_Real R168 h24_h32_Real R9 h41_h21_Imag R89 h23_h13_Imag R169 h24_h32_Imag R10 h41_h31_Real R90 h33_h11_Real R170 h24_h42_Real R11 h41_h31_Imag R91 h33_h11_Imag R171 h24_h42_Imag R12 h12_h11_Real R92 h33_h21_Real R172 h24 h13_Real R13 h12_h11_Imag R93 h33_h21_Imag R173 h24_h13_Imag R14 h12_h21_Real R94 h33_h31_Real R174 h24_h23_Real R15 h12_h21_lmag R95 h33_h31_lmag R175 h24_h23_lmag R16 h12_h31_Real R96 h33_h41_Real R176 h24_h33_Real R17 h12_h31_lmag R97 h33_h41_lmag R177 h24_h33_lmag R18 h12_h41_Real R98 h33_h12_Real R178 h24_h43_Real R19 h12_h41_Imag R99 h33_h12_Imag R179 h24_h43_Imag R20 h22_h11_Real R100 h33_h22_Real R180 h24_h14_Real R21 h22_h11_Imag R101 h33_h22_Imag R181
103. a constant random distance between the transmitter and receiver This distance is very rarely going to be an integer number of carrier wavelengths a non integer value will result in a static phase shift on the signal path The amount of phase shift can vary between O and 360 degrees E NT Inspired Innovation immm ators CHAPTER THREE TECHNICAL REFERENCE 121 3 8 Slow Shadow Fading Slow or Shadow fading is the slow variation of the average signal power over time A plot of signal power versus time for Shadow fading is shown in Figure 3 16 Shadow fading is often characterized by a log normal amplitude distribution The time scale is much larger than that for Rayleigh fading as shown in Figure 3 9 The variation in signal strength at the receiver is due to blockage or absorption of the signal by large scale variations in the terrain profile and by changes in the nature of the local topography in the path from the transmitter to the receiver The blockage of the signal is caused by elements in the environment such as hills or a building This phenomenon is often called shadowing since the receiver is passing through a large shadow of an object An example of this is shown in Figure 3 17 as the mobile receiver car passes in the shadow of the building the signal strength would fade 40 00 50 00 SIGNAL ROWER cB 60 00 70 00 TIME 2 sec sweep Figure 3 16 Log Normal Fading vs
104. a fading profile that does not match the Technology and Unit Under Test settings on the left This flexibility allows you to apply any industry standard to the testing application Select a fading profile to view a textual summary A textual summary displays in the textbox at the bottom of the window When you have made your final selections click OK to apply your selections and close the Test Assistant window If you want to cancel your selections click Cancel to close the window 2 4 4 Completing the Configuration Although Test Assistant does most of the work we recommend you set the output power and perform an Autoset The SR5500 may not be properly configured for testing without completing these additional steps For details on performing an Autoset and setting the output power refer to Sections 2 6 1 4 and 2 6 1 5 on page 46 NOTE Selecting a Test Assistant configuration disables any Additive Impairments If desired the Additive Impairment can be enabled in the View window 4 d SPIRENT sr LOT aCe LIENS 40 SR5500 USER MANUAL 2 5 Channel Player The Channel Player is a key feature of TestKit This feature presents a graphical representation of the fading profile as it changes To access the Channel Player click the Channel Player button from the Views Panel In non MIMO modes SR5500 TestKit displays a Channel Player similar to the display shown in Figure 2 21 NOTE This feature is not acc
105. alue You can save this Log to a file for future review io SPIRENT series immoiton Communications 138 SR5500 USER MANUAL Coupled Parameter Clear Save Doppler Velocity was changed 9 7 55 40 PM Fading Doppler Frequency changed Doppler Frequency of Path 6 in channel 0 changed to 46 9 because the Doppler Velocity was changed 10 1 55 40 PM Fading Doppler Frequency changed Doppler Frequency of Path 9 in channel 0 changed to 48 9 because the Doppler Velocity was changed 17 1 55 40 PM Fading Doppler Frequency changed Doppler Frequency of Path 10 in channel 0 changed to 48 9 because the Doppler Velocity was changed q2 1 55 40 PM Fading Doppler Frequency changed Doppler Frequency of Path 17 in channel 0 changed to 46 9 because the Doppler Velocity was changed 13 7 59 02 PM Cel changed Cel of Channel 0 changed to 0 1 because either the Output Level Recenver Bandwidth or the Interfere Bandwidth of the channel changed 14 Figure 4 7 Coupled Parameter Window 4 6 Further Information Additional information about the SR5500 WCE IAPI can be found in the following electronic documents provided with the API e The API Installation Instructions e The API Getting Started Instructions e The Spirent WCE IAPI Help file This provides an extensive breakdown of the resources of the API along with links to additional information Extensive information on NET as an initiative as
106. aml dir fat RF Output Ht CHI na CINA RF Output am efi afa MI c2 Ai 0 ni T eos M RET sy cre EE RF2 co S Channel Moder dxd MIMC RE Berd Lower Techeclogy Hore Uri Wieder Test Vernon Urmi Feeding Drcorelssed Status Moi Connie Figure 2 83 TestKit System Setup View 4x4 MIMO Mode The system setup view provides other useful functions including a block diagram of the current system setup useful in the RX and TX Diversity modes Additionally the Advanced Options button is available in MIMO mode 2x2 and 4x4 This allows you to set advanced MIMO options When the MIMO options are not set to the default values the LED to the left of the Advanced Options button turns on It also allows you to enter the relative power of the carriers and noise inputs in a number of different ways shown in following list Mode 1 The native mode of the SR5500 SPIRENT inspired innovation Communications 74 SR5500 USER MANUAL C Output Power Total carrier power at the output of the SR5500 In the case of TX Diversity mode this is the sum of the power from Carrier 1 and Carrier 2 C1 C2 In RX Diversity mode the ratio of the Carrier 1 power to Carrier 2 power C N The ratio of the total Carrier power to the Noise power Mode 2 Allows quick translation of C N ratios from specifications where the Noise power is given and the Carrier power is derived from a ratio N Total noise power within the r
107. ample Status Bar Refer to appropriate sections for more details on the above settings The status bar also has an area to the right to indicate progress for actions that take more than a few seconds i SPIRENT inspires innovation Communications CHAPTER TWO OPERATION REFERENCE 35 2 3 Channel Modes The SR5500 has four distinct channel modes that simulate different propagation effects Set the channel mode in the System Configuration window as described in Section 2 1 1 on page 43 2 3 1 Single Channel Mode Fading W i y vi Ch1 Input Ch1 Output Figure 2 12 Single Channel Mode Setting the Channel Configuration to Single provides a single Channel with 24 Paths The other channel is automatically bypassed using the RF Bypass feature 2 3 2 Dual Channel Mode Fading Correlation Coefficient Wy yi n C2 Fading Chi Input Ch1 Output Ch2 Input Ch2 Output Figure 2 13 Dual Channel Mode Setting the Channel Configuration to Dual provides two channels each having 12 Paths 4 S P RE JT inspired innovation Communications 36 SR5500 USER MANUAL 2 3 3 RX Diversity Mode Fading Ch1 Input wy Chi Output Correlation Coefficient Wyn _ Ch2 Output Fading Figure 2 14 RX Diversity Channel Mode Setting the Channel Configuration to RX Diversity provides two channels each having 12 Paths The input to RF port 1 is split out and distrib
108. and then the C I ratio f SPI RE NT nspired Innovation mmumcations CHAPTER SIX COMMAND REFERENCE 191 Output Level RF alae Offset Log Normal Crest Factor Mo alae et Receiver Channel Ke Channel Bandwidth Output Level Ke Input Level Interferer Bandwidth Fading Doppler Velocity Path Fading Delay Channel Path Modulation Doppler Oscillation Mode Enabled Type Frequency Amplitude AWGN Channel Correlation Correlation Figure 6 2 SR5500 Parameter Dependency Tree Interferer Mode C I 6 4 Autoset To perform an Autoset send the following commands UNIT CHAN BAUToset Begins the Autoset UNIT CHAN ASTatus Checks the Status of the Autoset This command should be repeated until Complete or an error is returned New commands cannot be sent to the system until the Autoset is complete SPIRENT sccrred ovation Communications 192 SR5500 USER MANUAL 6 5 Overload Status TestKit stores the overload status of each channel so that instantaneous overloads can be detected by the software To query the overload status UNIT CHAN OVERload To clear the overload register UNIT CHAN CLROVerload NOTE Performing an Autoset automatically clears the overload register 6 6 Dynamic Environment Emulation DEE To use the Dynamic environment emulation feature using the RPI commands must be sent in a very specific order Manually
109. annel 12 Crest Factor Channel 1 1150 dB Channel 2 15 0 dB Ethernet Setting Enter the IP Address of the remote unit 10 16 160 126 Query Change the IP address of the remote unit IP Configuration Figure 2 106 System Configuration Window Changing IP Address 4 Click the IP Configuration button SR5500 TestKit uses the COM port to communicate with the SR5500 and retrieve the current IP Address information 5 If TestKit is controlling multiple SR5500s connect the serial cable to each of them in series The IP configuration is only for the system currently connected to the serial cable If TestKit can not communicate with the SR5500 it will display the appropriate error 6 After collecting the IP Address information from the SR5500 SR5500 Testkit displays the current IP Address information Adjust the IP Address information to the desired value 7 Click OK Your changes are updated in the SR5500 unit After SR5500 TestKit has updated the IP Address in the unit it automatically updates the IP Address it uses to communicate with the SR5500 It is not necessary to change the IP Address in SR5500 Testhit to match the updated SR5500 IP Address 4 SPIRENT mon OTT Ca ors CHAPTER TWO OPERATION REFERENCE 95 2 12 2 11 2 Changing the IP Address in SR5500 TestKit You need to know the IP address of the unit before changing the IP Address to match the IP Address of the SR5500 SR5500 TestKit must be
110. ast fading since the fluctuations are so rapid as compared to log normal or slow fading SIGANL POWER dBm 60 00 Figure 3 7 Rayleigh Faded Signal vs Time e Doppler Freq 100 Hz e Center Freq 900 MHz e Span 0 Hz e RBW 100 kHz e Sweep Time 75 msec SPIRENT mi munications a 114 SR5500 USER MANUAL The Rayleigh distribution is generated using a complex I Q modulator The I Q signals are modulated with two Gaussian distributed signals Since Rayleigh fading occurs when there is relative movement between the transmitter and receiver the signal is subjected to a Doppler shift frequency shift As a result the spectrum of Rayleigh fading is limited to plus or minus the Doppler frequency which is a function of the vehicle velocity assuming that there is an equal probability that the signal is received with an arrival angle anywhere within the range from O to 360 degrees The theoretical power spectral density of a Rayleigh faded signal is shown in Figure 3 8 Also shown in Figure 3 9 is the measured power spectral density from a SR5500 SIGNAL POWER FREQUENCY t f f E 1 4 Figure 3 8 Theoretical Rayleigh Power Spectral Density TRACE A Chi Spectrum 30 dEr LogMcg Center 660 MHz Span 1 5 KHz Figure 3 9 Measured Rayleigh Power Spectral Density e Doppler Freq 200 Hz e Center Freq 880 MHz e Span 1 5 kHz n SPIRENT rs Communications CHAPTER THREE
111. asured value in the Textbox and click Next gt to proceed to the next step Unit 1 2 Phase Calibration Wizard ze SS BZN Congratulations You have succesfully completed the calibration The Phase of the system is now calibrated for this cable set Click Close to exit the Wizard Figure 2 60 Unit 1 2 Phase Calibration Wizard Confirmation 4x4 MIMO Mode EE n SPIRENT inspired innovation Communications CHAPTER TWO OPERATION REFERENCE 61 2 7 2 Path Parameters To use the Channel Editor view to edit the Path Parameters click the Channel Editor button on the left to show the Path Parameters SR5500 TestKit displays the Channel Editor in the View Area as shown in Figure 2 61 F Channel 1 2 Velocity km h 50 000 Mindulation Fodin oi Le peewee Phose Shell Shll Fr quence Shift Hz Os m Dmin en HGT Veci fa Hz gr kmh Deg Kenh C Te i eT lt 20 000 Ren re ba F Channel 2 sag f2o 7 200 CCS RS RE RE ME D High Speed Train prsa 1150 00 300 0 2 0 300 00 10 00 7200 57 55 50 000 0 0 Fined 0 00 97 86 50 000 loo Fed 0 00 oo Es Lo LT LT CT bo ET 07 86 50 000 loo Fixed 0 00 Figure 2 61 Path Parameters Window The Technical Reference chapter on page 107 contains details on constructing a fading profile NOTE In MIMO mode 2x2 and 4x4 when a change is made to a path parameter this chan
112. ation MODe is set to COMPLex This command is not supported for a suite with 2 units in 4x4 MIMO mode The parameters are defined in the following tables Parameter Range Selection RST Resolution 1 to 24 path lt real list gt 2 UNITS Dual RO R1 R2 R11 0 00 0 0001 3 UNITS Dual RO R1 R2 R29 4 UNITS Dual RO R1 R2 R55 2 UNITS Single RO R1 3 UNITS Single RO R1 R2 R5 4 UNITS Single RO R1 R2 R11 2 UNITS MIMO RO R1 R2 R55 3 UNITS MIMO RO R1 R2 R131 4 UNITS MIMO RO R1 R2 R239 1 to 1 2 UNITS Dual Channel Complex Correlation Index Parameter Index Parameter 0 U1C1 U1C2 Real R6 U1C1 U2C2 Real U1C1_U1C2_Imag CRT U1C1 U2C2_Imag CEN U1C1 U2C1 Real R8 O U1C2 U2C2_ Real LC U1C1_U2C1_Imag R9 o U1C2_U2C2_Imag U1C2_U2C1 Real U2C1_U2C2 Real Se SPIRENT ses innovation catons CHAPTER SIX COMMAND REFERENCE 163 R5 U1C2_U2C1_lmag R11 U2C1_U2C2_Imag 3 UNITS Dual Channel Complex Correlation Index Parameter Index Parameter Index Parameter Lm U1C1 U1C2 Real R10 U2C1 U2C2 Real R20 U1C1 U3C2 Real U1C1_U1C2_Imag U2C1_U2C2_Imag U1C1_U3C2_Imag U1C1 U2C1 Real U1C1 U3C1 Real U1C2 U3C2 Real R3 U1C1_U2C1_Imag ras U1C1_U3C1_Imag Fes U1C2_U3C2_Imag U1C2_U2C1 Real U1C2_U3C1 Real U2C1 U3C2 Real U1C2_U2C1_Imag R15 U1C2_U3C1_Imag R25 U
113. bstacles such as buildings and trees in the local geographical area within a few hundred wavelengths of the receiver It is formed by a large number of these scattered reflected signals combining at the receiver Each of these signals has a random phase and amplitude at the receiver due to the reflections and difference in distance traveled The phenomenon that creates Rayleigh fading can be easily illustrated using a simple two path example At the receiver the two paths can be of any amplitude and phase If the two paths are of the same amplitude and their phase is 180 apart there will be total destructive interference and no resultant signal If the two signal paths are O apart in phase there will be constructive interference and the signal envelope will be 3 dB larger than the individual path s amplitudes The signals rarely combine to greater than 10 dB above the individual path s power The deep fades destructive interference would range from just a few dB to fades of greater than 50 dB The spacing and amplitude of the fades are a function of the carrier frequency At 900 MHz the deep fades will occur at the mobile every few centimeters apart The fades and peaks of the signal envelope follow a Rayleigh distribution This causes the signal strength to fluctuate rapidly between slightly higher levels to deep fades of greater than 50 dB Figure 3 7 shows an example of the Rayleigh faded signal versus time Rayleigh fading is called f
114. ccsceesees 207 7 8 2 SR550O Power Requirements rss 208 7 8 3 6GHZ EX Option Power Requirements ss 208 7204 Operando EVI ONMOMESE SE nous nid E ot ue 208 7 8 5 SR5500 Dimensions and Weight 208 7 8 6 6 GHZ Option Dimensions and Weight 209 26 7 SIGS OO ONO IMAC ns ea does caca ee ee nues 209 7 8 8 10 MHz Reference Requirements rss 209 es S P R E NT inspired Innovation Communications i be Introduction 1 1 Overview The Spirent SR5500 Wireless Channel Emulator accurately emulates complex wideband wireless channel characteristics such as time varying multi path delay spread fading and channel loss By providing a programmable and repeatable set of emulated radio channel conditions the SR5500 enables a thorough structured approach to receiver performance characterization There are two versions of the SR5500 hardware the SR5500 and the SR5500M The different versions are shown in Figure 1 2 and Figure 1 2 respectively Other versions are described as SR5500 throughout the remainder of this manual except where necessary The SR5500 replicates real world deployment conditions using powerful digital signal processing techniques making it possible to isolate performance issues early in the development and design verification cycle Optional AWGN enhances the real world conditions emulated by the SR5500 Early optimization of performance accelerates time to market and minimizes post deployment issues SS
115. ccsssccnsscenscccecccsscccescesess 200 7 5 Channel Emulation Characteristics ccsccsscssccsscsscsccssceeceseceecs 201 7 5 1 Number of Paths per Channel svesavescrcssaccssreniasecosaaeereevacenerateadersseieeosaceas 201 75 2 POUT GNGIO CCS CS 2e E EEEE EEE 201 754 FPCOUCHCYV O10 Il o E nice nc 201 PE dE AL CNRS A LR US 202 70 5 Path Loss CharaclerisliCS ee ee se ee 202 75 0 Path Delay CHOlACICHISUCS ssssesscisveniesaswatexccuaenesactacnactssaweserecxstonsscanienesss 202 757 Path Fading Characteristics ssecaccecosvonaacaseccousansssvareieckassoaseceessneseenebiansest 203 7 5 8 Fading Power Spectrum ss 203 7 5 9 Rician Fading Characteristics ss 204 7 5 10 Log Normal Fading Characteristics ss 204 7 5 11 Dynamic Environment Emulation DEE 204 70 12 MIO AVC na dance E a 205 7 5 13 Path Rayleigh Fading Correlation ss 206 7 6 Interference Generation Characteristics scccscssceeccscceccsccecccees 206 7 6 1 Interference Characteristics cesserecveccedanenncbcsasnasceiegvatsesiovasrenacsesieeevecves 206 70 AWGN COI CGI OR aa sonne ee nn en ee 206 mm SPIRENT inspired innovation Communications VI SR5500 USER MANUAL Fe Os PAV GIN CUO ICO nn aie Den do ete ces en inde 206 7 7 Power Measurement Characteristics ss 207 7 8 Interface and Environmental Characteristics ccscssccssceeceseceecs 207 7 8 1 SR5500 Front Panel Indicators ceccceccoescceccceccescceccceccesccescce
116. configuration In case you do need to change the Remote Connection configuration use the instructions provided here to assist you It is important that the SR5500 IP Address and the IP Address in TestKit match to ensure proper communication 2 11 1 Changing the SR5500 IP Address Configuration The address of the SR5500 Ethernet connection is a standard IP Address To modify the IP Address of the Ethernet connection 1 Use the supplied RJ 45 Type connector to DB 9 Type connector serial cable The serial cable connects the controller PC serial interface to the SR5500 serial interface labeled SERIAL 2 Run SR5500 Testhit but do not connect to the remote unit 3 Select Configuration gt System Communications Setup The Communication Configuration window displays pe SPIRENT mi MM LACE ors 94 SR5500 USER MANUAL System Configuration Number of SR5500 units in the system Number of SR5500 instruments controlled by TestKit 4 Synchronizartion Mode Syncronize Play Pause Stop across units Active Play Pause Stop O j g Correlation Coefficient System based Correlation Coefficient type Envelope Instrument based Frequency Mode of the system RF Frequency Mode Lower Band 400MHz 2700MHz IP Address of this PC Select the IP fac ala PC from the list of found IP Addresses for this 10 16 1 5 v Unit 1 Unit 2 Unit3 Unit4 Channel Configuration Dual Paths Fading Ch
