Home

Service Manual 3026 3 GHz Real Time Spectrum

1.
2. 6 59 Troubleshooting Procedure 6 59 DiagnoStiCS 4 4 RE CER RASS A ERR As 6 60 Symptoms and Faulty Modules 8 6 78 Accessing the BIOS 6 81 einsehen ser 6 82 Setting the BIOS Parameters 6 83 Backing Up the System Files 8 5 6 89 ii 3026 3 GHz Real Time Spectrum Analyzer Service Manual Table of Contents Options Electrical Parts List Diagrams Mechanical Parts List Options and Accessories 7 1 nn TEMP ETE 7 1 Standard ACCessorieS s ee pes oc STRE SALLE CI RR eR Ie PUR S 7 2 Optional Accessories gia x ete pe hare e or RR Res 7 2 Electrical Parts List ran I ea isa Ones innii t EIE n 8 1 Did9ramis ewe wv Y SEE RR RE RR QUEE CRUS UE E UU FU nee 9 1 Mechanical Parts List 10 1 Parts Ordering Information sase csere nes asas saa sa asqa e 10 1 Using the Replaceable Parts List 10 2 3026 3 GHz Real Time Spectrum Analyzer Service Manual iii Table of Contents List of Figures Figure 2 1 Power switch 2 4 Figure 2 2 RF INPUT connector 2 8 Figure 2 3 System information
3. PC Signal generator J GPIBcable d 000 Output 50 Q N N coaxial cable Figure 4 19 Initial test hookup 1 Install the test hookup and preset the instrument controls a Turn off the signal generator 3026 and PC b Connect the generator output through a N N coaxial cable to the 3026 RF INPUT See Figure 4 19 c Connect the GPIB cables at the generator 3026 and PC rear panel d Turn on the generator 3026 and PC e Setthe generator GPIB address to 1 and the configuration to Listener 4 38 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification f Install the RF flatness check program on PC if not yet installed m Copy the file 3026FREQ EXE Item 13 to anywhere on the PC for example under the CATEMP 3026 directory 2 Letthe instruments warm up Allow one hour warm up period before you go to the next step 3 Perform the auto measurement a Insert the floppy disk Item 14 that stores the flatness correction data file sflatoff txt b On the PC screen double click the 3026FREQ EXE icon to run the auto measurement program c Click the arrow button on the upper left corner to start the measure ment See Figure 4 20 Click this button to start the measurement zx 85 1 as 69 2 3026 RF Flatness Check Program 25MHz MAX Vak MIN Value F 0 38 zt freq vs ampl 7002 0 30
4. 5 MHz m Press the REF LEVEL button and set the reference level using the keypad Ret auper uut 0 dBm 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification b Set the signal generator controls Frequency 2 5 MHz Amplitude 20 dBm RF output On c Hook up the generator Connect the output of the generator through a 50 Q coaxial cable to RF INPUT of the 3026 See Figure 4 8 2 Acquire data a Press the ROLL BLOCK button to select the Roll mode b Press the START STOP button to start data acquisition 3 Measure peak Press MARKER gt Peak Find Highest Peak to place the marker on the peak signal Read the peak level and note it 4 Modify the 3026 control and check the level a Change the reference level to one of the settings listed in Table 4 3 b Press MARKER gt Peak Find Highest Peak to place the marker on the peak signal and read the peak level c Check that the difference between this peak level and the one noted at step 3 is within 0 5 dB d Repeat substeps a through c until all reference level settings listed in Table 4 3 are checked e Make sure that the reference level is set to 9 dBm for the next steps Table 4 3 Level accuracy Reference level setting Level accuracy limits 3 dBm 0 5 dB 5 dBm 0 5 dB 9 dBm 0 5 dB 5 Modify the signal generator control
5. NOISE POWER LEVEL OMENU COO OSETUP TRIG OOo 0 k m ENTER EXT TRIG RF INPUT TL 50 Q MAX 30 dBm Figure 2 5 START STOP button 2 10 3026 3 GHz Real Time Spectrum Analyzer Service Manual Operating Instructions 2 Press the FREQ button m Use the general purpose knob or value entry keys to set the center frequency to 16 MHz You should have obtained the spectrum display The current span is set to 2 MHz Next change the span 3 Press the SPAN button m Set the span to 10 MHz by using the general purpose knob or value entry keys Pressing the Span 10 MHz bottom button will produce the same result Figure 2 6 shows a typical spectrum display with the center frequency set to 16 MHz and the span set to 10 MHz SPAN VALID F MRG CF 16 888 888 Hz SPAN 18 MHz REF 8 8 dBm 9 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 100 0 ET Gey 829 69 ma 21 0 9 9 69 ka Figure 2 6 Typical spectrum display 16 MHz center frequency and 10 MHz span 3026 3 GHz Real Time Spectrum Analyzer Service Manual 2 11 Operating Instructions Dividing the Display Area and Changing the Display Mode Dividing the Di
6. 2 9 Figure 2 4 Initial screen 2 9 Figure 2 5 START STOP button 2 10 Figure 2 6 Typical spectrum display 16 MHz center frequency and 10 MHzspan eere e t e ERES EET Soo cele ave 2 11 Figure 2 7 Buttons in DISPLAY area 2 12 Figure 2 8 Spectrogram display upper and spectrum display lower ree S Ee ete Ee P EP V 2 12 Figure 2 9 SELECT button 2 13 Figure 2 10 Waterfall display and spectrum display 2 14 Figure 2 11 ROLL BLOCK button 2 15 Figure 2 12 Data acquisition in the Block mode 2 16 Figure 2 13 Displaying dual markers 2 17 Figure 2 14 MARKER TOGGLE button 2 18 Figure 2 15 Measurement of frequency difference with dual Markers 22 2 6600 ener een 2 19 Figure 2 16 Creation of trigger region 2 21 Figure 2 17 Created trigger mask blue region 2 22 Figure 2 18 Waveform display before triggering 2 23 Figure 2 19 Frame in which trigger occurred 2 25 Figure 4 1 Display of the self test results 4 3 Figure 4 2 CAL NEED indication in status indication area 4 5 Figure 4 3 Initial test hookup 4 10 Figure 4 4 Initial
7. 6 18 Figure 6 8 Front panel knob removal 6 20 Figure 6 9 Line cord removal 6 21 Figure 6 10 Rear cover and cabinet removal 6 23 Figure 6 11 Trim ring and menu buttons removal 6 25 3026 3 GHz Real Time Spectrum Analyzer Service Manual V Table of Contents vi Figure 6 12 Figure 6 13 Figure 6 14 Figure 6 15 Figure 6 16 Figure 6 17 Figure 6 18 Figure 6 19 Figure 6 20 Figure 6 21 Figure 6 22 Figure 6 23 Figure 6 24 Figure 6 25 Figure 6 26 Figure 6 27 Figure 6 28 Figure 6 29 Figure 6 30 Figure 6 31 Figure 6 32 modules Figure 6 33 modules Figure 6 34 Figure 6 35 Figure 6 36 Figure 6 37 Figure 6 38 Figure 6 39 Figure 6 40 Figure 6 41 Figure 6 42 Figure 6 43 Figure 6 44 Figure 6 45 Figure 6 46 Figure 6 47 Figure 6 48 Front panel assembly removal 6 26 Disassembly of front panel assembly 6 27 Front panel connectors removal 6 29 Opening the top chassis 6 31 Fan and fan frame removal 6 32 Floppy disk drive removal 6 33 Opening the down converter chassis 6 34 Hard disk drive and solid state disk removal 6 35 Display module removal 6 37 Board retainer and shield cover removal
8. 5 7 Figure 5 4 Initial test hookup 5 8 Figure 5 5 Loading the adjustment file from the floppy disk 5 9 Figure 5 6 Calibration amp Set Constant menu 5 10 Figure 5 7 Initial hookup for setting up the power meter and SENSOR x ruo eter heb IRE REC PI Eres 5 12 Figure 5 8 Hookup for calibrating the power sensor 5 12 Figure 5 9 Test hookup 5 13 Figure 5 10 Initial hookup for setting up the power meter and SENSOR ale Renee ree eroe E EA 5 15 Figure 5 11 Hookup for calibrating the power sensor 5 15 Figure 5 12 Test hookup 5 16 Figure 5 13 Running the SG flatness measurement program on PC cox cto RN a i re SUA EDS Ra 5 17 Figure 5 14 Label location 5 19 Figure 5 15 Serial number entry 5 20 Figure 5 16 Test hookup 5 21 Figure 6 1 3026 orientation 6 12 Figure 6 2 Guide to removal procedures 6 13 Figure 6 3 External modules 6 14 Figure 6 4 Internal modules 6 15 Figure 6 5 Board modules 6 16 Figure 6 6 Power supply modules 6 17 Figure 6 7 Rear panel modules
9. J100 on A7 M N Re connect the cable between J100 on A7 DDC board and J700 on A5 Baseband board with a 30 cm extension cable Tektronix part number 174 4264 XX Se J700 on A5 lt Figure 5 1 Accessing the A5 Baseband board 3026 3 GHz Real Time Spectrum Analyzer Service Manual 5 5 Adjustment Procedures J100 DDC board A5 Baseband board 4700 Adjustment pot gt side Y610 Figure 5 2 Adjustment and connector location 5 6 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures 3026 rear Frequency counter 50 Q terminator 50 Q BNC coaxial cable Figure 5 3 Test hookup 2 Connect the test equipment and set test equipment controls a Hook up the frequency counter Connect 10 MHz REF OUTPUT of the 3026 through a 50 Q BNC coaxial cable and a 50 Q terminator to INPUT A of the counter See Figure 5 3 b Set the frequency counter controls Function Gate tme er sn 2s 3 Adj
10. J440 J400 Figure 6 39 Location of the A5 Baseband and A13 Filter board 6 72 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting A6 FFT board Figure 6 40 Location of the A6 FFT board 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 73 Troubleshooting J100 7 board 7 DDC board Figure 6 41 Location of the A7 DDC board 6 74 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting m IIIIIIIIIIII A8 Memory board A8 Memory board Figure 6 42 Location of the A8 Memory board 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 75 Troubleshooting gt J5 1 0 J3 EXT REF IN J6 EXT REF OUT J7 RF INPUT Figure 6 43 U100 down converter location 6 76 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting n di W19 and W20 Front The back of the LCD module To J10 and J11 on the A1 Mother board f To J09 on the _ A1 Mother board Figure 6 44 LCD wire location 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 77 Troubleshooting Symptoms and Faulty Modules 6 78 Table 6 7 Symptoms and faulty modules Symptom The power on self test displays MEMORY ERROR
11. Use this procedure when the front panel keys do not respond normally Connect the analyzer to the correct power source Turn on the power switch Do the rotary encoder the main keys or the side keys operate normally Replace the A2 Key board 1 or A3 Key board 2 Figure 6 37 Troubleshooting procedure 6 Front panel modules 6 70 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting J300 W350 1 J350 W350 J360 A11 DC Power 1 board A12 DC Power 2 board A12 DC Power 2 board A11 DC Power 1 board back Figure 6 38 Location of the A11 and A12 DC Power boards 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 71 Troubleshooting J620 J610 Table 6 6 Normal supply voltage A5 Baseband board Board Connector A5 W38 Voltage 45V 5V GND 12 V 12 V mm A13 J430 420 V 48V 412V 12V Hut Tu W38 W31 J700 A13 Filter board J450 ER Em A13 Filter board J430 A5 Baseband board J410
12. 6 39 Daughter boards removal 6 42 A1 Mother board removal Top side 6 44 A1 Mother board removal Bottom side 6 45 Down converter and A5 Baseband board removal 6 47 A13 Filter board removal 6 49 and A12 DC Power boards removal 6 51 A10 Sub Power board and Power Supply removal 6 53 Power supply removal 6 54 Rear panel modules removal 6 57 Rear BNC cable assembly removal 6 58 Troubleshooting procedure 1 Power supply DILE 6 61 Troubleshooting procedure 2 Signal processing EID 6 64 Troubleshooting procedure 3 Clock modules 6 66 Troubleshooting procedure 4 LCD display modules 6 68 Troubleshooting procedure 5 CPU modules 6 69 Troubleshooting procedure 6 Front panel modules 6 70 Location of the A11 and A12 DC Power boards 6 71 Location of the A5 Baseband and A13 Filter board 6 72 Location of the A6 FFT board 6 73 Location of the A7 DDC board 6 74 Location of the A8 Memory board 6 75 0100 down converter location 6 76 LCD wire location 6 77 Connecting the keyboard 6 82 BIOS SETUP screen 6 83 STANDARD CMOS SETUP screen 6 84 BIOS FEATUR
13. 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 25 Removal and Installation Procedures 2 Orient instrument Set the 3026 so its bottom is down on the work surface and its front is facing you 3 Remove front panel assembly See Figure 6 12 a Pull forward the top edge of the front panel assembly slightly and lift it up away until you can reach the interconnect cables b Disconnect the cable at J08 of the Al Mother board Refer to the procedure A7 Mother Board on page 6 44 Then pull it out of the front subpanel c Disconnect the flex board connector from the front panel assembly Flex board 7 SS Sae s S S soe C ses gt 4 SSS 399 To J08 on the A1 LX 898969 S899 Mother board ps Figure 6 12 Front panel assembly removal 6 26 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures 4 Further disassembly of front panel assembly If the front panel or the front panel buttons are to be serviced do the following substeps a Remove the front panel knob from the front panel module with the procedure Front Panel Knob on page 6 20 b Remove the setscrew completely from the extension using the 0 05 inch hex wrench and then remove the extension from the shaft of the rotary encoder As shown in Figure 6 13 release the five screws and then remove the A2 Key board 1 from the A3 Ke
14. Pulse Amplitude 2V Offset 1V CHloutput On Mode xls ER Trig c Hook up the function generator Connect the output of the generator through a 50 BNC coaxial cable to EXT TRIG of the 3026 See Figure 4 13 2 Acquire data a Press the ROLL BLOCK button to select the Block mode b Press the START STOP button to start data acquisition 3 Check the trigger a Confirm that the 3026 is not triggered The message Input waveform data is not acquired is displayed on the screen b Press Trig Manual button on the function generator c Confirm that the 3026 is triggered The spectrum waveform displays on the screen 4 Disconnect the hookup a Press DISPLAY b Disconnect the cable at RF INPUT 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 31 Performance Verification C N Test 4 32 This procedure checks the Carrier to Noise C N Equipment One signal generator Item 3 Required i One 50 Q N N coaxial cables Item 10 Prerequisites See page 4 8 Signal generator 50 Q N N coaxial cable Figure 4 14 Initial test hookup 1 Install the test hookup and preset the instrument controls a Set the 3026 controls m Press the START STO
15. Table 7 2 Standard accessories Accessory Part number User manual 071 0418 XX Programmer manual 071 0419 XX Data Viewer application software 3 5 floppy disk VIEW3026 U S power cord 161 0230 01 Optional Accessories You can also order the optional accessories listed in Table 7 3 Table 7 3 Optional accessories Accessory Part number Service manual 071 0420 XX Extension cable for adjustment use 30 cm 174 4264 XX PS 2 AT keyboard adapter 103 0419 XX 7 2 3026 3 GHz Real Time Spectrum Analyzer Service Manual Electrical Parts List UU Uu s WWWwg Electrical Parts List The modules that make up this instrument are often a combination of mechanical and electrical subparts Therefore all replaceable modules are listed in sec tion 10 Mechanical Parts List Refer to that section for part numbers when using this manual 3026 3 GHz Real Time Spectrum Analyzer Service Manual Electrical Parts List 8 2 3026 3 GHz Real Time Spectrum Analyzer Service Manual Diagrams xscEasssri Diagrams This section contains the following diagrams for the 3026 m Block diagram Shows the modules and functional blocks m Interconnect diagram Shows how the modules connect together 3026 3 GHz Real Time Spectrum Analyzer Service Manual 9 1 Diagrams 9 2 3026 3 GHz Real Time Spectrum Analyzer Service Manual input 3 GHz Down converter E4 EXT TRIG an 2 A5 Baseban
16. Table 6 3 Internal inspection check list Item Circuit boards Resistors Solder connections Inspect for Loose broken or corroded solder connections Burned circuit boards Burned broken or cracked circuit run plating Burned cracked broken blis tered condition Cold solder or rosin joints Repair action Remove failed module and replace with a fresh module Remove failed module and replace with a fresh module Resolder joint and clean with isopropyl alcohol Capacitors Semiconductors Wiring and cables Damaged or leaking cases Corroded solder on leads or terminals Loosely inserted in sockets Distorted pins Loose plugs or connectors Burned broken or frayed wiring Remove damaged module and replace with a fresh module from the factory Firmly seat loose semiconduc tors Remove devices that have distorted pins Carefully straight en pins as required to fit the Socket using long nose pliers and reinsert firmly Ensure that straightening action does not crack pins causing them to break off Firmly seat connectors Repair or replace modules with defective wires or cables Chassis 6 6 Dents deformations and dam aged hardware Straighten repair or replace defective hardware 3026 3 GHz Real Time Spectrum Analyzer Service Manual Maintenance Cleaning Procedure Interior To clean the analyzer interior do the following steps 1 Blow
17. 1 Turnon the analyzer After a few seconds the BIOS start message appears on screen 2 Press the Delete key on the AT keyboard The analyzer displays the AWARD BIOS SETUP screen You can select the menu with the arrow keys Enter key and ESC key on the AT keyboard ROM ISA BIOS ZC4LGAKM CMOS SETUP UTILITY AWARD SOFTWARE INC STANDARD CHOS SETUP PASSWORD SETTING BIOS FEATURES SETUP IDE HDD AUTO DETECTION CHIPSET FEATURES SETUP SAVE amp EXIT SETUP POWER MANAGEMENT SETUP EXIT WITHOUT SAVING LOAD BIOS DEFAULTS LOAD SETUP DEFAULTS Esc Quit TL Select Item F10 Save amp Exit Setup GhifOF2 Change Color Tine Date Hard Disk Type Figure 6 46 BIOS SETUP screen 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 83 Accessing the BIOS 3 Select STANDARD CMOS SETUP and press the Enter key The STANDARD CMOS SETUP menu appears You can set the hard disk drive capacity on this screen ROM ISA BIOS ZC4LGAKK STANDARD CHOS SETUP AWARD SOFTWARE INC Date mm dd gy Thu Jan 8 1996 Time hh mm ss 1 45 4 CYLS HEADS PRECOMP LANDZONE SECTORS MODE Drive User 3Mb 48 4 65535 4 32 8U10 Drive D User 14415 2792 16 65535 2791 63 Aura Drive A 1 44M 3 5 in Drive B None Base Memory 640K Video EGA UGA Extended Memory 31744 Other Memory 384K Halt On All But Keyhoard Total Memory 32768K ESC Quit tive Select
18. 36 Press the MARKER button 37 Press the Marker Setup bottom button 38 Press the Single Marker side button The x marker MARKER1 is displayed on the center spectrum 39 Press the Frame bottom button The number of the displayed frame can now be set by the general purpose knob Observe that the frame number 0 is displayed just above the side menu 40 Turn the general purpose knob to change the display frame Turn the general purpose knob clockwise to increase the frame number and observe how the displayed waveform spectrum changes Continue turning the general purpose knob and you will notice the first frame in which right and left peaks just rose above the trigger mask The trigger occurred in this frame See Figure 2 19 3026 3 GHz Real Time Spectrum Analyzer Service Manual Operating Instructions MARKER1 FRAME 16000 888 Hz SPAN 2 MHz REF 8 8 dBm MRRKERT 11B 16 888 888 88 Hz 22 73 d 90 0 100 0 GETS 229 a 09 820210202229 85 Figure 2 19 Frame in which trigger occurred As shown above data acquisition in the Block mode allows you to observe the waveform change frame by frame 3026 3 GHz Real Time Spectrum Analyzer Service Manual 2 25 Operating Instructions Shutting Power Off With the following procedure shut off the power supply to the 3026 and to the signal generator 41 Press the ON STBY button on the instrument front panel A dialog box of Saving curre
19. Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product The common terminal is at ground potential Do not connect the common terminal to elevated voltages Do not apply a potential to any terminal including the common terminal that exceeds the maximum rating of that terminal Do Not Operate Without Covers Do not operate this product with covers or panels removed Use Proper Fuse Use only the fuse type and rating specified for this product Avoid Exposed Circuitry Do not touch exposed connections and components when power is present Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Keep Product Surfaces Clean and Dry Provide Proper Ventilation Refer to the manual s installation instructions for details on installing the product so it has proper ventilation 3026 3 GHz Real Time Spectrum Analyzer Service Manual xi General Safety Summary xii Symbols and Terms AN AN Terms in this Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions o
20. PUSH BUTTON DOVE GRAY ABS GASKET SHIELD CONDUCTIVE FORM STRIP 3 3MM X 4 8MM W ADHESIVE TAPE 1M L PLATE FRONT PANEL AL PANEL FRONT 3026 LEXAN SETSCREW 5 40X0 125 STL BK OXD HEX SKT CUP PT KNOB TEK TAN SCROLL 31 75MM ID X 35 6MM OD X 10 7MM H ABS AWG2000 SERIES Mfr Code 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 Mfr Part Number 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List AA LEN WEN 29868 e 0 7H 7 ING US Hu Z 2 Figure 10 2 Front panel modules 10 7 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List Replaceable Parts List Fig amp Index Number 3 1 10 8 Tektronix Part Serial No Number 407 4655 XX 119 6018 XX 426 2426 XX 174 4136 XX 220 0209 XX 119 2683 XX 211 1040 XX 210 0978 XX 211 0905 XX 129 1443 XX 210 0056 XX 333 4303 XX 337 4189 XX 407 4658 XX 119 6048 XX 119 6048 XX 211 0905 XX 211 0871 XX 174 4154 XX 211 1039 XX 220 0227 XX 131 6669 XX 131 6668 XX 407 4656 XX 211 0965 XX 346 0237 XX 276 0337 XX 259 0086 XX 407 4657 XX 211 1080 XX 119 4404 XX Effective Serial No Discont d Qty Name amp Description 1 1 1 BRACKET LCD MOUNT LCD MODULE 6 4 INCH TFT 640X480 VGA FRAME FAN MTG POLYCARBONATE CA ASSY SP EL
21. This procedure checks that the external trigger functions correctly Equipment One function generator Item 4 Required i One 50 Q BNC coaxial cable Item 9 Prerequisites See page 4 8 Function generator EXT TRIG CH 1 Output 50 Q BNC coaxial cable Figure 4 13 Initial test hookup 1 Install the test hookup and preset the instrument controls a Setthe 3026 controls m Press the START STOP button to stop data acquisition Tus Spectrum Spectrogram Press DISPLAY m Press SETUP gt Range gt 50 10MHz m Press SETUP gt FFT gt FFT Pts and select 1024 m Press SETUP gt FFT gt Window Blackman Harris m Press the FREQ button and set the frequency using the keypad Spal coo e dedu 2 MHz m Press the REF LEVEL button and set the reference level using the keypad Ref 222p nee 0 dBm 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification Press SETUP Frame Period Maximum Overlap The frame period is set to 160 us W Press SETUP gt Block Size gt Set to 200 m Press TRIG gt Mode Trig Mode and select Normal m Press TRIG gt Source gt External Trigger Input m Press TRIG gt Position gt Set 10 b Set the function generator controls Function
22. or indicate that the memory size is smaller than 32 768 K bytes Possible faulty module CPU board The power on self test displays FLOPPY DISK FAIL The power on self test displays PRESS A KEY REBOOT or Invalid system disk Replace the disk and then press any key The power up sequence is followed by the initial screen of the Windows 95 instead of that of the 3026 Floppy disk drive CPU board W25 W28 Hard disk drive Solid state disk CPU board W26 W29 CPU board Solid state disk A fault occurs only in the RF mode RF3001 down converter A5 Baseband board W16 A fault occurs only in the Baseband mode The same symptom is found in both the RF and Baseband modes In the RF mode the displayed spectrum goes abnormal only with 10 MHz or more of span In both of the RF and Baseband modes the displayed spectrum goes abnormal with a certain span A fault occurs only at 256 or 1024 of FFT points The Zoom mode does not work The Freq mode and Dual mode are OK A5 Baseband board A7 DDC board A5 Baseband board A6 FFT board A7 DDC board A8 Memory board RF3001 down converter W16 A7 DDC board A6 FFT board A7 DDC board A8 Memory board In the RF mode a fault occurs in a certain center frequency setting In both of the RF and Baseband modes a fault occurs in a certain center frequency setting In the Baseband mode a fault occurs only with a certain center frequen
23. ssssssseee n Observing Spectrum 2 0 0c cece ect n Dividing the Display Area and Changing the Display Mode Using the Block Mode to Acquire Data Using Dual Markers reete ed etes cape cer OR besos Trigger and Mask Pattern Changing the Display Frame Shutting Power Off is sse etse assay e xe cla nen Theory of Operation Module OVeryleW a ushu ym rn 3026 3 GHz Real Time Spectrum Analyzer Service Manual xi xiii xv xix 1 1 2 1 2 1 2 3 2 4 2 5 2 5 2 7 2 8 2 9 2 10 2 12 2 15 2 17 2 20 2 24 2 26 Table of Contents Performance Verification Performance Verification 4 1 ConvVentlOns ae ae eel os wees GARE Ras 4 2 nu RHEIN Rene EU RURSUS RU ROS 4 3 Cahbration i EUER RR CR Re WEE AURA UR E kakara 4 5 Performance Tests x 21322 BN SANA NAP RRA ASN Sasa 4 7 Er HERE RE as 4 8 Equipment Required 2 2 2222 28 sasa Caguana ls a ed cab ERE 4 9 10 MHz Reference Output Test 4 10 10 MHz Reference Input Test 88 4 11 Center Frequency Accuracy Test 4 14 Flatness and Aliasing Test 4 16 Attenuator 68St 4 u BR ESAE ae CURAS 4 18
24. 100 Hz span 256 point analysis 500 kHz to 2 MHz span 50 kHz to 200 MHz span 5 kHz to 20 kHz span 500 Hz to 2 kHz span 200 Hz span 100 Hz span Realtime span Table 1 4 Warranted characteristics Trigger Acquisition Internal trigger 4 26 Level Maximum 0 dBfs Minimum 55 dBfs Frequency resolution Span 800 5 MHz span 1024 points Span 640 lt 2 MHz span 1024 points Span 160 2 MHz span 256 points Time resolution Same as the spectral frame update interval External trigger 4 30 Input voltage range 0t05V 3026 3 GHz Real Time Spectrum Analyzer Service Manual 1 5 Specifications Table 1 5 Warranted characteristics Installation requirements Characteristics Description Heat emission Maximum power 300 W Maximum line current 4 0 Arms at 50 Hz AC line source Primary circuit dielectric voltage withstand 15 s for 1 500 Vrms at 50 Hz Grounding impedance Verify the continuity of grounding connection by any suitable means between a representative part required to be grounding and attachment plug cap grounding pin 0 1 Q at 30 A Table 1 6 Warranted characteristics Environmental Characteristics Atmospherics Temperature Operating Non operating Relative humidity Operating Non operating Altitude Operating Non operating Description 10 C to 40 20 C to 60 C 20 to 80 no condensation Maximum wet bulb temperature 29 4 C
25. 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List Refer to Cables 10 on page 10 16 a 2 N lt I het Figure 10 3 Internal modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual 10 9 Mechanical Parts List Replaceable Parts List Fig amp Index Number 4 1 2 3 10 10 Tektronix Part Serial No Number 211 0945 XX 119 6047 XX 337 4188 XX 212 0223 XX 211 0871 XX 342 1053 XX 671 4712 XX 441 2168 XX 211 0941 XX 211 0965 XX 342 1051 XX 671 4713 XX 211 0871 XX 211 0871 XX 671 4710 XX 671 4642 XX 211 0871 XX 211 0965 XX 342 0163 XX Effective Serial No Discont d Qty Name amp Description 4 SCREW MACHINE M4X8MM L PNH STL MFZN C CROSS REC POWER SUPPLY INPUT 85 264VAC 47 63HZ OUT 24V 6 5A SHIELD POWER SUPPLY SCREW TAPPING NO 3 X 6MM L BDGH STL MFZN C TYPE 2 CROSS REC SCREW MACHINE M3X6MM L PNH STL ZN PL CROSS REC W FLAT 7MM OD amp LOCK WASHER INSULATOR DC POWER 1 CIRCUIT BOARD ASSY A11 DC POWER 1 CHASSIS TOP SCREW MACHINE M3X6MM L FLH STL MFZN C CROSS REC SCREW MACHINE M3X8MM L PNH STL MFZN C CROSS REC INSULATOR DC POWER 2 CIRCUIT BOARD ASSY A12 DC POWER 2 SCREW MACHINE M3X6MM L PNH STL ZN PL CROSS REC W FLAT 7MM OD amp LOCK WASHER SCREW MACHINE M3X6MM L PNH STL ZN PL CROSS REC W FLAT 7MM OD amp LOCK WASHER CIRCUIT BOARD ASSY A10 SUBPOWER CI
26. 5 to 90 no condensation Maximum wet bulb temperature 40 0 C Up to 4 5 km 15 000 ft Maximum working temperature decreases by 1 C at 300 m increments when the altitude exceeds 1 5 km Up to 15 km 50 000 ft Dynamics Random vibration Operating 0 27 g rms from 5 Hz to 500 Hz 10 minutes Non operating 2 28 g rms from 5 Hz to 500 Hz 10 minutes Shock Non operating 294 m s 3 0G half sine 11 ms duration three times in every axis direction 1 6 3026 3 GHz Real Time Spectrum Analyzer Service Manual Specifications Typical Characteristics This subsection contains tables that list the various typical characteristics which describe the 3026 Real Time Spectrum Analyzer Typical characteristics are described in terms of typical or average performance Typical characteristics are not warranted Table 1 7 Typical characteristics Amplitude Characteristics Description Input equivalent noise 140 dBm Hz at 1 GHz Spurious response lt 65 dBc Table 1 8 Typical characteristics Filter Characteristics Description Stopband attenuation 90 dB Bandpass ripple 0 2 dB Table 1 9 Typical characteristics Trigger Acquisition Characteristics Description Roll mode update rate 10 frames s Table 1 10 Typical characteristics Installation requirements Characteristics Description Surge current 30 A at 100 VAC 15 A at 200 VAC 3026 3 GHz Real Time Spectrum Analyzer S
