Aeroflex-IFR-Marconi 2948 Datasheet
Contents
1. Connector 9 way female D Type POWER REQUIREMENTS AC Supply Voltage 100 240 V 108 118 V Limit 90 264 V 98 132 V AC Supply Frequency 50 60 Hz 50 400 Hz Limit 45 66 Hz 45 440 Hz Maximum AC Power 190 VA DC Supply Voltage 11 to 32V Maximum DC Power 100 W CALIBRATION INTERAL 2 years ELECTROMAGNETIC COMPATIBILITY Conforms with the protection requirements of Council Directive 89 336 EEC Complies with the limits specified in the following stan dard IEC EN61326 1 1997 RF Emission Class B Immunity table 1 Performance Criteria B Safety Conforms with the requirements of EEC Council Directive 73 23 EEC as amended and the product safety standard IEC EN 61010 1 2001 C1 2002 C2 2003 for Class 1 portable equipment for use in a Pollution Degree 2 environment The instrument is designed to be operated from an Installation Category 2 supply CALIBRATION INTERVAL 2 years ENVIRONMENTAL Rated Range of Use O to 50 C and up to 95 relative humidity at 40 C Storage and Transport Temperature 40 to 71 C Altitude Up to 2500 m pressurised freight at 27 kPa differential DIMENSIONS AND WEIGHT Height 278mm 7 in Width 380 mm 15 in Depth 457 mm 18 in including handle feet and covers Weight Less than 12 kg standard version OPTIONS AND ACCESSORIES 600 Q MATCHING UNIT OPTION 1 INPUT CIRCUIT Impedance 600 Q Return Loss gt 21 dB at 1 kHz Frequency Response 0 5 dB2. 1 Hz below 3 25 kHz 1 Hz above 3 25 kHz AUDIO FREQ L 0001kH z OoOo LEVEL LAAMU Audie AFI FREQ 1 G 00kHz Gen E a AF Sin LEVEL 168 Gimli AF FREH 67 GHz Sin LEVEL 180 ml ott Dror ements RFI FREGE Lats AFA LEVEL 10 mU gt EEA aee 88S FT TS Accuracy 0 01 Hz below 180 Hz 0 1 Hz above 180 Hz LEVEL Level Range 0 1 mV to 4 VRMS Setting Keyboard entry delta increment decrement functionsand rotary con trol Indication 4 digits Resolution 0 1 mV below 409 mV 1 mV above 409 mV Accuracy 5 resolution 50 Hz 15 kHz Output Impedance Nominally 5 Q minimum load 25 W Distortion Less than 0 5 at 1 kHz Less than 1 from 50 Hz to 15 kHz Signaling Encoder Decoder Sequential tones functions including revert User defined tones Encodes and decodes up to 40 tones CCIR ZVEI DZVEI EEA EIA or user defined Any of the tones may be extended Continuous burst and single step modes available Up to two frequency plans may be defined and stored within the 2948 for sequential tones Any of the standard tone frequency plans may be copied to user defined and modified Tone length 20 ms to 1 s Standard tone frequencies may be selected from a menu Generation and decoding of DTMF tones Generation and decoding of DCS Digitally Coded Squelch Generation of POCSAG code CCIR No 1 Rec 584 Bit rates from 400 to 4800 bit s Inversion available AUDIO MONITOR Demodulated signals and au
3. Maximum input voltage 30 VRMS 50 Vdc Level Ranges O 100 mV to O 100 V RMS in a 1 3 10 sequence Digital readout also in mW user selectable Resolution 1 mV or 1 of reading Indication 3 digits and bar chart Accuracy AC 3 3 mV resolution up to 30 V RMS Accuracy DC 1 50 mV up to 40 V AUDIO FREQUENCY METER Frequency Range 20 Hz to 50 kHz Resolution 0 1 Hz less than 10 kHz 1 Hz at 10 kHz and above Indication 5 digits Accuracy As frequency standard 1 digit resolution Sensitivity 50 mV AUDIO SINAD METER Frequency 1 kHz Range O to 18 dB and O to 50 dB Resolution 0 1 dB Indication 3 digits and bar charts Accuracy 1 dB Sensitivity 50 mV 100 mV for 40 dB SINAD reading suppressed if audio voltage is less than 5 mV AUDIO DISTORTION METER Frequency 1 kHz Range O to 10 and O to 30 Resolution 0 1 distortion Indication 3 digits and bar charts Accuracy 1 dB of reading 0 5 distortion Sensitivity 50 mV 100 mV for 1 distortion reading suppressed if audio voltage is less than 5 mV AUDIO S N METER Range O to 30 dB and O to 100 dB Resolution 0 1 dB Indication 3 digits and bar chart Accuracy MdB Sensitivity 50 mV 100 mV for 40 dB S N reading suppressed if audio voltage is less than 5 mV AUDIO OSCILLOSCOPE Operating Modes Single or repetitive sweep Frequency Range DC to 50 kHz 3 Hz to 50 kHz AC coupled Voltage Range 10 mV to 20 V per division in