117. cvorcesseatcesreesseaces 192 6 6 Dynamic Environment Emulation DEE 192 7 Technical Specifications ccccssccssccsscccssccssccsssccssccssccsscoesscees 195 Fede OVENI oeren E EEA E E 195 7 2 RF Channel Specifications without the SR5500 6 GHz Option 195 Ta PUTS OnO LEVO ar A E E E E een cod 196 e S P R E NT nspired innovation Communications TABLE OF CONTENTS V 7222 OPUSA PCV El a ae EE ENES 196 72 CHONNOL CEST OO PE nn Da en oo ia de 196 7 24 Spurious Emission Levels SE nant scene sndaseuenseeancteduessananidecens 196 220 ROSE EVE a nanas sens ons Gaec non nc Dia ui nt 197 7220 NOISE FOON ocean eo ee na D et es ci ce 197 7 2 7 RF Physical Interface Characteristics se 197 7 3 RF Channel Specifications with the SR5500 6 GHz Option 198 7221 WADE SIGN EVER eee an den aan des Den ae a cet een 198 72 2 OPUS OOL LOVE eee eee en en ie ee en 198 2 33 Channel Crest POCIORS D ec de den ele ion 198 PFA SPUrIOUS EMISSION LOVE S een dt eee seen 199 7 3 5 RF Physical Interface Characteristics sccccesccsssccnescenscccseccenscccescesess 199 7 4 RF Channel Specifications with the SR5500 6 GHz EX Option 199 74 de WADE SIGN OVER ae en cons den ee die eee nee 199 7402 PUPU SONAL EEE des nee teen ne nn Die sa ai de ones 199 743 Channel Crest QCIOR ann ae ee 200 74 0 SDULIOUS EMISSION LOVE S rsin T 200 7 4 5 RF Physical Interface Characteristics sccccss
118. d Relative Delay in microseconds independently for each path use the Delay Value column SPIRENT inspired inavation Communications CHAPTER TWO OPERATION REFERENCE 67 2 7 2 11 Sliding Delay The SR5500 allows any number of paths to have Sliding Delay Set the Delay Mode to Sliding Delay then set the remaining Sliding Delay parameters using the grid directly or the Sliding Delay Parameters window shown in Figure 2 45 To display the Sliding Delay Parameters window place the mouse cursor in the appropriate row of the Delay Value column and click the More button Make the desired changes to the Sliding Delay parameters and click the Close button Channel 1 Path 1 Sliding Delay Parameters Moving Propagation Parameters Min Delay Value ANNEI us Rate of Oscillation 0 001 rad sec Max Delay Value 0 0000 us Period 6283 185 sec OK Cancel Figure 2 69 Sliding Delay Parameters Window The Rate of Oscillation Rate of Osc and Delay Period are dependent parameters Changing one causes the other to reset to the calculated value All the parameters presented in the Sliding Delay Parameters window also display in the grid Use the techniques described previously to edit these parameters in the grid 2 7 2 12 Birth Death Delay The SR5500 allows any number of paths to have Birth Death Delay To setup a path for Birth Death Delay use the Delay Mode column and select Birth Death Click the Birth Death Settings button to
119. d in a tree structure The top of this tree contains headers and IEEE 488 2 mandatory commands and queries Each header can have more headers and Program Messages commands and queries under it For a complete description of all headers and commands refer to Chapter 6 on page 153 As described above SR5500 TestKit command set is made up of IEEE 488 2 mandatory common commands as well as SR5500 specific commands These commands loosely adhere to the SCPI protocol This simplifies learning and using the command set if you are already familiar with other IEEE 488 2 instruments 140 SR5500 USER MANUAL 5 3 Configuring SR5500 TestKit for Remote Control To control the TestKit application remotely you must configure the Remote Programming Interface RPI 5 3 1 Setting up the Remote Programming Interface Before controlling the SR5500 Testhit from a remote terminal or computer open the TestKit application and connect to the SR5500 instrument This is described in Section 2 2 1 on page 28 After connecting to the instrument configure the Remote Programming Interface To configure the remote control configuration 1 Open the RPI Configuration Form located in the Configuration Menu RPI Setup RPI Communication Use TCPIIP Port for this Interface 33 C Use GPIB GPIB address for this Interface x ee Figure 5 1 RPI Setup Window 2 Select either TCP IP or GPIB and the desired Port or Address 3 Select the RPI Vi
120. ding with the Test Assistant configuration ensure the SR5500 Testhit is running and connected to the SR5500 6 Click the Test Assistant icon t located on the toolbar of SR5500 TestKit The Test Assistant window displays as shown in Figure 1 17 Test Assistant Unit 1 Unit 2 Unit 3 Unit 4 C Do not overwrite settings in the channel editor Technology GSM xl Use the following standard fading profile Selected Profile HT 2 100 km h 12 Path ee S rofile HT 2 100 km h 12 Path E RA 2 250 km h 4 Path Select Band and Channel Number E RA 1 130km h 6 Path EJ RA2 130km h 4 Path iw Band EGSMS00 7 C HT 1 100 km h 6 Path E HT 2 100 km h 6 Path E HT 1 100 km h 12 Path RF Channel Number 50 Mi E Equalization Test 6 Path F1 WiMAX 802 16 Hilly Terrain GSM or GSM DCS 100 km h Carner Frequency MHz Profile 2 12 Path model C Select Carrier Frequency Figure 1 17 Test Assistant Window T Set the following parameters Set Technology to GSM Set Unit Under Test to Mobile Set Band to E GSM900 Set Channel Number to 50 8 Select Use the following standard fading profile as shown in Figure 1 18 il 0 9 5 Do not overwrite settings in the channel editor Use the following standard fading profile Selected Profile HT 2 100 kmh 12 Path a CE RA 2 250 km h 4 Path FT RA 1 130 kmh 6 Path Figure 1 18 Test Assistant Window Profile Selection O
121. e ponr ve RE NT nspired Innovation THUR CAaC ons CHAPTER TWO OPERATION REFERENCE 99 ume port ume Jon ve DBB OUT DBB IN1 MDR Digital Cable DBB OUT DBB IN1 MDR Digital Cable DIGITAL MDR DATA SR5 500M UNIT 1 DIGITAL MDR DATA DIGITAL MDR SYNC DIGITAL MDR DATA SR5 500M UNIT 3 DIGITAL MDR DATA DIGITAL MDR SYNC Figure 2 110 Bidirectional 4x4 MIMO Setup 2 13 4 Configuring TestKit to Control Multiple Units Select the number of SR5500 units to control in the System Configuration window To access this window select Configuration gt System Communication Setup or click the System Communication Setup icon a from the toolbar ei SPIRENT inspires innovation Communications 100 SR5500 USER MANUAL System Configuration Number of SR5500 units in the system Number of SR5500 instruments controlled by TestKit 4 7 Synchronizartion Mode Syncronize Play Pause Stop across units Active X Play Pause Stop All units at once Selected unit System based Correlation Coefficient type Envelope Correlation Coefficient C Instrument based Frequency Mode of the system RF Frequency Mode Lower Band 400MHz 2700MHz MIP Address of this PC Select the IP Address of this PC from the list of found 10 1615 IP Addresses for this PC chics Unit 1 Unit 2 Unit3 Unit 4 Channel Configuration Dual v
122. e SR5500 Testhit or the Application Programming Interface API Refer to the Setup Guide included with the instrument for details on connecting the SR5500 system 1 4 1 Front Panel Description Le a en CON Cp E C 0 ws w w rr tW wa t 000 0000000000000000000004000000000000000000000 OO E OOf 000000000000 D0 SPIRENT D0 SR5500 WIRELESS CHANNEL EMULATOR lobboboboboooooc CHANNEL 1 ae DUPLEX CHANNEL 2 OVERLOAD GQHaiarketeavarakesayaa ht C0 t j 7 A NA NA Ve MA MA NWN La Va bug d Na vd vd 4 dd es NA NA A N NA CHANNEL2 O OVERLOAD POWER STATUS 1 H o 2000000000 QU LU LU I Li 4 2 42 not Figure 1 6 SR5500 Front Panel EE SPIRENT inspired innovation Communications 14 SR5500 USER MANUAL Figure 1 7 SRSS00M Front Panel Front Panel Control Indicators D POWER Switch The Power switch is located in the bottom right hand corner of the front panel STATUS LED The Status LED is located next to the power switch and indicates the current status of the unit SR5500 is operating normally if the LED is green An error condition exists when the STATUS LED is red The LED takes a few seconds to illuminate during power up CHANNEL 1 OVERLOAD LED and CHANNEL 2 OVERLOAD LED The LED indicates the RF input si
123. e control protocol options LAN CR LF and IEEE 488 2 GPIB The command syntax remains the same regardless of the remote protocol The remote control protocol determines only the method by which SR5500 Testhit receives commands and provides responses 5 5 1 LAN CR LF Protocol SR5500 TestKit LAN CR LF mode supports an Ethernet connection using the TCP IP protocol suite SR5500 TestKit can be controlled from a TCP IP socket connection TestKit provides a SR5500 prompt when a socket connection is made and ready to receive a command To enter a Program Message type the message then press CARRIAGE RETURN Note that the unit echoes back each character as it is typed SR5500 TestKit executes the instruction and provides a response if necessary After SR5500 TestKit has processed a command it sends another prompt to indicate that it is ready to receive a command 5 5 2 GPIB Protocol SR5500 TestKit GPIB protocol supports a parallel bus control architecture in which SR5500 Testkit is one of the devices being controlled The PC running SR5500 Testkit must have a GPIB card installed for this to work The controller must connect to the PC running SR5500 Testkit not the SR5500 Instrument to control SR5500 Testhit The controller must meet all GPIB electrical and mechanical specifications The controller initiates all GPIB protocol transactions To communicate with SR5500 TestKit a GPIB controller must perform the following operations e Poll SR55
124. e current state of system parameters using the System Parameters tab Items in this view are read only Set Inpal Crest Cable interferer interference Interference Bil Hol Carrer Freq Z ers Factor dB Loss dB State Ratio Units kbps MHZ Carner F l gypse So linpi intaia inteiernce Inteterence Pt Rat MHz sypou dim ren Les Losey Factor iii Loss dB Sales Had ws Unis kbp anzao Faso 1000 000 oo oo wo ow oF oo ow 2112400 Fose 000 e0 oo oo 150 ow or oo m anzao Fose 000 6000 oo oo 150 ow or oo n 2112400 False 1000 4000 oo oo 0 oo oF oo cH aiiz4o0 Fase 000 4000 oo oo mo oo oF oo en 2112400 Faise 1000 4000 oo oo 150 ooo oF oo CN F o 00 oo oo 160 a OFF oo CN 160 000 OFF oo CN Channel Configuration 2m7 IT IP Feder oe 127 0 0 2 Ch Corr lstion AG Correlation 0 00 Figure 2 90 System Parameters View 2x2 MIMO Mode SPIRENT iaspices innovation Communications 78 SR5500 USER MANUAL Carrier Freq mares Set Input SetOutput InputPhase Output Phase Crest Cable MHz YP dB m dBm Deg Deg Factor dB Loss dB Channel Configuration 4x4MIMO Channel Configuration 4x4 MIMO Channel Configuration 4x4 MIMO Channel Configuration 4x4 MIMO IP Address 127 001 IP Address 127 0 02 IP Address 127 003 IP Addre
125. e given unit Averages will be 2 lt real gt Parameter Range Selection RST Resolution 1 t 4 uni 1 to 2 channel 1 1 lt real gt 1to 31 20 1 i SPIRENT inspires innovation catons CHAPTER SIX COMMAND REFERENCE 179 UNIT CHAN MEASure ILEVel Query the measured input level for the given channel of the given unit in dBm Parameter Range Selection RST Resolution 1 to 4 unit 1 to 2 channel 1 1 UNIT CHAN MEASure ITYPe lt string gt UNIT CHAN MEASure ITYPe Set the Input Measurement type for the given channel s power meter of the given unit Parameter Range Selection RST Resolution 1 t 4 uni 1 to 2 channel 1 1 lt string gt CONTinuous TRIGgered CONTinuous UNIT CHAN MEASure OAVGexp lt real gt UNIT CHAN MEASure OAVGexp Set the number of Output Averages for the given channel s power meter of the given unit Averages will be 2 lt real gt Parameter Range Selection RST Resolution 1 to 4 unt 1 to 2 channel 1 1 lt real gt 1 to 31 20 1 UNIT CHAN MEASure OLEVel Query the measured output level for the given channel of the given unit in dBm Parameter Range Selection RST Resolution 1 t 4 uni 1 to 2 channel 1 1 UNIT CHAN MEASure OTYPe lt string gt UNIT CHAN MEASure OTYPe Set the Output Measur
126. e of the 3GPP s goals is to maintain mobility up to 350 km h HST tests are included in the 3GPP standards The High Speed Train model focuses on a signal s Doppler Shift as a User Equipment UE in a high speed train 300 350 km h passes a Base Station BS The model in the standards for the High Speed Train consists of a single static path whose instantaneous Doppler shift is given as ve t fa eus o t 2 2 Where fa is defined as V Ja E fe C Where fc is the carrier frequency v is the speed of the mobile in m s and C is the speed of light 3x108 m s and cos t is defined as ce ee on Din D 2 vt O lt 1 lt D v 1 5D t D 1 5D vt D v lt t lt 2D v SPIRENT mi munications 120 SR5500 USER MANUAL SES cos r cos r mod D t gt 2D v 2 3 where D 2 is the initial distance of the train from the BS and D min is the BS Railway track distance both in meters V is the velocity of the train in m s Cis time in seconds The actual shape of the frequency shift variation depends on the values of fa Ds 2 Dmin and v Figure 3 15 shows the instantaneous frequency shift for Ds 1000 m Dmin 50m v 350km h and fa 1340 Hz 3GPP TS36 104 Scenario 1 1500 1000 500 Doppler Shift Hz oO 500 1000 1500 Time sec Figure 3 15 High Speed Train Frequency Shift vs Time 3 7 3 Static Phase Shift A static phase shift is a result of
127. e parameter used in conjunction with the Interference level parameters determine the relative level of interference to carrier when using Eb No units Bit Rate Figure 2 79 Bit Rate Setting Refer to the Technical Reference section on page 107 for a detailed description of how to set the Interference Relative Level for each of the three units NOTE There are interdependencies between the output power available to the carrier and the output power available to the interferer Refer to the Technical Reference on page 107 for a detailed description of these interdependencies 2 7 3 4 Spectral Estimate Window SR5500 TestKit provides a spectral estimate of the Interference and Carrier at the output of the Impairment Channel The estimate does not take spectral roll off of the Interference Generator or Carrier Fading into account ln SPIRENT mi PMU nce Cons 72 SR5500 USER MANUAL d p 40 00 CF 1960 000 MHz 50 00 Res Bwt 10 KHz 0 00 70 00 20 Noise 90 00 2 Carrier 90 00 100 00 110 00 120 00 1954 1956 1958 1960 1962 1964 1966 Frequency MHz Figure 2 80 Spectral Estimate Window 2 7 4 Instrument Setup View The SR5500 Instrument Setup view is used to setup a number of system level parameters Rayleigh Fading correlation between channels can be set in this window Fading correlation is only valid if the path parameters for the different channels matc
128. e the window click the Cancel button 2 7 2 13 Relative Path Loss Each path can have its own relative fixed loss To set the Relative Path Loss use the corresponding column NOTE The SR5500 normalizes the power of each path to maintain a composite channel power that equals the Set Output Level The Path Loss value indicates the path power relative to other paths in the Power Delay Profile If only one path is enabled the Relative Path Loss setting is disabled 2 7 2 14 Log Normal Parameters Each path can have Log Normal fading enabled You can also set the Rate and Standard Deviation of Log Normal NOTE Enabling Log Normal on any path reduces the available output power setting for the channel and degrades system noise and spurious performance This is due to the additional headroom requirements of Log Normal This is true even if the path is not enabled 2 7 3 Interference The SR5500 is capable of accurately generating and summing Interference into each channel independently The Interference generated is AWGN at a configurable bandwidth and relative level ee SPIRENT nm MUA CAC ons i CHAPTER TWO OPERATION REFERENCE 69 2 7 3 1 Accessing the Interference Editor Access the Interference Editor view by clicking the Interference Editor button in the View Shortcut window or by selecting View gt Interference Editor The Interference Editor is available for Channel 1 or Channel 2 Select
129. eal gt MIMO RELPower lt Sink Index gt lt Source Index gt MIMO STATe lt Sink Index gt lt Source Index gt OFF ON MIMO STATE lt Sink Index gt lt Source Index gt NUMCHannels RELPower lt real gt RELPower ROSCillator TCU MODe DIVERSity NONDIVERSity TCU MODe TCU PRESent TCU AUXinput SINgle SPLit TOUS AUK Input CHAPTER SIX COMMAND REFERENCE 159 6 2 Command Descriptions NOTE In 4x4 MIMO mode the channel and path parameters can be accessed as CH 1 2 for both the units in 4x4 MIMO mode or CH 1 4 for the main unit Units 1 or 3 For example if Units 1 and 2 are in 4x4 MIMO mode RF3 can be accessed as UNIT1 CH3 or UNIT2 CH1 IDN Query the RPI software identification OPC Query the Operation Complete bit OPT Query the RPI Options string The length of the response depends on the number of units in the suite For a suite with multiple units the option strings for all the units are returned beginning from Unit 1 The response string for a single unit is shown in figure _ 20 tid fai fa 0 00 0 0 0J0 o 0 x x o o o 1 o o o o 1 Le eens Uppa Band Available Middle Band Available Res awed 0 AW GN Option Reserved 1 Complex Con elation Option MINK Option UDIG Present Proprietary Proprietary SR5078 Present x MIMO Hardware Present Reserved 0 B Figure 6 1 OPT Response String for a Single Unit RST Reset all RPI parameter
130. ear 5 degrees Number of Independent RF Channels 2 196 SR5500 USER MANUAL 7 2 1 Input Signal Level Autoset Range Damage Level 1 22 Range Output Signal Level Resolution Accuracy Damage Level 7 2 3 Channel Crest Factor Range Effect on I O Ranges Absolute Channel Delay In to Out 7 2 4 Spurious Emission Levels Within Channel Outside Channel within 400 to 2700 MHz i SPIRENT mi MUMCAC ons O to 30 dBm 20 dBm 30 to 110 dBm 0 1 dB 1 dB 20 dBm 15 to 35 dB Max Input Level 15 Crest Factor Setting dBm Min Input Level 15 Crest Factor Setting dBm Max Output Level 15 Crest Factor Setting dBm Min Output Level 110 dBm lt 4 0 us Spurious Emission Levels 40 dBc maximum 10 dBc maximum CHAPTER SEVEN TECHNICAL SPECIFICATIONS 197 7 2 5 Residual EVM Better than 36 dB typical per subcarrier measured at 50 dB output power actual value depends upon signal format symbol rate etc 7 2 6 Noise Floor The specifications are measured under the following conditions e RF Input Level 10 dBm CW Signal e Frequency 2 14 GHz e The Noise Floor of the Spectrum Analyzer was compensated e Analyzer has the best commercially available Noise Figure SR5500 Measured Output Noise dBm Hz Output Power Level Setting Figure 7 1 SR5500 Noise Floor Stepped response comes from finite precision 0 1 dB o
131. eceiver bandwidth at the output of the SR5500 C1 N Ratio of Carrier 1 to the Noise power C2 N Ratio of Carrier 2 to the Noise power Mode 3 Allows you to set the absolute power of both the carriers and the noise N Total Noise power within the Receiver Bandwidth at the output of the SR5500 C1 Total power of Carrier 1 at the output of the SR5500 C2 Total power of Carrier 1 at the output of the SR5500 2 7 4 1 MIMO Advanced Options The MIMO Advanced Options window allows you to enable or disable the individual MIMO sub channels Additionally you can set the relative gain and phase of the sub channels Unit 1 2x2 MIMO Advanced Options MIMO Channel Configuration 7 h 63 01 dBm 12 h 63 01 dBm M m nid f h12 dB h22 f 1h21 00 dB Note The Signal Levels CT C2 and the Signal to Noise Ratios C1 N1 CANA will be maintained independent of the state of the MIMO Sub Channels Phase Settings h11 00 Deg h12 00 Deg h21 00 Deg h22 00 Deg __ Dent o ces Figure 2 84 TestKit System Setup View 2x2 MIMO Mode S P I RE NT inspired Innovation Communications CHAPTER TWO OPERATION REFERENCE 75 Setting the h11 h12 ratio sets the power ratio between the channels directed to RF Output 1 Setting the h22 h21 ratio sets the power ratio between the channels directed to RF Output 2 You can also disable the sub channels by clicking the appropriate checkbox If a sub c