27. 9 Lii RESI REN 8 8 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 100 0 270 GEE GE GE G na Figure 5 6 Calibration amp Set Constant menu e f Press the Execute side key to start the calibration Wait until the calibration completes It takes about 20 minutes On the Calibration amp Set Constant menu select Exec RF Spurious avoidance using the Up and Down side keys Press the Execute side key to start the calibration Wait until the calibration completes It takes about 20 minutes 6 Check the calibration result Confirm that no error is displayed on the screen after completing the calibration 7 Disconnect the hookup a Power off the 3026 and the signal generator b Disconnect the N N cable and the GPIB cable 5 10 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures Preparing the flatness correction file This procedure measures the flatness correction data for the HP8648 signal generator and save the data to a floppy disk You must create or update the flatness correction file when one of these conditions is met m When you calibrate the 3026 initially m When you calibrate the HP8648 signal generator m When you use another HP8648 signal generator m When one year has elapsed from the last update of the file for the generator There are two methods to prepare the flatness correction files m Method 1 Usin
28. Change information if any is located at the rear of this manual Tektronix part numbers contain two digits that show the revision level of the part For most parts in this manual you will find the letters XX in place of the revision level number Part number revision level Revision level may show as XX N eX 670 7918 03 670 7918 XX When you order parts Tektronix will provide you with the most current part for your product type serial number and modification if applicable At the time of your order Tektronix will determine the part number revision level needed for your product based on the information you provide 3026 3 GHz Real Time Spectrum Analyzer Service Manual 10 1 Mechanical Parts List Module Servicing Modules can be serviced by selecting one of the following three options Contact your local Tektronix service center or representative for repair assistance Module Exchange In some cases you may exchange your module for a reman ufactured module These modules cost significantly less than new modules and meet the same factory specifications For more information about the module exchange program call 1 800 TEK WIDE extension 6630 Module Repair and Return You may ship your module to us for repair after which we will return it to you New Modules You may purchase replacement modules in the same way as other replacement parts Using the Replaceable Parts List This section contains a list of the mechani
29. description Purpose 1 Frequency counter Range 10 MHz Anritsu MF1603A option 01 Checking frequency Aging rate lt 5 x 10 9 day 2 Signal generator 10 kHz to 3 GHz Variable amplitude HP8648C option 1E5 Checking RF flatness from 70 dBm to 13 dBm into 50 Accuracy lt 1 dB Function FM 3 Signal generator Output voltage gt 10 dBm at 25 MHz Anritsu MG3641A Checking C N SSB phase noise lt 110 dBc Hz at 10 kHz offset 4 Function generator Frequency range 100 Hz to 1 MHz Sony Tektronix AFG310 Checking frame update Amplitude range 0 to 5 Vp p into interval 500 5 RFpower meter 10 MHz to 3 GHz HP437B Checking reference level 6 RF power sensor 10 MHz to GHz RF Flatness lt 3 HP8481A Checking reference level 7 PF step attenuator 10 dB step Accuracy lt 3 HP8496B Checking reference level Range gt 1 GHz 8 PC Windows 95 or 98 GPIB board National Instruments Software based test LabVIEW version 5 0 or later LabVIEW and GPIB board recommended 9 BNC cable 50 Q 36 in male to male BNC Tektronix part number Signal interconnection connectors 012 1341 00 10 N N cable 50 36 in male to male N Signal interconnection two required connectors 11 GPIB cable 1 2m double shielded Tektronix part number Software based test two required 012 0991 00 12 Terminator Impedance 50 connectors female Tektronix part number Signal termination for the BNC input male BNC output 011 0049 01 10 MHz reference output test
30. A6 FFT board A8 Memory board J05 J04 J03 J02 J14 W24 W25 W27 44 IDE 1 COM2 Front FLOPPY ront area LCD Inverter unit LCD interface board J23 J500 Parallel port I W100 5 7 CPU board LCD unit VGA port um W22 Back i 2 Light w15 10BASE T port W J101 Key board Power supply W36 e DC 24V 9A W920 A10 Sub Power board fis AC line filter l T oe Figure 9 2 Interconnect diagram 9 5 9 6 3026 Service Manual Mechanical Parts List i GE Mechanical Parts List This section contains a list of the replaceable modules for the 3026 Use this list to identify and order replacement parts Parts Ordering Information Part Number Revision Level Replacement parts are available through your local Tektronix field office or representative Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements Therefore when ordering parts it is important to include the following information in your order m Part number m Instrument type or model number m Instrument serial number m Instrument modification number if applicable If you order a part that has been replaced with a different or improved part your local Tektronix field office or representative will contact you concerning any change in part number
31. Board 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the modules to be removed in the locator diagram Board modules Figure 6 5 page 6 16 c Do the procedure FFT Board A7 DDC Board A8 Memory Board and CPU Board that precedes this procedure to remove those modules d Do the procedure Hard Disk Drive and Solid State Disk on page 6 34 to remove those modules 2 Orient instrument Set the analyzer so its left side is down on the work surface and its right side is facing you 3 Remove the A1 Mother board a Unplug the cables at these connectors on the top side of A1 Mother board J02 J03 J04 JOS 06 J07 08 J17 and J18 See Figure 6 23 Use this hole to disconnect d the floppy disk cable and a external trigger input cable e ul From EXT TRIG c 5 input to J17 5e N a dco pon gt From floppy disk drive to J07 up Thermo sensor to J18 From COM2 on CPU q RS board to J05 From LCD on CPU From hard disk uem GA board to J05 drive to J06 From keyboard to J08 From IDE on CPU board to J02 Figure 6 23 A1 Mother board removal Top side 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures b Unplug the cables at these connectors on the bottom side of A1 Mother board J09 J10 J11 J12 J13 and J14 See Figure 6 24 c Remove the seven
32. Disabled D8000 DBFFF Shadow Disabled Boot Up Floppy Seek Enabled DCO00 DFFFF Shadow Disabled Boot Up NumLock Status On Boot Up System Speed High IDE HDD Block Mode Enabled Gate AZO Option Fast Typematic Rate Setting Disabled Tgpematic Rate Chars Sec 6 Typematic Delay Hsec 250 Security Option Setup PS 2 mouse function control Enabled ESC Quit thee Select Item OS Select For DRAN gt 64MB 052 Fi Help P PD s Modify FS Old Values Shift F2 Color F6 Load BIOS Defaults P Load Setup Defaults 3026 3 GHz Real Time Spectrum Analyzer Service Manual Accessing the BIOS ROM ISA BIOS 2C4L6AKK CHOS SETUP UTILITY AWARD SOFTWARE INC CYLS HEADS PRECOMP LANDZONE SECTORS NODE Drive C t Hb Select Drive C Option N Skip H PTIONS SIZE CYLS HEADS PRECOMP LANDZONE SECTORS MODE 20 3 3 32 9 4 63 LBA 1 3 48 4 69535 47 32 NORMAL Note Some OSes like SCU UNIX must use NORMAL for installation ESC Skip ROM ISA BIOS 2C4L6AKK CMOS SETUP UTILITY AWARD SOFTWARE INC STANDARD CMOS SETUP BIOS FEATURES SETUP CHIPSET FEATURES SETUP POWER MANAGEMENT SETUP PASSWORD SETTING IDE HDD AUTO DETECTION SAVE amp EXIT SETUP EXIT WITHOUT SAVING LOAD BIOS DEFAULTS LOAD SETUP DEFAULTS Enter Password Esc Quit Select Item F10 Save amp Exit Setup Shif
33. GHz Real Time Spectrum Analyzer Service Manual 1 13 Specifications Table 1 19 Certifications and compliances Cont Characteristic Description Installation Overvoltage Category Terminals on this product may have different installation overvoltage category designations The installation categories are CAT III Distribution level mains usually permanently connected Equipment at this level is typically in a fixed industrial location CAT II Local level mains wall sockets Equipment at this level includes appliances portable tools and similar products Equipment is usually cord connected CAT Secondary signal level or battery operated circuits of electronic equipment Pollution Degree A measure of the contaminates that could occur in the environment around and within a product Typically the internal environment inside a product is considered to be the same as the external Products should be used only in the environment for which they are rated Pollution Degree 1 Pollution Degree 2 Pollution Degree 3 Pollution Degree 4 No pollution or only dry nonconductive pollution occurs Products in this category are generally encapsulated hermetically sealed or located in clean rooms Normally only dry nonconductive pollution occurs Occasionally a temporary conductivity that is caused by condensation must be expected This location is a typical office home environment Temporary condensation occur
34. Internal modules Figure 6 4 page 6 15 2 Orient instrument Set the analyzer so its left side is down on the work surface and its bottom is facing you 3 Open the down converter chassis See Figure 6 18 a Disconnect the SMA connector from RF INPUT using the 3 6 inch wrench Refer to the Procedure Front Panel Connectors on page 6 28 b Unplug the cable at J100 on the A5 Baseband board c Remove the six screws securing the down converter chassis It is not necessary to remove the screw at hinge Down converter chassis To RF INPUT Figure 6 18 Opening the down converter chassis 6 34 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures d Open the down converter chassis gently 4 Remove the disk drive bracket a Disconnect the flat cable of the hard disk and solid state disk See Figure 6 19 b Remove the three screws securing the disk drive bracket to the main chassis on the bottom side See Figure 6 18 c Liftup the hard disk drive and solid state disk with the bracket 5 Remove the hard disk drive and solid state disk See Figure 6 19 a Remove the three screws securing the solid state disk to the bracket Then move the solid state disk away b Remove the three screws securing the hard disk drive to the bracket Then move the hard disk drive away 6 Reinstallation Do in reverse order steps 3 to 5 to rein
35. Prerequisites 4 8 The tests in this section comprise an extensive valid confirmation of perfor mance and functionality when the following requirements are met The cabinet must be installed on the 3026 You must have performed and passed the procedures under Self Tests found on page 4 3 A signal path compensation must have been done within the recommended calibration interval and at a temperature within 3 C of the present operating temperature If at the time you did the prerequisite Self Tests the temperature was within the limits just stated consider this prerequisite met The 3026 must have been last adjusted at an ambient temperature between 15 C and 425 C must have been operating for a warm up period of at least 20 minutes and must be operating at an ambient temperature between 10 C and 40 C The warm up requirement is usually met in the course of meeting the Self Tests prerequisites listed above The frequency counter refer to page 4 9 must have been operating for a warm up period of at least 24 hours 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification Equipment Required Table 4 2 Test equipment Item number and These procedures use external traceable signal sources and signal measurement instrument to directly check warranted characteristics The required equipment list follows this introduction Minimum requirements Example
36. Service Manual xiii Service Safety Summary xiv 3026 3 GHz Real Time Spectrum Analyzer Service Manual Preface This is the service manual for the 3026 Real Time Spectrum Analyzer The manual contains information needed to service the analyzer to the module level Manual Structure This manual is divided into sections such as Specifications and Theory of Operation Further some sections are divided into subsections such as Product Description and Removal and Installation Procedures Sections containing procedures also contain introductions to those procedures Be sure to read these introductions because they provide information needed to do the service correctly and efficiently The following contains a brief description of each manual section Specifications contains a description of the analyzer and the characteristics that apply to it Operating Information includes general information and operating instructions Theory of Operation contains circuit descriptions that support service to the module level Performance Verification contains procedures for confirming that the analyzer functions properly and meets warranted limits Adjustment Procedures contains a collection of procedures for adjusting the analyzer to meet warranted limits Maintenance contains information and procedures for performing preventive and corrective maintenance of the analyzer These instructions include cleaning module removal and installation
37. Span and Center Frequency Test 4 20 Frame Update Interval Test 3 22 22 25 4 23 Internal Trigger Test 2 cao o 2 alas LEE RES 4 26 External Trigger Test asura sense E pele wees ping EE ER 4 30 EIN Test see een een we ek 4 32 RF Reference Level fest uc Ree RC ee sb GR ADS 4 34 RE Fl tness Testi en ieh hr 4 38 Test Record A essen PREUEPUPENePRERE eR ERA 441 Adjustment Procedures Adjustment Procedures 5 1 Requirements for Adjustments 5 2 Equipment Required ee eI EI ee RET 5 3 Adjustments 4 0 an 2 cho CR Tea eh Eee UU 5 4 Maintenance Maintenance nee 6 1 Related Maintenance Procedures 6 1 Preparation 2 sr aah Nedstat 6 2 Inspection and Cleaning 5 6 4 Removal and Installation Procedures 6 9 Preparation esie tent nee 6 9 Access PIOCedUre ue a ETE UH E HEUS Vs 6 13 Procedures for External Modules 6 19 Procedures for Internal Modules 6 30 Procedures for Board Modules 6 38 Procedures for Power Supply Modules 6 48 Procedures for Rear Panel Modules 6 55 Troubleshooting
38. The FIFO system is divided into two parts One handles frequency domain data and the other time domain data This improves the operating rate and allows real time analysis up to 2 MHz span Time domain data from the A7 DDC board branches into the two parts The time part has a single FIFO from which time domain data is sent unchanged to the memory board The frequency part has a two stage FIFO arrangement The frequency domain data is sent from the second output FIFO to the Memory board The A8 Memory board stores the acquired I Q data and controls signal processing hardware It consists of 8 blocks Acquisition memory made up with data banks 0 1 2 and 3 Address counter FPGA Trigger memory Trigger generating logic circuit FPGA External trigger input circuit Local controller FPGA Clock generating circuit GPIB interface Acquisition Memory The acquisition memory consists of four data banks 0 1 2 and 3 which have a capacity of 2 M bytes each total 8 M bytes This memory stores the I Q data for frequency and time domain occupying 4 M bytes each Address Counter FPGA The address counter generates addresses for one FFT point bin or one time domain point and maps addresses on the memories Trigger Memory The trigger memory is written under the firmware control from the 486 CPU board The trigger conditions are created by a user who edits the trigger mask patterns using the input menu The trigger memory da
39. The above steps complete the preparation for data acquisition in the Block mode Acquiring Data 13 Press the ROLL BLOCK button HARD O cory HDD MARKER TOGGLE ROLL O BLOCK ROLL BLOCK button 2 SELECT Figure 2 11 ROLL BLOCK button 3026 3 GHz Real Time Spectrum Analyzer Service Manual 2 15 Operating Instructions 2 16 During data acquisition a dialog box titled Processing Data Please Wait is indicated on the display After the completion of data acquisition the waveform is displayed See Figure 2 12 Unlike the Roll mode there is noticeable delay before data is displayed in the Block mode This is because data is displayed after sufficient data is acquired to match the length specified by the block size and block count Once the all the data is acquired acquisition ends and the data is displayed BLK CA F MAG CH Lib CF 16 888 888 Hz SPAN 2 MHz REF 8 8 dBm 18 8 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 E a tA 12 2 CECE D Figure 2 12 Data acquisition in the Block mode When data has been acquired in the Block mode return the data acquisition mode to the Roll mode 14 Press the ROLL BLOCK button The LED at the top left of the button turns off which indicates that the data acquisition mode has changed to the Roll mode 15 Press the START STOP button The LED
40. and fault isolation to the module Options contains information on servicing factory installed options Electrical Parts List contains a statement referring you to Mechanical Parts List where both electrical and mechanical modules are listed Diagrams contains an block diagram and an interconnection diagram Mechanical Parts List includes a table of all replaceable modules their descriptions and their Tektronix part numbers 3026 3 GHz Real Time Spectrum Analyzer Service Manual XV Preface Manual Conventions This manual uses certain conventions that you should become familiar with Some sections of the manual contain procedures for you to perform To keep those instructions clear and consistent this manual uses the following conven tions m Names of front panel controls and menus appear in the same case initial capitals all uppercase etc in the manual as is used on the analyzer front panel and menus Front panel names are all upper case letters for example DISPLAY MEASURE SETUP etc m Instruction steps are numbered unless there is only one step Modules Throughout this manual any replaceable component assembly or part of the analyzer is referred to generically as a module In general a module is an assembly like a circuit board rather than a component like a resistor or an integrated circuit Sometimes a single component is a module for example the chassis of the analyzer is a module Safety Symbols a
41. at the top left of the button turns on and data acquisition is resumed 3026 3 GHz Real Time Spectrum Analyzer Service Manual Operating Instructions Using Dual Markers SUMMARY This section describes the procedure of using dual markers to measure the frequency difference between two peaks in the spectrum Before starting the operation return the span setting to 10 MHz 16 Press the SPAN button 17 Press the Span 10 MHz bottom button Displaying Dual Markers Place markers on the waveform as follows 18 Press the MARKER button 19 Press the Marker Setup bottom button 20 Press the Dual Marker side button This operation places two markers on the waveform a x marker MARKER and a marker MARKER See Figure 2 13 Of these two markers the x marker is highlighted and the marker is dimmed This indicates that the x marker is the active one the marker which can be moved by the general purpose knob or the buttons A n MARKER1 FREQ F MRG CF 16 888 888 Hz SPAN 18 MHz REF 8 8 dBm 9 8 MARKER1 15 993 750 00 Hz SER 44 51 dBm DELTR a 6 250 00 Hz 2 38 dB 20 0 i 08 88 08 888 008 30 0 40 0 50 0 60 0 70 0 80 0 90 0 100 0 2 00 629 829 69 ki 2 029 0129009 ma Figure 2 13 Displaying dual markers 3026 3 GHz Real Time Spectrum Analyzer Service Manual 2 17 Operating Instructions 2 18 Moving Markers Next move the two
42. being displayed Frequency 21 4 MHz Level Approx 13 dB Replace the U100 Down Converter Replace the A5 Baseband board Figure 6 33 Troubleshooting procedure 2 Signal processing modules 6 64 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting Set the 3026 as follows Input mode Baseband Center frequency 5 MHz Span 2 MHz Reference level 0 dBm Set the signal generator as follows and connect it to the 3026 RF input Refer to Performance Verification Frequency 5 MHz Level 10 dBm Probing pin 8 of U514 on the A5 Baseband board see Figure 6 39 measure the frequency using another spectrum analyzer and a FET probe Is the following stable No spectrum being displayed Frequency 4 20 MHz Yes the display seem Yes The 3026 is OK Unplug the coaxial cable at J6 the third IF output connector of the U100 Down Converter See Figure 6 43 Using another spectrum analyzer measure the connector output Is the following stable spectrum being displayed Frequency 5 MHz Level Approx 10 dB No Replace the U100 Down Converter Replace the A5 Baseband board Does Replace the A7 DDC board or the A6 FFT board or the A8 to be OK Memory board 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 65 Troubleshooting This procedure helps you determine whether the clock System is
43. calibrating the power sensor e Turn on POWER REF and execute the calibration f Disconnect the RF input of the power sensor from the reference output of the power meter 3026 3 GHz Real Time Spectrum Analyzer Service Manual 5 15 Adjustment Procedures 2 Install the test hookup and preset the instrument controls a Turn off the power meter signal generator and PC b Connect RF Output of the signal generator through the N adapter followed by the N N coaxial cable to RF Input of the power sensor See Figure 5 12 PC Signal generator g Power meter PIB cable L GPIB cable N adapter Power sensor N N coaxial cable Figure 5 12 Test hookup c Connect the GPIB cables at the signal generator power meter and PC rear panel d Turn on the the signal generator power meter and PC e Setthe GPIB address for the signal generator to 1 while that for the power meter to 13 f Install the SG flatness measurement program on PC if not yet installed m Copy the file SGFLATFILE EXE Item 14 to the PC hard disk anywhere for example under the C TEMP 3026 directory 3 Let the instruments warm up Allow one hour warm up period before you go to the next step 5 16 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures 4 Perform the auto
44. controls o Figure 5 9 Test hookup N N coaxial cable GPIB cable GPIB cable Power off the power meter signal generator and spectrum analyzer Connect RF Output of the signal generator through the N adapter followed by the N N coaxial cable to RF Input of the power sensor See Figure 5 9 Spectrum analyzer y 0 I Power meter 0000 Cie e O N adapter Power sensor Connect the GPIB cables at the signal generator power meter and spectrum analyzer rear panel Power on the the signal generator power meter and spectrum analyzer Set the GPIB address for the signal generator to 1 while that for the power meter to 13 3 Let the instruments warm up Allow 20 minute warm up period before you go to the next step 4 Perform the measurement a Press CONFIG Mode gt Load gt Dir and select the directory Bin using the general purpose knob Press Expand Dir gt File and select the file cal cfd using the general purpose knob Press OK Press View C gt Debug gt SG Flatness 3026 3 GHz Real Time Spectrum Analyzer Service Manual 5 13 Adjustment Procedures 5 Save the data on a floppy disk a Insert the adjustment floppy disk into the analyzer disk drive b Press Copy Flatness to F
45. dBm 21 dBm 19 dBm 20 dBm 31 dBm 29 dBm 30 dBm 41 dBm 39 dBm 40 dBm 50 dBm 51 dBm 49 dBm 50 dBm 60 dBm 61 dBm 59 dBm RF flatness test Low limit Test result High limit Flatness 2 dB 2 dB 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 45 Performance Tests 4 46 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures a ww Adjustment Procedures This section contains information needed to adjust the 3026 Real Time Spectrum Analyzer The section is divided into three subsections m General information about adjusting the analyzer m A list of equipment required to perform the adjustments m The written procedures for adjusting the analyzer Purpose This procedure is used to return the analyzer to conformance with its Warranted Characteristics as listed in Section 1 Specification It can also be used to optimize the performance of the analyzer For performance verification proce dures refer to Section 4 Performance Verification Adjustment Interval Generally these adjustments should be done every 12 months Adjustment After Repair After the removal and replacement of a module due to electrical failure do the adjustment procedures in this section Adjustments There are three adjustment procedures as listed in Table 5 1 Table 5 1 Adjustments Adjustments Refer to Clock frequency adjustment Page 5 4 Execution of auto calibration Pag
46. measurement a On the PC screen double click the SGFLATFILE EXE icon to run the auto measurement program b Click the arrow button on the upper left corner to start the measure ment see Figure 5 13 c Inthe dialog box that appears enter the file name SFLATOFETXT by default this file will be placed in the same directory as the file SGFLATFILE EXE in this example C TEMP 3026 Click this button to start the measurement Figure 5 13 Running the SG flatness measurement program on PC 3026 3 GHz Real Time Spectrum Analyzer Service Manual 5 17 Adjustment Procedures d Wait until the measurement completes It takes almost one hour The program measures the flatness of signal generator at amplitude 5 0 dBm and frequency 10 MHz to 3 GHz in 1 MHz step Then it writes the results into the file SFLATOFF TXT e Terminate the SG flatness measurement program by selecting Close from the menu f Open the file SFLATOFF TXT in a text editor such as Notepad and check the content It looks like this 0 0 11 1 2 3 1231 0 610000 1232 0 610000 1233 0 610000 1234 0 610000 1235 0 610000 2997 1 340000 2998 1 350000 2999 1 340000 3000 1 350000 The left side represents the frequency in MHz and the right side represents the flatness in dB NOTE If any flatness values are out of 3 dB possibly cables and their connections are not correct Reconnect
47. reference output of the power meter See Figure 4 16 on the next page e Turn on POWER REF and execute the calibration f Disconnect the RF input of the power sensor from the reference output of the power meter 4 34 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification Power reference Power meter output Figure 4 16 Hookup for calibrating the power sensor 2 Preset the instrument controls a Set the 3026 controls Press the START STOP button to stop data acquisition Press the ROLL BLOCK button to select the Roll mode Press DISPLAY A Spectrum button Press SETUP gt Range gt 10M 3GHz Press SETUP gt FFT gt FFT Pts and select 1024 Press SETUP gt FFT gt Window Blackman Harris Press the FREQ button and set the frequency using the keypad Press SETUP gt Average Peak Hold gt Average RMS Press 1 0 0 and ENTER to set the average times to 100 Press DISPLAY MENU gt Screen Trace gt Active Average Peak Hold b Perform self calibration Press UTILITY gt Diag Cal gt Execute RF Cal Set the signal generator controls Frequency 25 MHz RF output On 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 35 Performance Verification 3 Set the signal generator output a Hook up the instruments See Figure 4 17 m Connect the signal generator output through a 50
48. screws attaching the Mother board to the chassis using a screwdriver with a size 2 Phillips tip See Figure 6 23 d Lift the board up and away from the chassis to complete the removal W100 from power supply to J14 W350 from poe Wa20from 1200 313 LA A11 to J12 Back side of A1 5 22 From the display unit dj Figure 6 24 A1 Mother board removal Bottom side 4 Reinstallation a Do in reverse order step 3 to reinstall the Al Mother board b Referto Hard Disk Drive and Solid State Disk on page 6 34 to reinstall those modules c Refer to FFT Board A7 DDC Board AS Memory Board and CPU Board to reinstall those modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 45 Removal and Installation Procedures 6 46 Down Converter and A5 Baseband Board Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 and a 6 inch open end wrench Items 8 b Locate the modules to be removed in the locator diagram Board modules Figure 6 5 page 6 16 Orient instrument Set the analyzer so its left side is down on the work surface and its bottom is facing you Open the down converter chassis Do the procedure Open the down converter chassis step 3 on page 6 34 Orient instrument Set the analyzer so its rear is down on the work surface and its bottom is facing you Remove the A5 Baseband