4. a 1 2 5 sequence Voltage Accuracy 5 of full scale FM Ranges 75 30 15 6 3 and 1 5 kHz deviation full scale 10 accuracy AM Ranges 20 10 and 5 per division 10 accuracy Timebase 50 us div to 5 s div in a 1 2 5 sequence Graticule 10 Horizontal by 6 Vertical divisions Special features Built in antialiasing circuitry and variable decode trigger level AUDIO BAR CHARTS Bar chart Displays AF Voltage SINAD Distortion S N For the very latest specifications visit WWW a e rofl ex CO m Vertical Resolution 2 of full scale Ranging Autoranging range hold or manual selection 1 2 5 sequence with hysteresis Audio and Modulation Filters 300 Hz 3 kHz 15 kHz Lowpass 300 Hz to 3 4 kHz Bandpass 300 Hz Highpass 750 us de emphasis 50 kHz Lowpass No filters applied Audio Analyzer General Features Tones Mode RF FREQUENCY METER Frequency Range 400 kHz to 1 05 GHz manual tune 10 MHz to 1 GHz autotune Resolution 1 Hz or 10 Hz up to 1050 MHz selectable 0 1 Hz 1 Hz or 10 Hz up to 999 MHz selectable Indication Up to 10 digits Accuracy As frequency standard resolution Acquisition Time Less than 1 second manual Typically 3 seconds autotune Sensitivity Autotuned 5 mW N Type 0 05 mW Antenna port Manual Tuned 34 dBm N Type 60 dBm Antenna port VSWR N Type Better than 1 2 1 up to 500 MHz Better than 1 25 1 up to 1 05 GHz BNC Better than 3 1 up to 1 05 GHz RF POWER METER
5. for testing ILS VOR Marker Beacons and SELCAL Full details of the Avionics features can be found in the 2946A data sheet part number 46891 030 BAIL ARM FRONT COVER OPTION 30 Provides a Bail arm carrying handle and front panel cover and storage area The Bail arm will also provide additional viewing angles when mounted on a bench Notes 1 at low modulation levels the residual AM FM may become significant VERSIONS AND ACCESSORIES When ordering please quote the full ordering number information Ordering Numbers Versions 2948 Low Noise Communications Service Monitor Options Option 1 600 Q Matching Unit Option 2 Analog Systems Card Option 4 Parallel InterfaceT Option 5 GPIB InterfaceT Option 6 Memory Card Drive with real time clock Option 8 SSB demodulator Option 9 Occupied Bandwidth Measurement Note Option 2 required when ordering any of the following options 10 to 16 Option 10 NMT Cellular Option 11 AMPS Cellular Option 12 TACS Cellular Option 13 MPT 1327 trunking Option 14 Option 15 Option 16 Option 22 Option 23 Option 24 Option 25 Option 30 PMRTEST EDACS Radio Test EDACS Repeater Test POCSAG Decode CCITT Filtert CMESS Filtert Avionics Bail Arm and Front Panel Stowage Supplied Accessories AC Supply lead DC Supply lead Operating Manual Optional Accessories 44991 145 59000 1389 59000 375 466062 571 46662 616 54112 163 54431 023 46884 728 54421 001 468
6. relay contacts are provided with the optional parallel printer interface This allows remote control of radios or test fixtures from built in automatic tests Custom Programs Users may program the instrument to suit their own specific needs This is possible either by configuring any of the 4 built in programs or by using the MI BASIC snterpreter to produce a customised test program that can be ex cuted internally without an external con troller Test Proar an DALL PROCESS OHL THG z Gal TING COMPREHEHSIVE TESTING USER GEFIMED TEST Memory Card with real time clock The memory card drive meets the PCMCIA standard format for PC cards The 2948 provides a DOS based filing system that allows trans fer of information to a PC fitted with a memory card slot Test setups test results screen dumps spectrum analyzer co ordi nates and test sequences can all be stored on the memory card allow ing information to be easily stored and retrieved when required Reliability The 2948 features high integration and a chassis designed to max imise mechanical protection Audio Analysis A comprehensive range of filters are provided as standard including band pass low pass and high pass Optional filters are available for psophometric weighting of audio signals and demodulation of signals in a simulated radio channel bandwidth The direct measurement of CTCSS is possible with the 300 Hz LP filter even with speech pre