132. ed Innovation mmumcations CHAPTER THREE TECHNICAL REFERENCE 109 Relative Power dB WO gt Relative Delay Spread Figure 3 2 2D Power Delay Profile of Figure 3 1 3 3 Static Relative Path Delay Relative path delay is a phenomenon where individual signal paths from the transmitter to the receiver arrive at different times An example of this is shown in Figure 3 1 between Paths A and C Path C arrives at the receiver the automobile a finite time after signal Path A The net effect of the arrival time difference is to spread the originally transmitted signal at the receiver in time In a digital wireless communications this causes received symbols to overlap resulting in inter symbol interference The amount of relative path delay varies with terrain and application In an indoor application delays could be in the tens 10s of nanoseconds ns where 10 ns is about 10 feet In outdoor applications delays of 10 microseconds us or less are typical 1 us is about 1000 feet Delays greater than 50 us are rare in cellular environments Path delay in the SR5500 is set relative to the first arriving path This delay setting is in addition to the absolute electrical delay through the system 3 4 Time Varying Relative Path Delay A Power Delay Profile shown in Figure 3 3 provides a snapshot of the impulse response of a radio propagation channel In mobile applications the number of paths in a Power Delay P
133. ement type for the given channel s power meter of the given unit Parameter Range Selection RST Resolution 1 t 4 uni 1 to 2 channel A 1 lt string gt CALCulated MEASured CALCulated UNIT CHAN MEASure TTHReshold lt real gt SPIRENT mm mmumcations 180 SR5500 USER MANUAL UNIT CHAN MEASure TTHReshold Set the Output Measurement type for the given channel s power meter of the given unit Parameter Range Selection RST Resolution 1 to 4 uni 1 to 2 channel A 1 lt real gt 50 to O dBm 30 0 1 UNIT CHAN NUMPaths Query the number of paths in the given channel of the given unit UNIT CHAN OUTPPHASe lt real gt UNIT CHAN OUTPPHAse Set the RF Port Output Phase Offset Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 360 0 to 360 0 O 0 1 UNIT H CHAN OUTPut lt real gt UNIT CHAN OUTPut Set the Output Level of the given channel of the given unit The corresponding query will return the set output level in dBm Parameter Range Selection RST Resolution 1 t 4 uni 1 to 2 channel 1 Ab lt real gt 110 to 30 dBm 60 0 01 The actual range will vary based on the state of other system parameters UNIT CHAN OVERLOad Query the overload state of the given channe
134. ency 824 3 Figure 2 19 Select Carrier Frequency Button To set the Carrier Frequency based on the application select the appropriate Technology then the Unit Under Test Next click the Select Band and Channel Number button Select the appropriate Band from the list box Finally enter the appropriate Channel Number The Test Assistant uses these settings to calculate the Carrier Frequency The Carrier Frequency appears below in the Carrier Frequency textbox i SPIRENT re Communications CHAPTER TWO OPERATION REFERENCE 39 2 4 3 Automatically Selecting a Channel Profile The Test Assistant allows you to set the Fading Profile settings in the Channel Editor according to an industry standard If the industry standard fading profile includes a path correlation component it is also recalled SSS ete x C Do not overwrite settings in the channel editor Use the following standard fading profile Selected Profile Fading Profile 1 7 CDMA2000 Mobile M Fading Profile 1 E Fading Profile 2 E Fading Profile 3 E Fading Profile 4 E Fading Profile 5 E Fading Profile 6 fJ BTS El Vehicle Speed 8 km h a Number of Paths 2 Path 2 Power 0 dB Path 1 Delay 0 us OK Cancel Figure 2 20 Test Assistant Channel Editor If you want to leave the current settings in the Channel Editor click the Do not overwrite settings in the channel editor button You are permitted to select
135. ent Annual Service Agreement ASA expiration date must be later than or equal to the release ASA date To verify the ASA expiration date refer to Section 2 12 on page 95 Version 3 12 Release ASA DATE AUGUST 2008 e Resolved an issue with Automatic Phase Calibration e Added command line switch NL to disable file logging Version 3 11 Release ASA DATE AUGUST 2008 e Added support for 4x4 MIMO e Added support for DEE in 2x2 MIMO Mode e Added support for MIMO parameters in DEE e Added support for the 3GPP High Speed Train Model e Added support for Triggered DEE e Added the ability to perform Automatic Phase Calibration e Added the ability to modify the phase for the MIMO sub channels e Added support for LTE fading profiles e Added enhanced support for the LCD panel e Resolved an issue with the delay uncertainty on power up J SPIRENT inspires innovation Communications CHAPTER ONE INTRODUCTION 25 Version 3 01 Release ASA DATE NOVEMBER 2007 e Added support for legacy SR5500 hardware The software now supports both the SR5500 and the SR5500M hardware e Added Support for detection and control of the SR5078 Test Switch hardware e Resolved an issue where the AWGN generator would fail to start when the system was powered on when extremely cold lt 00 e Resolved an issue where the output power was above expected when the fading player was stopped the unit was in MIMO mode and Log Normal Fading
136. er it traverses a complex radio channel that distorts the intended signal transmission The transmitted signal takes multiple paths to the receiver These paths are caused by the signal bouncing off reflective surfaces such as the ground buildings or trees Mobility between the transmitter and receiver causes the characteristics of these paths to be time varying IS 4 atn DORS Transmitter Figure 3 1 Typical Multi path Fading Scenario The radio propagation effects can be characterized by fast fading also known as multi path fading relative path delay relative path loss and slow shadow fading also known as log normal fading Different mobile environments generate various combinations of these effects The cause of each of these characteristics will be discussed along with their effect on the transmitted signal All of these characteristics can be demonstrated with a simple transmitter to receiver diagram Figure 3 1 is a diagram of a typical mobile receiver the car as it drives along a roadway Paths A B C and D depict just four of the many signal paths from the transmitter to receiver 108 SR5500 USER MANUAL Multiple versions of the originally transmitted signal display on the receiver each having taken a different route A D through the radio propagation channel as shown in Figure 3 1 Because the macroscopic signal paths take a different route through the topology of the environment they each travel a d
137. es en eme sb cine ee an oi 12 TA SR O0 CUITE TO EE nee Dons ce eee do 13 i FrontPanel Description siccssavreccccassduastesansvoascucnacesadoionsussawbenntcvabaseaadevasceuse 13 1 4 2 Rear Panel Description rss 15 1 5 QUICK Start PI OCC GUNG ic en eco den de ee ot lee 18 1 6 Verification POC COUN EG ce cconcwssscsscssswessesvsenedsapeisesesdsanosseosseeseteveosveesess 19 1 7 Quick Start Using Test Assistant seseseseseseeosossssssesesesesesesosososos 21 ES VEON ASTON ere ee E EE EENE 24 Operation ReferenCe essccsecseeceecsecceeccecsecsecseeseecceccecseeceecseeseeseeoo 27 2A OVCTVICW eoe EE E EEE 27 2 2 Operational OV EIV CW iorssceesesicese step ertaceecoceuacececiasncseatoecesevieaecianseawnsess 27 2 2 1 CONNECTING to THE SR55OO cceccccesccvesscvssscnsccccssccescccessccessccessccesscsescesess 28 2 2 2 BASIC O Der GUO aac veconienncssasn cacaaciysaecuwanesssaGaneuesdeawestesansdedseaseeseesbsceesendes 29 2 CH ANMEUIMOOES eco na se ace aa ass EEE 35 234 Single Channel MOQUE te dar eebn nes eo din des ac ae taste 35 222 Dial CGC ModE a te a ne ne 35 2 D NRA DVE ID MOOO see ee ac eee a ce ei 36 234 IX DIVE I VOC ne sans and dames en dan ee andere doc ee ouh codecs 36 235 22 VIMO MOGE act en ae eee en ee eos ce 37 2 10 AMMO MOGE ee he de en lie een do ie in 37 2 4 Using the Test ASSIStANL ccccecsscscscsscsceccececcscscecscssscsescesesseces 38 II SR5500 USER MANUAL 24
138. essible when running DEE Figure 2 21 Channel Player Window If the fading emulation playback is paused or stopped the Channel Player view remains Static If the playback is running the Channel Player view constantly changes to show the latest update in the fading emulation playback The Channel Player features two unique presentations Change the presentation using the list box located above the graph The first presentation the Power Delay Profile shows the instantaneous Power Delay Profile The delay for each path is represented by the position of each bar on the X axis Delay The power of each path is represented by the height of each bar along on the Y axis Power The Display Relative Path Loss checkbox shows and hides the average power indicator for each path If Additive Impairments are enabled on the selected channel a horizontal line representing the relative power of the impairment to the channel displays in the Player view NOTE The average power indicated for each path is relative to the total composite output power of the channel This does not map directly to the path loss settings in the Channel Editor table A second presentation the Power Delay Profile History is similar to the first presentation but also displays a brief history The older instantaneous Power Delay Profiles move back along the Z axis time and the current DPD is added to the front
139. eter Do RST Resolution 1 to 2 channel CE lt real gt 0 001 to 32 767 rad s UNIT CHAN PATH DELay SDELay PERiod M S PI RENT ses novation cations 182 SR5500 USER MANUAL Query the Sliding Delay Period for the given path of the given channel in the given unit in seconds Parameter Range Selection RST Resolution 110 4 uni 1 to 2 channel 1 1 1 to 24 path 1 1 UNIT CHAN PATH DELay VALue lt real gt UNIT CHAN PATH DELay VALue Set the Fixed Delay for the given path of the given channel in the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 to 2 channel 1 to 24 path lt real gt O to 2000 us ii O 0 0001 UNIT CHAN PATH DFRequency lt real gt UNIT CHAN PATH DFRequency Set the Fading Doppler Frequency for the given path of the given channel in the given unit Parameter Range Selection RST Resolution 1 t 4 uni 1 to 2 channel 1 1 1 to 24 path lt real gt 2000 to 0 1 0 1 to 2000 Hz 41 7 0 01 UNIT CHAN PATH DVELocity lt real gt UNIT CHAN PATH DVELocity Set the Fading Doppler Velocity for the given path of the given channel in the given unit Parameter Range Selection RST Resolution 1 t 4 uni 1 to 2 channel 1 1 1 to 24 path lt real gt Range de
140. ettable Carrier Output Power dbm 60h 65 l I L l 30 20 10 0 10 20 30 C N db Figure 3 23 C N vs Settable Output Power Receiver Bandwidth Noise Bandwidth Setting the receiver bandwidth to be less then the total noise bandwidth affect this relationship The following plot shows the relationship for a typical WCMA setup Noise Bandwidth 6 5 MHz Receiver bandwidth set to 3 84 MHz C N versus Maximum Settable Output Power WCDMA 25 i T T 1 T 30 oe pasts 35 40 Maximum Settable Carrier Output Power dbm LU ds on T I 60 65 j i i 30 20 10 0 10 20 30 C N db Figure 3 24 C N vs Settable Output Power Receiver Bandwidth 3 84 MHz Noise Bandwidth 6 5 MHz SPIRENT taspices movstion Communications 128 SR5500 USER MANUAL The AWGN source is generated using real time signal generation methods The AWGN in channel 1 is uncorrelated from the AWGN generated in channel 2 The methods enable band limited noise generation with very long sequence durations resulting in excellent Statistical properties of peak to average ratio and complementary cumulative distribution function CCDF Refer to Figure 3 25 for a typical plot of the band limited AWGN CCDF 100 10 0 1 0 01 0 001 0 0001 0 10 20 dB Figure 3 25 Typical SR5500 Band Limited AWGN CCDF 3 10 Power Meter The SR5500 contains a Power Meter
141. ew by clicking the DEE button in the View Shortcut window or by selecting View gt DEE View 4 SR5500 TestKit untitled fel File View Configuration Execute Tools Units Help Selected Unit a 2 De Ce AkMo a SPIRENT Unit 1 Gpen Emulation File C Vivek 5500 GUI DEE State Files R2 3 R2 3_Dual_13 States_CH1 P1_Doppler Vel stb Unit2 Open Emulation File C Vivek 5500 GUINDEE State Files R2 3 R2 3_ Dual_22 States_CH2 P1 Doppler Vel stb Trigger Mode Playback Mode Free Run New Emulation File C Triggered Play G T Playback Controls All Units Elapsed Time PO SU OR IAN Overload O ares o RF Output E oo AV Oo CIN d OT catie Less TE oem Channel Mode Dual RF Band Lower Technology UMTS Unit Under Test UE Unit Fading Uncorrelated Unit AWGN Uncorrelated Status Not Connected Figure 2 100 Dynamic Environment Emulation DEE View 2 8 3 2 Selecting an Emulation File Select the Emulation file by clicking the Browse button If you are controlling multiple SR5500s you must select a separate file for each unit The number of States and the State Durations of the files must match Refer to Section 2 7 2 on page 80 for further details 2 8 3 3 Configuring Playback Mode Configure the Playback mode by clicking the Play Once 2 or Wrap Around button Play Once plays the Emulation file to the end resets and remains stopped at the beginning of State 1 Wrap Around continues to loop the Emulation
142. ew from the Views Pane M SPIRENT mm MUM CONS CHAPTER FIVE REMOTE PROGRAMMING INTERFACE OPERATION 141 LA SR5500 TestKit untitled File View Configuration Execute Tools He DH be s ts Options Channel Editor Enable Mor Enable TCF Channel Player Interference Editor DEE Instrument Setup Summary Communication Playback Contro Elapsed Tir Chan Carrier F Measured Frea MHz Z Band Output creme RE RE Figure 5 2 RPI View Button 4 Inthe RPI View select Start the Listener fle Won forgeries Ent Toes Heu z SPIRENT Remote Programming Interface RPM m ipiam j E Esri bore les agen O i TOR echo 0 Chase bie Chul AF East Lower Ticho Piore ent Uecker Test Ubica Li Fikes riire Le SGN erele Sala Mot use Figure 5 3 RPI View Window This starts the TCP IP or GPIB listener At this point you can make a connection to SR5500 Testhit but commands will not be implemented NOTE If the listener is stopped you will be disconnected 5 Click the Remote Mode button Commands can now be accepted by SR5500 Testhit In this mode you cannot exit the RPI view 6 To exit the RPI view click the Local Mode button This does not disconnect any remotely connected users but a remote user cannot EE a SPIRENT inspires innovation Communications 142 SR5500 USER MANUAL send commands while in Local Mode This feature also verifies
143. f Fuses Fuse Location Conductor 7 8 4 Operating Environment 3 Amp 250 Volt slow blow fuse 1 Hot conductor Temperature O to 40 degrees C Humidity 10 to 90 noncondensing 7 8 5 SR5500 Dimensions and Weight Height 8 5 inches Width 16 88 inches Depth 21 inches nspir ed Innovation CHAPTER SEVEN TECHNICAL SPECIFICATIONS 209 Weight 7 8 6 Height Width Depth Weight 7 8 7 65 pounds 6 GHz Option Dimensions and Weight SR5500 Control Interfaces Interfaces Provided Interface Access System Configuration Interfaces Provided 7 8 8 3 5 inches 17 inches 14 4 inches 15 pounds Ethernet COM API Support limited to MS Windows Operating Systems RS 232 10 MHz Reference Requirements External 10 MHz Reference Input Connector Type Input Level Range Input Level PPM from Internal 10 MHz Reference Connector Type Output Level Range Type Accuracy 5002 BNC connector rear O dBm 2 dB 10 MHz lt 2 PPM 5002 BNC connector rear O dBm OCXO lt 1 PPM ei SPIRENT inspires innovation Communications 210 SR5500 USER MANUAL _ 7 SPIRENT inspires innovation Communications SR5500 Fuse Replacement Procedure The fuse is installed at the factory to match the most commonly used line voltage in the country of destination CAUTION Disconnect from the supply before servicing 1 Locate the power entry module on rear panel 2 Us
144. f measurement data 7 2 7 RF Physical Interface Characteristics Impedance 50 ohms Input VSWR lt 1 5 Connector Type N Female Front Panel CH1 RF In CH1 RF Out CH2 RF In CH2 RF Out Bypass Mode Insertion Loss 12 dB SPIRENT mm PMU nce Cons 198 SR5500 USER MANUAL 7 3 RF Channel Specifications with the SR5500 6 GHz Option The channel specifications for the SR5500 equipped with the SR5500 6 GHz RF Converter are the same as in section 5 2 with the following exceptions Frequency Range 7 3 1 Input Signal Level Autoset Range 400 to 2700 MHz Autoset Range 4100 to 6000 MHz Damage Level 7 3 2 Output Signal Level Range 400 to 2700 MHz Range 4100 to 6000 MHz Resolution Accuracy Damage Level 7 3 3 Channel Crest Factor Range Effect on I O Ranges 400 to 2700 MHz Effect on I O Ranges 4100 to 6000 MHz f SPIRE R E N T nspired Innovation PUM LCC 400 to 2700 MHz and 4100 to 6000 MHz O to 30 dBm 10 to 30 dBm 20 dBm 30 to 110 dBm 40 to 80 dBm 0 1 dB 1 dB 20 dBm 15 to 35 dB Max Input Level 15 Crest Factor Setting dBm Min Input Level 15 Crest Factor Setting dBm Max Output Level 15 Crest Factor Setting dBm Min Output Level 80 dBm Max Input Level 5 Crest Factor Setting dBm Min Input Level 15 Crest Factor Setting dBm Max Output Level 25 Crest Factor Setting dBm Min Output Level 80 dBm CHAPTER S
145. f the RF ports If the unit is powered down or the ambient temperature changes the nominal phase through the unit changes as well Allow the unit to warm up before taking any phase measurements or setting any offsets We recommend you verify the phase correction factors before beginning a round of testing To access this window select Configuration gt Phase Calibration or click the Phase Calibration icon P from the toolbar Phase Calibration Unit 1 Unit 2 Unit 3 Unit4 Input Output RFI 00 Deg RF1 00 Deg RF2 0 0 Deg RF2 00 Deg Calibrate Figure 2 46 Phase Calibration Window Dual Channel Mode se SPIRENT inspired innovation communications 54 SR5500 USER MANUAL Phase Calibration Unit 1 Unit 2 Unit 3 Unit 4 Input RFI 0 0 Deg RF2 0 0 Deg Figure 2 47 Phase Calibration Window 2x2 MIMO Mode Phase Calibration Unit 1 2 Unit 3 Input RFI 0 0 Deg RF2 00 Deg RF3 0 0 Deg RF4 0 0 Deg Figure 2 48 Phase Calibration Window 4x4 MIMO Mode In MIMO Mode 2x2 and 4x4 a Calibration Wizard is available to assist in equalizing the phase of the different sub channels The calibration Wizard allows you to perform the phase calibration using the internal circuitry of the SR5500 Automatic Mode or perform the measurements manually with a Network Analyzer or similar equipment Manual Mode The Automatic Mode eliminates the need for a Network Analyzer Before running t
146. file indefinitely NOTE When the file loops back to State 1 the state of the instrument will be the same as it was the first time in State 1 with the exception that the random number generator creating Rayleigh fading will not reset This means that statistically State 1 will be the same each time DEE loops but the instantaneous phase and amplitude distortion will differ This is done to avoid any glitches when wrapping from the last state to the first 4 SPIRENT res LOmmunica tions CHAPTER TWO OPERATION REFERENCE 87 2 8 3 4 Configuring Trigger Mode Configure the Trigger mode by selecting Free Run or Triggered Play in the Trigger Mode settings If Free Run is selected the Player starts playing as soon as you click the Play button If Triggered Play is selected the Player waits for an external Trigger after clicking the Play button to start playing Once it gets the trigger the player starts playing In Wrap Around mode the player waits for the trigger only for the first loop The trigger cable should be connected to CH1 TRIG IN If multiple units are being controlled the trigger needs to be sent to Unit 1 in Triggered Play mode Refer to Section 7 5 11 1 for DEE trigger characteristics and trigger signals 2 8 3 5 Enabling DEE DEE Mode can be enabled by clicking on the Enable button When DEE is enabled the following sequence of events occur 1 All other views are locked out and you cannot leave the D