49. set HD read out jitter etc Analysis of momentary noise Mixed noise EMI measurement etc Multi path measurement Measurement of electric wave environment Electric wave interference Radar interference Electric wave analysis Burst signals 3026 3 GHz Real Time Spectrum Analyzer Service Manual Specifications The specifications on the 3026 Real Time Spectrum Analyzer can be classified into three sub sections Warranted Characteristics Typical Characteristics and Nominal Traits Certifications and Compliances are also found at the last page in this section Warranted Characteristics This section lists the various warranted characteristics that describe the 3026 Real Time Spectrum Analyzer Electrical and environmental characteristics are also included Warranted characteristics are described in terms of quantifiable performance limits which are warranted As stated above this section lists only warranted characteristics A list of typical characteristics starts on page 1 7 Performance Conditions The performance limits in this specification are valid with these conditions m The analyzer must have been calibrated adjusted at an ambient temperature between 4 20 C and 430 m The analyzer must be in an environment with temperature altitude humidity and vibration within the operating limits described in these specifications m The analyzer must have had a warm up period of at least 20 minutes m The analyzer m
50. the cables and perform the measurement again g Insert the floppy disk Item 15 for storing the flatness correction data h Save the file SFLATOFF TXT to the floppy disk 5 Disconnect the hookup a Eject the floppy disk b Turn off the signal generator and the power meter c Disconnect the GPIB cables d Disconnect the power sensor and the N N cable 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures Reconfiguration of This procedure updates the down converter configuration file when replacing the Down Converter down converter Equipment One signal generator Item 2 Required bn One 50 Q N N coaxial cable Item 8 1 Note the m and o values They are indicated on the labels on the down converter a Power off the analyzer b Referring to Removal and Installation Procedures in Section 6 open the down converter chassis Two same labels Figure 5 14 Label location 3026 3 GHz Real Time Spectrum Analyzer Service Manual 5 19 Adjustment Procedures 5 20 c Locate the label that indicates the serial number of the down converter and m and o values See Figure 5 14 d Note the serial number and m and o values e Reinstall the down converter chassis and the cabinet using the reverse of substep b f Poweron the analyzer 2 Edit the RF DAC setting a Press UTILITY Front gt Diag Cal Bottom gt Cal a
51. the trim ring only carefully follow the instructions given when reinstalling the EMI gaskets and or fh CAUTION To prevent exceeding the environmental characteristics for EMI the cabinet 2 Remove EMI gaskets Use a pair of needle nose pliers to remove the four sections of EMI gaskets from the groove in the trim ring 3 Reinstall EMI gaskets Press the EMI gaskets back into the groove in the trim ring 6 24 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Trim Ring when removing the trim ring grasp its back edge and vigorously flex it upward before 257 pulling it forward Trim ring 20000 Q 2 UA UD QOOO 2 U NN Menu buttons Figure 6 11 Trim ring and menu buttons removal Front Panel Assembly NOTE This procedure includes removal and reinstallation instructions for the front panel module and front panel buttons Unless either of those modules are being serviced do not do step 4 Further disassembly of front panel assembly 1 Assemble equipment and locate modules to be removed a Have handy a flat bladed screwdriver Item 4 and a 0 05 inch and le inch hex wrench Items 5 and 6 b Locate the module to be removed in the locator diagram External modules Figure 6 3 page 6 14 Do the procedure Trim Ring and Menu Buttons on page 6 24 to remove the trim ring only
52. use the fault isolation procedures found in Troubleshooting part of section 6 Maintenance To remove and replace any failed module follow the instructions in Removal and Installation Proce dures also part of section 6 After isolating a faulty module replace it with a fully tested module obtained from the factory Section 10 Mechanical Parts List contains part number and ordering information for all replaceable modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual xix Preface XX 3026 3 GHz Real Time Spectrum Analyzer Service Manual Specifications EEUU wj Product Overview The 3026 is a portable real time 3 GHz spectrum analyzer with real time frequency analysis functions The incorporated 3 GHz down converter enables you to perform spectrum analysis time domain analysis and analog modulation analysis of Radio Frequency RF signals without connecting any external devices The 3026 with the adoption of new architecture can acquire time and frequency domain data simultaneously It can also accurately capture various kinds of signals with a wide variety of triggering functions Real time trigger functions in frequency domain allow you to trigger on instantaneous events such as the starting point of a burst signal Using the trigger functions in time domain triggering is available on impulse noises which are barely captured in frequency domain In addition the 3026 provides measurement functions that
53. 0 on the A7 DDC board b Remove the one screw attaching the DDC board to the main chassis using a screwdriver with a size 2 Phillips tip c Liftthe board up away from the Mother board to complete the removal 4 Reinstallation a Do in reverse order step 3 to reinstall the A7 DDC board b Referto Board Retainer and Shield Cover on page 6 39 and Rear Panel on page 6 56 to reinstall those modules A8 Memory Board 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the module to be removed in the locator diagram Board modules Figure 6 5 page 6 16 c Do the procedure Board Retainer and Shield Cover on page 6 39 and Rear Panel on page 6 56 to remove those modules 2 Orient instrument Set the analyzer so its left side is down on the work surface and its right side is facing you 3 Remove the A8 Memory board See Figure 6 22 a Unplug the cable at J1200 on the Memory board b Remove the one screw attaching the Memory board to the main chassis using a screwdriver with a size 2 Phillips tip c Liftthe board up away from the Mother board to complete the removal 4 Reinstallation a Doin reverse order step 3 to reinstall the A8 Memory board b Referto Board Retainer and Shield Cover on page 6 39 and Rear Panel on page 6 56 to reinstall those modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 41 Removal an
54. 026 3 GHz Real Time Spectrum Analyzer Service Manual 2313 Operating Instructions 6 Press the amp button in the DISPLAY area The upper half is changed from spectrogram display to waterfall display I ROLL F MAG CF 16 886 000 Hz ALAJ 11 00 02129209 2X 029 029009 Da FZMAG 100 0 2 07 639 829 89 ri 2X 09 029009 ma Figure 2 10 Waterfall display and spectrum display Next return the display to the previous condition 7 Press the SELECT button The color of the top part of the lower scale changes from gray to blue 8 Press the button in the DISPLAY area 2 14 3026 3 GHz Real Time Spectrum Analyzer Service Manual Operating Instructions Using the Block Mode to Acquire Data SUMMARY This section describes how to acquire data by using the Block mode In the Block mode all the data is acquired and then it is displayed unlike the Roll mode in which each frame it displayed directly after it is acquired Changing the Basic The Block mode is valid for a span setting of 2 MHz or lower Therefore first Settings change the span setting In addition change the trigger mode to auto mode because the trigger function is not used in this example 9 Press the Span 2 MHz bottom button Alternatively the general purpose knob or value entry keys may be used 10 Press the TRIG button 11 Press the Mode bottom button 12 Press the Trig Mode side button to select Auto
55. 038 10 sA b 1 i 02 stop h RT In ei l 2 o GATTA N step Amp 10 1 1 I 1 1 acio 500 1000 1500 2000 2500 3000 f T m MEOS m l 3026 adrs hp8648c adrs 3000 00 een mint it 9 99 qm 1 MA n Em gt T x 1000 MAX Value MIN Value READ SG Parameter Value READ SG Parameter 10dBm A FO33 ALL Line WAIT s 7 Freg Amplitude Freq MHz dBm 4 Ada 147 Figure 4 20 Running the RF flatness check program on PC 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 39 Performance Verification 4 40 d In the dialog box that appears click the OK button e Waituntil the measurement completes It takes almost one hour The program measures the flatness at frequency 10 MHz to 3 GHz in 1 MHz step f The flatness measurement results are shown on the freq vs ampl graph see Figure 4 20 Check that the flatness is within 2 0 dB g Terminate the RF flatness check program by selecting Close from the menu Disconnect the hookup a Ejectthe floppy disk b Turn off the generator and 3026 c Disconnect the GPIB cables d Disconnect the N N cable 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Tests Test Record Photocopy the following 4 pages and use them to record the performance test results for your analyzer 3026 3 GHz Real Tim
56. 16 888 888 Hz SPAN 2 MHz REF 8 8 dBm Figure 2 18 Waveform display before triggering Acquiring Data Next use the created trigger mask to detect a trigger condition 34 Press the ROLL BLOCK button When you press the button a small window appears at the center of the display indicating the system is waiting for a trigger At this moment the message Input waveform data is not acquired is indicated on the top left of the scale in red 35 Turn on the CH2 output of the signal generator Soon a trigger will occur and the waveform is displayed 3026 3 GHz Real Time Spectrum Analyzer Service Manual 2 23 Operating Instructions Changing the Display Frame 2 24 SUMMARY This section describes how to change the display frame of the data acquired in the Block mode and to examine how the waveform changes with time In this tutorial you can use those data acquired by the Trigger and Mask Pattern on page 2 20 In the section of Trigger and Mask Pattern the mask pattern trigger function is used to acquire data in the Block mode In the Block mode acquired data fills the number of frames specified by the block size and block count The block size is set to 20 by the initial setting factory default thus 20 frames of data will be acquired The following steps change the frame from the acquired data lies that is displayed This is done by changing the frame on which the marker To do this first turn a marker on
57. 18 RF flatness check LabVIEW version 5 0 or later Checking RF flatness program recommended 14 SG flatness floppy disk Created or updated with the proce 3 5 inch 720 K or 1 44 M Storing flatness correction byte DOS compatible floppy disk dures described on page 5 11 data for the HP8648 signal generator Used for the RF flatness test only The test is performed by running the RF flatness check program 3026FREQ EXE in LabVIEW on PC The file can be downloaded from the Tektronix webpage found at http www tektronix com 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification 10 MHz Reference Output Test This procedure checks whether 10 MHz reference output frequency error is within the specified range Equipment One frequency counter Item 1 Required 1 One 50 Q BNC coaxial cable Item 9 One 50 Q terminator Item 12 Prerequisites See page 4 8 3026 rear Frequency counter O 10 MHz REF OUTPUT 50 Q terminator 50 Q BNC coaxial cable Figure 4 3 Initial test hookup 1 Install the test hookup and preset the instrument controls a Hook up the frequency counter Connect 10 MHz REF OUTPUT of the 3026 through a 50 precision coaxial cable and a 50 Q precision terminator to INPUT A of the counter See Figure 4 3 b Set t
58. 26 3 GHz Real Time Spectrum Analyzer Service Manual 6 55 Removal and Installation Procedures AC Line Filter Rear Panel 6 56 m Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the module to be removed in the locator diagram Rear panel modules Figure 6 7 page 6 18 Orient instrument Set the analyzer so its bottom is down on the work surface and its rear is facing you Remove the AC line filter See Figure 6 30 a Unplug the power cable b Remove the one screw securing the ground lead to the rear chassis c Remove two screws securing the AC line filter to the rear chassis Reinstallation Do in reverse order step 3 to reinstall the AC line filter Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 and 5 mm nut driver Item 12 b Locate the module to be removed in the locator diagram Rear panel modules Figure 6 7 page 6 18 Orient instrument Set the analyzer so its bottom is down on the work surface and its rear is facing you Remove the GPIB connector cover Use a 5 mm nut driver to remove the two nut attaching the GPIB connector cover to the rear cover See Figure 6 30 Remove the rear cover Using a screwdriver with a size 2 Phillips tip remove the four screws securing the rear panel to the main chassis See Figure 6 30 Reinsta
59. 4153 XX 174 4152 XX 174 4159 XX 174 4158 XX 174 4163 XX 174 4162 XX 174 4161 XX 174 4142 XX 174 4160 XX 174 4144 XX 174 4143 XX 174 4147 XX 174 4151 XX 174 4149 XX 174 4150 XX 174 4145 XX 174 4157 XX 174 4156 XX 174 4146 XX Effective Serial No Discont d Qty Name amp Description 1 CA ASSY RF 500HM COAX 40CM L SMB STR TO SMB RTANG W10 CA ASSY RF 500HM COAX 26CM L 5D 2V SMB STR TO SMB RTANG W12 CA ASSY RF 500HM COAX 12CM L 1 5D 2V SMB STR TO SMB RTANG W13 CA ASSY SP ELEC 15 26AWG 15CM L W VGA CONN W14 CA ASSY SP ELEC 8 26AWG 24CM L W15 CA ASSY SP ELEC 50 26AWG 10CM L W CONN W16 CA ASSY SP ELEC 44 28AWG 15CM L RIBBON 1MM PITCH W24 CA ASSY SP ELEC 34 28AWG 14CM L FLAT W25 CA ASSY SP ELEC 40 28AWG 25CM L FLAT W26 CA ASSY SP ELEC 10 28AWG 14CM L FLAT W27 CA ASSY SP ELEC 26 160MM L FLAT FLEX W28 CA ASSY SP ELEC 44 28AWG 20CM L FLAT 1MM PITCH W 3 CONNECTORS W29 CA ASSY SP ELEC 44 28AWG 15CM L RIBBON 1MM PITCH W33 CA ASSY SP ELEC 7 22AWG 32CM L RIBBON W35 CA ASSY RF 500HM COAX 35CM L 1 5D 2W BNC TO SMB STR W37 CA ASSY RF 500HM COAX 20CM L 1 5D 2W BNC TO SMB STR W38 CA ASSY SP ELEC 2 26AWG 16CM L 2 N 8 N W100 CA ASSY SP ELEC 6 22AWG 50CM L RIBBON W320 CA ASSY SP ELEC 10 22AWG 55CM L RIBBON W330 CA ASSY SP ELEC 7 22AWG 34CM L W900 Mfr Code 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009
60. 5V standby DC output converted from 100 to 250 V AC for the power control circuitry on the A1 Mother board in only a small amount to the control logic The DC Power 1 board has two DC DC Converter units It generates two voltages from 424 V DC 12 V 4 2 A DC max 5 V 20 A DC max The power is supplied to these modules Hard disk drive Silicon hard disk unit Floppy disk unit LCD display unit A Mother board A6 FFT board A7 DDC Board A8 Memory board CPU board with a fan 3026 3 GHz Real Time Spectrum Analyzer Service Manual Theory of Operation DC Power 2 Board Al2 The DC Power 2 board converts from 24 V DC power to these voltages Analog 12 V digital 12V Analog 5 V Analog 5 V Analog 12 V Analog 24 V Then it supplies the power to the following modules 3 GHz Down Converter unit A5 Baseband board Mother board 24 V DC fan The DC Power 2 board also has a power switch and power supply remote control circuit which turn off the power upon detection of a signal from the CPU board thus preventing accidents caused by any unintentional shut down of the power 10 MHz Reference The internal 10 MHz Reference Oscillator is a highly stable oven controlled Oscillator crystal oscillator and provides the internal 10 MHz reference frequency to the 3 GHz Down Converter Instead of the internal 10 MHz reference signal the external reference signal can be used through the rear panel connector All th
61. 6 13 before doing any procedure in this group The procedures are presented in the order listed Board retainer and shield cover A6 FFT board A7 DDC board A8 Memory board CPU board A1 Mother board Down converter A5 Baseband board 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Board Retainer and 1 Assemble equipment and locate modules to be removed Shield Cover I S a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the modules to be removed in the locator diagram Board modules Figure 6 5 page 6 16 2 Orient instrument Set the analyzer so its bottom is down on the work surface and its right side is facing you 3 Remove the board retainer See Figure 6 21 Remove the one screw attaching the retainer to the chassis using a screwdriver with a size 2 Phillips tip Pull up the retainer away 4 Remove the shield cover Pull up the cover away No tools are needed 5 Reinstallation Do in reverse order steps 3 and 4 to reinstall the board retainer and shield cover Figure 6 21 Board retainer and shield cover removal 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 39 Removal and Installation Procedures A6 FFT Board A7 DDC Board 6 40 1 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the module to be remov
62. 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 Mfr Part Number 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List See Figure 9 2 Interconnect diagram for each cable location Figure 10 7 Cables 3026 3 GHz Real Time Spectrum Analyzer Service Manual 10 17 Mechanical Parts List Replaceable Parts List Fig amp Index Tektronix Part Serial No Serial No Mfr Number Number Effective Discontd Qty Name amp Description Code Mfr Part Number STANDARD ACCESSORIES 1 CABLE ASSY PWER 3 18 AWG 92 L STANDARD CABLE SEE FIG 10 1 7 161 0104 05 1 CA ASSY PWR 3 1 0MM SQ 250V 10A 2 5 M 3109 198 010 OPTION AUSTRALIAN 161 0104 06 1 CA ASSY PWR 3 1 0MM SQ 250V 10A 2 5 M 3109 198 010 OPTION A1 EUROPEAN 161 0104 07 1 CA ASSY PWR 3 1 0MM SQ 240V 10A 2 5 M S3109 209010 OPTION A2 UNITED KINGDOM 161 0104 08 1 CA ASSY PWR 3 18 AWG 250 10A 98 INCH L 2W733 ORDER BY DESC OPTION A4 NORTH AMERICAN 161 0167 XX 1 CA ASSY PWR 3 0 75MM SQ 250V 10A 2 5 M 3109 ORDER BY DESC OPTION A5 SWITZERLAND 071 0418 XX 1 MANUAL TECH USER ENGLISH VERSION 071 0419 XX 1 MANUAL TECH PROGRAMMER ENGLISH VERSION OPTIONAL ACCESSORIES 071 0420 XX 1 MANUAL TECH SERVICE ENGLISH VERSION 174 4264 XX 1 CA ASSY SP ELEC 50 26AWG 30CM L W CONN EXTENTION CABLE 103 0419 XX 1 ADAPTER CONN KEYBOARD 10 18 3026 3 GHz Real Time Spectrum Analyzer Service Manual
63. 896 points at 200 20 2 kHz span 960 points at 100 10 1 kHz span 992 points at 50 5 kHz span 992 points at 500 200 100 Hz span 256 points 128 points at 2 MHz span 192 points at 1 MHz span 224 points at 500 kHz span 128 points at 200 20 2 kHz span 192 points at 100 10 1 kHz span 224 points at 50 5 kHz span 224 points at 500 200 100 Hz span 1 10 3026 3 GHz Real Time Spectrum Analyzer Service Manual Specifications Table 1 14 Nominal traits Filter Characteristics Description Filter type 5 MHz span 134 tap FIR filter 2 MHz span 201 tap FIR filter 1 MHz span 268 tap FIR filter 500 kHz span 317 tap FIR filter 200 kHz span 391 tap FIR filter 100 kHz span 503 tap FIR filter 50 kHz span 503 tap FIR filter with 4 stage comb filter 20 kHz span 503 tap FIR filter with 4 stage comb filter 10 kHz span 503 tap FIR filter with 4 stage comb filter 5 kHz span 459 tap FIR filter with 4 stage comb filter 2 kHz span 503 tap FIR filter with 4 stage comb filter 1 kHz span 459 tap FIR filter with 4 stage comb filter 500 Hz span 459 tap FIR filter with 4 stage comb filter 200 Hz span 459 tap FIR filter with 4 stage comb filter 100 Hz span 503 tap FIR filter with 4 stage comb filter FIR filter coefficient length 20 bits Table 1 15 Nominal traits Trigger Acquisition Characteristics Trigger mode Trigger source Internal trigger Description Auto Normal Internal or E
64. A Radiated and Conducted Emissions EN 50081 1 Emissions EN 61000 3 2 AC Power Line Harmonic Emissions EN 50082 1 Immunity EN61000 4 2 Electrostatic Discharge Immunity EN61000 4 3 RF Electromagnetic Field Immunity EN61000 4 4 Electrical Fast Transient Burst Immunity EN61000 4 5 Power Line Surge Immunity EN61000 4 6 Conducted Disturbances Induced by RF Fields EN61000 4 8 Power Frequency Electromagnetic Field EN61000 4 11 Power Line Interruption Immunity Complies with EMC provision of Radiocommunications Act per the following standard s AS NZS 2064 1 2 Industrial Scientific and Medical Equipment 1992 EC Declaration of Conformity Low Voltage Compliance was demonstrated to the following specification as listed in the Official Journal of the European Union Low Voltage Directive 73 23 EEC amended by 93 69 EEC EN 61010 1 1993 Safety requirements for electrical equipment for measurement control and laboratory use U S Nationally Recognized Testing Laboratory Listing UL3111 1 Standard for electrical measuring and test equipment Canadian Certification Additional Compliance CAN CSA C22 2 No 231 CSA safety requirements for electrical and electronic measuring and test equipment ANSI ISA S82 01 1994 Safety standard for electrical and electronic test measuring controlling and related equipment IEC61010 1 Safety requirements for electrical equipment for measurement control and laboratory use 3026 3
65. Boot Sequence field to select the solid state disk 3026 system disk as the boot device When you complete setting press the ESC key Quit to return to the initial SETUP screen Select SAVE amp EXIT SETUP and press the Enter key At the prompt SAVE to CMOS and EXIT Y N press y yes The analyzer starts the 3026 application Turn off the ON STBY switch 3026 3 GHz Real Time Spectrum Analyzer Service Manual Options SS rs Options and Accessories This appendix describes the various options as well as the standard and optional accessories that are available for the 3026 Real Time Spectrum Analyzer Options Tektronix will ship the options shown in Table 7 1 Table 7 1 Options Option Label Description A1 Universal European 220 V 50 Hz power cord gt Cable retainer ID A2 UK power cord 240 V 50 Hz power cord Cable retainer A3 Australian power cord 240 V 50 Hz power cord Cable retainer A4 North American power 240 V 60 Hz power cord cord Cable retainer A5 Switzerland power cord 220 V 50 Hz power cord Cable retainer 1R Rackmount Spectrum Analyzer comes configured for installation in a 19 inch wide instrument rack 3026 3 GHz Real Time Spectrum Analyzer Service Manual 7 1 Options and Accessories Standard Accessories The analyzer comes standard with the accessories listed in Table 7 2
66. EC 2 22CM L W FAN 12CM SQUARE NUT M4 W LOCK WASHER FILTER RFI 6A 250VAC 50 60HZ SCREW MACHINE M3X8MM L FLH STL MFZN C CROSS REC WASHER FLAT 0 3751D X 0 500 X 0 024 STL CD PL SCREW MACHINE M3X6MM L PNH STL MFZN C CROSS REC SPACER POST 6 4MM L 6 32EXT M3 5INT THD 7MM HEX STL JACK SCREW FOR GPIB CONNECTOR WASHER LOCK 10 SPLIT 0 047 THK S BRZ NP PANEL REAR SHIELD MECHANICAL CABLE BRACKET HARD DISK HDD UNIT 2 5INCH 2 1GB FORMATTED HDD UNIT SOLID STATE 3MB 2 5INCH E IDE I F FORMATTED SCREW MACHINE M3X6MM L PNH STL MFZN C CROSS REC SCREW MACHINE M3X6MM L PNH STL MFZN C CROSS REC W FLAT 7MM OD amp LOCK WASHER CA ASSY SP ELEC 3 26AWG 50CM L W THERMAL SENSOR W40 SCREW MACHINE M2 5X6MM FLH STL CR PL CROSS REC NUT PLAIN HEX PLATE NUT CONN RF JACK N TO SMA 500HM PANEL MOUNT FLANGE CA ASSY SP ELEC 2 22CM L W FAN 12CM SQUARE BRACKET COMPONENT BNC SCREW MACHINE M3X8MM L PNH STL MFZN C CROSS REC STRAP TIEDOWN 3 5MM X 203MM L 66 NYLON CORE EM HALF FERRITE EMI SPRS IMP 500HM 10 TO 100MHZ 2 HALF FLEX CIRCUIT BEZEL BUTTON BRACKET FDD 3026 SCREW MACHINE M2 5X4MM L FLH SST CROSS REC FLOPPY DISK DRIVE 3 5INCH 3 MODE W INTERFACE FD 05HG 061 Mfr Code 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 Mfr Part Number
67. ER 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification 5 Modify the function generator controls Frequency 500 Hz 6 Acquire data Press the START STOP button to start data acquisition 7 Check the waveform Check that a sine wave for approximately 3 5 cycles is displayed on the screen 8 Disconnect the hookup a Turn off the modulation on the signal generator b Press DISPLAY Disconnect the cable at RF INPUT 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 25 Performance Verification Internal Trigger Test 4 26 This procedure checks that the internal trigger functions correctly Equipment One signal generator Item 2 Required i One 50 Q N N coaxial cable Item 10 Prerequisites See page 4 8 Signal generator 50 Q N N coaxial cable Figure 4 11 Initial test hookup 1 Install the test hookup and preset the instrument controls a Set the 3026 controls m Press the START STOP button to stop data acquisition W Press DISPLAY gt Spectrum Co Spectrogram m Press SETUP gt Range gt 50 10MHz m Press SETUP gt FFT gt FFT Pts and select 1024 m Press SETUP gt FFT gt Window Blackman Harris m P
68. ES SETUP screen 6 85 3026 3 GHz Real Time Spectrum Analyzer Service Manual Table of Contents Figure 9 1 Block diagram Figure 9 2 Interconnect diagram Figure 10 1 External modules Figure 10 2 Front panel modules Figure 10 3 Internal modules Figure 10 4 Power supply modules Figure 10 5 Board modules 1 Figure 10 6 Board modules 2 Figure 10 7 Cables 3026 3 GHz Real Time Spectrum Analyzer Service Manual vii Table of Contents List of Tables Table 1 1 Warranted characteristics Frequency 1 4 Table 1 2 Warranted characteristics Amplitude 1 4 Table 1 3 Warranted characteristics Realtime span 1 5 Table 1 4 Warranted characteristics Trigger Acquisition 1 5 Table 1 5 Warranted characteristics Installation requirements 1 6 Table 1 6 Warranted characteristics Environmental 1 6 Table 1 7 Typical characteristics Amplitude 1 7 Table 1 8 Typical characteristics Filter 1 7 Table 1 9 Typical characteristics Trigger Acquisition 1 7 Table 1 10 Typical characteristics Installation requirements 1 7 Table 1 11 Nominal traits Frequency 1 9 Table 1 12 Nominal traits Amplitude 1 9 Table 1 13 Nominal tra
69. Hard Disk Drive The hard disk is used for storing these kinds of data Acquisition data xxxxx iqa Setup data xxxxx cfg Screen hardcopy image data BMP or EPS format 2 5 inch Solid State Disk The solid state silicon disk contains files of the following categories 3026 operating system 3026 firmware 3026 calibration data The 3 5 inch floppy disk drive is used for storing these data Acquisition data Screen hardcopy data BMP or EPS format It is also used for updating the firmware and hardware controls 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification Performance Verification Two types of Performance Verification procedures can be performed on this product Self Tests and Performance Tests You may not need to perform all of these procedures depending on what you want to accomplish m To rapidly confirm that the 3026 functions and was adjusted properly just do the Self Tests which begin on page 4 3 Advantages These procedures require minimal additional time to perform require no additional equipment and more completely test the internal hardware of the 3026 They can be used to quickly determine if the analyzer is suitable for putting into service such as when it is first received m If more extensive confirmation of performance is desired do the Perfor mance Tests beginning on page 4 7 after doing the Self Tests just refer enced Advantages These procedures add dire
70. Iten PU PD Modify Fi Help Shift F2 Change Color Figure 6 47 STANDARD CMOS SETUP screen 6 84 3026 3 GHz Real Time Spectrum Analyzer Service Manual Accessing the BIOS 4 Select BIOS FEATURES SETUP and press the Enter key The BIOS FEATURES SETUP menu appears You can select the boot disk C hard disk drive or A floppy disk drive ROM ISA BIOS 2C4LGARK BIDS FEATURES SETUP AUARD SOFTWARE INC Virus Warning Disabled CPU Internal Cache Enabled External Cache Enabled Quick Power On Self Test Enabled Boot Sequence 7 C Swap Floppy Drive Disabled Boot Up Floppy Seek Enabled Boot Up NumLock Status On Boot Up System Speed High m ee oe IDE HDD Block Node Enabled Gate AZO Option 1 Fast Typematic Rate Setting Disabled Typematic Rate Chars Sec 6 Typenatic Delay Meer 250 Security Option Setup PS Z mouse function control Enabled OS Select For DRAN gt 64HB Non 0SZ Video BIOS Shadow Enabled C8000 CBFFF Shadow Disabled CC000 CFFFF Shadow Disabled D00900 D3FFF Shadow Disabled D4000 D FFF Shadow Disabled D8000 DBFFF Shadow Disabled DCOO0 DFFFF Shadow Disabled F6 Quit Thee Select Item Help P PD 7 Modify Old Values Shift FZ Calor Load BIOS Defaults F7 Load Setup Defaults Figure 6 48 BIOS FEATURES SETUP screen 5 When you complete setting press the ESC key Quit to re
71. J320 on the A12 DC Power 2 board Unplug the cable at J12 on the Al Mother board See also Figure 6 24 on page 6 45 Remove the six screws securing the insulator to the DC Power 1 board Remove the six screws securing the DC Power 1 board to the top chassis Lift the board up and away from the top chassis Remove the AI2 DC Power 2 board See Figure 6 27 a Unplug the cables at J300 J330 and J360 b Unplug the cable at J13 on the Al Mother board See also Figure 6 24 on page 6 45 c Remove the six screws securing the A12 DC Power 2 board and insulator to the top chassis d Liftthe board up and away from the top chassis Reinstallation a Do in reverse order step 5 to reinstall the 12 DC Power 2 board b Do in reverse order step 4 to reinstall the All DC Power 1 board c Doinreverse order step 3 to close the top cover d Referto 73 Filter Board to reconnect the cables at J400 and J440 on A13 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures To J400 and J440 on A13 bottom side W350 to J13 on A1 AS poe W320 W330 Figure 6 27 A11 and A12 DC Power boards removal 3026 3 GHz Real Time Spectrum Analyzer Service Manual Bt N Sx To J12 on A1 lt To J310 on A12 To J320 on A12 M11 DC Power 1 board From the power supply a From the fan we i78 ON SAL A12 DC Power 2 bo