7. tract We reserve the right to make design changes without notice All trademarks are acknowledged Parent company Aeroflex Inc Aeroflex 2004 SCANDINAVIA Tel 45 9614 0045 Fax 45 9614 0047 SPAIN Tel 34 91 640 11 34 Fax 34 91 640 06 40 UK Burnham Tel 44 0 1682 604455 Fax 44 0 1682 662017 www aeroflex com info test aeroflex com UK Stevenage Tel 44 0 1438 742200 Fax 44 0 1438 727601 Freephone 0800 282388 a EROFLEX Tel 1 316 522 4981 A passion for performance Fax 1 316 522 1360 Toll Free 800 835 2352 Our passion for performance is defined by three attributes represented by these three icons solution minded performance driven and customer focused Part No 46891 079 Issue 15 08 04
8. 84 650 46884 649 46884 648 59999 170 54421 002 54421 003 54432 012 46880 082 Microphone with PTT Memory Card 128k Memory Cadr 2 M Ever Ready Case Ever Ready Case for use with Option 30 Hard Transit Case 20 dB AF attenuator BNC Rack Mounting Kit BNC Telescopic Antenna Serial port to PC control cable 9 way Serial port to PC control cable 25 way RS 232 Printer cable 25 way RF Directional Bridge RF Directional Power Head 1 to 50 MHz RF Directional Power Head 25 to 1000 MHz Wideband Amplifier 100 Hz to 500 MHz Service Manual f Options 4 and 5 can not be fitted together f Options 23 and 24 can not be fitted together For the very latest specifications visit WWW a e rofl ex CO m CHINA Beijing Tel 86 10 6467 2761 2716 Fax 86 10 6467 2821 CHINA Shanghai Tel 86 21 6282 8001 Fax 86 21 62828 8002 FINLAND Tel 358 9 2709 5541 Fax 358 9 804 2441 FRANCE Tel 33 1 60 79 96 0O Fax 33 1 60 77 69 22 GERMANY Tel 49 8131 2926 0 Fax 49 8131 2926 130 HONG KONG Tel 852 2832 7988 Fax 852 2834 5364 INDIA Tel 91 80 5115 4501 Fax 91 80 5115 4502 KOREA Tel 82 2 3424 2719 Fax 82 2 3424 8620 As we are always seeking to improve our products the information in this document gives only a general indication of the product capacity performance and suitability none of which shall form part of any con
9. AND III JRC UK WATER HONG KONG AUTONET AMT MADEIRA NL TRAXIS NZ MPT1327 PH INDO USER DEFINED MPT PMRTEST SOFTWARE OPTION 14 USER DEFINED PMR for FM radio s EDACS RADIO TEST SOFTWARE OPTION 15 Provides Auto Manual test capability for EDACS radios Up to 4 User defined variants can be created and stored each with up to 24 spot channel frequencies EDACS REPEATER TEST SOFTWARE OPTION 16 Provides Auto Manual test capability for EDACS repeaters Up to 4 user defined variants can be created and stored each with up to 24 spot channel frequencies A data logging facility is also available to continuously decode and display data messages from the repeater under test EDACS is an Ericsson GE registered trademark IFR is an EDACS trunking licensee POCSAG DECODE OPTION 22 Allows off air decoding of POCSAG messages Can decode a message as it is received or decoding can be triggered from a user selectable RIC code or fixed message pattern Bit Rate Automatically decodes any standard bit rate up to 4800 bits s Numeric or alohanumeric decoding is provided Number of received errors is displayed CCITT FILTER OPTION 23 Allows a CCITT filter to be inserted into either the demodulated audio path or the audio input path CMESS FILTER OPTION 24 Allows a CMESS filter to be inserted into either the demodulated audio path or the audio input path AVIONICS OPTION 25 Provides amplitude modulated signals