147. ge is applied to the path in all sub channels 2 7 2 1 Using the Grid The grid displays the current path parameter settings and allows you to change the current parameter settings Each cell displays a unique parameter setting Some parameter settings have a list of valid values while others allow a range of values To change a value in the grid 1 Select the appropriate cell If the parameter has a list of values a list box displays 2 Click the list box to display the available choices Click the desired value from the list to complete the change 3 If the parameter has a range of values a textbox displays Adjust the value in the textbox to match the desired value Press Enter when finished to complete the change 4 Toset the same value in all enabled paths select the column by clicking the column name Enter the desired value in any cell in the selected column SR5500 TestKit updates all the enabled paths to match the new setting i _ SPIRENT spied innovation Communications 62 SR5500 USER MANUAL 2 7 2 2 Accessing Path Modulation Parameters The SR5500 supports numerous path parameters to accommodate a wide variety of testing demands The grid can display all of these parameters However SR5500 Testkit is initially configured to display only the most commonly used parameters You can access the additional parameters two ways by opening the Path Modulation Parameters window or by adding the parameters
148. gnal has peak levels above the permitted range and will be clipped by the instruments input circuitry The overload LED should be monitored to ensure the signal applied at the RF Channel input is within the specified range CHANNEL 1 BYPASS LED and CHANNEL 2 BYPASS LED This indicator tells whether the channel is in bypass mode The channel is bypassed when the LED is green Front Panel Signal Input Output Connectors RF1 and RF2 IN N Connector 50 2 This connector functions as the channel RF input RF1 OUT DUPLEX on SR5500 N Connector 50 Q This connector functions as the channel 1 RF output RF1 OUT OUT2 Available on SR5500 Only N Connector 50 Q Reserved for future use 9 CHANNEL 2 RF OUT N Connector 50 Q This connector functions as the channel 2 RF output RF1 and RF2 LOIN This connector functions as the channel local oscillator input LO IN must be connected to LO OUT via the Loop back cable supplied with the SR5500 RF1 and RF2 LO OUT This connector functions as the channel local oscillator output LO IN must be connected to LO OUT via the Loop back cable supplied with the SR5500 4 SPIRENT inspires innovation Communications CHAPTER ONE INTRODUCTION 15 Front Panel Signal Input Output Connectors 1 LCD DISPLAY Available on SR5500M Only The LCD display is used to display SR5500 status information
149. gure 2 117 In this window you can set the Channel to Channel Correlation The available range for the current coefficient entered displays at the bottom left of the window Correlation Coefficient Correlation Coefficient Between Units _Clear U1 chi ie 1 Ie CES co cv IE U2 Ch 000 000 000 U2 Ch2 Valid Range 0 00 to 1 00 Cancel Figure 2 117 Correlation Coefficient Window Initially this window shows all channels as Uncorrelated You can enter values in any order Values entered higher in the matrix affect the range of values lower in the matrix Because of range dependencies we advise you to enter the values from top to bottom by tabbing through the matrix A i SPIRENT mi PHM LCC rs 104 SR5500 USER MANUAL NOTE There are times when no range is possible for a given correlation coefficient This occurs when the matrix can not be physically implemented in the real world If this occurs the values elsewhere in the matrix must be changed to correct the condition If you select Complex as the Correlation Coefficient Type for a set of units not in MIMO mode the Complex Correlation window displays as shown in Figure 2 118 Complex Correlation i le 818121 Q te te de t il ORO LEE R ERE MAR de TEE t ue Le t LERE elelelele ELE lel al stele 5 8 8 5 8 FEEEEE
150. h For example if the paths on Channel 1 are set to have a Doppler different from those on Channel 2 the correlation is invalid An indicator on the status bar informs you if this is the case When the Correlation Coefficient is set to System based correlation is unavailable in this window Refer to the Controlling Multiple SR5500s section on page 96 for details Instrument Setup Channel Parameters Cle 600 Bm CI N1 dB C2 60 0 Bm C2 N2 dB Ne z dBm C1 N1 N2 dBm C2 N2 dB D c1 60 0 dBm Ni dm C2 600 dBm N2 Bm Dual Channel RF1 Input RF1 Output Correlation Coefficient RF2 Input RF2 Output Channel Correlation Type Envelope v Coefficient 0 00 Correlation Coefficient 0 00 Figure 2 81 TestKit System Setup View Dual Channel Mode SPIRENT sinon Communications CHAPTER TWO OPERATION REFERENCE 73 S Sh5500 TestKit untitled Fike View Configuration Execute Tools Help Se Dee SAANKO a amp SPIRENT Instrument Setup jm Channel Parameters 2x MIMO Channel Ci 400 om cw FF C2 40 0 dm Came 8 Nie 7 am cur We am cau 868 RF1 Output vil SAS SCH Testkit unie Bila Yen Comfigerstion Beecute Tools Units Help z i CEA BANS a H Y UOU SPIRENT Channel Parameter I Channel een aa ouf 600 emf _ col 60 Came Teg caf eoo cw _ p P RF Output cal eo C
151. h24_h14_Imag R22 h22_h21_Real R102 h33_h32_Real R182 h34_h11_Real R23 h22_h21_Imag R103 h33_h32_Imag R183 h34_h11_Imag SS e SPIRENT ses innovation mmumcations CHAPTER SIX COMMAND REFERENCE 169 R24 h22_h31_Real R104 h33_h42_Real R184 h34_h21_Real R25 h22_h31_Imag R105 h33_h42_Imag R185 h34_h21_Imag R26 h22_ h41_Real R106 h33_h13_Real R186 h34_h31_Real R27 h22_h41_lmag R107 h33_h13_Imag R187 h34_h31_lmag R28 h22_h12_Real R108 h33_h23_Real R188 h34_h41_Real R29 h22_h12_lmag R109 h33_h23_Imag R189 h34_h41_lmag R30 h32_h11_Real R110 h43_h11_Real R190 h34_h12_Real R31 h32_h11_Imag R111 h43_h11_Imag R191 h34_h12_Imag R32 h32_h21_Real R112 h43_h21_ Real R192 h34_h22_Real R33 h32_h21_Imag R113 h43_h21_Imag R193 h34_h22_ Imag R34 h32_h31_Real R114 h43_h31_Real R194 h34_h32_Real R35 h32_h31_Imag R115 h43_h31_Imag R195 h34_h32_Imag R36 h32_h41_Real R116 h43_h41_Real R196 h34_h42_Real R37 h32_h41_Imag R117 h43_h41_Imag R197 h34_h42_Imag R38 h32_h12_Real R118 h43_h12_Real R198 h34_h13_Real R39 h32_h12_Imag R119 h43_h12_Imag R199 h34_h13_Imag R40 h32_h22_ Real R120 h43_h22_ Real R200 h34_h23_Real R41 h32_h22_Imag R121 h43_h22_Imag R201 h34_h23_Imag R42 h42_h11_Real R122 h43_h32_Real R202 h34_h33_Real R43 h42_h11_Imag R123 h43_h32_Imag R203
152. hannel is disabled the output power on the associated RF port is maintained by increasing the power on the other sub channel In this case the power ratio setting is not used The Default button sets all values to the defaults By default all sub channels are enabled the hx1 hx2 ratios are set to O dB and the phases are set to O degrees Unit 1 2 4x4 MIMO Advanced Options MIMO Channel Configuration RF1 Input RF1 Output RF2 Input RF2 Output RF3 Input amp RF3 Output RF4 input pe RF4 Output Output 1 z Output 2 Relative Absolute Phase Relative Absolute Phase Power dB Power dBm deg Power dB Power dBm deg Mihi oc 602 00 Mih2i oo 602 oo Mihi2i 000 6602 00 M Ih221 000 6602 00 Mihi3i 000 602 00 M ih231 000 6602 00 Mihia 000 602 00 M ih241 000 6602 00 Output 3 Output 4 Relative Absolute Phase Relative Absolute Phase Power dB Power dBm deg Power dB Power dBm deg M ih31 000 6602 oo Mihi 000 6602 00 M ih321 000 6602 00 M ih42i 000 6602 00 M th331 foo 602 foo M ih431 000 602 foo M ih34 000 6602 00 M ih 000 6602 00 Note The Signal Levels C1 C2 C3 C4 and the Signal to Noise Ratios C1 N1 C2 N2 C3 N3 C4 N4 will be maintained independent of the state of the MIMO channels a _ Figure 2 85 TestKit System Setup View 4x4 MIMO Mode In 4x4 MIMO mode the relative power for each sub channel can be set The windo
153. he wizard set the input and output levels as they would be during testing The Calibration Wizard takes you through measurement steps for 2x2 MIMO 4x4 MIMO mode You need to be connected to the units in MIMO mode 2x2 or 4x4 to perform calibration with the Phase Calibration Wizard The Phase calibration wizard defaults to Automatic Mode eeN SPIRENT inspired innovation Communications Output RF1 00 Deg RF2 00 Deg Output RFI 00 Deg RF2 0 0 Deg RF3 0 0 Deg RF4 0 0 Deg CHAPTER TWO OPERATION REFERENCE 55 Phase Calibration Wizard Overview This wizard will take you through the process of calibrating the phase of the SR5500 unit Mode Automatic Manual Ensure that the phase of all equipment is locked through a common 10 MHz reference om Figure 2 49 Phase Calibration Wizard Overview Phase Calibration Wizard Step 1 of 3 Oveniew Measurement Confirmation c __ Measurement Instructions Instructions 1 Connect the RF1 Output of the SR5500 to the RF1 Input Click Next gt to proceed to the next step the measurement will made automatically Figure 2 50 Phase Calibration Wizard Step One Automatic Mode SPIRENT inspired innovation Communications 56 SR5500 USER MANUAL Phase Calibration Wizard Step 1 of 3 Oveniew Measurement Confirmation cr SSS ff Measurement Instructions Instructions 1 Connect
154. hip holds for log normal fading Mobile Velocity m s Log Normal Rate Hz Min Shadow Length m The log normal frequency in this equation will be the maximum rate that the mobile will move through shadows This corresponds to the maximum frequency of the log normal fading spectrum that has a span that begins near DC E NT inspired Innovation OTT Ca ors CHAPTER THREE TECHNICAL REFERENCE 123 3 9 Additive White Gaussian Noise AWGN interferer The AWGN type of additive interferer is generated independently for each of the two channels of the SR5500 The noise source is defined as being flat over the specified band within the tolerance specified in Section 7 6 on page 206 Refer to Figure 3 18 through Figure 3 22 for plots of typical band limited noise signal power vs frequency for each of the available noise bandwidths Typical AWGN frequency response Bandwidth 1 625 MHz Magnitude dB 19 da S co fe 20 Fe 10 Fo Fe 10 Fc 20 Frequency MHz Figure 3 18 Typical SR5500 AWGN Source Power vs Frequency 1 625 MHz Bandwidth Typical AWGN frequency response Bandwidth 3 25 MHz Magnitude dB rs L O T Fe 20 Feo Fe O Fe10 Fe 20 Frequency MHz Figure 3 19 Typical SR5500 AWGN Source Power vs Frequency 3 25 MHz Bandwidth i SPIRENT spied innovation Communications 124 SR5500 USER MANUAL Magnitude dB S Typical AWGN frequency response Bandwid
155. hs Fading Channel 12 Crest Factor Channel 1 1150 dB Channel 2 1150 dB Ethernet Setting Enter the IP Address of the remote unit 10 16 160 126 Query Change the IP address of the remote unit IP Configuration Figure 2 104 System Configuration Window Selecting the Band You can change the RF Frequency Mode from Lower to Upper Band and vice versa Refer to the Technical Specifications chapter on page 107 for details Certain parameters reset when the RF Frequency Mode changes Refer to Section 2 9 3 below for more details NOTE The Middle Band is only available with the SR5500 6 GHz EX option 2 9 3 Parameter Dependencies When the RF Frequency Mode is set to Upper Band the SR5500 limits the range of the parameters listed below Carrier Frequency Technology Unit Under Test Band Channel Output Level Input Level NOTE We recommend you make any necessary adjustments to the above parameter settings after changing the RF Frequency Mode parameter s SPIRENT ies noon LOTT Un Caco 92 SR5500 USER MANUAL 2 10 Downloading Firmware to the SR5500 NOTE Having an Internet Firewall that prevents FTP access into the Host computer will cause the Firmware upgrade to fail When SP2 of Windows XP is installed a Firewall is automatically put in place This firewall must be disabled before beginning the Firmware upgrade process The SR5500 comes with the required Fi
156. ifferent distance from transmitter to receiver This difference causes the paths to arrive at the receiver staggered in time and at a different average power level Fast and slow fading describe the time variation of the received signal level around an average power level Fast fading describes the signal variations of a macroscopic path that take place over the course of several milliseconds This level variation is primarily caused when the propagation channel creates destructive addition of the phases of a large number of reflected copies of the macroscopic path These multiple received transmissions are generated by microscopic scattering of the macroscopic path from obstacles in the local geographical area within a few hundred wavelengths of the receiver While fast fading effects are attributed to local scattering of the transmitted signal topographical changes in the propagation channel introduce slow fading effects that vary over tens 10s or hundreds 100s of milliseconds These signal variations are caused by a particular element of the geography such as a mountain or large building getting in between the transmitter and receiver partially blocking signal reception Slow fading is often described as shadow fading since in effect the geographic element casts a Shadow on the receiver Amplitude variation fluctuations happen at a slow rate 3 2 Radio Channel Power Delay Profile In wireless communications a signal transmitted to a
157. in Local Mode to adjust the IP Address parameter To change the IP Address SR5500 Testhit 1 Select Configuration gt Communication The Communication Configuration window displays 2 Edit the IP Address listed in the Ethernet Settings Click OK to save the changes and close the window Click Cancel to abandon the changes and close the window Updating the SR5500 Options The SR5500 permits the field addition of software options via an encoded password file Upon purchase of a soft option a password file is provided which enables the purchased feature To enable the purchased feature follow the instructions included with the password package provided by Spirent Note that these instructions require you to perform the operation with TestKit connected to the SR5500 To verify the SR5500 options and ASA expiration date view the Hardware Options by selecting Help gt Hardware Information 1 Ti SPIRENT mi MM LACE ors 96 SR5500 USER MANUAL Instrument Options Unit 1 IP Address SR5500 Firmware Version Model ASA Purchased ASA Expiration Date 4x4 MIMO Hardware RF Converter BCU S076 TCU December 2009 System Option Secondary Option Middle Band Option AWGN Option Complex Correlation Option MIMO Option Available 10 MHz Reference Module Version Upper Band Option Figure 2 107 Instrument Options Window NOTE SR5500 instruments purchased before version 1 20 may not have an
158. in each channel that is used to measure the signal levels coming into the unit The measurement is a wideband power measurement limited by the bandwidth of the SR5500 channel 26 MHz The Power Meter functions in two modes continuous and triggered mode In the continuous mode of operation the Power Meter analyzes the input signal at all times The number of averages that you select defines how many samples of data the meter will sum together before producing a result Although the Power Meter samples the input signal at 78 MHz the number of averages parameter refers to blocks of 16 samples So if the number of averages is set to 2 the actual amount of time that the signal will be sampled before returning a result is 1 78E6 16 2 0 410 us In the triggered mode of operation the Power Meter will only analyze samples that are higher in power than the set trigger level The triggered mode is intended for use in applications where the equipment signal is bursty GSM and WLAN are examples of applications where this mode should be employed Due to the instantaneous variations in power of communications signals some filtering must be employed in order to accurately detect when the signal is in the ON State The following is the criteria that the Power Meter uses to determine whether an individual sample is included in the average calculation f SPIRE Saee RE NT nspired Innovation MT mmumcations CHAPTER T
159. ing a small screwdriver pry out the fuse holder using the notch at the top of the power entry module Refer to diagram below 3 Pull the fuse from the fuse holder as shown above 4 To reinstall select the proper fuse and place in the fuse holder Part Number Type 1800 6776 10A 250V Slow Blow Fuse 5 Reinsert the fuse holder into the power entry module 6 GHz Option Fuse Replacement Procedure The fuse is installed at the factory to match the most commonly used line voltage in the country of destination CAUTION Disconnect from the supply before servicing 1 Locate the power entry module on rear panel 2 Using a small screwdriver pry out the fuse holder using the notch at the top of the power entry module Refer to diagram below BE y 3 Pull the fuse from the fuse holder as shown above 4 To reinstall select the proper fuse and place in the fuse holder Part Number 1800 7789 Type 3A 250V Slow Blow Fuse 5 Reinsert the fuse holder into the power entry module es SPIRENT mi MUMCAC ons SR5500 Proc dure de Remplacement de Fusible Le fusible d origine est dimensionn selon le voltage le plus courant dans le pays de destination ATTENTION D connecter de l alimentation avant l op ration 1 Localiser le module d entr e d alimentation sur le panneau arri re 2 Avec un petit tournevis enlever le support a fusible en u
160. ing the Carrier Frequency The Carrier Frequency must be set appropriately for each channel in order for the SR5500 to function properly The Carrier Frequency displays in the Channel controls and indicators as shown in Figure 2 26 and Figure 2 27 Inspired Innovation CHAPTER TWO OPERATION REFERENCE 45 ntl Playback Controis te 00 00 00 0 Carrier Freq MHz EO Overload Set Input cont ef CES Che RS ET CT em oE Freg MHz EN con MEE Chane METEN Adjust Garrier Freq MHz RER cer RES Channel Unknown Adjust Carrier Channel Mode 4x4 MIMO RF Band Lower Technology None Unit Under Te Figure 2 28 Channel Controls and Indicators 4x4 MIMO Mode To change the Carrier Frequency click the Adjust Carrier button SR5500 TestKit displays the Channel Adjust Carrier Frequency window Channel 1 Adjust Carrier Frequency x Select Band and Channel Number Band Unknown Channel Number Unknown Select Carrier Frequency Carrier Frequency 400 MHz OK Cancel Figure 2 29 Channel Adjust Carrier Frequency Window Adjust the carrier by setting the Band and Channel or by selecting the Carrier Frequency directly in MHz To set the Band and Channel ee SPIRENT inspires innovation Communications 46 SR5500 USER MANUAL 1 Click the Select Band and Channel Number button Select the appropriate Band from the list bo
161. l e A bursty signal with a short ON time If the carrier signal has a variable input level configure the Set Input textbox to the maximum expected RMS input signal power 2 7 1 7 Input Overload Condition If at anytime the SR5500 detects that the input signal level is higher than expected by the input circuitry an Overload condition exists During an Overload condition the Overload LED on the front panel of the SR5500 displays TestKit also illuminates the Overload indicator in the Channel Control and Indicators area He SPIRENT inspires innovation Communications CHAPTER TWO OPERATION REFERENCE 49 Overload Bypass Figure 2 36 Overload Indicator Dual Channel Mode Set Input 1000 A Overload Figure 2 37 Overload Indicator MIMO Mode 2x2 and 4x4 During an Overload condition the input signal is too high to be properly sampled by the unit input circuitry Therefore the SR5500 may cause undesired distortion of the input signal If the Overload condition exists or periodically reoccurs one or more of the following actions may be necessary 1 Reduce the signal level input to the SR5500 2 Repeat the Autoset or manually set the input level with a signal level more representative of its nominal level 2 7 1 8 Adjust the Power Meter Parameters The SR5500 contains a Power Meter that measures the signal levels coming into the unit The default Power Meter parameter settings are appropriate for