72. J400 J410 J430 J440 and J450 b Remove the two screws securing the regulators and insulators to the main chassis c Remove the three screws securing the Filter board to the main chassis d Liftthe board up and away from the chassis 4 Reinstallation a Doinreverse order step 3 to reinstall the A13 Filter board b Referto Down Converter and A5 Baseband Board on page 6 46 to reinstall the down converter chassis From CN13 on the down converter From CN9 on the down converter lt From W320 W330 on A12 to J400 From J330 on A12 to J440 From W38 on A5 Figure 6 26 A13 Filter board removal 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 49 Removal and Installation Procedures A11 and A12 DC Power 6 50 Boards 1 Assemble equipment and locate modules to be removed a b Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 Locate the modules to be removed in the locator diagram Power supply modules Figure 6 6 page 6 17 Do the procedure A 3 Filter Board that precedes this procedure to disconnect the cables at JA00 and J440 on A13 Orient instrument Set the analyzer so its bottom is down on the work surface and its top side is facing you Open the top chassis Do the procedure Open the top chassis step 3 on page 6 30 Remove the All DC Power 1 board See Figure 6 27 a b e Unplug the cables at J310 and
73. ONIC WAY 91 3 COLIN DRIVE 1016 CLEGG COURT 60 S JEFFERSON ROAD 111 INDUSTRIAL RD 800 E NORTHWEST HWY ST CHARLES ROAD 14150 SW KARL BRAUN DR PO BOX 500 701 SONORA AVE 40 LINDEMAN DR 3026 3 GHz Real Time Spectrum Analyzer Service Manual City State Zip Code SUMMERSET NJ 08873 TOKYO JAPAN 100 3199 CHICAGO IL 60609 3320 TIGARD OR 97223 CLACKAMAS OR 97015 TACOMA WA 98409 SAN JOSE CA 95112 MOUNT PROSPECT IL 60056 TAIPEI TAIWAN ROC BEAVERTON OR 97077 VANCOUVER WA 98661 2999 PORTLAND OR 97214 HARRISBURG PA 17105 LOS ANGELES CA 90039 2410 RICHMOND IN 47375 0010 FRANKLIN IN 46131 GARDENA CA 90248 SECAUCUS NJ 07094 HOLBROOK NY 11741 PETALUMA CA 94952 1152 WHIPPANY NJ 07981 COLD SPRING KY 41076 9749 DES PLAINES IL 60016 3049 ELGIN IL 60120 BEAVERTON OR 97077 0001 GLENDALE CA 91201 2431 TURNBULL CT 06611 4739 10 3 Mechanical Parts List Replaceable Parts List Fig amp Index Number 10 4 Tektronix Part Serial No Number 390 1196 XX 211 1042 XX 200 3991 XX 211 1042 XX 334 9876 XX 334 9875 XX 161 0230 01 334 9930 XX 348 1289 XX 354 0709 XX 334 9874 XX Effective Serial No Discont d Qty Name amp Description 1 1 1 92 CM CABINET SCOPE TEK BLUE SCREW MACHINE M4X10MM L BDGH STL ZN PL COVER REAR HARD POLYCARBONATE LEXAN SCREW MACHINE M4X10MM L BDGH STL ZN PL MARKER DENT MKD WARNING FUSE DATA SAFETY CONTROLLED POLYCARBONATE MARKER DEN
74. OS with an AT keyboard For example if a firmware upgrade is unsuccessful and the 3026 do not start up change the boot disk from the hard disk to the floppy disk using the following procedures Then you can restart the analyzer with aDOS boot disk to install the firmware in the DOS environment This section explains these topics m Setting the BIOS parameters m Backing up the system files NOTE If you change the BIOS parameters reset them to the factory default settings after servicing the analyzer 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 81 Accessing the BIOS Preparation 6 82 Connect an AT keyboard to the DIN connector attached to the CPU board 1 2 Turn off the analyzer Remove the rear cover and cabinet to access the keyboard connector of the CPU board Refer to Removal and Installation Procedures Rear Cover and Cabinet on page 6 22 You can see the keyboard connector on the rear side of the CPU board Pull out the connector Connect the AT keyboard to the DIN connector in the analyzer NOTE If you use a PS 2 keyboard connect it through a PS 2 AT adapter Tektronix part number 103 0419 XX to the AT connector PS 2 mouse mini DIN connector unused ORY KAD 4 CPU board AT keyboard DIN connector Figure 6 45 Connecting the keyboard 3026 3 GHz Real Time Spectrum Analyzer Service Manual Accessing the BIOS Setting the BIOS Parameters
75. P button to stop data acquisition m Press DISPLAY A Spectrum button m Press SETUP gt Range gt 10M 3GHz m Press SETUP gt FFT gt FFT Pts and select 1024 m Press SETUP gt FFT gt Window Blackman Harris m Press the FREQ button and set the frequency using the keypad SPAN 212 xe Base 100 kHz m Press the REF LEVEL button and set the reference level using the keypad Ref yaspa bebe 15 dBm 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification m Press SETUP gt Average Peak Hold gt Average RMS m Press 1 0 0 and ENTER to set the average times to 100 Press DISPLAY MENU gt Screen Trace gt Active Average Peak Hold m Press MEASURE C N Set the signal generator controls Frequency 25 MHz Amplitude 20 dBm RF output On Hook up the signal generator Connect the output of the signal generator through a 50 Q N N coaxial cable to RF INPUT of the 3026 See Figure 4 14 2 Acquire data a b Press the ROLL BLOCK button to select the Roll mode Press the START STOP button to start data acquisition 3 Wait Wait until the message averaging complete is displayed on the upper left corner of the screen 4 Modify the 3026 controls a b c d e Press MARKER gt Marker Setup gt Dual Marker Press the MARKER TOGGEE button to select the Carrier marker 3 Press MARKER gt Peak Find gt Hi
76. Power 2 4 Power On Power Off AN Consider the following information when you power on or power off the instrument or when power is interrupted due to an external power failure To turn on the power to the analyzer turn on the ON STBY button located at the bottom left corner of the front panel When you turn on the power Windows 95 is booted and the system software is subsequently started Upon power on the analyzer runs a power on self check See Section 6 Maintenance for information on diagnostics and fault isolation ON STBY button Figure 2 1 Power switch When you place the ON STBY button on the front panel in the STAND BY position the internal software detects the condition of the power switch and shuts down the system before powering off the analyzer You need not terminate the application software of the analyzer or Windows 95 before the shutdown CAUTION When turning on or off the power be sure to use the ON STBY button on the front panel While the power cord remains unplugged from the AC outlet or no voltage is being supplied to the AC outlet be sure to keep the ON STBY button in the STAND BY position Placing the front panel power switch in the STAND BY position does not cause the master mains to be off completely To turn it off unplug the power cord from the outlet 3026 3 GHz R
77. Q N N coaxial cable to the step attenuator input m Connect the step attenuator output through a 50 Q N N coaxial cable to the power sensor input Signal generator Power meter Step attenuator a AA Output In Out Power sensor 50 Q N N coaxial cable Figure 4 17 Hookup for setting the signal generator b Setthe step attenuator to 10 dBm c Adjust the signal generator output so that the power meter reads 0 dBm d Disconnect the cable from the power sensor input 4 Hook up the signal source Connect the step attenuator output through a 50 Q N N coaxial cable to the 3026 RF INPUT See Figure 4 18 3026 Signal generator o Step attenuator Output 50 Q N N coaxial cable Figure 4 18 Hookup for checking the reference level accuracy 4 36 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification 5 Check the 3026 reference level Do the procedure for each combination of the settings specified in Table 4 5 Table 4 5 The instrument settings for the RF reference level test 3026 ref level setting Step attenuator setting 3026 input level 30 dBm 0 dB 10 dBm 20 dBm 0 dB 10 dBm 10 dBm 10 dB 0 dBm 0
78. RCUIT BOARD ASSY A13 FILTER SCREW MACHINE M3X6MM L PNH STL ZN PL CROSS REC W FLAT 7MM OD amp LOCK WASHER SCREW MACHINE M3X8MM L PNH STL MFZN C CROSS REC INSULATOR PLATE TRANSISTOR TO 220 SILICON RUBBER Mfr Code 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 Mfr Part Number 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List Figure 10 4 Power supply modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual 10 11 Mechanical Parts List Replaceable Parts List Fig amp Index Number 5 1 2 3 4 10 12 Tektronix Part Serial No Number 671 4711 XX 211 0871 XX 119 6049 XX 119 6021 XX Effective Serial No Discontd Qty 1 7 Name amp Description CIRCUIT BOARD ASSY A1 MOTHER SCREW MACHINE M3X6MM L PNH STL ZN PL CROSS REC W FLAT 7MM OD amp LOCK WASHER BASEBAND MODULE A5 BASEBAND 289 A712 01 WIRED WITH SHIELD MODULE RF DOWN CONVERTER IN 10MHZ 3GHZ OUT 21 4MHZ RF3001 MOD W CHASSIS Mfr Code 80009 80009 80009 80009 Mfr Part Number 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List A6 A7 A8 See page 10 15 for the details Figure 10 5 Board modules 1 10 13 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List Replaceable Part
79. SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES Pawa Table of Contents Specifications Operating Information Theory of Operation General Safety Summary Service Safety Summary Preface ovi e EE RU ni aan Introduction 5 c nr Product Overview Specifications 2 54e e re nes nn nenne Warranted Characteristics Typical Characteristics Z ut u n Nominal Traits es asa pusa a ane alae Brandes Certification and Compliances Installation y u n eh Supplying Operating Operating Environment 0 0 c cece n Applying and Interrupting Power Repackaging Instructions Installed Options u r puya isa kapay III en Operating Instructions Preparations ass wS e t er oe UR Os eg o C oa eU Tec ROS SEIUP rn D ERU b ceo bdo e gale c sinis Turning On the Power
80. See Figure 6 38 Disconnect the cable at J310 and J320 on the A11 DC Power 1 board See Figure 6 38 there 24 V between pin 1 and 6 at J300 Reconnect the cable between A5 DC Power 1 board and A12 DC Power 2 board Disconnect the cable at J330 on the A12 DC Power 2 board See Figure 6 38 there 24 V on J300 pin 1 and 6 of the A11 DC Power 1 board See Figure 6 38 No Are J330 pin 1 at 5 V pin 2 at 5 V and pin 5 at 12 V on the A12 DC Power 2 board See Figure Remove the cable at J330 Are J330 pin 1 at 5 V pin 2 at 5 V and pin 5 at 12 V on the A12 DC Power 2 board See Figure Locate the short circuited position of the loading side Replace the faulty board Figure 6 32 Troubleshooting procedure 1 Power supply modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual there 24 V on J300 pin 1 and 6 of the A11 DC Power 1 board See Figure 6 38 Locate the short circuited position of the loading side Replace the faulty board 6 61 Troubleshooting J310 pin 2 at 5 V pin 4 at 24 V and pin 7 at 24 V on the A12 DC Power 2 board See Figure 6 38 Replace the A11 DC Power 1 board J310 pin 2 at 5 V pin 4 at 24 V and pin 7 at 24 V on the A12 DC Power 2 board See Figure A 6 38 Locate the short circuited position
81. Service Manual SON Y Tektronix 3026 3 GHz Real Time Spectrum Analyzer 071 0420 00 Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to the Safety Summary prior to performing service C Copyright Sony Tektronix Corporation All rights reserved Copyright Tektronix Inc All rights reserved Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Printed in Japan Sony Tektronix Corporation P O Box 5209 Tokyo Int l Tokyo 100 31 Japan Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 TEKTRONIX and TEK are registered trademarks of Tektronix Inc WARRANTY Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If a product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for
82. Spectrum Analyzer Service Manual 4 43 Performance Tests 3026 Test Record Page 3 of 4 Span and center frequency tests Cont Span Center frequency Test frequency Low limit Test result High limit Span 10kHz 996 kHz 995 984375 kHz 996 015625 kHz 100 8 kHz 100 796875 kHz 100 803125 kHz Span 1 kHz 99 6 kHz 99 5984375 kHz 99 6015625 kHz Gente req s TOU REIS as up 99 9984375 kHz 100 0015625 kHz 100 4 kHz 100 3984375 kHz 100 4015625 kHz Span 500Hz 9 8kHz 9 79921875 kHz 9 80078125 kHz 10KHZ i 9 99921875 kHz 10 00078125 kHz 10 2 kHz 10 19921875 kHz 10 20078125 kHz Span 200Hz 9 92kHz 9 9196875 kHz 9 9203125 kHz Center freq 10 kHz 10 kHz 9 9996875 kHz 10 0003125 kHz 10 08 kHz 10 0796875 kHz 10 0803125 kHz Span 100Hz 9 96 kHz 9 95984375 kHz 9 96015625 kHz Genier med ACKER re 9 99984375 kHz 10 00015625 kHz 10 04 kHz 10 03984375 kHz 10 04015625 kHz Frame update interval test Normal Abnormal Frame update interval Internal trigger test Internal trigger 4 44 3026 3 GHz Real Time Spectrum Analyzer Service Manual Abnormal Performance Tests 3026 Test Record Page 4 of 4 External trigger test Normal Abnormal 100 dB p i RF reference level test Reference level Test level Low limit Test result High limit 30 dBm 10 dBm 9 dBm 11 dBm 20 dBm 10 dBm 9 dBm 11 dBm 10 dBm 1dBm 41 dBm 0 dBm 10 dBm 11 dBm 9 dBm 10
83. T MKD I O SIGNAL POLYCARBONATE CABLE ASSY PWR 3 18 AWG 92 L STANDARD ACCESSORY MARKER DENT MKD CAUTION SHLD GASKET ELEC MESH TYPE 3 2MM X 4 7MM SI SPONGE CORE 100M ROLL RING TRIM LEXAN 940 SAFETY CONTROLLED MARKER DENT MKD 3026 Mfr Code Mfr Part Number 80009 80009 80009 80009 80009 80009 TK2432 ORDER BY DESC 80009 80009 80009 80009 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List Figure 10 1 External modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual 10 5 Mechanical Parts List Replaceable Parts List Fig amp Index Number 2 1 10 6 Tektronix Part Serial No Number 366 0753 XX 260 2539 XX 378 0459 XX 366 0753 XX 129 A551 XX 129 1510 XX 211 0871 XX 260 2497 XX 671 4704 XX 384 1686 XX 671 4703 XX 366 1591 XX 348 1276 XX 386 7119 XX 333 4302 XX 213 0153 XX 366 0768 XX Effective Serial No Discont d Qty Name amp Description 14 1 1 24 26 49 CM PUSH BUTTON TEK TAN ABS SWITCH SET ELASTOMERIC BEZEL FILTER LIGHT LCD PUSH BUTTON TEK TAN ABS SPACER POST 11MM L M3 INT EXT THD 5 5MM HEX BRS NI PL SPACER POST 7MM L M3 INT THRU BRS 5 5MM HEX NI PL SCREW MACHINE M3X6MM L PNH STL ZN PL CROSS REC W FLAT 7MM OD amp LOCK WASHER SWITCH ROTARY ENCODER 5V DC 70MA INCREMENTAL CIRCUIT BOARD ASSY A2 KEY BOARD 1 EXTENSION SHAFT 0 790 L X 0 500 DIA PLASTIC CIRCUIT BOARD ASSY A3 KEY BOARD 2
84. T keyboard Refer to the procedure Preparation on page 6 82 to connect the AT keyboard to the analyzer 2 Start up the analyzer from the DOS boot disk NOTE Refer to the Windows or DOS manual on creating the DOS boot disk a Turnon the analyzer After a few seconds the BIOS start message appears on screen b Insert the DOS boot disk to the disk drive c Press the Delete key on the AT keyboard to display the AWARD BIOS SETUP screen d Select BIOS FEATURES SETUP and press the Enter key e In the BIOS FEATURES SETUP menu enter A C in the Boot Sequence field to select the floppy disk as the boot device 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 89 Accessing the BIOS 6 90 Press the ESC key Quit to return to the initial SETUP screen Select SAVE amp EXIT SETUP and press the Enter key At the prompt SAVE to CMOS and EXIT Y N press y yes The analyzer starts up in the DOS environment 3 Copy files to floppy disk s Use the DOS COPY command to save files to floppy disk s 4 Shut down the analyzer After copying files do the following substeps to shut down the analyzer a Press Ctrl Alt Del keys to reboot the analyzer After a few seconds the BIOS start message appears on screen Press the Delete key on the AT keyboard to display the AWARD BIOS SETUP screen Select BIOS FEATURES SETUP and press the Enter key In the BIOS FEATURES SETUP menu enter C A in the
85. al 4 27 Performance Verification 4 28 10 11 12 13 14 15 16 17 e Press the Same Level side button so that the current marker has the same level as the previous one f Move the edit marker to the position B horizontally using the general purpose knob g Press the Set side button to complete the mask Modify the 3026 controls Press TRIG gt Trig Mask Condition gt Freq Mask and select Inside Acquire data a Press the START STOP button to stop the Roll acquisition b Press the ROLL BLOCK button to select the Block mode Press the START STOP button again to start the Block acquisition Check the trigger Check that the 3026 is not triggered Modify the signal generator control Turn off the RF output of the generator Check the trigger Check that the 3026 is triggered The spectrum waveform displays on screen Modify the 3026 controls Press TRIG gt Trig Mask Condition gt Freq Mask and select Break Acquire data Press the START STOP button to start data acquisition Check the trigger Check that the 3026 is not triggered Modify the signal generator control Turn on the RF output of the generator Check the trigger Check that the 3026 is triggered The spectrum waveform displays on screen Modify the 3026 controls a Press SETUP gt FFT gt FFT Pts and select 256 b Press SETUP gt Frame Period gt 4 0 MHz us 40 us and ENTER Acquire data a Press the ROLL BLOCK
86. al cable to RF INPUT of the 3026 See Figure 5 16 Set the 3026 controls Set the parameters as follows using the FREQ and SPAN keys Frequency 1500 MHz Span 3 GHz 4 Acquire data a Select Roll mode with the BLOCK ROLL button b Press START STOP to start the acquisition 5 Check the display Confirm that a spectrum displays at around 1500 MHz 6 Disconnect the hookup Disconnect the cable at RF INPUT 3026 3 GHz Real Time Spectrum Analyzer Service Manual 5 21 Adjustment Procedures 5 22 3026 3 GHz Real Time Spectrum Analyzer Service Manual Maintenance Maintenance This section contains the information needed to do periodic and corrective maintenance on the 3026 Real Time Spectrum Analyzer The following subsections are included Preparation Introduction plus general information on preventing damage to internal modules when doing maintenance Inspection and Cleaning Information and procedures for inspecting the analyzer and cleaning its external and internal modules Removal and Installation Procedures Procedures for the removal of defective modules and replacement of new or repaired modules Troubleshooting Information for isolating and troubleshooting failed modules Included are instructions for operating the analyzer s internal diagnostic routines and troubleshooting trees Related Maintenance Procedures The following sections contain information and procedur
87. ammable ATT The programmable ATT is also used in the Baseband mode only Low Pass Filter The LPF remove unwanted high frequency signals to prevent aliasing in the A D converter Band Pass Filter The BPF prevents excessive input of out of band signals while stopping images generated in the 4th mixer 4th Mixer The 4 mixer is only used in the RF mode It converts the 3 d IF signals sent from the 3 GHz down converter into the 4th IF frequency signals which can be A D converted The A7 Digital Down Converter DDC board consists of 5 blocks DC level shifter Excessive input detection circuit 12 bit A D converter Digital mixer Digital filter 3026 3 GHz Real Time Spectrum Analyzer Service Manual Theory of Operation This board has these functions Digital signal processing including digitization of input signals I Q separation Frequency conversion before outputting the signals to the FFT board 12 bit A D Converter The analog signal is converted to digital data using a 12 bit A D Converter with 25 6 MHz sample second The process includes frequency conversion and I Q separation by the digital orthogonal mixer Then unwanted bands are removed and a sample rate change is performed by the subsequent digital filter Analog Block Analog signals are processed with canceling DC offsets as well as DC level shifting to be fitted within the input range of A D converter by the input buffer then input to the A D converter T
88. ans working Yes Replace the faulty fan s 6 63 Troubleshooting Use this procedure when the displayed signal is abnormal bes Set the 3026 as follows n i baseband Input mode RF L ET Center frequency 100 MHz press the START button N Reference level 0 dBm Vary the reference level from Set the signal generator as follows Vary the reference level from and connect it to the 3026 RF input 50 dBm to 30 dBm Refer to Performance Verification Can you Frequency 100 MHz hear the relays Level 10 dBm N working Can you hear the relays working No Set the input mode to Baseband Vary the reference level from 50 dBm to 30 dBm Probing pin 8 of U514 on the A5 Baseband board see Figure 6 39 No Replace the A5 measure the frequency using another Baseband board spectrum analyzer and a FET probe Refer to Removal and Installation for accessing the A5 Baseband board RF mode is OK following stable spectrum being displayed Frequency 4 20 MHz Yes Replace the U100 Down Converter or the A5 Baseband board Unplug the coaxial cable at J6 the third IF output connector of the U100 Down Converter see Figure 6 43 Using another spectrum analyzer measure the connector output Can you hear the relays working Replace the A5 Baseband board the A7 DDC board or the A8 Memory board following stable spectrum
89. ard 6 51 Removal and Installation Procedures A10 Sub Power Board 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the module to be removed in the locator diagram Power supply modules Figure 6 6 page 6 17 2 Orient instrument Set the analyzer so its bottom is down on the work surface and its top side is facing you 3 Open the top chassis Do the procedure Open the top chassis step 3 on page 6 30 4 Remove the AIO Sub Power board See Figure 6 28 a Unplug the cables at J100 J110 and J130 b Remove the two screws securing the Sub Power board to the main chassis c Liftthe board up and away from the chassis 5 Reinstallation a Do in reverse order step 4 to reinstall the 10 Sub Power board b Doin reverse order step 3 to close the top chassis Power Supply 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the module to be removed in the locator diagram Power supply modules Figure 6 6 page 6 17 2 Orient instrument Set the analyzer so its bottom is down on the work surface and its top side is facing you 3 Open the top chassis Do the procedure Open the top chassis step 3 on page 6 30 4 Unplug the interconnect cables See Figure 6 28 Unplug the three cables at these connectors m J110 on the A10 Sub Power b
90. bad Set the 3026 as follows in the SETUP menu Input Mode RF Reference Osc Internal Freq and Span The values at which the fault occurs Set the output frequency of the signal generator to the same as the 3026 center frequency and connect it to the RF input the spectrum frequency on the display correct No Connect the external 10 MHz 0 dBm reference signal to the 10 MHz REF INPUT on the 3026 rear panel Modify the 3026 setting Reference Osc External the spectrum frequency on the display correct Replace the U100 Down Converter The 3026 is OK Modify the 3026 setting Reference Osc External Connect the external 10 MHz 0 dBm reference signal to the 10 MHz REF INPUT on the 3026 rear panel frequency on the display correct Unplug the coaxial cable at J5 the internal 10 MHz reference input of the U100 Down Converter See Figure 6 43 Using another spectrum analyzer measure the connector output Replace the A5 Baseband board Is the spectrum 10 0 MHz and gt 6 dBm Replace the U100 Down Converter No Figure 6 34 Troubleshooting procedure 3 Clock modules 6 66 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting Set the 3026 as follows in the SETUP menu Input Mode RF Freq 100 MHz Span 2 MHz Ref 0 dBm Set the signal generator as follows and connect it to the 3026 RF input Refer to Pe
91. board See Figure 6 25 a Unplug the cable at J450 on the A13 Filter board Refer to the procedure A13 Filter board on page 6 49 b Unplug the cable at CN15 on the down converter c Unplug the SMB cables at J100 J610 J620 and J700 on the Baseband board d Remove the four screws securing the shield case to the Baseband board Lift the case up and away e Remove the four screws securing the Baseband board to the down converter chassis f Remove the four spacer posts securing the Baseband board to the down converter chassis g Liftthe Baseband board up and away from the down converter chassis to complete the removal Remove the down converter with its chassis See Figure 6 25 a Unplug the cables from these connectors on the down converter J3 J5 J6 IO J6 RP J7 CN9 CN13 and CN15 b Remove the one screw at hinge c Liftthe down converter with its chassis up and away from the main chassis 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures From J6 RF on the down converter From J7 on the down converter From J5 on the D down converter C3 C To J450 on A13 CN13 CNi5 e From J430 To CN15 on the 0 on A13 down converter From J410 on A13 Nu From W31 on A5 22 W38 from From ra Left side 10 MHz REF onn OUTPUT From J610 o
92. button to select the Roll mode b Press the START STOP button to start data acquisition Create a trigger mask Do step 3 to make the trigger mask Modify the 3026 controls Press TRIG gt Trig Mask Condition gt Freq Mask and select Inside 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification 18 19 20 21 22 23 24 25 26 27 Acquire data a Press the START STOP button to stop the Roll acquisition b Press the ROLL BLOCK button to select the Block mode c Press the START STOP button again to start the Block acquisition Check the trigger Check that the 3026 is not triggered Modify the signal generator control Turn off the RF output of the generator Check the trigger Check that the 3026 is triggered The spectrum waveform displays on screen Modify the 3026 controls Press TRIG gt Trig Mask Condition gt Freq Mask and select Break Acquire data Press the START STOP button to start data acquisition Check the trigger Check that the 3026 is not triggered Modify the signal generator control Turn on the RF output of the generator Check the trigger Check that the 3026 is triggered The spectrum waveform displays on screen Disconnect the hookup a Press DISPLAY b Disconnect the cable at RF INPUT 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 29 Performance Verification External Trigger Test 4 30
93. cal and or electrical components that are replaceable for the analyzer Use this list to identify and order replacement parts The following table describes each column in the parts list Parts list column descriptions Column Column name Description 1 Figure amp Index number Items in this section are referenced by component number 2 Tektronix part number Use this part number when ordering replacement parts from Tektronix 3and4 Serial number Column three indicates the serial number at which the part was first effective Column four indicates the serial number at which the part was discontinued No entries indicates the part is good for all serial numbers 5 This indicates the quantity of parts used 6 Name amp Description An item name is separated from the description by a colon Because of space limitations an item name may sometimes appear as incomplete Use the U S Federal Catalog handbook H6 1 for further item name identification 7 Mfr code This indicates the code of the actual manufacturer of the part Code to name and address cross reference is located after this page 8 Mfr part number This indicates the actual manufacturer s or vendor s part number Abbreviations Abbreviations conform to American National Standard ANSI Y 1 1 1972 Mfr Code to Manufacturer The following table cross indexes codes names and addresses of manufacturers Cross Index vendors of components listed in the parts lis
94. can evaluate the performance of radio devices with simple operation Moreover four types of data display functions offered in the system can allow you to analyze the acquired data more precisely Features 3026 has the following features m Measurement frequency range 50 Hz to 3 GHz m Measurement span 100 Hz to 3 GHz m Complete real time frequency analysis W Concurrent processing of real time frequency analysis and analog modula tion analysis m Provides comprehensive measurement functions to evaluate radio devices such as occupied bandwidth OB W adjacent channel leakage power ACP and power consumption m Four types of data display m Spectrum display m Spectrogram display m Waterfall display m Analog demodulation display AM PM FM and FSK 3026 3 GHz Real Time Spectrum Analyzer Service Manual 1 1 Specifications A range of trigger functions m Mask pattern trigger m Level trigger m External trigger Simultaneous data acquisition in frequency domain and time domain 6 5 inch full color TFT display Equipped with a hard disk drive and a 3 5 inch floppy disk drive A selection of interface ports m GPIB port m 10 BASE T port m VGA output port m Printer port Targets The 3026 can perform complete real time analysis for the following 1 2 Analog modulation analysis AM PM FM and FSK Variation analysis in PLL frequency Jitter in reference oscillator of a mobile telephone localization of a radio