162. l Channel Mode Output C N Measured Set Ratio Output Output ES Eu of ofS OC ES Eu oO ofS OC Figure 2 43 Cable Loss Button 2x2 MIMO Mode ECS CES CE ET ED C Mm ED C ET ofS CT Figure 2 44 Cable Loss Button 4x4 MIMO Mode This opens the Cable Loss Setting window This window allows you to enter a value for the loss associated with a cable connected to the output port of the SR5500 When enabled a green LED lights up next to the Cable Loss button on the interface When enabled any output level in the output level textbox is offset by the cable loss value For example if a cable connecting the device has 1 2 db of loss associated with it enter this value in the Cable Loss Setting window If you then set the output level of the SR5500 to 50 dBm the actual level at the RF output port of the SR5500 would be set to 48 8 dBm but the level at the Unit Under Test would be 50dbm SPIRENT inspires innovation Communications CHAPTER TWO OPERATION REFERENCE 53 Channel 1 Cable Loss Setting M Enable Channel 1 Cable Loss Correction SR5500 Output Power Cable Loss 120 dB Output Power y Cable Loss d SR53500 Output Power Output Power Power measured atthe Power measured atthe 5R5500 output connector Device Under Test x Le Figure 2 45 Cable Loss Setting Window 2 7 1 12 Adjusting the RF Port Phase Correction Factors The SR5500 has the ability to apply a phase offset to each o
163. l is configured the Channel Model Player enables low level control over playback including the ability to play pause and stop the simulation If changes to the channel model are required the SR5500 real time fading sequence generation enables modifications to take effect instantly This eliminates the need to tolerate the testing delays associated with fading simulators that must pre calculate fading sequences PA 5R5500 TestKit untitled EBX hf SPIRENT nT Chpt CT Cahe Len Channel Mode Dus AF Bend lower Techeoloey UMTS Uei Under Test UE Unit Fans Unocrelsted Une SHASH Wnecerelted States Met Connect Figure 1 3 SR5500 Wireless Channel Emulator Graphical User Interface With the standard instrument configuration equipped with 24 independent multi paths the SR5500 delivers performance evaluation beyond the minimum performance requirements associated with 3G technologies such as CDMA2000 and WCDMA and with evolving Wireless LAN standards The SR5500 enables you to program time varying channel conditions which is a critical capability required to properly assess the overall performance of high speed transmission technologies such as 1xEV DO 1xEV DV and WCDMA HSDPA that employ adaptive modulation and coding schemes 4 SPIRENT sessions OTT Ca ors CHAPTER ONE INTRODUCTION 9 1 2 SR5500 Applications The SR5500 emulates a wide array of radio channel conditions ranging from indoor
164. l of the given unit Of 0 No overload since last cleared On 1 Overload has occurred since last cleared UNIT CHAN PATH DELay MODe lt string gt UNIT CHAN PATH DELay MODe Set the Delay Mode for the given path of the given channel in the given unit SPI RE NT nspired Innovation mmumcations CHAPTER SIX COMMAND REFERENCE 181 Parameter RST Resolution 1 to 2 channel ii lt string gt FIXed BDEath The number of paths set to BDeath mode cannot exceed the number of bins set using the CHAN BDEath DBINs command v UNIT CHAN PATH DELay SDELay DMIN lt real gt UNIT CHAN PATH DELay SDELay DMIN Set the Sliding Delay Minimum for the given path of the given channel in the given unit Parameter Range Selection RST Resolution 1 t 4 uni 1 to 2 channel 1 1 1 to 24 path lt real gt O to 2000 us O 0 0001 UNIT CHAN PATH DELay SDELay DMAX lt real gt UNIT CHAN PATH DELay SDELay DMAX Set the Sliding Delay maximum for the given path of the given channel in the given unit Parameter Range Selection RST Resolution TU lt real gt O to 2000 W UNIT CHAN PATH DELay SDELay ORATe lt real gt UNIT CHAN PATH DELay SDELay ORATe Set the Sliding Delay Rate of oscillation for the given path of the given channel in the given unit Param
165. le when the channel mode is set to 4x4 MIMO The DEE feature allows you to change the state of the SR5500 dynamically at specified time intervals The following parameters can be changed e Channel Output Power e AWGN Status ON OFF e C N Ratio e Path Status ON OFF e Path Delay e Relative Path Loss e Rician Line of Sight Angle of Arrival e Rician K Factor e Frequency Shift e Doppler Velocity e MIMO Sub Channel Status ON OFF e MIMO Sub Channel Relative Power e MIMO Sub Channel Phase 2 8 1 Method To create a dynamic profile you must define the Static State of the SR5500 Set up the static non DEE state of the instrument using the TestKit GUI as you would under normal operation This information combined with State 1 of the State Emulation file describes the state of the SR5500 in State 1 of DEE When the path is initially set to Off you can modify the path parameters This is allowed so if the path gets turned on dynamically in DEE the settings for the path are fully defined NOTE While DEE is running non DEE parameters can sot be changed pe SPIRENT mi PMU nce Cons 80 SR5500 USER MANUAL Channel 1 Channel 2 Velocity km h 50 000 Modulation Frequency Shift Hz Ds m Dmin m HSTV eloci Km h T o Fading Doppler Fading Doppler Phase Shift sro to Hz Vel km h Deg 97 86 50 000 197 86 50 000 on am WwW NN E E E E E
166. low level control over channel model playback e Frequency range extends to 6 GHz to cover 802 11a applications e Power meter capable of both continuous and triggered mode ideal for bursty signals like GSM GPRS EDGE and WLAN e Support for Multiple Input Multiple Output MIMO channel configurations 1 3 2 Ease of Use Features The SR5500 simplifies test setup and control with easy to use local and remote interfaces Some of these features include the ability to e Quickly recall industry standard fading profiles from 3GPP 3GPP2 ITU and JTC e Create realistic user defined scenarios using the SR5500 Channel Model Editor providing easy access to emulation parameters e Set the absolute channel output level without the need for external attenuators and calibration This ensures accurate signal levels are always present at the receiver under test SPIRENT mi mmumcations CHAPTER ONE INTRODUCTION 13 e Make real time changes to AWGN with the Interference Editor This eliminates the need to re configure the fading profile significantly reducing test time e Monitor the Power Delay Profile and input output power levels of the SR5500 in real time This provides valuable user feedback on current test conditions e Integrate the SR5500 into automatic test systems using a Windows NET based software API 1 4 SR5500 Guided Tour All SR5500 functionality is controlled through the instrument control softwar
167. lti unit setup you must set the Synchronization Mode to Active The synchronization status is displayed with the unit selection Selected Unit C6 Figure 2 113 Synchronization Status Bar The Correlation Coefficient can be set to Instrument based or System based Instrument based correlation allows you to set the Rayleigh correlation between the two channels within a particular unit System based correlation allows the correlation to be set between channels in different units 2 13 5 Switching between Units When TestKit is controlling multiple units the unit selection tool displays as shown in Figure 2 114 Selected Unit a Channel 2 Relative Path ode Delay Value us Loss dB 0 0000 0 0 Figure 2 114 Unit Selection Tool Tools Units Help 1 es bys elocity km h 50 000 Fading Doppler Fading Doppler Phase Shift Frequency Shift Modulation Hz Vel km h Deg Mode fsatic SR Figure 2 115 Unit Selection Tool 4x4 MIMO Mode To modify or view parameters for a particular unit click the appropriate unit number in this toolbar All of the information in the different views applies to the selected unit L SPIRENT nino PMU nce Cons 102 SR5500 USER MANUAL 2 13 6 Player Functionality When Testhit is controlling multiple units you can set the player to control all units simultaneously or independently If the Synchronization Mode is set to Active pausing or
168. mat to access resources required for building a complete application It is no longer necessary to develop your own drivers The API provides a higher level of functionality than the command set approach and buffers you from the implementation complexities of configuring the unit The SR5500 WCE IAPI is provided in the Dynamic Link Library DLL format which is commonly used by developers and easily integrated into any project A DLL is a collection of small programs that provide access to resources These programs are only loaded into RAM for use when called upon by the application This DLL is released in the form of a NET DLL NET is a Microsoft initiative for next generation software development NET is a language neutral development environment where developed code modules are targeted for the NET Framework rather than for a particular hardware and operating system combination As a result a DLL developed in NET is designed to run on any system supporting the NET Framework This Framework consists of a suite of class libraries and a runtime execution engine for NET based programs NOTE The SR5500 version 1 20 software release has changed the interface to the Spirent API from Spirent WirelessChEmulator to Spirent Gen2 WirelessChEmulator The older interface will be supported for a limited time to support customers with code compiled with the Rev 1 11 API This can be done by installing the binary compatible API New use
169. most applications Power Meter Parameters Unit 1 Unit 2 Unit 3 Channel 1 Measurement Type Continuous v FH dBm 1000 Trigger Threshold Duty Cycle Input Number of Averages 1048576 gt 215 0925 ms v Output amp Interference Ratio Type Calculated v Number of Averages Channel 2 Measurement Type Continuous 7 dBm 100 0 ze Trigger Threshold Duty Cycle Input Number of Averages 1048576 gt 215 0925 ms X Output amp Interference Ratio Type Calculated v Number of Averages Figure 2 38 Power Meter Parameters Window You can configure the Power Meter in Continuous or Triggered mode If you know the duty cycle of the signal enter the value and the Power Meter makes the appropriate offset for both the input and output measurements Refer to Section 3 10 on page 128 for more details on the Triggered Mode For example if the input signal is a half rate signal on only half the time you can set the duty cycle parameter to 50 This setting only impacts the measurement in Continuous mode p di SPIRENT ie LOT aCe CS 50 SR5500 USER MANUAL In Continuous mode the Power Meter constantly triggers and measures the signal In Triggered Mode the Power Meter measures the signal when the input power is detected over the Trigger Threshold When the Power Meter is set to Continuous you have the choice of setting the output Power Meter type to Calculated or
170. mumcations CHAPTER FIVE REMOTE PROGRAMMING INTERFACE OPERATION 149 START Serial Poll Read Response Yes ERROR Status 00H lt p Illegal Status Yes Send Query Serial Poll No ERROR Illegal Status Yes Figure 5 5 Typical Bus Controller Flowchart Sending GPIB Query ee SPIRENT adinin Communications 150 SR5500 USER MANUAL Polling for a Response The information in the next three sections is provided for reference only The IEEE 488 1 specification outlines how the GPIB bus and controller hardware must behave Everything in the following section happens automatically when using a GPIB interface card GPIB integrated circuit or SR5500 TestKit The controller must conduct a serial poll to receive a command response from SR5500 Testhit The following example shows the typical GPIB sequence required to achieve a serial poll of SR5500 TestKit The actual bus sequence may be different e ATN active e UNT UNTalk e UNL UNListen e SPE Serial Poll Enable e MTA SR5500 TestKit My Talk Address e Controller programmed to listen e ATN inactive e SR5500 TestKit sends status e ATN active e SPD Serial Poll Disable e UNT UNTalk Always conduct a serial poll before sending a command to the unit If it has a pending message to send sending another command causes the pending message to be lost Sending Commands to SR5500 TestkKit The following example
171. n TRIGgered SUITe DEE TYPe SUITe ERR n SPIRENT inspired inavation Communications CHAPTER SIX COMMAND REFERENCE 155 SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe SUITe LOAD lt string gt NUMUnits SAVE lt string gt SYNChronize UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT UNIT CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN ASTatus CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN CHAN AABOTE BAUToset BDEath BDEath BDEath BDEath BDEath BYPass BYPass DBINs lt real list gt DBINS NUMBins SDURation lt real gt SDURation OFF ON CBLLoss lt real gt CBLLOss CFACtor lt real gt CFACtor CLROVerload F
172. n setting up a 4x4 setup SPIRENT taspices movstion Communications 38 SR5500 USER MANUAL 2 4 Using the Test Assistant The Test Assistant is a powerful feature that simplifies setting up the SR5500 for tests based on industry standards 2 4 1 Accessing the Test Assistant To access the Test Assistant select Tools gt Test Assistant or click the Test Assistant icon t on the toolbar The Test Assistant window displays as shown in Figure 2 18 For a detailed example on using the Test Assistant refer to Section 1 5 on page 18 Test Assistant Unit 1 Unit 2 Unit 3 Unit 4 C Do not overwrite settings in the channel editor Technology UMTS z Use the following standard fading profile Unit Under Test UE Select Band and Channel Number Band Operating Band 1 v RF Channel Number 10563 F1 Movina Propaaation Case 2 3 paths 3 km h path Ons 0 dB Carner Frequency MHz path2 976ns OdB path3 20000ns 0 dB C Select Carrier Frequency Figure 2 18 Test Assistant Window 2 4 2 Changing the Carrier Frequency The Test Assistant allows you to enter the exact carrier frequency in MHz or you can let the program set the carrier frequency based on the application To set the carrier frequency directly click the Select Carrier Frequency button Enter the Carrier Frequency in MHz in the textbox as shown in Figure 2 19 Channel Humber Select Carrier Frequency rt Carer Frequ
173. n the Carrier Frequency is changed SR5500 TestKit calculates the Doppler to maintain the currently set Velocity _ S P E IT nspired innovation Comin WNUMI Cal ons 64 SR5500 USER MANUAL 2 7 2 5 Spectrum Shape The SR5500 allows you to select the Fading Spectrum Shape for each path with independently set status You can only set the Fading Spectrum Shape for paths that are set to Rayleigh or Rician Use the column labeled Fad Spec Shape in the grid or the Spectrum Shape list box in the Path Modulation Parameters window 2 7 2 6 Rician Parameters The following path parameters apply when the Path Status is set to Rician To adjust the parameters in the grid or in the Path Modulation Parameters window use the name shown in parenthesis below e Line of Site Angle of Arrival LOS AOA e Line of Site Doppler LOS Doppler e Rician K Factor Rician K The LOS AOA and LOS Doppler are dependent Setting one of these parameters causes the other to be reset to the appropriate calculated value The Carrier Frequency LOS AOA and LOS Doppler parameters are interdependent When the Carrier Frequency is changed SR5500 TestKit calculates the LOS Doppler to maintain the currently set LOS AOA 2 7 2 7 Modulator Parameters Each path can have an independent Frequency Shift and Phase Shift value To adjust the phase shift use the Phase Shift column in the grid or the Phase Shift textbox in the Path Modulation
174. n unit is valid for AWGN correlation Parameter Range Selection RST Resolution 1 to 4 1 1 CORRelation UNIT CHCorrelation lt real list gt CORRelation UNIT CHCorrelation Set the Channel Correlation for a given unit This command should be used only after the CORRElation TYPe is set to INSTrument If CORRelation UNIT IMODe is set to COMPLex the correlation would be set to R1 R2j Otherwise the correlation will be set to R1 Parameter Range Selection RST Resolution lt real list gt R1 R2 0 00 0 01 Oto 1 CORRelation UNIT CHCValid Query whether the current setup of the given unit is valid for channel correlation Parameter Range Selection RST Resolution 1 to 4 1 1 CORRelation UNIT IMATRix PATH lt real list gt CORRelation UNIT IMATRix PATH Set the Channel Correlation Parameters for a given path in the system This command is Supported only for units in 2x2 MIMO or 4x4 MIMO mode when the correlation is Instrument Based and not System Based This is supported only for Unit 1 3 in 4x4 MIMO mode and not for Unit 2 4 SPI mm mcations 168 SR5500 USER MANUAL Parameter Range Selection RST Resolution lt real list gt RO R1 R2 R11 0 00 0 0001 1 to 1 2x2 MIMO Mode Index Parameter Index Parameter Ro Juin uni Real re uma vint Real R1 U1h21_U1h11_Imag R7 U1h22
175. nal source if desired SPIRENT mi PMU nce Cons 98 SR5500 USER MANUAL 2 13 2 Unidirectional 4x4 MIMO Before using TestKit to control a 4x4 MIMO setup connect the units with the synchronization and data bus cables The synchronization cable allows correlation for the 4x4 system and the data cables allow the input from one unit to be fed to the other unit The table below provides the required connections UNIT PORT UNIT PORT TYPE 1 10 MHz OUT gt 2 10 MHz IN BNC 1 SYNC OUT gt 2 SYNC IN MDR Digital Cable 1 DBB OUT gt 2 DBB INT MDR Digital Cable 2 DBB OUT gt 1 DBB INT MDR Digital Cable 10M REF OUT DIGITAL DEB MDR DATA SR5500M OUT SR5500M UNIT 1 DIGITAL UNIT 2 DEA MDR DATA DIGITAL SYNC MDR SYNC OUT Figure 2 109 Unidirectional 4x4 MIMO Setup When a 4x4 MIMO unit is being controlled with other units connect the units as described in Section 2 13 1 2 13 3 Bidirectional 4x4 MIMO Before using TestKit to control a Bidirectional 4x4 MIMO setup connect the four units with the synchronization and data bus cables The synchronization cable allows correlation to be setup for the 4x4 system and the data cables allow the input from one unit to be fed to the other unit In this setup Units 1 2 and 3 4 can be configured to be uncorrelated or fully correlated correlation of O or 1 The following table shows the required connections ume port uvr
176. ncy Shift HZ Ds m Dmin m Shift Period sec HST Velocity Km h fd Hz Figure 2 66 Frequency Shift in High Speed Train Mode S P E JT nspired innovation Co PMU Mca Corns 66 SR5500 USER MANUAL Unit 1 Channel 1 Unit 1 Channel 2 Velocity km h 50 000 Frequency Shit Frequency Shift Hz Ds m Dmin m Vebatty Km h Shift Penod sec 7 200 fd Hz Figure 2 67 Frequency Shift More Button Unit 1 Channel 1 Path 1 High Speed Train Frequency Shift Parameters Ds 2 mn gt l Dmin m Frequency Shift Hz Ds m 3000 fd Hz 1150 amp mh Dmin m 2 0 v kmh 300 0 Hz Time s fd Maximum Doppler Frequency Hz Peak Doppler Variation 2297 35 Hz s v Velocity of the train km h Ds 2 Initial Distance m of the train from the BS Dmin BS railway track distance m Frequency Shift Period 72s Maximum Frequency Shift 1149 90 Hz ak Figure 2 68 High Speed Train Frequency Shift Parameters Window All the parameters presented in section to the left of the High Speed Train Frequency Shift Parameters window display in the grid The parameters displayed in the right half of the window update based on the entered values 2 7 2 10 Fixed Delay To set a path for a Fixed Relative Delay set the Delay mode to Fixed by selecting it from the Delay Mode column To set the amount of Fixe
177. ng DEE when the player is stopped there is a single static path from the input to the output with Os delay the output powers is set to the power in State 1 When the player starts playing the path parameters and the output levels vary based on the values for that state Refer to Section 2 2 2 6 on page 31 for details on how to play pause and stop When you click the Play button B the fading engine begins and the DEE engine begins cycling through user states P SR5500 TestKit untitled ES View Configuration Execute s Units H a O D E G Sh B ake K amp es bef Selected Unit oa SPIRENT Dynamic Environment Emulation All Units Emulation File Ciani Editor Unit 1 C Vivek 5500 GUINDEE State Files R2 3 R2 3_Dual_13 States_CH1 P1_Doppler Vel stb Er Unit2 C Viveki5500 GUNDEE State Files R2 3 R2 3_Dual_13 States_CH1 P1_Doppler Vel stb Er ca By Arent Trigger Mode Playback Mode Free Run New Emulation File Triggered Play Eran Disable Playback Contrds Elapsed Time KUIMILIKI PAN Carrier Overload Freg MHz Os ces RES of Channel Mode Dual RF Band Lower Technology None Unit Under Test Unknown Unit Fading Uncorrelated Unit AWGN Uncorrelated Enabled DEE Figure 2 102 Dynamic Environment Emulation DEE View Playing a SPIRENT inspires innovation Communications CHAPTER TWO OPERATION REFERENCE 89 SR5500 TestKit untitled DER Units z 2 D se
178. ni 1 to 2 channel 1 1 UNIT CHAN BAUToset Begin an Autoset on the given channel of the given unit Parameter Range Selection RST Resolution CS ES EE 1 to 2 channel UNIT CHAN BDEath DBINs lt real list gt UNIT CHAN BDEath DBINs Set the Birth Death Delay Bins for the given channel of the given unit M ee S PI RENT spires innovation cations 174 SR5500 USER MANUAL Parameter Range Selection 1104 un 1 to 2 channel Resolution lt real list gt R1 R2 R64 O to 2000 us UNIT CHAN BDEath NUMBins Query the number of active Birth Death delay bins for the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 UNIT CHAN BDEath SDURation lt real gt UNIT CHAN BDEath SDURation Set the Birth Death state duration for the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt real gt 0 001 to 60 s 0 001 0 001 UNIT CHAN BYPass lt bool gt UNIT CHAN BYPass Enable or disable the Bypass mode of the given channel of the given unit Parameter Range Selection RST Resolution 1 to 4 unit 1 1 1 to 2 channel 1 1 lt bool gt OFF ON OFF UNIT CHAN CBL
179. o each and every API command sent it slows the rate of execution of the program Use only when necessary j SPIRENT mu mmumcations CHAPTER Four INSTRUMENT API 135 4 5 2 The API Front Panel Window Components 4 5 2 1 Main Window The main window displays some general information about the state of the API and of the connected SR5500 The current frequency for each channel displays along with the state of the set and measured input and output levels The Bypass state also displays Fle Wew Execube Hels EMULATIONSTATE Gi pd CHANNEL CHANNEL 1 Frequency Mhel FET Frequency Hha fanna TH igu Lari Get Inge Level Bir jan iam Mia Heasued ingui Level atid a Set Digi Level ana kim Meaound Duin Level gm Piatt of Lact Daid Dei Cogini Pare Coupled Penamaior Trace Leg Date BRI en AM ers Figure 4 1 SR5500 API Front Panel Window NOTE The Measured 1 0 Levels and the Overload status are not updated continuously They display the result of the most recent query of these properties by the program Since monitoring these properties requires a query to the instrument it is not desirable for the API Front Panel to compete with your code for control of the instrument To update these values manually select Execute gt Refresh SR5500 API Front Panel File view NET Refresh Clear Driver Trace Log EMUL Clear Coupled Parameter Trace Log CHANNEL Q
180. ocated on the lower left corner of the rear panel This receptacle also contains the fuses for the unit 6 9 O AUX S and AUX E Available on SR5500M Only RJ 45 Type Connectors Reserved for future use SPIRENT mi PHM LCC rs 18 SR5500 USER MANUAL 1 5 Quick Start Procedure To prepare the SR5500 for initial operation perform the following steps Refer to the table below to determine the number of cartons in the SR5500 shipment 1 Unpack the SR5500 shipping cartons There should be two shipping cartons one containing the SR5500 and accessories and the other containing the PC An optional third carton contains the SR5500 6 GHz EX RF Converter and accessories The cartons should contain a packing list detailing all the items in the cartons Make sure that all parts listed on the packing list are contained in your SR5500 shipping cartons c Save the shipping cartons and packing materials until you have completed the system installation and initial check If you must return equipment please use the original box and packing material d Check each item for physical damage If any part appears to be damaged contact the Spirent Communications Customer Service department 2 Plug one end of the supplied AC power cord into the rear panel and plug the other end into your AC source Repeat as necessary 3 Connect supplied loop back cables from LO IN CH1 to LO OUT CH1 Repeat for LO C
181. of new air interface technologies physical layer modulation schemes channel coding and mobility algorithms must be evaluated and compared The SR5500 can analyze the performance of competing technologies by providing repeatable test conditions across test campaigns It is capable of sophisticated channel models low signal distortion and can accommodate the evaluation of next generation wide bandwidth signal formats 1 2 1 2 Design Verification Test Comprehensive evaluation of reference designs and commercial products against original design objectives is a critical phase in the product realization process You can configure the SR5500 to emulate a wide range of radio propagation environments with precise control over channel conditions for performance breakpoint analysis With an easy to use software Application Programming Interface API the SR5500 easily integrates into automatic test systems capable of performing a large number of test cases in minimal time 1 2 1 3 Acceptance Conformance Test Before deployment commercial products must typically undergo a series of acceptance and conformance tests based on minimum industry performance standards The SR5500 User Interface features a Test Assistant that makes it easy to emulate propagation conditions defined in various industry test specifications These propagation conditions are defined by ETSI 3GPP 3GPP2 and ITU 1 2 1 4 System Performance Test Once deployed to the field the
182. ogram Message Unit if the result from a previous message has not been read 2 Send the command or query to SR5500 TestKit After a query is sent execute a serial poll and then read the query response from SR5500 TestKit In the LAN CR LF protocol it is not necessary to check for pending responses The unit automatically queues any responses and error messages In the GPIB protocol responses must be explicitly read back before another query can be sent In both modes errors must be explicitly requested using the ERR query A common practice is to append a ERR query after each command For example CHANT PATH1 DELay 10 ERR Notice that a semicolon separates the two actions and a colon indicates that the following message should start from the root of the command tree By sending the above message and reading back the response you will See any errors that might have arisen Default Commands and Headers Many commands queries and command groups have defaults associated with them For example under each header there is a default command query or another header which does not have to be explicitly stated in order to be understood For example the CHAN1 PATH1 DELay header has many commands under it The VALue command is the default command Because of this the following two commands have the same meaning SPIRENT sm THU CaCl ons 144 SR5500 USER MANUAL CHAN PATH1 DELay VALue 10 CHA
183. on 4 3 Development Environments The API is released in the form of a NET DLL dynamic link library and is intended for use in a NET programming environment such as Visual Studio NET which supports development languages such as Visual Basic NET Visual C NET and Visual C NET Use of the API requires installation of the NET framework The DLL can also be used in a COM Common Object Model Microsoft s pre cursor to the NET Framework development environment such as Visual Studio 6 0 LabView LabWindows CVI etc 4 4 API Usage Example The SR5500 API is intuitively designed to facilitate a quick ramp up for developers adopting the API To illustrate the ease of use of the SR5500 API for configuring the system the following sample code extract is provided in VB NET The example illustrates the intuitive hierarchical structure the simplicity of the interface and the descriptive naming convention employed SPIRENT mi mmumcations CHAPTER FOUR INSTRUMENT API 133 This example configures a single RF channel with 2 Rayleigh faded paths the second path being delayed by 2 us Comments are included to explain the upcoming line of code instantiate fader object Dim myFader As New Spirent Gen2 WirelessChEmulator SR5500 Clear away any currently allocated channel resources myFader ClearChannels create 1 RF channel RFlinput to RF1 output assign all paths to this channel AddChannel myFader ChanInputS
184. ond form is the short form of the full implementation of the query The third example takes advantage of the defined default sub mnemonics to shorten the query text 5 4 7 Error Message Format The ERR Query reports any errors that may have occurred Errors are reported in the form ERROR_NUMBER ERROR_DESCRIPTION The following is a list of possible error responses e O No error e 256 File name not found The specified file does not exist e 2 API initialization failure Unable to initialize the API e 3 SR5500 communications failure Unable to communicate with the SR5500 hardware e 4 SR5500 connection failure Unable to connect to the SR5500 hardware e 5 File load failure Unable to recall WCE File e 6 File save failure Unable to save WCE Flle 222 Data out of range Parameter data out of range e 224 Parameter error Parameter data not understood e 100 Command error Command not understood e 200 Execution error Unable to execute command e 11 Autoset in progress Unable to execute command because autoset is in progress e 12 DEE in progress Unable to execute command because DEE is in progress e 13 DEE compile in progress Unable to execute command because DEE compile is in progress SPIRENT mi mmumcations CHAPTER FIVE REMOTE PROGRAMMING INTERFACE OPERATION 147 5 5 Transmission Layer Protocols SR5500 TestKit provides two remot
185. ourceType RF1 ChanOutputSinkType RF1 24 set a 900MHZ Carrier frequency in Hz Note that channels are indexed from 0 myFader Channel 0 CarrierFrequency 900000000 set input level to 15dBm and output level to 45dBm myFader Channel 0 ChanInputLevel 15 myFader Channel 0 ChanOutputLevel 45 Enable 2 paths Note that paths are indexed from 0 also myFader Channel 0 Path 0 IsEnabled True myFader Channel 0 Path 1 IsEnabled True enable Rayleigh Fading on both paths myFader Channel 0 Path 0 ModType ModulationType Rayleigh myFader Channel 0 Path 1 ModType ModulationType Rayleigh set the Doppler Velocity to 8km h on both paths myFader Channel 0 Path 0 FadingDoppVelocity 8 myFader Channel 0 Path 1 FadingDoppVelocity 8 set delay of the second path to Fixed delay with a value of 2us myFader Channel 0 Path 1 DelayMode DelayModeType Fixed myFader Channel 0 Path 1 Delay 2 Connections Setup set IP address myFader Comm IPAddress 192 168 0 7 call connect method to connect to unit and have the above configuration automatically downloaded myFader Comm Connect As can be seen from this simple example the API is hierarchically and intuitively structured with descriptive naming conventions to allow for easy adoption by developers _ SPIRENT inspires innovation Communications 134 SR5500 USER MANUAL 4 5 API Front Panel The SR5500 API include
186. pends upon set Center 50 0 001 frequency km h mmumcations CHAPTER SIX COMMAND REFERENCE 183 UNIT CHAN PATH FSHAPe lt string gt UNIT CHAN PATH FSHAPe Set the Fading Spectrum Shape for the given path of the given channel in the given unit Parameter Range Selection RST Resolution CE EE 2 ror oo pooo lt string gt C3DB a ROUNd FLAT R12DB UNLIT CHAN PATH FSHift VALue lt real gt UNIT CHAN PATH FSHift VALue Set the Frequency Shift for the given path of the given channel in the given unit Parameter Range Selection RST Resolution fe twa EE EE EE Hot 2 lt real gt 2000 to 2000 HE 0 01 Depends upon the Doppler frequency UNIT CHAN PATH FSHift MODE lt string gt UNIT CHAN PATH FSHift MODE Set the Frequency Shift Mode Parameter Range Selection RST Resolution lt string gt FIXed HST FIXed UNIT CHAN PATH FSHift HST INIDS lt real gt UNIT CHAN PATH FSHift HST INIDs Set the High Speed Train Ds m for the given path of the given channel in the given unit Parameter Range Selection RST Resolution EURE lt real gt 1 to 2000 M r S PI RENT ses novation cations 184 SR5500 USER MANUAL UNIT CHAN PATH FSHift HST DMIN lt real gt UNIT CHAN PATH FSHift HST DMIN Set the High Speed Train Dmin m fo
187. performance of wireless equipment is analyzed and optimized To accelerate the optimization process it is necessary to recreate challenging field scenarios on a controlled repeatable test bed By utilizing both RF channels in the instrument you can configure the SR5500 for bi directional full duplex performance evaluation You can also program the SR5500 to play back field conditions repeatedly enabling the adjustment of algorithms until optimal performance is realized Communications CHAPTER ONE INTRODUCTION 11 1 2 2 Evaluating Radio Access Technologies The SR5500 possesses the capabilities necessary to evaluate a broad range of local and wide area wireless network technologies With frequency coverage up to 6 GHz the SR5500 covers all deployment frequency bands Supported technologies include e GSM GPRS EDGE e WCDMA e WCDMA HSDPA e LTE e CDMA2000 1x e CDMA2000 1xEV DO e CDMA2000 1xEV DV e Location Based Services e 802 11 a b g e 802 16 WiMAX e HiperLAN 1 2 3 Evaluating Air Interface Performance Radio access technologies possess layers of algorithms designed to mitigate the harsh effects of radio propagation and to deliver seamless mobility The SR5500 possesses the critical features required to stress test air interface performance and to identify opportunities to improve product design The SR5500 can be used to evaluate and improve the performance of e Baseband Demodulation e Rake
188. pplication on the provided PC if needed This section describes the basic operations of SR5500 Testhit For more detailed information about the features refer to Chapter Three on page 107 NOTE TestKit first starts in Local Mode and does not control the SR5500 Refer to Section 2 2 1 on page 28 for more information NOTE The SR5500 features a powerful Player function that allows greater control over the fading emulation The Player defaults to the Stopped position To enable the channel emulation click the Play button in the Player controls 2 2 Operational Overview To start SR5500 Testkit from the Windows Start Menu click the SR5500 TestKit icon You can also Start SR5500 Testhit by clicking the program icon on the Windows desktoplal The SR5500 Testkit Main Window displays as shown 28 SR5500 USER MANUAL 6 SR55 00 TestKit untitled a ER File View Configuration Execute Tools Units Help S TETTERE Gaas i SPIRENT Views Unit 1 Channel 1 NV Unit 1 Channel 2 Velocity km h so 000 f 3 cditsr reading Doppler F ading Doppler Phase Shift Frequency Shii se i haa Modulation Hz Vel kmh Deg Mode Frequency Shaft It Channel Player nterarerce Editor Instrument HAUD af co leo Lo oo Too To Tu To lo To lo lu lSlesicieicisislisiselsle A e ALATA A a l a Aa Aya gt Li Le 7 Power dn
189. ption 9 Select the HT2 100 km h 12 path model from the profile list 10 Click the OK button The Channel Editor is now set to the test case Hilly Terrain 12 path model used for 3GPP test standards a SPIRENT inspires innovation Communications CHAPTER ONE INTRODUCTION 23 Channel 1 Overload Input Frs AW 6 0 utput 7 50 AW Adjust Carrier D Cable Loss Figure 1 19 Sample Channel Editor with Correct Values Entered 11 Set the Base Station Emulator Output Power to 10 dBm 12 Program the Output Level to 65 dBm as shown in Figure 1 20 Power dBm Set Input 100 AV Output 650 AW Figure 1 20 Output Level Meter 13 Click the Autoset button in the Channel Editor as shown in Figure 1 21 Autoset Figure 1 21 The Autoset Button 14 Click the Channel Player icon to get a channel representation of the fading profile generated by the SR5500 as shown in Figure 1 22 Channel Planer Figure 1 22 The Channel Player Button EE SPIRENT inspired innovation communications 24 SR5500 USER MANUAL SPIRENT Figure 1 23 Sample TestKit Window 15 Click the Play button to start the Fading Emulation You are now ready to perform a Mobile Performance Test 1 8 Version History The following information provides a Summary of feature releases for the SR55500 since the version 2 00 release To upgrade to a particular version the SR5500 instrum
190. r between the LOS path and the multi path The SR5500 provides access to both the LOS arrival angle specified as the AOA expressed in degrees and the LOS path to multi path power ratio specified as the K factor expressed in dB Changing the LOS arrival angle will move the relative location of the direct path with respect to the faded spectrum by changing the static Doppler shift of this component This Doppler shift is set according to the following equation Doppler direct component Doppler faded component X cosine LOS arrival angle The K factor setting then controls the relative power of the direct path and the multi path and has a valid range of 30dB faded spectrum will dominate to 30dB LOS signal will dominate SPIRENT mi mmumcations CHAPTER THREE TECHNICAL REFERENCE 117 An example configuration of Rician fading may have an angle of arrival of the LOS signal path set to be 45 resulting in a Doppler shift that is O 707 of the maximum Doppler shift of the Rayleigh distributed signal classical Doppler spectrum Furthermore if the signal power of Rician fading is split equally between the LOS and multi paths where the power envelope of the multi paths combine to from a Rayleigh distribution this corresponds to a K factor setting of O dB A theoretical power spectral density for this example of Rician fading is shown in Figure 3 12 and a measured spectral density is shown in Figure 3 13 f O 7f SIS
191. r the given path of the given channel in the given unit Parameter Range Selection RST Resolution CN ET lt real gt 1 to 200 UNIT CHAN PATH FSHift HST VELocity lt real gt UNIT CHAN PATH FSHift HST VELocity Set the High Speed Train Velocity km h for the given path of the given channel in the given unit Parameter Range Selection RST Resolution TE lt real gt 10 to 500 UNIT CHAN PATH FSHift HST MAXDoppler lt real gt UNIT CHAN PATH FSHift HST MAXDoppler Set the High Speed Train fd Hz i e maximum Doppler for the given path of the given channel in the given unit Parameter Range Selection RST Resolution 1104 un 1 to 2 channel 1 to 24 path el O to 2000 coe a Depends upon the Doppler frequency UNIT CHAN PATH FSHift HST PERiod Query the period s for the High Speed Train frequency shift for the given path of the given channel in the given unit in seconds Parameter Range Selection RST Resolution EE ES 1 1 to 2 channel 1 to 24 path 1 i SPIRENT inspires innovation catons CHAPTER SIX COMMAND REFERENCE 185 UNIT CHAN PATH LOGNormal RATe lt real gt UNIT H CHAN PATH LOGNormal RATe Set the Log Normal rate for the given path of the given channel in the given unit Parameter Range Selection RST Resolution C