95. cover Power supply A10 Sub Power board S S S SS S S o o o M3 Filter board Figure 6 6 Power supply modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 17 Removal and Installation Procedures AC line filter Rear panel Connector cover BNC cable assembly Figure 6 7 Rear panel modules 6 18 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Procedures for External Modules Do the Access Procedure page 6 13 before doing any procedure in this group This group contains the following procedures m Front panel knob m Line cord W Rear cover and cabinet m Trim ring and menu buttons m EMI gaskets Front panel assembly m Front panel connectors 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 19 Removal and Installation Procedures Front Panel Knob 1 x gt Release dba SSS lt Hex wrench inch Front panel knob Assemble equipment and locate modules to be removed a Have handy a 46 inch hex wrench Item 6 b Find the module to be removed in the locator diagram External modules Figure 6 3 page 6 14 Orient instrument Set the 3026 so its bottom is down on the work surface and its front is facing you Remove knob Loosen the setscrew securing the knob using the inch hex wrench Pull the knob toward you to remove it See Figure 6 8 Reinstallation Place the knob on
96. ct checking of warranted specifica tions They require more time to perform and suitable test equipment is required Refer to Equipment Required on page 4 9 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 1 Performance Verification Conventions Throughout these procedures the following conventions apply m Each test procedure uses the following general format Title of Test Equipment Required Prerequisites Procedure m Each procedure consists of as many steps substeps and subparts as required to do the test Steps substeps and subparts are sequenced as follows 1 First Step a First Substep m First Subpart m Second Subpart b Second Substep 2 Second Step m Instructions for menu selection follow this format FRONT PANEL BUTTON gt Bezel Menu Button gt Bezel Submenu Button For example Press SETUP gt Range 10M 3GHz NOTE For details of buttons keys knob and connectors refer to Section 2 Operating Basics m In steps and substeps the lead in statement in italics instructs you what to do while the instructions that follow tell you how to do it In the example step below Set the 3026 controls by doing Press SETUP gt Range gt 10M 3GHz Set the 3026 controls Press SETUP gt Range gt 10M 3GHz STOP The symbol at the left is accompanied by information you must read to do the procedure properly 4 2 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performa
97. cy A fault occurs only for the time domain data RF3001 down converter W16 A7 DDC board DDC board A6 FFT board A8 Memory board 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting Table 6 7 Symptoms and faulty modules Cont Symptom Possible faulty module A fault occurs only for the frequency domain data A6 FFT board Freq Ampl Freg I and Freq Q A8 Memory board W18 A fault occurs only for the in phase data Time I and Freg I A6 FFT board A7 DDC board A fault occurs only for a certain frame period A6 FFT board A fault occurs only for a certain block size A8 Memory board The internal trigger is disabled A6 FFT board A7 DDC board A8 Memory board W18 The external trigger is disabled A8 Memory board W17 The 3026 does not power on with the ON STBY switch A2 A3 Key board ON STBY switch Bezel button W30 The 3026 cannot be shut down with the ON STBY switch A1 Mother board A10 Sub Power board ON STBY switch The OVERLOAD indicator does not go off even if the input RF3001 down converter signal is fully lowered A5 Baseband board W16 The LCD displays nothing the screen is black LCD unit CPU board W21 W22 W23 The LCD display colors are abnormal LCD unit W19 W20 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 79 Troubleshooting 6 80 3026 3 GHz Real Time Spectrum Analyzer Service Manual Accessing the BIOS You can access the BI
98. d Installation Procedures To PRINTER From J700 on A5 Te PEU BOAN XP Printer port LAE Baseband board A GPIB port PRINTER A6 FFT board DDC board From J04 on A1 From J02 on A1 CPU board Figure 6 22 Daughter boards removal 6 42 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures CPU Board 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the module to be removed in the locator diagram Board modules Figure 6 5 page 6 16 c Do the procedures A7 DDC Board and A8 Memory Board to remove those modules which makes accessing the CPU board easier 2 Orient instrument Set the analyzer so its left side is down on the work surface and its right side is facing you 3 Remove the CPU board See Figure 6 22 a Unplug the cables at IDE FLOPPY PRINTER COM2 and LCD on the CPU board b Remove the two screws attaching the CPU board to the main chassis using a screwdriver with a size 2 Phillips tip c Liftthe board up away from the Mother board to complete the removal 4 Reinstallation a Do in reverse order step 3 to reinstall the CPU board b Referto A7 DDC Board and A6 Memory Board to reinstall those modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 43 Removal and Installation Procedures 6 44 A1 Mother
99. d and on page 6 21 and Rear Cover and Cabinet on page 6 22 Procedures for Rear Panel Modules Rear panel p 6 55 AC line filter p 6 56 BNC connectors p 6 58 Procedures for Internal Modules ls Fan p 6 30 the module Floppy disk drive p 6 32 in Figure Hard disk drive p 6 34 6 4 Solid state disk p 6 34 Display module p 6 36 Figure 6 2 Guide to removal procedures 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 13 Removal and Installation Procedures Line cord Rear cover Cabinet EMI gasket Front panel assembly Trim ring Front panel connectors Figure 6 3 External modules 6 14 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Fan frame Fan LCD module Bracket EMI core Bracket Bracket ET Hard disk drive Floppy disk Solid state disk Figure 6 4 Internal modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 15 Removal and Installation Procedures Shield cover Board retainer gt A1 Mother board FFT board A7 DDC board 7 A8 Memory board bim CPU board Down converter 5 Baseband board Figure 6 5 Board modules 6 16 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Top chassis Insulator 12 DC Power 2 board A11 DC Power 1 board Shield
100. d board A6 A8 DDC board FFT board Internal 10 MHz Memory board reference oscillator 10 MHz REF OUTPUT REF INPUT A2 A3 A13 Filter Keyboard 1 2 Local bus gt A1 Mother board Y ISA bus gt LCD inverter unit 6 4 LCD module A12 DC Power 2 Printer port CPU Board VGA port 32 MB Memory A11 DC Power 1 LCD Controller 10 BASE T Control Low voltage power supply 2 5 HDD 2 5 SSD 3 5 FD A10 Sub Power Figure 9 1 Block diagram 3026 Service Manual 9 3 9 4 3026 Service Manual W10 J100 IF IN W31 Control Baseband board J610 REF IN Power W36 RF J6 0 07 nn OUTPUT een Down converter J620 10MHz REF W38 I Thermo W40 1 2 Cosas 10 3 INPUT JL EE Power Analog Digital z S ses sum ps m n IO CN13 IO CN9 W17 J18 EXT TRIG OO J17 INPUT B J13 Power J12 Power J07 J06 W28 W29 J430 J410 J450 A13 Filter board Lower area Left area W910 W900 6 7 For Down For Baseband converter board Floppy disk drive Hard disk drive Solid state disk A11 DC Power 1 board W220 W210 W200 J310 J320 A12 DC Power 2 board J300 W350 3026 Service Manual W320 W330 J360 W360 J700 A1 Mother board W16 50 A7 DDC board J600 W18
101. d for module removal Table 6 6 Normal supply voltage Table 6 7 Symptoms and faulty modules Table 6 8 3026 system files Table 7 1 Options Table 7 2 Standard accessories Table 7 3 Optional accessories 3026 3 GHz Real Time Spectrum Analyzer Service Manual Table of Contents X 3026 3 GHz Real Time Spectrum Analyzer Service Manual SS wx General Safety Summary To Avoid Fire or Personal Injury Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as specified Only qualified personnel should perform service procedures Use Proper Power Cord Use only the power cord specified for this product and certified for the country of use Use Proper Voltage Setting Before applying power ensure that the line selector is in the proper position for the power source being used Connect and Disconnect Properly Do not connect or disconnect probes or test leads while they are connected to a voltage source Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded
102. dBm 20 dB 10 dBm 10 dBm 30 dB 20 dBm 20 dBm 40 dB 30 dBm 30 dBm 50 dB 40 dBm 40 dBm 60 dB 50 dBm 50 dBm 70 dB 60 dBm a Setthe reference level and step attenuator to one of the settings listed in Table 4 5 not yet checked Start with the 0 dB setting b Press the START STOP button to start data acquisition c Waituntil the message averaging complete is displayed on the upper left corner of the screen d Press the START STOP button again to stop data acquisition e Press MARKER gt Peak Find Highest Peak to place the marker on the peak signal f Read the peak level and confirm that the value is within 1 dBm of the input level 6 Repeat step 5 until all reference level settings listed in Table 4 5 are checked 7 Disconnect the hookup a Press DISPLAY MENU gt Screen Trace Active Raw b Disconnect the cable at RF INPUT 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 37 Performance Verification RF Flatness Test This procedure checks that the RF flatness is within the specified range Equipment One signal generator Item 2 One PC Item 8 One N N cable Item 10 Two GPIB cables Item 11 One RF flatness check program Item 13 One SG flatness floppy disk Item 14
103. e 5 8 Reconfiguration of down converter Page 5 19 NOTE Whenever replacing the down converter do the procedure Reconfiguration of Down Converter on page 5 19 3026 3 GHz Real Time Spectrum Analyzer Service Manual 5 1 Adjustment Procedures Requirements for Adjustments Before doing the adjustments note the following requirements Personnel This procedure is only to be performed by trained service technicians Warm Up Period This analyzer requires a 20 minute warm up time in a 20 C to 30 C environ ment before it is adjusted Adjustments done before the operating temperature has stabilized may cause errors in performance Test Equipment Table 5 2 lists all test equipment required to adjust the analyzer 5 2 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures Equipment Required Table 5 2 Test equipment Table 5 2 lists the test equipment required to adjust the analyzer Item description Example Purpose 1 Frequency counter Frequency range 10 MHz Anritsu MF1603A option 01 Clock frequency adjustment Reference output 10 MHz Aging rate 5 x 10 9 day 2 Signal generator 10 kHz to 3 GHz Accuracy 1 dB HP8648C option 1E5 1 RF flatness compensation Output level 70 dBm to 13 dBm Function FM 3 RF power meter 2 10 MHz to 3 GHz HP437B RF flatness compensation 4 RF power sensor 2 10 MHz to GHz RF Flatness lt 3 HP8481A RF flatness compen
104. e Spectrum Analyzer Service Manual 4 41 Performance Tests 3026 Test Record Page 1 of 4 Serial Number Certificate Number Calibration Date Technician 10 MHz reference output test High limit 10 MHz frequency accuracy 9 999 999 Hz 10 000 001 Hz 10 MHz reference input test Abnormal 10 MHz reference input Center frequency accuracy at 5 MHz 4 9999973 MHz 5 0000027 MHz Flatness and aliasing tests Low limit Test result High limit Flatness 2 0 dB L 7 E 3 ee EMEN FE DO O EE EN 6 MHz 2 0 dB 7 MHz 2 0 dB 8 MHz 2 0 dB 9 MHz 2 0 dB Aliasing in these 1 MHz 2 MHz 60 dBm frequency ranges 9 MHz 10 MHz 60 dBm Attenuator test High limit Level accuracy at these reference levels 4 42 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Tests 3026 Test Record Page 2 of 4 Attenuator test Overload Span and center frequency tests Span Center frequency High limit Span 10 MHz 0 9875 MHz 1 0125 MHz Content a MRA 4 9875 MHz 5 0125 MHz 8 9875 MHz 9 0125 MHz Span 5 MHz 2 99375 MHz 3 00625 MHz SMN 4 99375 MHz 5 00625 MHz 6 99375 MHz 7 00625 MHz Span 2MHz 4 196875 MHz 4 203125 MHz 5 796875 MHz 5 803125 MHz Span 1 MHz 4 5984375 MHz 4 6015625 MHz Contented 4 9984375 MHz 5 0015625 MHz 5 3984375 MHz 5 4015625 MHz Cener heg asus 0 99996875 MHz 1 00003125 MHz 3026 3 GHz Real Time
105. e generator Connect the generator output connector through a 50 Q N N coaxial cable to the 3026 RF INPUT connector See Figure 4 9 2 Check the span and the center frequency Do these procedure for each combination of the settings specified in Table 4 4 a Modify the 3026 and the signal generator controls Set the span and center frequency of the 3026 and the test frequency of the generator as listed in Table 4 4 Table 4 4 The instrument settings for the span and center frequency test 3026 Signal generator Span Center frequency Test frequency 10 MHz 5 MHz 1 MHz 5 MHz 9 MHz 5 MHz 5 MHz 3 MHz 5 MHz 7 MHz 2 MHz 5 MHz 4 2 MHz 5 MHz 5 8 MHz 1MHz 5 MHz 4 6 MHz 5 MHz 5 4 MHz 500 kHz 5MHz 4 8 MHz 5 MHz 5 2 MHz 200 kHz 5 MHz 4 92 MHz 5 MHz 5 08 MHz 100 kHz 5 MHz 4 96 MHz 5 MHz 5 04 MHz 50 kHz 1MHz 980 kHz 1 MHz 1 02 MHz 20 kHz 1MHz 992 kHz 1 MHz 1 008 MHz 10 kHz 1MHz 996 kHz 1 MHz 1 004 MHz 5 kHz 100 kHz 98 kHz 100 kHz 102 kHz 2 kHz 100 kHz 99 2 kHz 100 kHz 100 8 kHz 1 kHz 100 kHz 99 6 kHz 100 kHz 100 4 kHz 500 Hz 10 kHz 9 8 kHz 10 kHz 10 2 kHz 200 Hz 10 kHz 9 92 kHz 10 kHz 10 08 kHz 100 Hz 10 kHz 9 96 kHz 10 kHz 10 04 kHz b Acquire data Press the START STOP button to start data acquisition 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 21 Performance Verification c Check the frequency m Press the START STOP button to stop data acquisition m Pr
106. e synthesizers in the 3 GHz Down Converter unit and oscillators output signals locked to the 10 MHz reference frequency selected and distributed by the 3 GHz Down Converter LCD Display Unit The LCD display unit is a color 640 x 480 pixel 6 4 inch VGA compatible TFT LCD panel It displays user interface information created by the 486 CPU board The LCD interface output signal of the 486 CPU board is buffered in the LCD buffer logic on the A1 Mother board and then output to the LCD display unit 3026 3 GHz Real Time Spectrum Analyzer Service Manual 3 7 Theory of Operation Front Panel Key Boards A2 and A3 Hard Disk Drive Floppy Disk Drive 3 8 The Front Panel Key board 1 and 2 consist of the following blocks Single chip key controller Micro Controller MC68HC705 On chip ROM RAM Push keys Menu select push keys Rotary encoder LEDs RS 232C to from TTL Level Conversion Logic Rotary encoder changes span frequency and reference level LEDs show the selected key acquisition state and mode Key data is sent to the CPU board coded in RS 232C serial data format The 486 CPU board communicates with MC68HC705 MPU using the RS 232C COMI serial port RS 232C to from TTL Level Conversion Logic controls the communication between the 486 CPU and the MC68HC705 Key Board 1 and 2 Controller CPU by the RS 232C serial data line The hard disk unit includes the 2 1 G byte Hard Disk Drive and Solid State Disk 2 1 G byte
107. eal Time Spectrum Analyzer Service Manual Installation Repackaging Instructions Installed Options If you ship the analyzer pack it in the original shipping carton and packing material If the original packing material is not available package the instrument as follows 1 Obtain a corrugated cardboard shipping carton with inside dimensions at least 15 cm 6 inches taller wider and deeper than the instrument The shipping carton must be constructed of cardboard with 170 kg 375 pound test strength 2 If you are shipping the instrument to a Tektronix field office for repair attach a tag to the instrument showing the instrument owner and address the name of the person to contact about the instrument the instrument type and the serial number 3 Wrap the instrument with polyethylene sheeting or equivalent material to protect the finish 4 Cushion the instrument in the shipping carton by tightly packing dunnage or urethane foam on all sides between the carton and the analyzer Allow 7 5 cm 3 in on all sides top and bottom 5 Sealthe shipping carton with shipping tape or an industrial stapler NOTE Do not ship the instrument with a diskette inside the floppy disk drive When the diskette is inside the drive the disk release button sticks out This makes the button more prone to damage than otherwise Your instrument may be equipped with one or more instrument options Except for the line cord options describ
108. ears at the center of display See Figure 2 3 Tektronix 4945 Paulus Sugctrum Copyright Sony Tektronix Corporation _ 1998 All rights reserved Hardware Uersion 1 82 Firmware Version 1 11 Firmware Build 13 May 1998 17 25 08 Serial number J388124 Power on selftest Figure 2 3 System information In this condition if you press any front panel button or turn the general purpose knob the system information will be removed and the initial screen appears as shown in Figure 2 4 8LKua1 ggg Hz 288 kHz 8 8 dBm MAY 11 1998 13 50 09 CF 1908000 6080 HZ SPAN 288 kHz Vt RPM VIAM 219 0000 Da 0 629 59 89 9 Da dM s 899 Figure 2 4 Initial screen 3026 3 GHz Real Time Spectrum Analyzer Service Manual 2 9 Operating Instructions Observing Spectrum SUMMARY This section describes how to change the basic settings to view the spectrum after the system has been installed Acquiring Data When power is turned on the initial settings 100 MHz center frequency and 2 MHz span First change these settings to view the spectrum 1 Press the START STOP button See Figure 2 5 The LED on the top left of the button lights up and a trace appears on the display HDD MARKER TOGGLE START STOP button C SELECT
109. ed by Table 2 2 on page 2 2 all options and optional accessories are listed and described in Section 7 Options For further information and prices of instrument options see your Tektronix Products catalog or contact your Tektronix Field Office 3026 3 GHz Real Time Spectrum Analyzer Service Manual 2 5 Installation 2 6 3026 3 GHz Real Time Spectrum Analyzer Service Manual F snrrum Operating Instructions Before doing service read the following operating instructions These instruc tions are at the level appropriate for servicing these analyzer The User Manual contains more complete operating instructions Additional instructions are integrated into the service procedures found in later sections of this manual For Instance the procedures found in the section Performance Verification contain instructions for making the front panel settings required to check each instrument characteristic included there Also the general instructions for operating the analyzer s internal diagnostic routines are found in Section 6 Maintenance You may also find the Product Description in Section 1 useful for understanding how the analyzer functions Preparations To start this tutorial the following devices are required m Signal generator or function generator Example Arbitrary Waveform amp Function Generator Sony Tektronix AFG320 Two BNC cables m One N BNC conversion connector standard accessory 3026 3 GHz Real Time Spect
110. ed in the locator diagram Board modules Figure 6 5 page 6 16 c Do the procedure Board Retainer and Shield Cover on page 6 39 and Rear Panel on page 6 56 to remove those modules Orient instrument Set the analyzer so its left side is down on the work surface and its right side is facing you Remove the A6 FFT board See Figure 6 22 a Unplug the cables at these connectors m J1200 on the A8 Memory board m PRINTER on the CPU board b Remove the one screw attaching the FFT board to the main chassis using a screwdriver with a size 2 Phillips tip c Liftthe board up away from the Mother board to complete the removal Reinstallation a Do in reverse order step 3 to reinstall the A6 FFT board b Referto Board Retainer and Shield Cover on page 6 39 and Rear Panel on page 6 56 to reinstall those modules Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the module to be removed in the locator diagram Board modules Figure 6 5 page 6 16 c Do the procedure Board Retainer and Shield Cover on page 6 39 and Rear Panel on page 6 56 to remove those modules Orient instrument Set the analyzer so its left side is down on the work surface and its right side is facing you 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures 3 Remove the A7 DDC board See Figure 6 22 a Unplug the cable at J10
111. emoved in the locator diagram Internal modules Figure 6 4 page 6 15 Orient instrument Set the analyzer so its bottom is down on the work surface and its front is facing you 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures 3 Remove floppy disk drive with bracket See Figure 6 17 a Disconnect the flat cable at J07 on the Mother board from the top window using the tweezers Refer to Al Mother Board on page 6 44 b Using a screwdriver with a size 2 Phillips tip remove the four screws securing the floppy disk drive bracket to the main chassis c Pull out the floppy disk drive with bracket d Disconnect the flat cable from the floppy disk drive 4 Remove floppy disk drive from bracket Using a screwdriver with a size 1 Phillips tip remove the four screws securing the floppy disk drive to the bracket 5 Reinstallation Do in reverse order steps 3 and 4 to reinstall the floppy disk drive Use this hole to disconnect the floppy disk cable Figure 6 17 Floppy disk drive removal 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 33 Removal and Installation Procedures Hard Disk Drive and 1 Assemble equipment and locate modules to be removed Solid State Disk a Have available a screwdriver with a size Phillips 42 tip Items 1 and 3 and a 1 6 inch open end wrench Item 8 b Locate the modules to be removed in the locator diagram
112. ency difference is indicated as a positive value See Figure 2 15 ob MARKER1 FREQ 15 F MRG CF 16 888 868 Hz SPAN 18 MHz 8 Active 9 0 8 15 666 000 00 Hz Bee 28 52 _ 2 888 888 88 Hz 8 23 di 20 0 00 88 08 038 399 30 0 40 0 50 0 60 0 70 0 80 0 90 0 100 0 EAT Gey Geos ma 2 029009 8 Figure 2 15 Measurement of frequency difference with dual markers 3026 3 GHz Real Time Spectrum Analyzer Service Manual 2 19 Operating Instructions Trigger and Mask Pattern Creating a Trigger Mask 2 20 Changing the Basic Settings Pattern SUMMARY Using a trigger mask pattern triggering is available in two dimensions frequency and level How to create a trigger mask pattern and how to receive a trigger are described below In this tutorial a trigger is made to occur by turning from the CH2 output of the signal generator Before creating a trigger mask pattern change the basic settings 25 Change the span to 2 MHz to make the Block mode data acquisition possible m Press the Span 2 MHz bottom button 26 The spectrum of the modulated wave will appear on the display m Change the CH2 output frequency of the generator to 500 KHz Create a trigger region over the spectrum of the modulated wave so that a trigger will occur when the wave is turned on After the setup procedure shown below a trigger will occur if the spectrum enters this region 1 when the spectru
113. er so its bottom is down on the work surface and its rear is facing you Open the top chassis See Figure 6 15 a Remove the seven screws securing the top chassis to the main chassis b Open the top chassis Remove the fan See Figure 6 16 a Disconnect the ribbon interconnect cable from J360 on the A12 DC Power 2 board b As shown in Figure 6 16 slide 2 in the direction indicated by arrow 1 while pushing it and then remove the fan and fan frame c Release the four hooks securing the fan then separate the fan and fan frame 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures A12 DC Power 2 board Figure 6 15 Opening the top chassis 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 31 Removal and Installation Procedures 6 32 Floppy Disk Drive r Fan Fan frame y i To J360 on A12 DC Power 2 board Figure 6 16 Fan and fan frame removal 5 1 Reinstallation a Secure the fan to the fan frame b Connect the fan cable to J360 on the A12 DC Power 2 board c Align the four protrusions of the fan frame with the holes of the chassis Slide the fan and fan frame to the lower left until the fan is in place Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 1 and a size 2 Phillips tips Items 1 2 and 3 and an angle tip tweezers Item 13 b Locate the module to be r
114. ervice Manual 1 7 Specifications 1 8 3026 3 GHz Real Time Spectrum Analyzer Service Manual Specifications Nominal Traits This section contains a collection of tables that list the various nominal traits that describe the 3026 Real Time Spectrum Analyzer Electrical and mechanical traits are included Nominal traits are described using simple statements of fact such as Four all identical for the trait Output Channels Number of rather than in terms of limits that are performance requirements Table 1 11 Nominal traits Frequency Characteristics Description Range RF mode 10 MHz to 3 GHz BASEBAND mode 50 Hz to 10 MHz Span RF mode 100 Hz to 3 GHz BASEBAND mode 100 Hz to 10 MHz Stability of Frequency Standard 5 x 10 9 day Residual FM Maximum 3 Hz Table 1 12 Nominal traits Amplitude Characteristics Description 500 lt 1 5 reference level gt 20 dBm 12 bits 25 6 MS s 0 3 dB 10 MHz 60 dB gt 15 5 MHz Input impedance Input VSWR A D converter Input anti aliasing filter 3026 3 GHz Real Time Spectrum Analyzer Service Manual 1 9 Specifications Table 1 13 Nominal traits FFT Characteristics Description Number of FFT points 1024 or 256 FFT window Blackman Harris Hamming Rectangle Operation Accuracy 16 bit Block floating point Overlapping 1024 points 512 points at 2 MHz span 768 points at 1 MHz span 896 points at 500 kHz span
115. es related to mainte nance Section 2 Operating Information covers instructions useful when operating the analyzer in order to troubleshoot it It also details the service strategy and lists options for obtaining maintenance service and for replacing failed modules Section 3 Theory of Operation contains a circuit description at the module or block level Section 4 Performance Verification contains procedures that may be useful in isolating problems to modules by testing analyzer performance Section 5 Adjustment Procedures addresses after repair adjustment and the interval between periodic adjustments It contains a procedure for adjusting the internal circuits of the analyzer Section 9 Diagrams contains a block diagram using individual modules as blocks and an interconnection diagram showing connections between the modules Section 10 Mechanical Parts List lists all field replaceable modules by part number 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 1 Maintenance Preparation A Preventing ESD Before servicing this product read the Safety Summary and Introduction at the front of the manual and the ESD information below CAUTION Static discharge can damage any semiconductor component in this analyzer When performing any service which requires internal access to the analyzer adhere to the following precautions to avoid damaging internal modules and their components due to electrosta
116. ess MARKER gt Peak Find gt Highest Peak m Check that the peak signal is within 1 bin 1 click by turning the knob around of the test frequency 3 Disconnect the hookup Disconnect the cable at RF INPUT 4 22 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification Frame Update Interval Test This procedure checks the frame update interval Equipment One signal generator Item 2 Required One function generator Item 4 One 50 Q BNC coaxial cable Item 9 One 50 Q N N coaxial cable Item 10 Prerequisites See page 4 8 3026 CE Function generator Signal generator fe Soe 0 feso 2 r a s S 0 gt 0 otc LS iololojolelelo 9 O External modulation input RF input 50 Q N N coaxial cable Output 50 Q BNC coaxial cable Figure 4 10 Initial test hookup 1 Install the test hookup and preset the instrument controls a Set the 3026 controls m Press the START STOP button to stop data acquisition Ug Press DISPLAY epe Spectrum Spectrogram m Press SETUP gt Range gt 50 10MHz m Press SETUP gt FFT gt FFT Pts and select 1024 m Press SETUP gt FFT gt Window Blackman Harris m Press the FREQ button a
117. esult is normal Pass is displayed If the test ended abnormally Fail is displayed Note that this analyzer cannot be checked sufficiently only by this self test 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification Calibration The calibration routine calibrates the amplifier gain based on the signal generator within the analyzer This calibration should be run when the analyzer is started or during operation NOTE Refer to section 5 Adjustment Procedures for full calibration If you perform this calibration when the analyzer is started carry out warm up for 20 minutes or more after the power is turned on This causes the analyzer electrical performance to be stable Then run the calibration When the ambient temperature varies by 3 C or more relative to that at the previous calibration when the analyzer is in operation WARM UP or CAL NEED is displayed in red in the hardware status display area see Figure 4 2 on the display screen This means that the analyzer prompts you to run the calibration When a CAL NEED message appears execute RF calibration 1888 888 Hz SPAN 1 MHz REF 6 6 dBm Figure 4 2 CAL NEED indication in status indication area 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 5 Performance Verification 4 6 When UNCAL is displayed in red run the calibration using the following procedure NOTE Stop data acquisition before star