192. receiver can arrive having traveled over many different paths through the radio channel On its way to the receiver a transmitted signal may take the direct line of sight path or may bounce off reflecting surfaces before arriving at the receive antenna Since these multiple copies of the original transmitted signal travel different distances they arrive at the receiver staggered in time with different average power levels The impulse response of the radio channels is used to characterize what predominant paths are present between the transmitter and receiver at a given time Using the impulse response method a short transmit signal is broadcast through the radio channel and multiple copies of the original signal are captured and measured at the receive antenna The result is displayed in the form of a Power Delay Profile An example Power Delay Profile is shown in Figure 3 2 This example shows four copies of the original transmitted signal arriving at the receiver The Y axis describes the relative power of each of these paths at the receive antenna The X axis describes the relative time difference between the paths as they arrived at the receiver Since the radio channel is dynamic the amplitude and relative delay characteristics of the paths in the Power Delay Profile vary over time The following sections describe various characteristics of the paths illustrated by the radio channel s Power Delay Profile f SPI RE NT nspir
193. rminate its response message with a CARRIAGE RETURN or CARRIAGE RETURN LINE FEED The unit signals the end of a response message by raising EOI while it sends the last character of the response S P R E JT inspired Innovation Communications 152 SR5500 USER MANUAL _ 7 SPIRENT inspires innovation Communications 6 RPI Command Reference This section is designed to help those who are already familiar with SR5500 TestKit command set to easily find and use commands The SR5500 TestKit Command Reference provides a complete description of each command group and all commands within each group You should be thoroughly familiar with Chapter 3 before attempting to use SR5500 TestKit remote commands The Remote Operation section provides the details of SR5500 TestKit command message format and syntax 6 1 Conventions to Specify Commands The SR5500 TestKit Supports commands and queries Commands allow you to set parameters and execute actions while queries allow you to obtain information from the unit Commands are issued to SR5500 TestKit in the format smnemonici mnemonic2 mnemonicn parami paramn It is not necessary for commands to have any parameters Some commands simply execute a function and do not require any parameters Query commands require the format smnemonicil mnemonic2 mnemonicn The SR5500 TestKit will provide the requested information as respl Most commands have associated queries as
194. rmware already installed It may be necessary to download Firmware updates made available from Spirent Communications This section details the steps to update the Firmware when necessary NOTE The firmware upgrade procedure should only be performed when there is a direct Ethernet connection between the controller PC and the SR5500 either through a cross over cable or using a hub The firmware upgrade may not function properly over a network using a router 2 10 1 Starting the Download Successful installation of a new version of SR5500 Testhit automatically installs updated Firmware files in the download directory on the Controller PC Once the files are properly located on the controller PC run TestKit and connect to the SR5500 To start the download in SR5500 Testhit select Help gt Firmware Upgrade TestKit must communicate with the SR5500 to detect the current Firmware version The Firmware Upgrade window displays as shown in Figure 2 105 Firmware Upgrade Please select the desired unit that you want to upgrade Unit Number 11 IP Address 10 16 160 116 Firmware Information Firmware Version Available 02 00 34 Firmware Version In Use 02 00 35 Note The entire upgrade process may take up to 10 min during which time the cancel button will be disabled Click Upgrade button to proceed with upgrade or click Cancel to exit Please select the IP ofthis PC from the list of found IPs 0 16 1 2 Figure
195. rofile and their location along the delay spread X axis would remain constant over several meters In many cases the impulse response of a radio channel is averaged over this small distance which translates into a short period of time with mobility to provide a static or wide sense stationary view of channel conditions As a mobile wireless terminal moves over a wider area the shape and characteristics of the Power Delay Profile change dramatically SPIRENT mi munications 110 SR5500 USER MANUAL SPIR Power k NX Relative Delay Spread Figure 3 3 3D Plot Showing Time Varying PDP Modern wireless communications systems must adapt to these dramatic changes to continuously mitigate the impact of multi path delay spread To accurately evaluate the performance over a time varying Power Delay Profile a fading emulator must be able to emulate the time varying changes in the paths delay characteristics The following sections describe popularly employed models to emulate dynamic delay spread 3 4 1 Sliding Relative Path Delay Popular channel models feature Power Delay Profiles with time varying delay spread to evaluate a receiver s ability to adapt to dynamic changes in the radio environment caused by mobility These models may specify the use of paths with sliding delay characteristics 3GPP test specifications define Moving Propagation channel models that utilize paths that possess sliding delay with a sinusoidal
196. rs and users in development environments should switch over to the new API immediately and not install the binary compatible version 132 SR5500 USER MANUAL 4 2 Benefits and Features The SR5500 Instrument API is an advanced Application Programming Interface for remote control of the SR5500 providing substantial advantages over a traditional remote command interface Some of the benefits of the API are e Allows for easy integration of SR5500 control into proprietary instrument control applications with all the common benefits of development with a DLL in an integrated development environment e Simplifies the control of a very complex system with the provision of simple control interfaces which intuitively group parameters and functionality by type while hiding the complexities of parameter interdependencies control optimization algorithms communication details etc e Provides extensive online Hyperlinked help resources Specific SR5500 control features include e Intuitive partitioning of system channel and path configuration resources e Range and type checking for all parameters e Structured error handling and logging e Subscribe able event structure for parameter dependency warnings etc e Advanced control mechanisms such as file recall e Driver trace utility for develooment debug e Driver and instrument identity and option resources e File recall functionality for one step system configurati
197. s ROMEO Palih LOSS a ee renan ae ban en 112 BOs FSE a E a eo 112 3 6 1 Rayleigh Fading Amplitude Distribution ccsscccsescesssccnscccsscecescesescees 113 3 6 2 Rician Fading Amplitude Distribution ss 116 3 6 3 Fast Fading Power Spectrum Shapes ss 118 3 7 Static Amplitude Channel Effects 118 3 7 1 Frequency Shift Static Doppler ss 119 3 7 2 High Speed Train Frequency Shift ss 119 Dea DICH GP 16 CT OO EL LR 120 3 8 Slow Shadow Fading essesesososososesessssssosososososososescssososssososososos 121 3 9 Additive White Gaussian Noise AWGN interferer cccceccescese 123 7 DO POWER MOOT ccustaacuscssaadsmsmeansasueacasyaeuneenensedeueawsunts a en sen 128 DSMEC API RP 131 Al 0 1 2 4 le EPP E EEA EE E 131 4 2 Benefits and Features serrer 132 4 3 Development Environments ss 132 AA API USB EXAMPLE de ae ane esse ne 132 BAB API FROME PNO nee eee eda een de Dana ec set ee 134 2 5 1 INVOKING the API FONE PONE ws cccvansecsensvwnsardoasecorcenassdenvacessevecdewacssassncoese 134 4 5 2 The API Front Panel Window Components ss 135 mm SPIREN nspired innovation Communications IV SR5500 USER MANUAL 4 6 Further Information ss 138 5 Remote Programming Interface Operation 139 Beli OV CUNI CW E EEE O 139 5 2 Remote Control FEALUI ES sncdicsacsandadisvcscoscetesecnetencseausesabesasyaceacssceneses 139 5 3 Configuring SR5500 TestKit for Remote Control 140 5 3 1
198. s a utility designed to help verify that the code is configuring the SR5500 properly This utility is called the API front Panel The API front panel displays the current state of the API at any moment in time 4 5 1 Invoking the API Front Panel To invoke the API Front Panel call the following API method MyFader LauchAPIFrontPanel This opens the API Front Panel window NOTE The API Front Panel Window will open in minimized mode This keeps the API Front Panel from taking up screen real estate until it is required 4 5 1 1 How the API Front Panel Works The API Front Panel automatically updates any parameter that you change in the code If a property is changed the API will send an event to the API front Panel which will update this property on its GUI You can set and view many of the properties viewable in the API Front Panel This feature allows you to change these values while in a breakpoint or when deemed necessary This feature should be used with caution as it is possible to cause issues if the code is running while making changes to the API Front Panel Since the API Front Panel generally responds only to changes in the API the measured power levels and overload conditions do not update unless you query these values in the code The values displayed are the result of the last query Use the Refresh command in the API Front Panel to force a query of these items Since the API front panel needs to respond t
199. s to their default settings SUITe Subsystem The SUITe commands are used to control the overall system function BAND lt string gt BAND SPIRENT sm mmumcations 160 SR5500 USER MANUAL Selects the RF Frequency Mode of the system Parameter Range Selection RST Resolution lt string gt LOWer MIDdle UPper LOWer Lower Band 400 2700MHz Middle Band 3300 3850MHz Upper Band 4100 6000MHzZ Middle and Upper Band are not supported when a unit in a suite is in 4x4 MIMO mode CORRelation MATRix ALLpaths lt real list gt CORRelation MATRix ALLpaths Sets the channel correlation parameters for all paths in the system This command should be used only after the CORRElation TYPe is set to SUITe and the CORRelation MODe is set to ENVelope COMPonent or COMPLex This command is not supported for a suite with units in 2x2 or 4x4 MIMO mode If CORRelation MODe is set to ENVelope or COMPonent the parameters are defined in the following tables Parameter Range Selection RST Resolution lt real list gt 2 UNITS Dual RO R1 R2 R5 0 00 0 01 3 UNITS Dual RO R1 R2 R14 4 UNITS Dual RO R1 R2 R27 2 UNITS Single RO 3 UNITS Single RO R1 R2 4 UNITS Single RO R1 R2 R5 O to 1 f SPI RE NT nspired Innovation mmumcations CHAPTER SIX COMMAND REFERENCE 161 2 UNITS Dual Channel
200. shows the typical GPIB sequence required to send a command to SR5500 Testkit The actual bus sequence may be different e ATN active e UNT UNTalk e UNL UNListen e MLA SR5500 TestKit My Listen Address e Controller programmed to talk e ATN inactive e Controller sends command to SR5500 TestKit and asserts EOI with last command character e ATN active e UNL UNListen Command strings must not be terminated with CARRIAGE RETURN or CARRIAGE RETURN LINE FEED Signal the end of a command message by asserting EOI end of interrupt while it sends the last character of the message f SPI RE NT nspired Innovation MT mmumcations CHAPTER FIVE REMOTE PROGRAMMING INTERFACE OPERATION 151 Some commands require several seconds of SR5500 TestKit processing time While the unit completes most commands in less than one second some commands may require several seconds The controller should conduct serial polls until SR5500 TestKit status is ready Receiving Responses from SR5500 TestKit The following example shows the typical GPIB sequence required to receive a command from SR5500 TestKit Your actual bus sequence may be different ATN active UNT UNTalk UNL UNListen MTA SR5500 TestKit My Talk Address Controller programmed to listen ATN inactive SR5500 TestKit sends data to controller Controller reasserts control when EOI goes active ATN active UNT UNTalk SR5500 TestKit does not te
201. sociated with them For example the command to set the interferer 1 frequency CHANT PATHT DELay 10 0 has a query with the same header and command name CHANT PATHTL DELay 154 SR5500 USER MANUAL 6 1 1 Command Summary IDN OPT RST SUITe BAND LOWer MIDd1le UPper SUITe BAND SUITe CORRelation MATRix ALLpaths lt real list gt SUITe CORRelation MATRix ALLpaths SUITE CORRelation MATRix PATH lt real list gt SUITe CORRelation MATRix PATH SUITe CORRelation MODe ENVelope COMPonent COMPLex SUITE CORRelation MODe SUITe CORRelation TYPe INSTrument SUITe SUITE CORRelation TYPe SUITe CORRelation UNIT AWGNCorrelation OFF ON SUITE CORRelation UNIT AWGNCorrelation SUITE CORRelation UNIT AWGNValid SUITE CORRelation UNIT CHCorrelation lt real list gt SUITE CORRelation UNIT CHCorrelation SUITE CORRelation UNIT CHCValid SUITe CORRelation UNIT IMATRix PATH lt real list gt SUITe CORRelation UNIT IMATRix PATH SUITe CORRelation UNIT IMODe ENVelope COMPonent COMPLex SUITE CORRelation UNIT IMODe SUITe DEE CSTATe SUITe DEE ETIMe SUITe DEE CLOOP SUITe DEE COMPile FILE SUITe DEE COMPile STATus SUITe DEE MODe WRAParound ONCE SUITe DEE MODe SUITe DEE NUMSTates SUITe DEE STATe OFF ON SUITe DEE TYPe FREEru
202. ss 127 004 Ch Correlation Ch Correlation Ch Correlation Ch Correlation AWGN Correlation AWGN Correlation AWGN Correlation AWGN Correlation Figure 2 91 System Parameters View 4x4 MIMO Mode 2 7 6 SR5078 Switch Control The SR5500 is capable of controlling the SR5078 Test Switch This switch is provided with some Spirent Systems products It is not available for use with a stand alone SR5500 system For information concerning the switch operation consult the documentation provided with the Spirent System 2 7 6 1 Accessing the SR5078 Test Switch Control Access the SR5078 Switch Control window shown in Figure 2 92 by selecting Tools gt SR5078 Switch Control from the main menu SR5078 Switch Control Selected Unit fi Status Present Configuration Diversity Close Figure 2 92 SR5078 Switch Control Window M SPIRENT inspires innovation communications CHAPTER TWO OPERATION REFERENCE 79 2 8 Dynamic Environment Emulation This section details the parameters that control the Dynamic Environment Emulation DEE function available through the TestKit SR5500 GUI NOTE Due to the high data rate requirements of DEE it only functions if there is a direct Ethernet connection between the controller PC and the SR5500 either through a cross over cable or using a hub DEE may not function properly over a network using a router NOTE The DEE feature is not currently availab
203. stKit Sample Title Bar SPIRENT ericson PHM LCC rs 30 SR5500 USER MANUAL 2 2 2 2 Menu Bar The Menu Bar shown in Figure 2 5 is located immediately below the Title Bar To display the items in that menu click the menu name or hold down the Alt and the underlined letter of the menu title Each menu provides access to a certain type of functionality File View Configuration Execute Tools Help Figure 2 5 TestKit Sample Menu Bar 2 2 2 3 Toolbar The Toolbar shown in Figure 2 6 is located beneath the Menu Bar The Toolbar provides quick access to commonly used functions a E te Sse BD oe eS be Figure 2 6 TestKit Sample Toolbar New Settings File Resets all settings to the default values fel Open Settings File Loads the settings previously saved in a file Save Settings File Saves the current settings to the current file If the settings have not yet been saved to a file you will be prompted to specify a file name and location ere EE Displays the Phase Calibration Window Indicates the connection status with the SR5500 unit and triggers the opposite status when clicked LE Displays the Table Format Window Displays the Test Assistant Window 2 2 2 4 View Area The contents of the View Area can be changed to provide access to different functionality Select the contents of the View Area by clicking the View buttons or by making a selection from the View menu
204. t because they are too short in duration 10 i T T I I I Input Signal Power Samples Included in Power Measurement Set Trigger Level th 10 ty g 20 Ae m L 30 PET d Ny N Time s y 10 Figure 3 27 Trigger Level 4 SPIRENT spied innovation Communications 130 SR5500 USER MANUAL _ 7 SPIRENT inspires innovation Communications 4 Instrument API 4 1 Overview Spirent Communications provides the SR5500 TestKit application as the Graphical User Interface GUI for advanced control of the SR5500 resources SR5500 TestKit is the recommended control interface for the SR5500 Additionally Spirent Communications provides the SR5500 Wireless Channel Emulator Instrument API Application Programming Interface This is provided for developers who want to remotely control the SR5500 directly for example within proprietary control applications or automated test environments Previously the remote control interface consisted of the proprietary user command set A remote control application was required to transmit individual commands to the unit to configure it This required individual development of the drivers For the SR5500 this remote control interface is replaced with the advanced Application Programming Interface API interface An API is a library of programming objects routines and other building blocks provided to a programmer in a widely accepted for
205. ted Technology and Unit Under Test Refer to Section 2 6 on page 43 for details on controlling the Carrier Frequency Band Channel Technology and the Unit Under Test To the right of the Carrier frequency are the Power Controls and Indicators Refer to Section 2 6 1 on page 43 for details on controlling the input and output powers SPIRENT inspires innovation Communications 34 SR5500 USER MANUAL Carrier Carrier Q Overload Set Overload nput Set Freq MHz ET Freq MHz Ex end EEN EJ Bypass sana KT OJ Eass Output Chone EN RE Em kt a EX C N Messured Ratio Outpat Output En Qov ZZ EE gt OR ob CC RE e En Ooveies DEN DEN 50 gt OC CCS CC Measured Se A Morel ott Freq MHz RE dBm dBm zana RE EE oo Ooverlosd EE HE 0 gt OEE ob obs Chanel EEN 10 Covei BEN TE 0 gt OX of obs ws QO Cours E DIN oo ORE CE CC Overs D Ei 00 amp O RF Output OS OC 8S SS d Figure 2 10 TestKit Sample Dual Channel Controls Top 2x2 MIMO Controls Middle and 4x4 MIMO Controls Bottom 2 2 2 8 Status Bar The status bar indicates the current settings for the following items e Channel Mode e RF Band e Technology e Unit Under Test e System Fading e Unit AWGN e Remote Status e Operation Progress Channel Mode Dual RF Band Lower Technology UMTS Unit Under Test UE Channel Fading Uncorrelated AWGN Uncorrelated Status Connected Figure 2 11 TestKit S
206. th 6 5 MHz Fe 10 FC Frequency MHz Fc 10 Fe 20 Figure 3 20 Typical SR5500 AWGN Source Power vs Frequency 6 5 MHz Bandwidth Magnitude dB 1 a tv So 35 40 45 Fe 20 Typical AWGN frequency response Bandwidth 13 MHz T T T T T T j T T T f T L i Fe 10 Fe Frequency MHz Figure 3 21 Typical SR5500 AWGN Source Power vs Frequency 13 MHz Bandwidth SPIRENT inspired innovation Communications CHAPTER THREE TECHNICAL REFERENCE 125 Typical AWGN frequency response Bandwidth 26 MHz Magnitude dB rm L Oo 35 40 t 45 l J l 1 i l 1 i I 1 i l 1 l j F Fe 10 Fe Fe 10 Fc 20 Frequency MHz Figure 3 22 Typical SR5500 AWGN Source Power vs Frequency 26 MHz Bandwidth The power of the band limited noise interferer relative to the carrier power may be specified in one of three ways carrier to noise carrier bit power to noise power spectral density and carrier power to noise power spectral density In carrier to noise C N mode the power of the band limited noise is set as a ratio of carrier power to noise in the bandwidth of the receiver In carrier bit power to noise power spectral density Eb No mode the power of the band limited noise is set as a ratio of carrier bit energy to noise power spectral density _ SPIRENT spied innovation Communications 126 SR5500 USER MANUAL d p SPIRENT
207. that SR5500 Testkit is properly setup by the remote commands 5 3 2 Start Stop the Listener Starting the listener allows incoming TCP IP or GPIB connections to be accepted Stopping the listener forcibly disconnects any TCP IP clients 5 3 3 Local Remote Mode To accept remote commands the SR5500 must be in Remote Mode While in Remote Mode you cannot exit the RPI view If Local Mode is selected you are able to access all views and menus but remote commands are not accepted This allows you to verify that commands sent remotely have properly setup the system Entering Local Mode unlike stopping the listener does not disconnect any connected TCP IP clients Enter Remote Mode again manually for the RPI to again accept commands from the remote user 5 3 4 Enable Monitor Messages Enabling monitor messages enables the display of status information associated with commands received by the RPI Disabling these messages increases the speed of command processing 5 3 5 Enable TCP IP Echo When enabled the RPI echoes back all characters sent to it This is useful when you manually connect to the RPI via a TCP IP client and need to view what is being typed You can disable this function to increase the speed of the parser and to simplify the task of parsing responses from the RPI 5 3 6 Automatically Configuring SR5500 TestKit for Remote Control You can open the RPI automatically after the initial setup by adding the RPI command
208. the given path of the given channel in the given unit Parameter Range Selection RST Resolution TE 30 to 30 aS UNIT CHAN PATH MODulation lt string gt UNIT CHAN PATH MODulation Set the Modulation Type for the given path of the given channel in the given unit Parameter Range Selection RST Resolution 1 t 4 uni 1 to 2 channel 1 1 1 to 24 path lt string gt NONE RAYLeigh RICian NONE UNIT CHAN PATH PHSHift lt real gt UNIT CHAN PATH PHSHift Set the Phase Shift for the given path of the given channel in the given unit Parameter nena RST Resolution 1 to 2 channel EE O to 360 ee UNIT CHAN PATH RPLoss lt real gt UNIT CHAN PATH RPLoss Set the Relative Path Loss for the given path of the given channel in the given unit i SPIRENT inspires innovation catons CHAPTER SIX COMMAND REFERENCE 187 Parameter Range Selection RST Resolution CEE E Tito 2 lt real gt O to 32 UNIT CHAN PATH STATe lt bool gt UNIT CHAN PATH STATe Enable or disable the given path of the given channel in the given unit Parameter Range Selection RST Resolution C EE 1 to 2 channel a lt bool gt UNIT CONFiguration lt string gt UNIT CONFiguration Set the Channel Configuration for the given unit Parameter
209. ths in the system To reset all matrices to zero click the Clear All Paths button After entering all value click the OK button to implement the matrix or click the Cancel button to discard any changes If you select Complex as the Correlation Coefficient Type for a set of units in 2x2 or 4x4 MIMO mode the Complex Correlation window displays as shown in Figure 2 119 and Figure 2 120 respectively i 5 2 SPIRENT rs Communications CHAPTER TWO OPERATION REFERENCE 105 faa MID Sten Dorr Faih 13 Path 14 Path 15 Path 16 Path if Path 3 Path 70 Path 71 Patha Path Path Het Waid Copy Temi Paia Sheer All Poche impart Lape 3 amore omon E oto 008 se 0 0008 0 08 o TOTS Path Matic Vald Copy To All Pathe Clear A Puhe ivoor Expert View Comolax F Correlate 404 MIMO systems Figure 2 120 4x4 MIMO Complex Correlation Window The complete channel to channel complex correlation matrix displays in the Complex Correlation window Specify the matrix for each path up to 24 paths by selecting the appropriate folder tab at the top of the window Enter the values in the lower left triangle of the matrix The upper right triangle displays the complex conjugate of the lower left reflected about the main diagonal enforcing the Hermitian matrix The shaded boxes indicate intra unit correlation while the white boxes set inter unit correlation As you enter values
210. tilisant l encoche au sommet du module d entr e d alimentation voir le sch ma ci dessous 3 Enlever le fusible du support comme montr ci dessus 4 Pour remise en tat s lectionner le fusible appropri et le placer sur le support Numero du Composant Type 1800 6776 10A 250V Fusible temporis 5 R installer le support de fusible dans le module d entr e d alimentation 4 d SPIRENT sr LOT aCe LIENS 6 GHz Option Proc dure de Remplacement de Fusible Le fusible d origine est dimensionn selon le voltage le plus courant dans le pays de destination ATTENTION D connecter de l alimentation avant l op ration 1 Localiser le module d entr e d alimentation sur le panneau arri re 2 Avec un petit tournevis enlever le support a fusible en utilisant l encoche au sommet du module d entr e d alimentation voir le sch ma ci dessous w BE y 3 Enlever le fusible du support comme montr ci dessus 4 Pour remise en tat s lectionner le fusible appropri et le placer sur le support Numero du Composant Type 1800 7789 3A 250V Fusible temporis 5 R installer le support de fusible dans le module d entr e d alimentation ij 2 SPIRENT sinon Communications
211. to 20 dB 0 2 dB C N Ratio from 20 to 30 dB 0 3 dB C N Ratio from 30 to 32 dB 0 4 dB Sequence Duration gt 2 hours Crest Factor 0 001 of the time the AWGN source Shall exceed 10 dB PAR per UMTS specifications Refer to Technical Specifications for a typical CCDF of the AWGN source 7 7 Power Measurement Characteristics Number of Independent Power Meters per Channel One at each channel input One at each channel output continuous mode only Trigger Types Continuous Triggered Trigger Level Range 50 to O dBm Averages 2x where 2 lt X lt 31 0 206 usec per average TestKit Power Meter Update Rate 2 Hz 7 8 Interface and Environmental Characteristics 7 8 1 SR5500 Front Panel Indicators Channel Overload 1 LED indicator channel Channel Bypass 1 LED indicator channel D S P RE nspired innovation Communications 208 SR5500 USER MANUAL SPI f RENT Status LCD Display Port Enabled MIMO Enabled 7 8 2 SR5500 Power Requirements Voltage Frequency Power Fuse Type Number of Fuses Fuse Location Conductor 1 LED indicator 40 character X 2 Line Display 1 LED indicator RF Port 1 LED indicator 85 250 VAC auto sensing 47 63 Hz 300 Watt maximum 10 Amp 250 Volt slow blow fuse 2 Hot conductor Neutral 100 240 VAC auto sensing 45 Watt maximum 7 8 3 6GHz EX Option Power Requirements Voltage Frequency 50 60 Hz Power Fuse Type Number o
212. to the grid To display the Path Modulation Parameters window place the mouse cursor anywhere in the appropriate row in the Path Modulation column and click the More button that displays in the row Refer to 2 7 2 3 on page 63 for more details Modulation CT ve Figure 2 62 Modulation List Channel 1 Path 1 Modulation Parameters Fading Parameters Velocity kmh dmb Doppler 4170 Hz Figure 2 63 Path Modulation Parameters Window The Phase Shift and Frequency Shift can be modified even the modulation is Static However the Frequency Shift cannot be modified if the Frequency Shift mode is High Speed Train The Fading and Rician parameters can be modified only when the Modulation is set to Rayleigh Rician and Rician respectively To add all of the path parameter columns to the grid select Menu gt Configure gt Table Format or click the Table Format icon in the toolbar The Table Configuration window displays as shown in Figure 2 64 i SPIRENT minon mmumcations CHAPTER TWO OPERATION REFERENCE 63 Table Configuration Table Format Configuration Delay Parameters r Fading Doppler Show r Fading Velocity Show r Phase Shift Show z Frequency Shift Show ka Rician K Show r LOS Doppler Show r Fading Spectrum Shape Show Log Normal Show Default View Show All W Show Coupled Parameters Warning Cancel Figure 2 64
213. ure 2 94 Entering Emulation File Name 4 4 SPIRENT spied innovation Communications 82 SR5500 USER MANUAL E Microsoft Goce den template Edi EA ia ge Eit yes fot Format Tools am Window bep 28 x ii in L Poe oe 5 257 5 E j dr 19 nuE a i FR oe de A ar SeddSece Timea O00 CE oo i ees E H L M F g R T LI cor aye Cure Mana cole Lire EETA Papar Sans File Woie AT ANVGM RFZ AWGH CHi Pi Halus Stabus Santas CHi Fi CH Chear Tessier A3 Output Relative CHT PA CHA Pa Dap Fons Oo OFF 6 OFF RFI CIM RF CM D F CHA Pi Path L ss LOS ADA CHIPIK Frequency W lt Commeant Time Stamp cl Berra i OH 1 OH Ratio dE Rado dM 1 6n Delay ies dp deg Factor dQ Shite Mr Kim 2 60 00 rx 10 0 1 ai 10 30 0 1 3J Doppler varaben 13 sar 0000 00 02 0 01 50 1 oo 20 24 0 4 00 00 00 03 53 00 30 amp 0 1 oo chi 28 0 5 00 00 00 04 55 90 20 7 0 0 oo 40 27 0 6 00 00 00 06 59 R 1 0 60 Oo od 50 26 0 T 00 00 00 06 49 00 oa 0 1 oa 66 25 0 00 00 00 07 3U 1 0 4 0 l 00 0 24 0 4 00 00 00 08 59 T0 2 0 3 0 E 00 6 0 23 0 10 0000 00 09 54 T0 cu 2 0 1 oo ag 22 0 11 00 00 00 10 59 70 4 0 10 1 0 0 10 0 21 0 12 00 00 00 11 59 60 50 00 0 00 110 0 0 13 00 00 00 12 53 60 60 10 1 00 120 190 14 00 00 00 13 59 50 10 20 1 00 130 18 0 15 00 00 00 14 59 50 80 3 0 1 00 14 0 17 0 16 00 00 00 15 53 50 30 40 0 00 15 0 16 0 17 00 0
214. uted to both channels 2 3 4 TX Diversity Mode Fading ITA Ch1 Input Ch1 Output Correlation Coefficient aa Fading Ch2 Input Figure 2 15 TX Diversity Channel Mode Setting the Channel Configuration to TX Diversity provides two channels each having 12 Paths The inputs to both RF ports are faded and then summed together SPIRENT mi OTT Ca ors CHAPTER TWO OPERATION REFERENCE 37 2 3 5 2x2 MIMO Mode RF1 Input RF1 Output RF2 Input RF2 Output Figure 2 16 2x2 MIMO Channel Mode Setting the Channel Configuration to 2x2 MIMO provides four sub channels each having 24 Paths The inputs to both RF ports are faded and summed together as shown in Figure 2 18 In 2x2 MIMO mode each channel h11 h21 h12 h22 has the same power delay profile as the other channel This mode is available when the appropriate hardware and software options are installed 2 3 6 4x4 MIMO Mode RF 1 Input RF2 Input RF3 Input HFA Input E TETT TTE T T TTT Figure 2 17 4x4 MIMO Channel Mode Setting the Channel Configuration to 4x4 MIMO provides sixteen sub channels each having 24 Paths The inputs to all four RF ports are faded and summed together as shown in Figure 2 18 In 4x4 MIMO mode all sub channels hij 1 1 4 j 1 4 have the same power delay profile This mode is available when the appropriate hardware and software options are installed Refer to Section 2 13 for more details o
215. value of n R n Real component of n S n Imaginary component of n When the Correlation Coefficient Type is Complex the correlation between the Rayleigh fading variables is a complex number and is defined as f SPI RE NT nspired Innovation MT mmumcations CHAPTER TWO OPERATION REFERENCE 103 Where X and Y are the complex fading variables applied to each path E n is the expected value of n NOTE Complex Correlation can be used to create correlation values previously achieved using component or envelope correlation settings To create a component correlation of x Complex correlation x Oi To create an envelope correlation of x Complex correlation Vx Oi 2 13 8 System Based Correlation The correlation of Rayleigh fading between units can be set by selecting Configuration gt Correlation Coefficient Between Units or clicking the Correlation Coefficient between Units icon Pi in the toolbar ri SR5500 TestKit untitled File View Configuration Execute Tools Units Help D Gel System Communication Setup Poesessseseseseseseseessee Vi 2 Power Meter Parameters HH Table Format E K Correlation Coefficient Between Units X a Y Ghannel Player 2 Figure 2 116 TestKit Configuration Menu If the Correlation Coefficient type is set to Envelope or Component the Correlation Coefficients window displays as shown in Fi
216. variation in delay spread SR5500 sliding delay emulation smoothly varies the temporal location of individual multi path components using a periodic sinusoidal function A two path example is shown in Figure 3 4 below In this example Path 1 has fixed delay to while Path 2 has sliding delay oscillating over the delay range of At A A A D 1 QA t T an A QA lt At gt gt t t Relative Delay Soread Figure 3 4 Sliding Delay Example E NT inspired Innovation OTT Ca ors CHAPTER THREE TECHNICAL REFERENCE 111 Several parameters must be defined for paths employing sliding delay These include e Minimum Delay minimum delay of the sliding path e Maximum Delay maximum delay of the sliding path e Rate of Oscillation rate of sliding delay change e Delay Period time of one sliding delay period 3 4 2 Birth Death Time varying Relative Path Delay As an alternative to changing the delay spread of a path by sliding the path along the delay axis some channel models employ Birth Death time varying delay emulation The Birth Death emulation method randomly varies the location of the paths in the Power Delay Profile along the delay spread axis Paths take turns hopping between pre defined delay spread bins An example Birth Death sequence is illustrated in the series of power delay profiles found in Figure 3 5 P P P P P P A A AoA A A
217. w Hide Unhide The DEE template provides some shortcuts for selectively displaying information associated with a particular Channel or Path Use the Hide Unhide button to hide or show particular columns limiting the information displayed to what you want to modify View Selection Form Paths to View Parameters to View Channel 1 W Path 1 lw Path 2 lw Path 3 M Path 4 W Path 5 W Path 6 lw Path 7 lw Path 8 lw Path 9 WF Path 10 W Path ii Il Path 12 Channel 2 W Path 1 W Path 2 W Path 3 W Path 4 iw Path 5 iw Path 6 Select All Select None W Path 7 W Path 8 W Path 9 M Path 10 iw Path 11 lw Path 12 W State Duration lw Path Status i CHIRF Output Power M Relative Delay if CH2RF Output Power M Relative Path Loss MW CHi AWGN Status bW LOS AOA lf CH AWGN Status W K Factor lf CH1 C N Ratio I Frequency Shift lf CH C N Ratio Select All W Doppler Velocity Select None Figure 2 99 View Selection Form Window 2 8 2 8 Clearing the Template The Clear Template button allows you to clear all the data in the spreadsheet 2 8 3 The SR5500 is capable of dynamically changing the current state of a number of Path and Channel parameters These changes can be setup in a table using Microsoft Excel Dynamic Environment Emulation DEE View _ _ SPIRENT PMU Mca Corns nspired innovation 86 SR5500 USER MANUAL 2 8 3 1 Accessing the DEE View Access the DEE vi
218. w also displays the absolute power for that sub channel based on the relative power If a sub channel is disabled the output power on the associated RF port is maintained by increasing the power on the other sub channels The Default button sets all values to the defaults By default all sub channels are enabled the Relative Powers are set to O dB and the phases are set to O degrees EE SPIRENT inspires innovation Communications 76 SR5500 USER MANUAL 2 7 5 Summary View The Summary View allows you to simultaneously view the state of all of the configured units Access the Summary view by clicking the Summary button or by selecting View gt Summary 2 7 5 1 Path Parameters Examine the current state of all configured paths using the Path Parameters tab This tab displays configured paths on all units Paths that are not enabled do not display in this view All items are read only Unit Channel Path Channel T SPIRENT inspires innovation Communications Path Fading Doppler Fading Doppler Phase Shift Frequency Shift F red Deg Mode Fading Doppler Fading Doppler Phase Shift Frequency Shift Frai Hz Vel km h Deg Mode Fixed Figure 2 87 Path Parameters View 2x2 MIMO Mode CHAPTER TWO OPERATION REFERENCE 77 Path Parameters System Parameters Unit Channel Path Modulation ae i a Phase Shift Figure 2 88 Path Parameters View 4x4 MIMO Mode 2 7 5 2 System Parameters Examine th
219. wer line R sum des r gles de s curit Si le mat riel est utilis d une fa on non conforme aux sp cifications du constructeur la protection assur e par le mat riel peut tre mise en d faut Symboles de s curit Les symboles suivants sont utilis s dans tout le manuel et peuvent tre trouv s sur le mat riel Il est recommand de se familiariser avec chaque symbole et sa signification avant de manipuler le mat riel A Symbole manuel d instruction Ce symbole apparait sur le produit lorsqu il est n cessaire de se r f rer au manuel d instruction pour viter une d t rioration du mat riel rh Terre ce symbole identifie la connexion de terre charg e de prot ger le mat riel contre les chocs lectriques Cette connexion doit tre raccord e vers un conducteur externe de protection ou vers une lectrode de type terre Ce symbole indique un voltage dangereux connexion aliment e en interne par un voltage exc dant 1000 volts oN Spirent Communications Inc Caution Masse Ce symbole identifie une connexion au chassis du mat riel ce chassis inclut normalement toutes les structures m talliques expos es Ce symbole d signe une op ration ou une condition dite sensible qui Si elle n est pas correctement r alis e pourrait entra ner de s rieuses d t riorations au mat riel ou aux donn es utilisateur Courant alternatif ligne de puissance
220. x Enter the appropriate channel in the Channel Number textbox If the values you enter are valid SR5500 TestKit displays the corresponding Carrier Frequency in MHz in the read only Carrier Frequency textbox If you want to change the currently selected Technology and or Unit Under Test use the Test Assistant For details on using the Test Assistant refer to Section 2 3 on page 34 To set the Carrier Frequency in MHz directly 1 Click the Select Carrier Frequency button 2 Edit the Carrier Frequency in MHz in the textbox 3 Click OK to save the changes and close the window To cancel the changes click the Cancel button 2 7 1 4 Input and Output Level Control Overview Both the SR5500 input ranging circuit and nominal output level can be manually configured Set the input ranging circuitry to match the RMS signal power present at the input port to the SR5500 The output level parameter determines the nominal RMS output power present at the output port of the SR5500 NOTE The output power level specified will only be accurate if the measured input power matches the set input power settings To achieve the ideal performance from the SR5500 you must properly configure the SR5500 input ranging circuit to the RMS input power The SR5500 can measure the input signal and automatically set the input ranging circuit or you can manually set the input ranging circuit There are special concerns with directly setting these levels
221. y Pause Stop across units Play Pause Stop G lation Coefficient Correlati f Correlation Coefficient type Cc Frequency Mode of the system RF Frequency Mode Lower Band 400MHz 2700MHz IP Address of this PC Select the IP Address of this PC from the list of found IP Addresses for this PC 192168067 v Unit 1 Unit2 Unit3 Unit4 Channel Configuration Dual Paths Fading Channel 12 Crest Factor Channel 1 15 0 dB Channel 2 15 0 dB Ethernet Setting Enter the IP Address of the remote unit 192 168 0 7 Query Change the IP address of the remote unit IP Configuration Figure 2 25 System Configuration Window 2 7 1 2 Setting the Channel Crest Factor The Channel Crest Factor is a measure of the maximum peak avg power ratio that the SR5500 can accept without causing an overload condition You can configure each channel of the SR5500 to have a larger than default crest factor setting by using the System Configuration window shown in Figure 2 25 To access this window select Configuration gt System Communication Setup or click the System Communication Setup icon from the toolbar The SR5500 Crest Factor is set to 15 dB which is sufficient for most applications You can set larger values when required by the application NOTE Increasing this value limits the maximum output power of the SR5500 Additionally system noise and spurious performance will be degraded 2 7 1 3 Adjust

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