118. g the 3066 or 3086 spectrum analyzer Item 5 See below m Method 2 Running the LabVIEW program Item 14 on PC Item 6 Refer to page 5 14 Method 1 Using the 3066 or 3086 spectrum analyzer Equipment One signal generator Item 2 One power meter Item 3 One power sensor Item 4 One spectrum analyzer Item 5 One N N cable Item 8 Two GPIB cables Item 9 One N adapter Item 12 One floppy disk Item 15 3026 3 GHz Real Time Spectrum Analyzer Service Manual 5 11 Adjustment Procedures 1 Setup the power meter and sensor a Connect the power meter and the power sensor See Figure 5 7 Power meter BEEN Power sensor r Sensor input Figure 5 7 Initial hookup for setting up the power meter and sensor b Warm up the power meter and sensor for more than 30 minutes c Press ZERO on the power meter d Connect the RF input of the power sensor to the power reference output of the power meter See Figure 5 8 Power meter 4 Power reference output Figure 5 8 Hookup for calibrating the power sensor e Turn on POWER REF and execute the calibration f Disconnect the RF input of the power sensor from the reference output of the power meter 5 12 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures Signal generator 2 Install the test hookup and preset the instrument
119. ghest Peak to place the marker on the peak signal Press the MARKER TOGGLE button to select the Noise marker F Using the keypad set the Noise marker frequency to 25 01 MHz 5 Check C N Read the C No value on the screen and confirm that the value is 100 dB Hz or higher 6 Disconnect the hookup a b Press MEASURE MENU gt Standard Measure Off Press DISPLAY MENU gt Screen Trace gt Active Raw Press MARKER gt Marker Setup gt Single Marker Disconnect the cable at RF INPUT 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 33 Performance Verification RF Reference Level Test This procedure checks the reference level error is within the specified range It uses the power meter power sensor and step attenuator to set the signal generator output the analyzer input accurately Equipment One signal generator Item 2 Sean One power meter Item 5 One power sensor Item 6 One step attenuator Item 7 Two 50 Q N N coaxial cables Item 10 Prerequisites See page 4 8 1 Setup the power meter and sensor a Connect the power meter and the power sensor See Figure 4 15 Power meter Power sensor Sensor input Figure 4 15 Initial hookup for setting up the power meter and sensor b Warm up the power meter and sensor for more than 20 minutes c Press ZERO on the power meter d Connect the RF input of the power sensor to the power
120. he counter controls Function 2 a rastis A FREQ Gate tme rn ne 2s 2 Check the frequency Check that the frequency of the counter shows 10 MHz 1 Hz 3 Disconnect the hookup Disconnect the cable at 10 MHz REF OUTPUT 4 10 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification 10 MHz Reference Input Test This procedure checks whether 10 MHz reference input works correctly Equipment Required One signal generator Item 2 One 50 Q BNC coaxial cable Item 9 One 50 Q N N coaxial cable Item 10 Prerequisites See page 4 8 Signal generator Output RF input 50 Q N N coaxial cable Figure 4 4 Initial test hookup 1 Install the test hookup and preset the instrument controls a Set the 3026 controls Press the START STOP button to stop data acquisition Press DISPLAY A Spectrum button Press SETUP gt Range gt 10M 3GHz Press SETUP gt FFT gt Window Blackman Harris Press SETUP gt FFT gt FFT Pts and select 1024 Press the FREQ button and set the frequency using the keypad rasen 1000 MHz 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 11 Performance Verification 4 12 m Press the REF LEVEL button and set the reference level using the key
121. he output level of the signals from the input buffer is monitored by the excessive input signal detection circuit and OVERLOAD is displayed on the LCD Liquid Crystal Display screen if the specified level is exceeded In the secondary digital mixer frequency conversion depending on the center frequency setting is performed Band limiting suitable for the span settings and sample rate changing are performed by the subsequent multiple step digital filter FFT Board A6 The A6 FFT board sends I Q data converted into the frequency domain time domain data without conversion and trigger signals to the A8 Memory board The FFT board consists of 5 blocks Input FIFO FFT processor Output FIFO Clock generating circuit Distributing circuit Input FIFO The input FIFO consists of multiple dual port RAMs and a control circuit It accumulates a block of input data in units of 1024 points or 256 points from the DDC board at data rate varying with setting of span and sends the data to the FFT processor at a fixed clock rate 3026 3 GHz Real Time Spectrum Analyzer Service Manual 3 3 Theory of Operation 3 4 Memory Board A8 FFT Processor The FFT processor converts time domain data in blocks of 1024 points or 256 points into frequency domain data at high speed The output from the FFT which appears in bursts is input to the output FIFO from which the data is sent to the A8 memory board at more regular rate Output FIFO
122. hing the RF input connector to the chassis using a screwdriver with a size 2 Phillips tip Remove the trigger input connector See Figure 6 14 a Disconnect the cable W17 from the connector b Remove the four screws attaching the trigger input connector to the chassis using a screwdriver with a size 2 Phillips tip Remove the bracket Remove the three screws attaching the bracket to the chassis using a screwdriver with a size 2 Phillips tip Reinstallation a Doinreverse order step 3 through 5 to reinstall the front panel connec tors b Reinstall the trim ring referring to the procedure Trim Ring and Menu Buttons on page 6 24 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Bracket External trigger input RF input Figure 6 14 Front panel connectors removal 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 29 Removal and Installation Procedures Procedures for Internal Modules Do the Access Procedure on page 6 13 before doing any procedure in this group The procedures are presented in the order listed Fan 1 6 30 Fan Floppy disk drive Hard disk drive and solid state disk Display module Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the fan in the locator diagram nternal modules Figure 6 4 page 6 15 Orient instrument Set the analyz
123. is down on the work surface and its rear is facing you Disconnect line cord Unplug the line cord from its receptacle at the rear COVer Remove rear cover Using a screwdriver with a size 2 Phillips tip remove the four screws securing the rear cover to the analyzer Lift off the rear cover Orient instrument Set the 3026 so its bottom is down on the work surface and its front is facing you Remove cabinet a Using screwdriver with a size 2 Phillips tip remove the screw securing the left side of the cabinet to the analyzer b Grasp the right and left edges of the cabinet toward the back c Slide the cabinet off the analyzer Take care not to bind or snag the cabinet on internal cabling as you remove it Reinstall cabinet and rear cover a Do step 6 in reverse order to reinstall the cabinet Take care not to bind or snag the cabinet on internal cabling redress cables as necessary When sliding the cabinet be sure that the front edge of the cabinet aligns with the groove containing the four EMI shields on the trim ring b Do step 4 in reverse order to reinstall the rear cover When reinstalling the four screws at the rear cover tighten them to a torque of 10 kg cm 8 7 in Ibs c Plug the line cord to its receptacle at the rear cover This completes the 3026 reassembly 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Rear cover Cabinet Figu
124. its FFT 1 10 Table 1 14 Nominal traits Filter 1 11 Table 1 15 Nominal traits Trigger Acquisition 1 11 Table 1 16 Nominal traits System control 1 12 Table 1 17 Nominal traits ACline power 1 12 Table 1 18 Nominal traits Mechanical 1 12 Table 1 19 Certifications and compliances 1 13 Table 2 1 Power cord conductor identification 2 2 Table 2 2 Power cord identification 2 2 Table 4 1 Performance tests 4 7 Table 4 2 Test equipment 4 9 Table 4 3 Level accuracy 4 19 Table 4 4 The instrument settings for the span and center frequency test oc rir en 4 21 Table 4 5 The instrument settings for the RF reference level test 4 37 Table 5 1 Adjustments 5 1 Table 5 2 Test equipment 5 3 Table 6 1 Relative susceptibility to static discharge damage 6 3 Table 6 2 External inspection check list 6 5 Table 6 3 Internal inspection checklist 6 6 viii 3026 3 GHz Real Time Spectrum Analyzer Service Manual Table of Contents Table 6 4 Summary of procedures Table 6 5 Tools require
125. l Required only when creating a flatness correction data file for the HP8648 signal generator You can choose two ways to create the file using the spectrum analyzer 3066 3086 or running the SG flatness measurement program SGFLATFILE EXE in LabVIEW on PC The program file can be downloaded from the Tektronix webpage found at http www tektronix com Adjustment Procedures Adjustments Clock Frequency This procedure adjusts the 3026 internal clock frequency Adjustment Equipment Required One frequency counter Item 1 One 50 Q BNC coaxial cable Item 7 One 30 cm extension cable Item 10 One 50 Q terminator Item 11 NOTE Warm up the frequency counter for more than 24 hours 1 Access the A5 Baseband board Refer to Removal and Installation Proce dures in Section 6 for the detail a b 5 4 Turn off the 3026 Remove the cabinet Disconnect the rigid cable from the RF INPUT connector Remove the cable that connects J700 on the A5 Baseband board to J100 on the A7 DDC board Open the down converter chassis to access the A5 Baseband board Re connect the cable between J700 on the A5 Baseband board and J100 on the A7 DDC board with a 30 cm extension cable Item 10 See Figure 5 1 and 5 2 Turn on the 3026 Warm up the 3026 for more than 20 minutes 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures DDC board A5 Baseband board
126. l modules Any electrical or mechanical module assembly or part listed in Section 10 of this manual is a module WARNING Before doing this or any other procedure in this manual read the Safety Summary found at the beginning of this manual Also to prevent possible injury to service personnel or damage to this analyzer s components read Installation in Section 2 and Preventing ESD in this section This subsection contains the following items W This preparatory information that you need to properly do the procedures that follow m List of tools required to remove and disassemble all modules m Five module locator diagrams for finding the External modules see Figure 6 3 Internal modules see Figure 6 4 Board modules see Figure 6 5 Power supply modules see Figure 6 6 and Rear panel modules see Figure 6 7 in this analyzer m Procedures for removal and reinstallation of the electrical and mechanical modules m A disassembly procedure for removal of all the major modules from the analyzer at one time and for reassembly of those modules into the analyzer Such a complete disassembly is normally only done when completely cleaning the analyzer Instructions for doing the actual cleaning are found under Inspection and Cleaning at the beginning of this section m Module disassembly procedures WARNING Before doing any procedure in this subsection disconnect the power cord from the line voltage source Fail
127. llation Do in reverse order steps 3 and 4 to reinstall the rear panel 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Figure 6 30 Rear panel modules removal 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 57 Removal and Installation Procedures Rear BNC Cable 1 Assemble equipment and locate modules to be removed Assembl y a Have handy a 44 inch open end wrench Item 7 b Locate the modules to be removed in the locator diagram Rear panel modules Figure 6 7 page 6 18 2 Orient instrument Set the analyzer so its top side is down on the work surface and its rear is facing you 3 Remove BNC cable assembly See Figure 6 31 a Using the open end wrench unscrew the nut securing the BNC connector to the main chassis b Referring to the procedure Down Converter and A5 Baseband board on page 6 46 disconnect the cable at J3 W37 10 MHz REF INPUT and J6 IO W38 10 MHz REF OUTPUT on the down converter Pull out the BNC cables from the chassis to complete the removal 4 Reinstallation Do in reverse order step 3 to reinstall the BNC cable assembly imd down converter BE 37 0 23 i INPUT 10 MHZ REF OUTPUT Figure 6 31 Rear BNC cable assembly removal 6 58 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting This subsection contains information and procedures designed
128. loppy side key This copies the file sflatoff txt under the following directory to the floppy disk c Program Files SONY Tektronix 3066 sys for the 3066 c Program Files SONY Tektronix 3086 sys for the 3086 6 Disconnect the hookup a Remove the floppy disk by pressing the eject button b Power off the power meter signal generator and spectrum analyzer c Disconnect the GPIB cables d Disconnect the power sensor and the N N cable Method 2 Running the LabVIEW program on PC Equipment One signal generator Item 2 Required One power meter Item 3 One power sensor Item 4 One PC Item 6 One N N cable Item 8 Two GPIB cables Item 9 One N adapter Item 12 One SG flatness measurement program Item 14 One floppy disk Item 15 5 14 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures 1 Setup the power meter and sensor a Connect the power meter and the power sensor See Figure 5 10 Power meter Power sensor E Sensor input Figure 5 10 Initial hookup for setting up the power meter and sensor b Warm up the power meter and sensor for more than 30 minutes c Press ZERO on the power meter d Connect the RF input of the power sensor to the power reference output of the power meter See Figure 5 11 Power meter Ee Power reference output Figure 5 11 Hookup for
129. m breaks out of the trigger mask 27 Create a trigger region on the spectrum of the modulated wave located on the left side See Figure 2 16 a Press the TRIG button b Press the Edit Freq Mask bottom button c Press the Display side button to select On This operation changes the color inside the scale to blue and makes the other items in the side menu available for creating a trigger mask d Place an edit marker a red arrow marker on the bottom left of the region m Press the Dir side button and select Hori Next use the general purpose knob to set the horizontal position m Press the Dir side button and select Vert Next use the general purpose knob to set the vertical position 3026 3 GHz Real Time Spectrum Analyzer Service Manual Operating Instructions e Press the MARKER TOGGLE button This operation changes the position of the edit marker with that of the x marker f Position the edit marker at the bottom right of the region m As with step d above set horizontal and vertical positions g Press the Set side button The above steps complete the creation of a trigger region to the left of the peak spectrum See Figure 2 16 Ri MASK LEVEL 40 000 dem CF 16 888 880 Hz SPRH 2 MHz REF 8 8 dBm Figure 2 16 Creation of trigger region Although just this region allows triggering create another trigger region on the right side spectrum for practice 3026 3 GHz Real Time Spectru
130. m Analyzer Service Manual 2 21 Operating Instructions Setting Trigger Conditions 2 22 28 Create a trigger region on the spectrum located on the right side See Figure 2 17 a As with substeps d to g in step 27 create a trigger region The above operation has created the intended trigger mask The blue region is the created trigger mask Ri MASK LEVEL 40 000 dem CF 16 888 880 Hz SPAN 2 MHz REF 8 8 dBm 10 0 20 0 30 0 100 0 150002 12 Gu Sa r Figure 2 17 Created trigger mask blue region Next establish trigger conditions as follows so that triggering occurs if the spectrum appears outside the created trigger mask 29 Press the Mode bottom button 30 Press the Trig Mode side button and select Normal 31 Press the Trig Mask Condition bottom button 32 Press the Freq Mask side button and select Break Break causes a trigger when any part of the spectrum rises above the trigger mask Inside causes a trigger when any part of the spectrum falls below the trigger mask 3026 3 GHz Real Time Spectrum Analyzer Service Manual Operating Instructions Now turn off the output of the modulation wave of the generator to ensure the spectrum remains within the trigger mask See Figure 2 18 33 Turn off the CH2 output of the generator The above steps have completed the arrangements for triggering with a trigger mask Ri MASK LEVEL 40 000 dem CF
131. markers to the peaks which are located on the right and left of the center peak 21 Using the general purpose knob or the 4 button move the x marker to the peak located on the left of the center spectrum The value entry keys may be used to enter the value directly 22 Press the MARKER TOGGLE button located at the top right of the general purpose knob See Figure 2 14 L 7 7 MARKER TOGGLE button SELECT Figure 2 14 MARKER TOGGLE button This operation toggles the active marker to the marker located on the center spectrum The marker will be highlighted 23 Using the general purpose knob or the 4 button move the marker to the peak located on the right of the center spectrum The value entry keys may be used to enter the value directly NOTE A more sophisticated way of moving a marker to a peak in the spectrum is to use the Peak Find feature The frequency and amplitude differences between the two markers are displayed as the DELTA readout Further the frequency difference is indicated as a negative value because the marker value is calculated based on the position of active marker When you toggle the position of active marker the frequency will change to a positive value 3026 3 GHz Real Time Spectrum Analyzer Service Manual Operating Instructions 24 Press the MARKER TOGGLE button again The active marker is toggled and the frequ
132. mp Const Side b Enter 9 1 45 in this order for the password and press OK Select Set DC Serial Number using the Up or Down side key and press Execute d Enter the serial number of the down converter and press OK Em DEC 16 1998 17 13 09 OAD F MAG CF 1588 000 000 Hz SPAN 2 MHz REF 8 80 dBm Active l MARKERI 10 0 2 25 20 0 30 0 J388181 40 0 Instrument serial number oa 8123456 789ABCDEFGHIJKLMNOPA Rstuvwxrz 60 0 78 8 80 0 90 0 100 0 2770 GEE GER 6 ua Sa GG GJ GE ua Figure 5 15 Serial number entry e Press Set DC Const A and enter the m value using the numeric keypad Then press OK f Press Set DC Const B and enter the o value using the numeric keypad Then press OK 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures Signal generator Output 50 Q N N coaxial cable Figure 5 16 Test hookup 3 Install the test hookup and preset the instrument controls a Set the signal generator controls Frequency 1500 MHz Amplitude 10 dBm RF Output On b Hook up the signal generator Connect the output of the signal generator through a 50 Q N N coaxi
133. n A5 W37 from 10 MHz REF INPUT From J620 on A5 e Thermo sensor From J100 on A7 DDC board RF INPUT Figure 6 25 Down converter and A5 Baseband board removal 7 Reinstallation a Do in reverse order step 6 to reinstall the down converter with its chassis Do in reverse order step 5 to reinstall the A5 Baseband board c Doinreverse order step 3 to close the down converter chassis 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 47 Removal and Installation Procedures Procedures for Power Supply Modules 6 48 This part contains the following removal and installation procedures The procedures are presented in the order listed A13 Filter board All DC Power 1 board A12 DC Power 2 board 10 Sub Power board Power supply 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures A13 Filter Board 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the module to be removed in the locator diagram Power supply modules Figure 6 6 page 6 17 c Remove the down converter chassis to access the Filter board Refer to the procedure Down Converter and A5 Baseband Board on page 6 46 2 Orient instrument Set the analyzer so its top side is down on the work surface and its bottom is facing you 3 Remove the A13 Filter board See Figure 6 26 a Disconnect the cables at
134. n Osc gt Ref Osc and select Internal 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 13 Performance Verification Center Frequency Accuracy Test This procedure checks the center frequency error is within the specified range Equipment One frequency counter Item 1 Required One signal generator Item 2 One 50 Q BNC coaxial cable Item 9 One 50 Q N N coaxial cable Item 10 Prerequisites See page 4 8 Frequency counter rear Signal generator B P ES 10 MHz ref output To 10MHZ ref input rear 50 BNC coaxial cable RF input 50 Q N N coaxial cable Figure 4 6 Initial test hookup 1 Install the test hookup and preset the instrument controls a Hook up the frequency counter and the signal generator Connect the 10 MHz reference output of the counter through a 50 Q BNC coaxial cable to 10 MHz reference input of the signal generator See Figure 4 6 b Set the signal generator controls 5 MHz Amplitude 10 dBm RF Output On c Hook up the signal generator Connect the output of the signal generator through 50 Q N N coaxial cable to RF INPUT of the 3026 See Figure 4 6 4 14 3026 3 GHz Real Time Spectrum Anal
135. nality The analyzer automatically executes the internal diagnostics at power on You can also run the internal diagnostics by using the menu selections For more information on the diagnostics refer to Self Tests on page 4 3 Displaying the Power On To display the power on self test results on screen do the following procedure Self Test Results m Press UTILITY Front gt Status Bottom Running the Diagnostics You can run the internal diagnostic routines using the menu selections described in this procedure 1 Press UTILITY Front gt Diag Side DEC 18 1998 17 12 54 CF 1500000 800 Hz SPAN 2 MHz REF 8 8 dBm Active wm data is not acquired MARKERT 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 100 0 2 Select the test item using the Up and Down side keys 3 Press the Execute side key to run the diagnostic 4 Press the CLEAR button twice to exit the diagnostic menu 6 60 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting Use this procedure to determine if an analyzer problem is caused by the Low Voltage Power Supply Connect the analyzer to the correct power source Turn on the power switch there 24 V on J300 pin 1 of the A12 Yes A CAUTION Make sure that the analyzer is turned off before making connections on the A11 and A12 DC power supply boards Then turn on the analyzer again DC Power 2 board
136. nce Verification Self Tests After you turn on the power the analyzer performs the power on self test by using the self test routine Upon its completion it displays the result on the monitor display as shown in Figure 4 1 On the bottom line of this system information the result of the self test is displayed The self tests use internal routines to confirm basic functionality and proper adjustment No test equipment is required to do these test procedures To view the results do the following procedures 1 om Press the UTILITY button on the front panel Press Status of bottom bezel button Press System Info of side bezel button Check the screen message Power on selftest PASS 5416 vastum guaniin decease Figure 4 1 Display of the self test results 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 3 Performance Verification 4 4 The information is displayed on the LCD screen as shown in Figure 4 1 In this example the following information is provided Hardware version 1 03 Firmware version 1 13 Firmware build 11 AUG 1998 10 10 00 OS version 2 0 year 2000 compliant BIOS version BIOS version 2 5 2 Graphic hardware CHIPS 65540 45 VGA 32KB 3026 serial number J300112 Last full calibration date JUN 08 1998 18 27 52 Result of self test PASS This displays the result of the test performed for the two ROMs the A8 Memory A6 DDC and A7 FFT boards If the r
137. nd set the frequency using the keypad 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 23 Performance Verification 4 24 2 m Press the REF LEVEL button and set the reference level using the keypad m Press SETUP gt Frame Period gt 1 6 0 MHz us 160 us and ENTER W Press SETUP gt Block Size gt Set to 200 Set the function generator controls Signal 42 2 1x ee Sine Frequency 125 Hz Amplitude 11 Offset ul ka eeu OV CHloutput On Hook up the function generator Connect the output of the function generator through a 50 2 BNC coaxial cable to the external modulation input of the signal generator See Figure 4 10 Set the signal generator controls Frequency 5 MHz Amplitude 200 mV Modulation type FM Ext DC EM na ee 100 kHz RF output On Modulation On Hook up the signal generator Connect the output of the signal generator through a 50 Q N N coaxial cable to RF INPUT of the 3026 See Figure 4 10 Acquire data a Press the ROLL BLOCK button to select the Block mode b Press the START STOP button to start data acquisition Check the waveform Check that a sine wave for approximately 3 5 cycles is displayed on the screen 4 Modify the 3026 controls a Press SETUP gt FFT gt FFT Pts and select 256 b Press SETUP gt Frame Period gt 4 0 MHz us 40 us and ENT
138. nd terms related to safety appear in the Safety Summary near the beginning of this manual Finding Other Information Other documentation for the 3026 includes m The 3026 Real Time Spectrum Analyzer User Manual contains a tutorial to quickly describe how to operate the analyzer It also includes an in depth discussion on how to more completely use the analyzer features m The 3026 Real Time Spectrum Analyzer Programmer Manual explains how to use the GPIB and LAN interfaces to remotely control the analyzer xvi 3026 3 GHz Real Time Spectrum Analyzer Service Manual Preface Contacting Tektronix Product Support Service Support For other information To write us Website For application oriented questions about a Tektronix measure ment product call toll free in North America 1 800 TEK WIDE 1 800 835 9433 ext 2400 6 00 a m 5 00 p m Pacific time Or contact us by e mail tm app supp tek com For product support outside of North America contact your local Tektronix distributor or sales office Tektronix offers extended warranty and calibration programs as options on many products Contact your local Tektronix distributor or sales office For a listing of worldwide service locations visit our web site In North America 1 800 TEK WIDE 1 800 835 9433 An operator will direct your call Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 USA Tektronix com 3026 3 GHz Real Time Spectr
139. ndard tool 13 Angle tip tweezers Standard tool 14 Standard tool 15 Soldering iron Standard tool 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 11 Removal and Installation Procedures 3026 Orientation In this manual procedures refer to front back top etc of the 3026 Figure 6 1 shows how the sides are referenced oP gt Figure 6 1 3026 orientation 6 12 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Access Procedure When you have identified the module to be removed for service read General Instructions found on page 6 10 Then use the flowchart in Figure 6 2 to determine which procedures to use for removing the module The removal procedures end with installation instructions Locate the module to Procedures for Board Modules be removed in A6 FFT board p 6 40 Figure 6 3 to 6 7 A7 DDC board p 6 40 A8 Memory board p 6 41 CPU board p 6 43 A1 Mother board p 6 44 Down converter p 6 46 A5 Baseband board p 6 46 Procedures for External Modules ls Line cord p 6 21 the module Cabinet p 6 22 in Figure Trim ring p 6 24 6 3 Front panel assembly p 6 25 Front panel connectors p 6 28 Procedures for Power Supply Modules Is A13 Filter board p 6 49 the module A11 DC Power 1 board p 6 50 in Figure A12 DC Power 2 board p 6 50 6 6 A10 Sub Power board p 6 52 Power supply unit p 6 52 Do the procedures Line Cor
140. ng type plug GROUNDING This instrument is safety Class 1 equipment IEC designation All accessible conductive parts are directly connected through the grounding conductor of the power cord to the grounded earthing contact of the power plug WARNING The power input plug must be inserted only in a mating receptacle with a grounding contact where earth ground has been verified by a qualified service person Do not defeat the grounding connection Any interruption of the grounding connection can create an electric shock hazard For electric shock protection the grounding connection must be made before making connection to the instrument s input or output terminals A power cord with the appropriate plug configuration is supplied with each analyzer Table 2 1 gives the color coding of the conductors in the power cord If you require a power cord other than the one supplied refer to Table 2 2 Power cord identification 3026 3 GHz Real Time Spectrum Analyzer Service Manual 2 1 Installation Operating Voltage Table 2 1 Power cord conductor identification Conductor Alternate color Ungrounded Line Brown Black Grounded Neutral Light blue White Grounded Earthing Green Table 2 2 Power cord identification North America Standard 125V Plug configuration Europe 230 V United Kingdom 230 V Australia 230 V North America 230 V Switzerland 230 V This analyzer operates
141. nt setup data appears on the center of the display then power is turned off 42 Turn off power to the signal generator The above steps conclude the tutorials 2 26 3026 3 GHz Real Time Spectrum Analyzer Service Manual Theory of Operation i Theory of Operation Module Overview 3 GHz Down Converter This section describes the electrical operation of the 3026 Real Time Spectrum Analyzer using the major circuit blocks or modules as shown in Figure 9 1 The 3 GHz Down Converter Unit consists of 6 blocks IF converter 15t 2nd 3rd Synthesizer 25 MHz CAL signal generator 10 MHz reference frequency generator Selecting and distributing circuit Bypass relay logic circuit The down converter works in the RF 10 MHz to 3 GHz or Baseband 50 Hz to 10 MHz mode 3 GHz Down Converter in RF Mode 10 MHz to 3 GHz The down converter converts the input RF signals with frequency ranging from 10 MHz to 3 GHz into the 3 IF frequency signal of 21 4 MHz The down conversion frequency is in a 1 MHz step The input RF signal is mixed with LO Local Oscillator signals in a 1 MHz step within the converter and is finally converted into the IF frequency signals The center frequency is 21 4 MHz Each of the LO signals is generated by its synthesizer using the 10 MHz reference clock The RF mode needs to set and adjust reference level Adjusting the conversion sensitivity and setting reference levels are done using the programmable atte
142. nting efficient heat dissipation Dirt also provides an electrical conduction path that could cause an analyzer failure especially under high humidity conditions CAUTION Avoid the use of chemical cleaning agents which might damage the plastics used in this analyzer Use only deionized water when cleaning the menu buttons or front panel buttons Use a 7596 isopropyl alcohol solution as a cleaner and rinse with deionized water Before using any other type of cleaner consult your Tektronix Service Center or representative Inspection Exterior Inspect the outside of the analyzer for damage wear and missing parts using Table 6 2 as a guide Analyzers that appear to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and performance Immediately repair defects that could cause personal injury or lead to further damage to the analyzer 3026 3 GHz Real Time Spectrum Analyzer Service Manual Maintenance Table 6 2 External inspection check list Item Cabinet front panel and cover Front panel knobs Connectors Carrying handle bail cabinet feet Inspect for Cracks scratches deformations damaged hardware or gaskets Missing damaged or loose knobs Broken shells cracked insulation and deformed contacts Dirt in connectors Correct operation Repair action Repair or replace defective module Repair or replace missing or defective knobs Repai
143. nuator and amplifier which are in the 1 converter input stage and in the 3 d converter output stage The CAL signal generating circuit generates highly stable CAL signals of 25 MHz for calibrating conversion gains The 10 MHz reference frequency selection and distribution circuit selects an internal or external 10 MHz reference frequency and outputs the reference signal to the synthesizer the clock generating circuit on the A5 Baseband board and the 10 MHz output connector on the rear panel 3026 3 GHz Real Time Spectrum Analyzer Service Manual 3 1 Theory of Operation 3 2 Baseband Board A5 DDC Board A7 3 GHz Down Converter in Baseband Mode 50Hz to 10MHz In the Baseband mode the input RF signals are sent directly to the A5 Baseband board The 3 GHz down converter is bypassed by the mechanical relay unit The down converter circuit is only used in the RF mode 10 MHz to 3 GHz In the Baseband mode the input frequency ranges from 50 Hz to 10 MHz The A5 Baseband board consists of 6 blocks AC DC GND input switching circuit Programmable ATT Attenuator LPF Low Pass Filter BPF Band Pass Filter 4th mixer Buffer amplifier It performs signal processing including level adjustment band limiting and frequency conversion as required for A D conversion AC DC GND Input Switching Circuit The AC DC GND input coupling switching is only used in the Baseband mode In the RF mode the AC coupling is used Progr
144. oard m J140n the Al Mother board see also Figure 6 24 on page 6 45 m J300 on the A12 DC Power 2 board see also Figure 6 27 on page 6 51 6 52 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures lt To J300 on A12 W360 Figure 6 28 A10 Sub Power board and Power Supply removal 5 Open the down converter chassis Do the procedure Open the down converter chassis step 3 on page 6 34 6 Remove the power supply See Figure 6 29 on the next page a Remove the four screws securing the power supply to the main chassis b Liftthe power supply up and away from the main chassis c Remove the one screw securing the shield cover to the power supply to complete the power supply removal 7 Reinstallation a Do in reverse order step 4 through 6 to reinstall the power supply b Doin reverse order step 3 to close the top chassis 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 53 Removal and Installation Procedures To RF INPUT Figure 6 29 Power supply removal 6 54 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Procedures for Rear Panel Modules Do the Access Procedure on page 6 13 before doing any procedure in this group The procedures are presented in the order listed m AC line filter m Rear panel m Rear BNC cable assembly 30
145. oard m A6 FFT board 6 38 Board Modules m A5 Baseband board m A7 DDC board m CPU board m A8 Memory board m Down converter Procedures for m A10 Sub Power board m Power supply unit 6 48 Power Supply Modules m A11 DC Power 1 board m A13 Filter board m A12 DC Power 2 board Procedures for m Rear panel m BNC cable assembly 6 55 Rear Panel Modules m AC line filter 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Equipment Required Most modules in this analyzer can be removed with a screwdriver handle mounted with a size 2 Phillips tip Use this tool whenever a procedure step instructs you to remove or install a screw unless a different size screwdriver is specified in that step All equipment required to remove and reinstall each module is listed in the first step of its procedure Table 6 5 Tools required for module removal Item Tektronix part No Description number 1 Screwdriver handle Accepts Phillips driver bits 2 1 Phillips tip Phillips driver bit for 1 size screw heads 3 2 Phillips tip Phillips driver bit for 2 size screw heads 4 Flat bladed screwdriver Screwdriver for removing standard headed screws 5 Hex wrench 0 05 inch Standard tool 6 Standard tool 7 Open end wrench inch Standard tool 8 Open end wrench 5 46 inch Standard tool 9 Nut driver 1 2 inch Standard tool 10 Nut driver 1 4 inch Standard tool 11 Standard tool 12 Nut driver 5 mm Sta
146. of the loading side Replace the faulty board 6 62 Are the voltages on J430 of the A13 Filter board OK See Table 6 6 and Figure 6 39 Yes Unplug the cable at CN13 on the U100 Down Converter See Figure 6 43 Are the voltages on J430 of the A13 Filter board OK See Table 6 6 and Figure 6 39 Replace the U100 Replace the A1 Down Converter Mother board Y Are the voltages on J430 of the A13 Filter board OK See Table 6 6 and Figure 6 39 Replace the A5 Baseband board 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting Are the voltages on W38 on the A5 Baseband Yes Are the fans Yes board OK See Table 6 6 and Figure 6 39 Unplug the cable at CN13 on the U100 Down Converter See Figure 6 43 Are the voltages on W38 on the A5 Baseband board OK See Table 6 6 and Figure 6 39 Replace the U100 Down Converter Y Replace the A11 DC Power 1 board Y Are the voltages on W38 on the A5 Baseband N Yes board OK See Table 6 6 and Figure 6 39 Locate the short circuited position of the loading side Replace the faulty board 3026 3 GHz Real Time Spectrum Analyzer Service Manual The power supply is OK Reconnect the fan power cable at J360 the A12 DC Power 2 board See Figure 6 38 working Are the f
147. off dust with dry low pressure deionized air approximately 9 psi 2 Remove any remaining dust with a lint free cloth dampened in isopropyl alcohol 75 solution and rinse with warm deionized water A cotton tipped applicator is useful for cleaning in narrow spaces and on circuit boards STOP If after doing steps 1 and 2 a module is clean upon inspection skip the remaining steps 3 Ifsteps 1 and 2 do not remove all the dust or dirt the analyzer may be spray washed using a solution of 75 isopropyl alcohol by doing steps 4 through 8 4 Gain access to the parts to be cleaned by removing easily accessible shields and panels see Removal and Installation Procedures 5 Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the majority of the alcohol to evaporate 6 Use hot 120 F to 140 F deionized water to thoroughly rinse them 7 Dry all parts with low pressure deionized air 8 Dry all components and assemblies in an oven or drying compartment using low temperature 125 F to 150 F circulating air Lubrication There is no periodic lubrication required for this analyzer 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 7 Maintenance 6 8 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Preparation A A List of Modules This subsection contains procedures for removal and installation of all mechani cal and electrica
148. or levels voltage discharged from a 100 pF capacitor through resistance of 100 ohms 1 100 to 500 V 2 200 to 500 V 3 250 V 4 500 V 5 400 to 600 V 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 600 to 800 V 7 400 to 1000 V est 8 900 V 9 1200 V Maintenance Inspection and Cleaning General Care Inspection and Cleaning Procedures AN 6 4 Inspection and Cleaning describes how to inspect for dirt and damage It also describes how to clean the exterior and interior of the analyzer Inspection and cleaning are done as preventive maintenance Preventive maintenance when done regularly may prevent analyzer malfunction and enhance its reliability Preventive maintenance consists of visually inspecting and cleaning the analyzer and using general care when operating it How often to do maintenance depends on the severity of the environment in which the analyzer is used A proper time to perform preventive maintenance is just before analyzer adjustment The cabinet helps keep dust out of the analyzer and should normally be in place when operating the analyzer The analyzer s front cover protects the front panel and display from dust and damage Install it when storing or transporting the analyzer Inspect and clean the analyzer as often as operating conditions require The collection of dirt on components inside can cause them to overheat and break down Dirt acts as an insulating blanket preve
149. pad b Set the signal generator controls Frequency 1000 MHz Amplitude 10 dBm RF Output On c Hook up the generator Connect the generator output through a 50 Q coaxial cable to the 3026 RF INPUT See Figure 4 4 2 Acquire data a Press the ROLL BLOCK button to select the Roll mode b Press the START STOP button to start data acquisition 3 Check the waveform display Check that the spectrum is displayed at the center approximately 4 Modify the 3026 controls Press SETUP gt External Gain Osc gt Ref Osc and select External 5 Check the waveform display Check that the spectrum shifts from the center 6 Modify the test hookup Connect the 10 MHz reference output of the generator through a 50 Q BNC coaxial cable to 10 MHz REF INPUT of the 3026 See Figure 4 5 3026 rear Signal generator rear 10 MHz ref output 10 MHz REF INPUT 50 Q BNC coaxial cable H Figure 4 5 Modified test hookup 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification 7 Check the waveform display Check that the spectrum returns to the original center position approximately 8 Disconnect the hookup a Disconnect the cables at RF INPUT and 10 MHz REF INPUT b Press SETUP gt External Gai
150. r Enabled ECP Mode Use DNA 3 Memory Hole At 15Mb Addr Disabled Cache Timing Control Fast DRAM Timing Control Fast Fast DRAM Enabled Burst Write Disabled CPU Write Back Cache Disabled Set Turbo pin function Turbo ESC Quit Thee Select Item Disabled Fi Help PU PD 7 Modify FS 014 Values Shift F2 Calor F6 Load BIOS Defaults F Load Setup Defaults Set Mouse Lock LAN Card Boot ROM Disabled 6 88 3026 3 GHz Real Time Spectrum Analyzer Service Manual Accessing the BIOS Backing Up the System Files The solid state disk drive C in the analyzer contains its system files You can back up the calibration files which are specific to each 3026 Copy these text files to floppy disks with the following procedures if necessary Table 6 8 3026 system files Contents Down converter calibration constants RF gain calibration constants Baseband gain calibration constants RF settings IF flatness calibration constants SG flatness calibration constants A8 board FPGA logic object IP address 3026 operating system VxWorks 3026 boot file Category File Calibration CADC TBL CARFGAIN CAL One floppy disk is CABSGAIN CAL need io saye althe copper C IFFLAT CAL CASFLATOFF TXT Firmware C A8 RBF CAMYNET CFG Two floppy disks C KERNEL SYS fimaretieg C3BOOTROM SYS C 3026 0BJ To copy those files follow these steps 3026 firmware 1 Connect an A
151. r or replace defective modules Clear or wash out dirt Repair or replace defective module Accessories Missing items or parts of items bent pins broken or frayed cables and damaged connec tors Repair or replace damaged or missing items frayed cables and defective modules Cleaning Procedure Exterior To clean the analyzer exterior do the following steps 1 Remove loose dust on the outside of the analyzer with a lint free cloth 2 Remove remaining dirt with a lint free cloth dampened in a general purpose detergent and water solution Do not use abrasive cleaners 3 Clean the light filter protecting the monitor screen with a lint free cloth dampened with either isopropyl alcohol or preferably a gentle general purpose detergent and water solution CAUTION To prevent getting moisture inside the analyzer during external cleaning use only enough liquid to dampen the cloth or applicator 3026 3 GHz Real Time Spectrum Analyzer Service Manual Maintenance Inspection Interior To access the inside of the analyzer for inspection and cleaning refer to the Removal and Installation Procedures in this section Inspect the internal portions of the analyzer for damage and wear using Table 6 3 as a guide Defects found should be repaired immediately CAUTION To prevent damage from electrical arcing ensure that circuit boards and components are dry before applying power to the analyzer
152. r practices that could result in damage to this product or other property Terms on the Product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product Symbols on the Product The following symbols may appear on the product A AN m WARNING Protective Ground CAUTION Double High Voltage Earth Terminal Refer to Manual Insulated 3026 3 GHz Real Time Spectrum Analyzer Service Manual a ENSEM Service Safety Summary Only qualified personnel should perform service procedures Read this Service Safety Summary and the General Safety Summary before performing any service procedures Do Not Service Alone Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present Disconnect Power To avoid electric shock disconnect the mains power by means of the power cord or if provided the power switch Use Care When Servicing With Power On Dangerous voltages or currents may exist in this product Disconnect power remove battery if applicable and disconnect test leads before removing protective panels soldering or replacing components To avoid electric shock do not touch exposed connections 3026 3 GHz Real Time Spectrum Analyzer
153. re 6 10 Rear cover and cabinet removal 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 23 Removal and Installation Procedures Trim Ring and Menu 1 Assemble equipment and locate modules to be removed No tools are needed Buttons Locate the modules to be removed in the locator diagram External modules Figure 6 3 page 6 14 2 Orient instrument Set the 3026 so its bottom is down on the work surface and its front is facing you 3 Remove front panel knob Do the procedure Front Panel Knob on page 6 20 4 Remove trim ring Grasp the trim ring by the top edge and pry it up and lift it forward to snap it off of the trim ring If servicing the menu buttons lift them out of the trim ring When reinstalling reinsert the menu buttons align the trim ring to the chassis and press it back on points on the menu buttons installed in the trim ring Also do not touch the contacts on the flex circuit exposed when you remove the trim ring CAUTION To prevent contaminating 3026 parts do not touch the carbon contact 5 Reinstallation Do in reverse order steps 3 and 4 to reinstall the menu buttons and trim ring EMI Gaskets 1 Assemble equipment and locate modules to be removed a Have handy a pair of needle nose pliers Item 14 b Locate the modules to be removed in the locator diagram External modules Figure 6 3 page 6 14 c Do the procedure Trim Ring and Menu Buttons that precedes this procedure to remove
154. ress the FREQ button and set the frequency using the keypad vx een ens 2 MHz m Press the REF LEVEL button and set the reference level using the keypad Ret auper uut 0 dBm 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification m Press SETUP gt Frame Period gt 1 6 0 MHz us 160 us and ENTER m Press SETUP gt Block Size gt Set to 200 m Press TRIG gt Mode gt Trig Mode and select Normal b Set the signal generator controls Frequency 7 MHz Amplitude 10 dBm RF output On c Hook up the signal generator Connect the output of the signal generator through a 50 Q N N coaxial cable to RF INPUT of the 3026 See Figure 4 11 2 Acquire data a Press ROLL BLOCK button to select the Roll mode b Press the START STOP button to start data acquisition 3 Create a trigger mask Make a 4 X 2 division mask See Figure 4 12 Figure 4 12 Creating a trigger mask a Press TRIG gt Edit Freq Mask gt Display and select On b Press the Clear Mask side button Move the edit marker the red arrow marker to the position A using the general purpose knob Press the Dir side button and select Hori or Vert for the direction of movement d Press the MARKER TOGGLE button to select another edit marker 3026 3 GHz Real Time Spectrum Analyzer Service Manu
155. rformance Verification Frequency 100 MHz Level 10 dBm Unplug the coaxial cable at J6 the third IF output connector of the U100 Down Converter See Figure 6 43 Using another spectrum analyzer measure the connector output Is the spectrum frequency 21 4 MHz Replace the U100 Down Converter Yes Reconnect the coaxial cable to J6 on the U100 Down Converter Probing pin 8 of U514 on the A5 Baseband board see Figure 6 39 measure the frequency using another spectrum analyzer and a FET probe Refer to Removal and Installation for accessing the A5 Baseband board spectrum frequency Probing pin 6 of U300 on the A5 Baseband board see Figure 6 39 measure the frequency using another spectrum analyzer and a FET probe Is the following stable clock being output Frequency 25 60 MHz Level 2 6 dBm Replace the A7 DDC board or A6 FFT board 3026 3 GHz Real Time Spectrum Analyzer Service Manual Replace the A5 Baseband board 6 67 Troubleshooting Use this procedure when an analyzer displays nothing on the screen Connect the analyzer to the correct power source Turn on the power switch Can you hear audible beep approx 10 s after power on No Connect the external VGA monitor to the VGA output on the 3026 rear panel ls the monitor display OK No After the beep can you Replace the CPU board hear
156. rum Analyzer Service Manual 2 7 Operating Instructions Setup 1 First make preparations for outputting AM modulation signals from the signal generator a Connect the CH2 output of the signal generator to AM IN on the rear panel of the signal generator with a BNC cable b Setup the signal generator as follows CHI output Function Frequency 16 MHz Amplitude 0 1 V Modulation AM CH2 output Function Kassa SINE Frequency 1 MHz Amplitude 1 0 V 2 Use the other BNC cable and BNC N conversion connector to connect the CHI output of the signal generator with the RF INPUT connector on the 3026 front panel See Figure 2 2 POWER NOISE LEVEL OMENU 7 8 9 p INC er OSETUP C2 OMARKER O SAVE OUTILITY TRIG CO Cog ss ORESTORE 0 k m ENTER EXT TRIG RF IN TIL 50 Q MAX 30 dBm a Figure 2 2 RF INPUT 2 8 RF INPUT connector connector 3026 3 GHz Real Time Spectrum Analyzer Service Manual Operating Instructions Turning On the Power 1 Press the ON STBY button on the front panel of the 3026 When you press the ON STBY button the system comes up and performs Power on self test When the test is complete system information app
157. s Amplitude 5 dBm 6 Check the A D converter overload a Check that the message OVERLOAD is displayed on the 3026 screen b Turn off the generator output and check the message disappears 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 19 Performance Verification Span and Center Frequency Test This procedure checks the span and the center frequency errors are within the specified range Equipment One signal generator Item 2 Required id One 50 Q N N coaxial cable Item 10 Prerequisites See page 4 8 Signal generator Output 50 Q N N coaxial cable Figure 4 9 Initial test hookup 1 Install the test hookup and preset the instrument controls a Setthe 3026 controls m Press the START STOP button to stop data acquisition m Press the ROLL BLOCK button to select the Roll mode m Press DISPLAY A Spectrum button m Press SETUP gt Range gt 50 10MHz m Press SETUP gt FFT gt FFT Pts and select 1024 m Press SETUP gt FFT gt Window Blackman Harris m Pressthe REF LEVEL button and set the reference level using the keypad 4 20 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification Set the signal generator controls Amplitude RF output Hook up th
158. s 2 0 dB or smaller 5 Modify the signal generator settings Frequency 16 MHz 6 Check the aliasing Check that the maximum value of the frequency components between 9 MHz and 10 MHz is 60 dBm or lower 7 Modify the signal generator settings Frequency 24 MHz 8 Check the aliasing Check that the maximum value of the frequency components between 1 MHz and 2 MHz is 60 dBm or lower 9 Disconnect the hookup Disconnect the cable at RF INPUT 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 17 Performance Verification Attenuator Test 4 18 This procedure checks the attenuator error is within the specified range Equipment One signal generator Item 2 Required i One 50 Q N N coaxial cable Item 10 Prerequisites See page 4 8 Signal generator 50 Q N N coaxial cable Figure 4 8 Initial test hookup 1 Install the test hookup and preset the instrument controls a Set the 3026 controls W Press the START STOP button to stop data acquisition m Press DISPLAY A Spectrum button m Press SETUP gt Range gt 50 10MHz m Press SETUP gt FFT gt FFT Pts and select 1024 m Press SETUP gt FFT gt Window Blackman Harris m Press the FREQ button and set the frequency using the keypad
159. s List Fig amp Index Number 6 1 2 10 14 Tektronix Part Serial No Number 671 4714 XX 211 0871 XX 671 4715 XX 211 0871 XX 671 4716 XX 211 0871 XX 119 6022 XX 343 0549 XX 407 4659 XX 129 1051 XX 211 0871 XX Effective Serial No Discont d Qty Name amp Description 1 1 CIRCUIT BOARD ASSY A6 FFT 389 A707 01 WIRED SCREW MACHINE M3X6MM L PNH STL MFZN C CROSS REC W FLAT 7MM OD amp LOCK WASHER CIRCUIT BOARD ASSY ICS4100 INTERCONNECT SWITCH SCREW MACHINE M3X6MM L PNH STL MFZN C CROSS REC W FLAT 7MM OD amp LOCK WASHER CIRCUIT BOARD ASSY A8 MEMORY 389 A709 XX SCREW MACHINE M3X6MM L PNH STL MFZN C CROSS REC W FLAT 7MM OD amp LOCK WASHER CONTROLLER ISA HALF SIZE 486CPU 1 00MHZ PCA6145B STRAP TIEDOWN 1 6 19MM DIA 66NYLON BRACKET CPU BOARD SPACER POST 4 8MM L 4 40INT 4 40EXT STL 4 8MM HEX W WASHER SCREW MACHINE M3X6MM L PNH STL MFZN C CROSS REC W FLAT 7MM OD amp LOCK WASHER Mfr Code 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 Mfr Part Number 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List Attached to the CPU board Figure 10 6 Board modules 2 10 15 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List Replaceable Parts List Fig amp Index Number 7 1 2 10 16 Tektronix Part Serial No Number 174 4155 XX 174
160. s only when the product is out of service Conductive pollution or dry nonconductive pollution that becomes conductive due to condensation These are sheltered locations where neither temperature nor humidity is controlled The area is protected from direct sunshine rain or direct wind Pollution that generates persistent conductivity through conductive dust rain or snow Typical outdoor locations Safety Certification Compliance Equipment Type Test and measuring Safety Class Class 1 as defined in IEC 1010 1 Annex H grounded product Overvoltage Category Overvoltage Category II as defined in IEC 1010 1 Annex J Pollution Degree Pollution Degree 2 as defined in IEC 1010 1 Note Rated for indoor use only 1 14 3026 3 GHz Real Time Spectrum Analyzer Service Manual Operating Information Installation Supplying Operating Power AN A Power Cord Information NOTE Read all information and heed all warnings in this subsection before connecting the analyzer to a power source WARNING AC POWER SOURCE AND CONNECTION The analyzer operates from a single phase power source It has a three wire power cord and two pole three terminal grounding type plug The voltage to ground earth from either pole of the power source must not exceed the maximum rated operating voltage 250 volts Before making connection to the power source be sure the analyzer has a suitable two pole three terminal groundi
161. sation 5 Spectrum analyzer 2 Frequency range DC to 3 GHz Sony Tektronix Creating flatness correction 3066 or 3086 data for the HP8648 signal generator 6 PC Windows 95 or 98 GPIB board National Instruments Software based measurement LabVIEW version 5 0 or later LabVIEW and GPIB board recommended 7 BNC cable 50 Q 36 in male to male BNC Tektronix part number Signal interconnection connectors 012 1341 00 8 N Ncable 50 Q 36 in male to male N Signal interconnection connectors 9 GPIB cable 2m double shielded Tektronix part number Software based adjustments two required 012 0991 00 10 Extension cable 30 cm Tektronix part number Signal interconnection 174 4264 XX 11 Terminator Impedance 50 O connectors Tektronix part number Clock frequency adjustment female BNC input male BNC output 011 0049 01 12 N adapter Female to female N connectors RF flatness compensation 13 Adjustment tool Manual adjustments 14 SG flatness LabVIEW version 5 0 or later Creating flatness correction measurement program recommended data for the HP8648 signal generator 15 SG flatness floppy disk Created or updated with the proce 3 5 inch 720 K or 1 44 M Storing flatness correction dures described on page 5 11 byte DOS compatible floppy data for the HP8648 signal disk generator 1 Use this instrument only Some adjustment procedures specify that the 3026 controls this instrument over the GPIB 2 3026 3 GHz Real Time Spectrum Analyzer Service Manua
162. splay Area 2 12 SUMMARY This section describes how to divide the display area into two and observe the data in different display modes To divide the display area and change the display mode use the buttons located in the DISPLAY area See Figure 2 7 DISPLAY m A A Bee Ej OMENU er Figure 2 7 Buttons in DISPLAY area 4 Press the E button located in the DISPLAY area The display area is divided into two The upper section displays the spectrogram and the lower section displays the spectrum as shown in Figure 2 8 Be i DH Active 168 8 23300 639 239 89 ma A 090 029290 88 Figure 2 8 Spectrogram display upper and spectrum display lower 3026 3 GHz Real Time Spectrum Analyzer Service Manual Operating Instructions Changing the Display Next change the upper section into the waterfall display Mode 5 Press the SELECT button located at the bottom right of the general purpose knob See Figure 2 9 MARKER TOGGLE SELECT IT SELECT button Figure 2 9 SELECT button The color of upper scale of the spectrogram display changes from gray to blue This indicates that the active area that for which setting changes and operations are valid has been switched to the upper section NOTE If the display area has been split check which area is active before you change the settings 3
163. stall the hard disk drive and solid state disk From J06 on A1 Figure 6 19 Hard disk drive and solid state disk removal 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 35 Removal and Installation Procedures Display Module 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tip Items 1 and 3 b Locate the module to be removed in the locator diagram Internal modules Figure 6 4 page 6 15 2 Orient instrument Set the analyzer so its bottom is down on the work surface and its front is facing you 3 Remove the display module See Figure 6 20 a Remove the three screws securing the LCD bracket to the front chassis b While lifting up the display module with its bracket disconnect the cables at J19 J20 and J24 c After taking out the display module with the bracket remove the four screws securing the LCD to the bracket 4 Reinstallation Do in reverse order step 3 to reinstall the display module 6 36 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures From J09 on PL A1 Mother board J24 29 Bracket N From J10 and J11 amp on A1 Mother board Pd Pd Figure 6 20 Display module removal 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 37 Removal and Installation Procedures Procedures for Board Modules 6 38 Do the Access Procedure on page
164. t 10 2 3026 3 GHz Real Time Spectrum Analyzer Service Manual Mechanical Parts List Manufacturers Cross Index Mfr Code Manufacturer 53109 FELLER TK0191 SONY TEKTRONIX TK0435 LEWIS SCREW CO TK1163 POLYCAST INC TK1287 ENOCH MFG CO TK1908 PLASTIC MOLDED PRODUCTS TK1918 SHIN ETSU POLYMER AMERICA INC TK2058 TDK CORPORATION OF AMERICA TK2432 UNION ELECTRIC TK2548 XEROX BUSINESS SERVICES DIV OF XEROX CORPORATION 0JR05 TRIQUEST CORP 0 01 STAUFFER SUPPLY 00779 AMP INC 07416 NELSON NAME PLATE CO 2W733 BELDEN CORPORATION 24931 SPECIALTY CONNECTOR CO INC 6D224 HARBOR TRI TEC A BERG ELECTRONICS COMPANY 61058 MATSUSHITA ELECTRIC CORP OF AMERICA PANASONIC INDUSTRIAL CO DIV 61857 SAN 0 INDUSTRIAL CORP 61935 SCHURTER INC 64537 KDI TRIANGLE ELECTRONICS 73743 FISCHER SPECIAL MFG CO 75915 LITTELFUSE TRACOR INC SUB OF TRACOR INC 78189 ILLINOIS TOOL WORKS INC SHAKEPROOF DIV 80009 TEKTRONIX INC 86928 SEASTROM MFG CO INC 98291 SEALECTRO CORP BICC ELECTRONICS Address 72 VERONICA AVE UNIT 4 PO BOX 5209 TOKYO INTERNATIONAL 4300 S RACINE AVE 9898 SW TIGARD ST 14242 SE 82ND DR PO BOX 98 4336 SO ADAMS 1181 NORTH 4TH ST 1600 FEEHANVILLE DRIVE 15 F 1 FU SHING N ROAD 14181 SW MILLIKAN WAY 3000 LEWIS AND CLARK HWY 810 SE SHERMAN 2800 FULLING MILL PO BOX 3608 3191 CASITAS 2200 US HIGHWAY 27 SOUTH PO BOX 1980 2100 EARLYWOOD DR PO BOX 547 14500 SOUTH BROADWAY TWO PANAS
165. t F2 Change Color Change Set Disable Password NOTE Do not set a password If you set a password the 3026 does not start up at power on 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 87 Accessing the BIOS ROM ISA BIOS 2C4L6AKK CMOS SETUP UTILITY POWER MANAGENENT SETUP Power Managenent Disabled IRQ3 Activity Primary Doze Timer 32 sec IRO4 Activity Primary IRQS Activity Prinary IRQ Activity Primary Sleep Tiner 2 nin IRQB Activity Secondary Sleep Mode Sleep IRQ40 Activity Primary HDD Pauer Management Disabled IRQ11 Activity gt Primary VGA Activity Wakeup Disabled IRQ12 Activity Primary 19 Activity Disabled ESC Quit Thee Select Item Fi Help PU PD Modify FS Old Values Shift f2 Color F6 Load BIOS Defaults F Load Setup Defaults ROM ISA BIOS 2CALGAKIO CMOS SETUP UTILITY CHIPSET FEATURES SETUP Auto Configuration Enabled Onhoard local bus IDE Enabled Decoupled Refresh Enabled IDE Primary Master PIO Auto Relocate 256k 384k Disabled IDE Primary Slave PIO Auto Video BIOS Cacheable Enabled Onboard FDD Controller Enabled System BIOS Cacheable Enabled Onboard Serial Port 1 COML 3FE Onboard Serial Port 2 CONZ 2ZFB External Cache Schene Ur Through Onboard Parallel Port STR TRQ Combine Alter amp Tag Bits Enabled Onboard Parallel Mode CHRDY for ISA Maste
166. ta level data are compared with the acquisition data I and Q imaginary data by the magnitude comparator logic FPGA on the A8 Memory board 3026 3 GHz Real Time Spectrum Analyzer Service Manual Theory of Operation Trigger Logic The Trigger Logic consists of 3 blocks Multiplier Adder Magnitude comparator The momentary power level calculated in real time based on the I Q data is compared with the trigger conditions to generate trigger signals then output to the A8 Memory board Local Controller FPGA The local controller sets up and controls all the signal processing hardware ranging from the down converter to the Memory board and sends the upper bits of addresses to the acquisition memory to control writing frame data Clock Generation The clock generation distribution circuit generates and distributes synchronous system clock used by the FFT and Memory boards The clock generation circuit consists of a digital control VCXO It generates sampling clocks for the A D converter locked with the 10 MHz reference frequency supplied from the 3 GHz Down Converter as well as LO signals for the 4th mixer External Trigger Circuit FPGA The external triggering circuit detects a rising edge in external trigger input signals and sends an interrupt to the 486 CPU board 486 CPU Board The 486 CPU board is installed with an Intel 486 100 MHz processor and real time OS It carries out various acquisition data processing and outpu
167. test hookup 4 11 Figure 4 5 Modified test hookup 4 12 Figure 4 6 Initial test hookup 4 14 Figure 4 7 Initial test hookup 4 16 Figure 4 8 Initial test hookup 4 18 Figure 4 9 Initial test hookup 4 20 Figure 4 10 Initial test hookup 4 23 Figure 4 11 Initial test hookup 4 26 Figure 4 12 Creating a trigger mask 4 27 Figure 4 13 Initial test hookup 4 30 3026 3 GHz Real Time Spectrum Analyzer Service Manual Table of Contents Figure 4 14 Initial test hookup 4 32 Figure 4 15 Initial hookup for setting up the power meter and SENSOR coo en X NN OPEP CH Y ea eye 4 34 Figure 4 16 Hookup for calibrating the power sensor 4 35 Figure 4 17 Hookup for setting the signal generator 4 36 Figure 4 18 Hookup for checking the reference level accuracy 4 36 Figure 4 19 Initial test hookup 4 38 Figure 4 20 Running the RF flatness check program on PC 4 39 Figure 5 1 Accessing the A5 Baseband board 5 5 Figure 5 2 Adjustment and connector location 5 6 Figure 5 3 Test hookup
168. the hard disk drive n TEM dien accessing intermittently the solid state disk SSD for 1 min or more Is the Check the connection of the Is the LCD backlight LCD inverter wire W21 W22 LCD backlight on and W23 See Figure 6 44 on No Replace the LCD module Do any random patterns or characters display No Replace the LCD module Check the connection of the LCD interface wire W19 and W20 See Figure 6 44 Figure 6 35 Troubleshooting procedure 4 LCD display modules 6 68 3026 3 GHz Real Time Spectrum Analyzer Service Manual Troubleshooting Use this procedure when an analyzer displays nothing on the screen Connect the 3026 to the correct power source Turn on the power switch At power on does the screen display a color pattern initially and go to black Turn the 3026 off and on again the screen display Turn off the 3026 Check all characters normally and the cables coming out of the the hard disk drive CPU board Then turn on the access LED analyzer again i No Replace the solid state disk SSD or hard disk drive Turn the 3026 off and on again Does the 3026 display the initial screen normally No Replace the CPU board The 3026 is OK Figure 6 36 Troubleshooting procedure 5 CPU modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 69 Troubleshooting
169. the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE
170. the test hookup and preset the instrument controls a Set the 3026 controls m Press the START STOP button to stop data acquisition m Press DISPLAY A Spectrum button m Press SETUP gt Range gt 50 10MHz m Press SETUP gt FFT gt FFT Pts and select 1024 m Press SETUP gt FFT gt Window Blackman Harris m Press the FREQ button and set the frequency using the keypad 4 16 3026 3 GHz Real Time Spectrum Analyzer Service Manual Performance Verification m Press the REF LEVEL button and set the reference level using the keypad b Set the signal generator controls Frequency 1 MHz Amplitude 10 dBm RF output On c Hook up the generator Connect the output of the generator through a 50 N N coaxial cable to RF INPUT of the 3026 See Figure 4 7 2 Acquire data a Press ROLL BLOCK button to select the Roll mode b Press the START STOP button to start data acquisition 3 Measure peak Change the frequency of the signal generator from 1 MHz to 9 MHz in 1 MHz step and read the peak value with the marker a Setthe frequency of the signal generator to 1 MHz initially b Press MARKER gt Peak Find Highest Peak to place the marker on the peak signal c Read the peak level and note it d Repeata to c for the frequency 1 MHz to 9 MHz in 1 MHz step 4 Check the flatness Check that the difference between the maximum and minimum levels of each frequency i
171. tic discharge ESD 1 Minimize handling of static sensitive modules 2 Transport and store static sensitive modules in their static protected containers or on a metal rail Label any package that contains static sensitive modules 3 Discharge the static voltage from your body by wearing a grounded antistatic wrist strap while handling these modules Do service of static sensitive modules only at a static free work station 4 Nothing capable of generating or holding a static charge should be allowed on the work station surface 5 Handle circuit boards by the edges when possible 6 Do not slide the modules over any surface 7 Avoid handling modules in areas that have a floor or work surface covering capable of generating a static charge 3026 3 GHz Real Time Spectrum Analyzer Service Manual Maintenance Susceptibility to ESD Table 6 1 lists the relative susceptibility of various classes of semiconductors Static voltages of 1 KV to 30 kV are common in unprotected environments Table 6 1 Relative susceptibility to static discharge damage Semiconductor classes Relative susceptibility levels 1 MOS or CMOS microcircuits or discrete circuits or linear 1 microcircuits with MOS inputs most sensitive ECL Schottky signal diodes Schottky TTL High frequency bipolar transistors JFET Linear microcircuits Low power Schottky TTL oj N a AJ oo ro TTL least sensitive 9 1 Voltage equivalent f
172. ting the calibration If the calibration is run while signal acquisition is in progress the acquisition stops and the calibration is run next 1 Press the START STOP button to set for the STOP mode When in the STOP mode the LED over the left of the START STOP button goes off 2 Press the UTILITY button on the front panel 3 Press the Diag Cal bottom bezel button 4 Press the Execute RF Cal side bezel button The calibration runs It takes several seconds to complete After the RF calibration CAL NEED changes to CAL VALID 3026 3 GHz Real Time Spectrum Analyzer Service Manual k 7 Performance Tests This section contains a collection of procedures for checking that the 3026 performs as warranted Table 4 1 Performance tests Titles Refer to specification 10 MHz reference output test 10 MHz reference input test Center frequency accuracy test Flatness and aliasing test 4 16 1 4 Attenuator test 4 18 Span and center frequency test Frame update interval test 4 23 1 5 Internal trigger test 4 26 1 5 External trigger test 4 30 1 5 C N test 4 32 1 4 RF reference level test 4 34 1 4 RF flatness test 4 38 1 4 STOP These procedures extend the confidence level provided by the basic procedures described on page 4 3 The basic procedures should be done first then these procedures performed if desired 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 7 Performance Verification
173. to RF INPUT of the 3026 See Figure 5 4 c Connect the 3026 and the generator with a GPIB cable d Power on the 3026 and the generator e Setthe generator GPIB address to 1 and the configuration to Listener 3026 3 GHz Real Time Spectrum Analyzer Service Manual Adjustment Procedures 2 Enable the calibration a Press UTILITY Front gt Diag Cal Bottom gt Cal amp Const Side b Enter 9 14 5 for the password and press OK 3 Load the adjustment file a Insert the floppy disk containing the flatness correction data sflatoff txt for the HP8648 signal generator into the 3026 disk drive b Press RESTORE Front gt Signal Generator Offset Bottom File Side c Press Restore From Floppy side key DEC 17 1998 14 43 24 Active 90 04 TA ee Figure 5 5 Loading the adjustment file from the floppy disk d Select the file sflatoff txt using the general purpose knob e Press Restore side key The HDD and FDD LEDs on the front panel blink for about 10 seconds f Ejectthe floppy disk 3026 3 GHz Real Time Spectrum Analyzer Service Manual 5 9 Adjustment Procedures 4 Letthe instruments warm up Allow a 20 minute warm up period before you go to the next step 5 Execute the calibration a Onthe Calibration amp Set Constant menu select Exec Full Calibration using the Up and Down side keys EU BE DEC 16 1998 17 11 46 IF MRG CF 1588 888 000 Hz SPAN 2 MHz REF 8 8 dBm Active
174. to help you isolate faulty modules in the analyzer If a module needs to be replaced follow the Removal and Installation Procedures located in this section Troubleshooting Procedure This subsection consists of the following flowchart Figure 6 32 Troubleshooting Procedure 1 Power supply modules Figure 6 33 Troubleshooting Procedure 2 Signal processing modules Figure 6 34 Troubleshooting Procedure 3 Clock modules Figure 6 35 Troubleshooting Procedure 4 LCD display modules Figure 6 36 Troubleshooting Procedure 5 CPU modules Figure 6 37 Troubleshooting Procedure 6 Front panel modules If a fault is detected first check the power unit according to Troubleshooting Procedure 1 Power supply modules to make sure that the power has no trouble Then locate the faulty board according to the troubleshooting tree for each fault or the symptom cause table Note that because of the analyzer s operation principles it is frequently difficult to locate the faulty module only from the symptom or the result of the self test Fault isolation may mostly be disabled particularly for the FFT A6 DDC A7 and Memory A8 boards When repairing the analyzer you may need to replace these boards sequentially while rechecking operation of the analyzer 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 59 Troubleshooting Diagnostics The analyzer has internal diagnostics that verify circuit functio
175. to the shaft and tighten the setscrew using the Ke inch hex wrench Figure 6 8 Front panel knob removal 6 20 3026 3 GHz Real Time Spectrum Analyzer Service Manual Removal and Installation Procedures Line Cord 1 Assemble equipment and locate modules to be removed No tools are needed Locate the module to be removed in the locator diagram External modules Figure 6 3 page 6 14 2 Orient instrument Set the 3026 so its bottom is down on the work surface and its back is facing you 3 Remove line cord Find the line cord on the rear cover See Figure 6 9 Now remove the line cord retaining clamp by first unplugging the line cord from the line cord receptacle 1 Next grasp both the line cord and the retaining clamp and rotate it 90 degrees counter clockwise 2 Pull the line cord and clamp away to complete the removal 3 4 Reinstallation Do in reverse order step 3 to reinstall the line cord 2 Rotate Figure 6 9 Line cord removal 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 21 Removal and Installation Procedures Rear Cover and Cabinet 6 22 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 2 Phillips tips Items 1 and 3 b Locate the modules to be removed in the locator diagram External modules Figure 6 3 page 6 14 Orient instrument Set the 3026 so its bottom
176. ts the data to and receives data from the local controller The 486 CPU board controls entire system including the user interface monitor display and these external interfaces GPIB interface LAN network interface Parallel port interface LCD interface This board also has a 2 5 inch 2 1 G byte hard disk drive and a 3 5 inch floppy disk drive as peripheral devices It is equipped with keyboard mouse and Centronics parallel connectors 3026 3 GHz Real Time Spectrum Analyzer Service Manual 3 5 Theory of Operation Mother Board A1 Power Supply Unit Sub Power Board A10 DC Power 1 Board A11 3 6 The Mother board consists of the ISA bus and local bus connectors for connect ing these boards CPU board ISA bus A6 FFT board ISA bus and local bus A7 DDC board ISA bus and local bus A8 Memory board ISA bus and local bus The Mother board also has Power On Off Control Logic and some stabilized power supply circuits Power On Off Control Logic The Mother board controls the interfaces between the boards and supplies the power The power supply circuit on the Mother board use a 24 V input to generate 20 V and 15 V output power using to be supplied to the A5 Baseband board The Power Supply Unit supplies 24 V 6 5 A DC to these modules Al Mother board A10 Sub Power board A11 DC Power 1 board A12 DC Power 2 board DC fan 424 V DC 3 GHz Down Converter unit The Sub Power board always supplies a
177. turn to the initial SETUP screen 6 Select SAVE amp EXIT SETUP and press the Enter key 7 Atthe prompt SAVE to CMOS and EXIT Y N press y yes or n no 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 85 Accessing the BIOS Factory Default Settings 6 86 The following figures show the factory default settings of the BIOS If you have changed any BIOS settings reset them to the initial settings below Then select SAVE amp EXIT to exit the BIOS menu ROM ISA BIOS ZC4LGAKK STANDARD CMOS SETUP AWARD SOFTWARE INC Date mm dd gy Thu Jan 8 1996 Tine hhimmiss 1 45 4 CYLS HEADS LANDZONE SECTORS MODE Drive User 3Mb 48 4 65535 4 32 AUTD Drive D User 14415 2792 16 65535 2791 63 AUTO Drive 1 44H 3 5 in Drive B Hone Base Memory 640K Video EGA UGA Extended Memory 31744K Other Memory 384K Halt On All But Keyhoard Total Memory 32768K ESC Quit 74 Select Iten PU PD Modify F1 Help Shift F2Z Change Color ROM ISA BIOS 2C4L6AKK BIDS FEATURES SETUP AWARD SDFIWARE INC Virus Warning Disabled Video BIOS Shadow Enabled CPU Internal Cache Enabled 8000 Shadow Disabled External Cache Enabled CCOO0 CFFFF Shadou Disabled Quick Power On Self Test Enabled D0900 D3FFF Shadow Disabled Boot Sequence 2 CA D4000 D7FFF Shadow Disabled Suap Floppy Drive
178. um Analyzer Service Manual xvii Preface xviii 3026 3 GHz Real Time Spectrum Analyzer Service Manual Introduction This manual contains information needed to properly service the 3026 Real Time Spectrum Analyzer as well as general information critical to safe and effective servicing To prevent personal injury or damage to the analyzer consider the following before attempting service m The procedures in this manual should be performed only by a qualified service person m Read the General Safety Summary and the Service Safety Summary beginning on page xi m Read Preparation for Use in section 2 Operating Information When using this manual for servicing be sure to follow all warnings cautions and notes Performance Check Interval Strategy for Servicing Generally the performance check described in section 4 Performance Verifica tion should be done every 12 months In addition performance check is recommended after module replacement If the analyzer does not meet performance criteria repair is necessary Throughout this manual the term module refers to any field replaceable component assembly or part of the analyzer This manual contains all the information needed for periodic maintenance of the analyzer Examples of such information are procedures for checking perfor mance Further it contains all information for corrective maintenance down to the module level To isolate a failure to a module
179. ure to do so could cause serious injury or death Section 10 lists all modules 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 9 Removal and Installation Procedures General Instructions STOP Read these general instructions before removing a module First read over the Summary of Procedures that follows to understand how the procedures are grouped Then read Equipment Required for a list of the tools needed to remove and install modules in this analyzer If you are removing a module for service begin by doing the procedure Access Procedure page 6 13 By following the instructions in that procedure you remove the module to be serviced while removing the minimum number of additional modules Summary of Procedures The procedures are described in the order in which they appear in this section In addition you can look up any procedure for removal and reinstallation of any module in the Table of Contents of this manual m The Access Procedure on page 6 13 first directs you to the procedure s if any that are required to access the module to be serviced then it directs you to the procedure to remove that module Table 6 4 Summary of procedures Procedure Module Page Procedures for m Line cord m Front panel assembly 6 19 External Modules m Cabinet m Rear cover Procedures for m Fan m Hard disk drive 6 30 Internal Modules m Display module m Solid state disk m Floppy disk drive Procedures for m A1 Mother b
180. ust be operating at an ambient temperature between 10 C and 440 3026 3 GHz Real Time Spectrum Analyzer Service Manual 1 3 Specifications Table 1 1 Warranted characteristics Frequency Characteristics Center frequency setting characteristic Description 0 1 Hz step PV reference page Spectrum purity 100 dBc Hz 10 kHz offset Table 1 2 Warranted characteristics Amplitude Characteristics Reference level range RF mode BASEBAND mode Maximum nondestructive input voltage Internal gain calibration accuracy Flatness 2 nd harmonic distortion 3 rd order distortion Residual response Image suppress 14 Description PV reference page 50 dBm to 30 dBm 30 dBm to 30 dBm 30 dBm 1 0 dB at 25 MHz 4 34 2 0 dB gt 500 Hz 2 0 dB and 5 0 dB 500 Hz 4 16 4 38 lt 70 dBc 10 dBfs input level lt 60 dBc lt 20 MHz and x 10 dBfs input level lt 70 dBc gt 20 MHz and x 10 dBfs input level x 40 dBfs lt DC 10 bins lt 65 dBfs center 2 bins lt 70 dBfs other than above x 70 dB 3026 3 GHz Real Time Spectrum Analyzer Service Manual Specifications Table 1 3 Warranted characteristics Realtime span Characteristics Description PV reference page Minimum spectral frame update interval 4 23 1024 point analysis 500 kHz to 5 MHz span 50 kHz to 200 kHz span 5 kHz to 20 kHz span 500 Hz to 2 kHz span 200 Hz span
181. ust the clock frequency Adjust Y610 on the oscillator so that the counter frequency is 10 MHz x 0 1 Hz 4 Restore the analyzer to normal operation a Power off the analyzer b Referring to Removal and Installation Procedures in Section 6 to reinstall the cabinet and other modules removed in step 1 3026 3 GHz Real Time Spectrum Analyzer Service Manual 5 7 Adjustment Procedures 5 8 Execution of Auto Calibration This procedure executes the internal auto calibration routine NOTE In this procedure you need a floppy disk storing the flatness correction file sflatoff txt Refer to Preparing the flatness correction file on page 5 11 for creating or updating the file Equipment Required One signal generator Item 2 One N N cable Item 8 One GPIB cable Item 9 One SG flatness floppy disk Item 15 Signal generator GPIB cable 50 Q N N coaxial cable Figure 5 4 Initial test hookup 1 Install the test hookup and preset the instrument controls NOTE If you have removed the cabinet of 3026 reinstall the cabinet and other modules removed Refer to Removal and Installation Procedures in Section 6 a Power off the 3026 and the signal generator b Connect the output of the generator through a N N coaxial cable
182. with any line voltage from 85 264 VACgys with any line frequency from 47 66 Hz Before plugging the cord in the outlet be sure that the power supply voltage is proper 3026 3 GHz Real Time Spectrum Analyzer Service Manual Installation Operating Environment Operating Temperature Ventilation Requirements The following environmental requirements are provided to ensure proper operation and long instrument life Operate the analyzer where the ambient air temperature is from 10 C to 40 C with no diskette in the floppy drive Store the analyzer in ambient temperatures from 20 C to 60 C with no diskette in the floppy drive After storage at temperatures outside the operating limits allow the chassis to stabilize at a safe operating temperature before applying power The analyzer has a exhaust fan on its left side panel Air enters the cabinet through the air intakes on the right side and exhausts through the exhaust fan To allow air circulation leave the following space around the analyzer When used on a bench top Top and bottom surfaces 2 5 cm or more Left and right surfaces 15 cm or more Rear surface 7 5 cm or more When mounted on 19 inch rack Top and bottom surfaces 2 5 cm or more Left and right surfaces 5 cm or more Rear surface 7 5 cm or more 3026 3 GHz Real Time Spectrum Analyzer Service Manual 2 3 Installation Applying and Interrupting
183. xternal Resolution 19 bits External trigger Input level 16V 0 2 V Acquisition mode Block or Roll Maximum block length 1 024 FFT points 1 000 frames 256 FFT points 4 000 frames 3026 3 GHz Real Time Spectrum Analyzer Service Manual 1 11 Specifications Table 1 16 Nominal traits System control Characteristics Description Bus type ISA CPU type 486 DX4 100 MHz Main memory 32 M bytes Hard disk drive 2 5 inches 3 M bytes solid state disk 2 5 inches 2 1 G bytes hard disk Floppy disk drive 3 5 inches 2HD 1 44 M bytes Table 1 17 Nominal traits AC line power Characteristics Description Line voltage 100 to 240 VAC Line frequency 48 Hz to 63 Hz Table 1 18 Nominal traits Mechanical Characteristics Description Dimensions 165 mm 376 mm handle included Net weight 13 0 kg 1 12 3026 3 GHz Real Time Spectrum Analyzer Service Manual Specifications Certification and Compliances The certification and compliances for the 3026 Real Time Spectrum Analyzer are listed in Table 1 19 Table 1 19 Certifications and compliances Characteristic EC Declaration of Conformity EMC Australia New Zealand Declaration of Conformity EMC Description Meets intent of Directive 89 336 EEC for Electromagnetic Compatibility Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Union EN 55011 Class
184. y board 2 d Now hand disassemble the front panel assembly components using Figure 6 13 as a guide Reverse the procedure to reassemble Rotary encoder J ss A2 Key board 1 x lt E To J08 on the A1 E A3 Key board 2 Mother board Figure 6 13 Disassembly of front panel assembly 3026 3 GHz Real Time Spectrum Analyzer Service Manual 6 27 Removal and Installation Procedures Front Panel Connectors 6 28 1 Reinstallation a Ifthe front panel assembly was further disassembled in step 4 then reverse substeps 4a 4d to reassemble using Figure 6 13 as a guide b Do in reverse order the substeps in step 3 to reinstall the front panel assembly c Reinstall the trim ring referring to the procedure Trim Ring and Menu Buttons on page 6 24 Assemble equipment and locate modules to be removed a Have available a screwdriver with a size 2 Phillips tip Items 1 and 3 and a g inch open end wrench Item 8 b Locate the module to be removed in the locator diagram External modules Figure 6 3 page 6 14 Do the procedure Trim Ring and Menu Buttons on page 6 24 to remove the trim ring only Orient instrument Set the analyzer so its bottom is down on the work surface and its rear is facing you Remove the RF input connector See Figure 6 14 a Remove the rigid cable W36 to the RF INPUT on the front panel using a 3 6 inch wrench b Remove the four screws attac
185. yzer Service Manual Performance Verification d Set the 3026 controls Press the START STOP button to stop data acquisition Press DISPLAY A Spectrum button Press SETUP gt Range gt 50 10MHz Press FREQ button and set the frequency using the keypad Press REF LEVEL button and set the reference level using the keypad 2 Acquire data a Press the ROLL BLOCK button to select the Roll mode b Press the START STOP button to start data acquisition 3 Check the frequency a Press MARKER gt Peak Find Highest Peak to place the marker on the peak signal b Read the frequency on the screen Check that the frequency is within a range of 5 MHz 2 7 Hz 4 Disconnect the hookup a Disconnect the N N cable at the 3026 RF INPUT b Disconnect the BNC cable at 10 MHz reference input of the generator 3026 3 GHz Real Time Spectrum Analyzer Service Manual 4 15 Performance Verification Flatness and Aliasing Test This procedure checks the flatness and aliasing errors are within the specified range Equipment One signal generator Item 2 Required id One 50 Q N N coaxial cable Item 10 Prerequisites See page 4 8 Signal generator Output RF input 50 Q N N coaxial cable Figure 4 7 Initial test hookup 1 Install

Service Manual 3026 3 GHz Real Time Spectrum

Contents

Download Pdf Manuals

Related Search

Related Contents