10. BROADBAND Frequency Range 200 kHz to 1 05 GHz Dynamic Range 5 mW to 150 W N Type 0 05 mW to 250 mW Antenna port Indication Units Watts dBm or dBW Indication 3 digits or bar chart Resolution 0 1 dB max typically 1 Accuracy N Type 10 resolution up to 1 GHz Maximum Continuous Rating N Type 50 W at 20 C BNC output 5 W Antenna port 1 W Intermittent Rating N Type 150 W for limited periods typically 1 minute at 20 C Overload indicated by audible and visual warning TRANSMITTER TEST TH FREQ 734 5ee0 1 ONHz FE Bison Na Auto tune POWER 3 8n HFI FREGI 1 6 80kHz Sin LEVEL 16 Oni EEUE OR ee ea AF2 FREQ 1 0800kHz Sin LEVEL 168 8m ott 1kHzrdiv SFY 2hBus diw d FH LEVEL 2 4 kHz 134a Increments AFi FREQ 168Hz AFL LEVELS 16 BniJ IF FILTER SakHz AF FILTER 8 2 to 3 4kHz HARMONIC AND TRANSIENT ANALYSIS Harmonic Measurement Displays 1st to 5th harmonic of the selected carrier Maximum Harmonic Frequency 1 05 GHz Dynamic Range O to 60 dBc TRANSIENT POWER ANALYSIS Displays power profile against time Frequency Range 1 to 1050 MHz Dynamic Range 60 dB below spectrum analyzer reference level Scale power 10 dB div Scale time 50 us division to 5 s div Trigger Level Adjustable over full dynamic range ve or ve trigger selection Pre trigger O 25 50 75 or 100 of displayed period MODULATION METER Sensitivity Autotuned 5 mW N Type 0 05 mW Antenna port Manual T
11. Test Equipment Solutions Datasheet Test Equipment Solutions Ltd specialise in the second user sale rental and distribution of quality test amp measurement T amp M equipment We stock all major equipment types such as spectrum analyzers signal generators oscilloscopes power meters logic analysers etc from all the major suppliers such as Agilent Tektronix Anritsu and Rohde amp Schwarz We are focused at the professional end of the marketplace primarily working with customers for whom high performance quality and service are key whilst realising the cost savings that second user equipment offers As such we fully test amp refurbish equipment in our in house traceable Lab Items are supplied with manuals accessories and typically a full no quibble 2 year warranty Our staff have extensive backgrounds in T amp M totalling over 150 years of combined experience which enables us to deliver industry leading service and support We endeavour to be customer focused in every way right down to the detail such as offering free delivery on sales covering the cost of warranty returns BOTH ways plus supplying a loan unit if available and supplying a free business tool with every order As well as the headline benefit of cost saving second user offers shorter lead times higher reliability and multivendor solutions Rental of course is ideal for shorterterm needs and offers fast delivery flexibility try before you buy zero capital expendi
12. ard facility allows the storage of results set ups screen dumps and user programs with SRAM cards Meets PGMCIA 2 stan dard Allows the current date and time to be stored with results to the mem ory card and or printed with a screen dump SSB DEMODULATOR OPTION 8 The SSB demodulator allows signals to be demodulated either via the internal loudspeaker or via the accessory socket Provides demodula tion of SSB signals upper and lower sideband Frequency Range 400 kHz to 1 GHz AF Demodulation Range 10 Hz to 15 kHz Distortion Typically less than 3 at 1 kHz 300 to 3 4 kHz Detection Range 2 uV to 150 W Features Automatic detection of USB or LSB BFO can be used for tuning of carrier for AM and FM radio s OCCUPIED BANDWIDTH MEASUREMENT OPTION 9 Calculates the bandwidth of a signal displayed on the spectrum analyz er Frequency Range 1 MHz to 1 GHz Display Resolution 3 digits Accuracy 20 Bandwidth Measurement Range 3 kHz minimum Ratio range 90 99 selectable in 0 1 steps NMT CELLULAR SOFTWARE OPTION 10 NMT 450 NMT 900 Benelux NMTF Austria Spain Malaysia Indonesia Saudi 1 Saudi 2 Thailand Oman Tunisia Hungary Poland Russia Czech Bulgaria Slovenia Turkey USER DEFINED NMT AMPS CELLULAR SOFTWARE OPTION 11 E AMPS WSER DEFINED AMPS TACS CELLULAR SOFTWARE OPTION 12 N AMPS E TACS TACS 2 C TACS C TACS II J TACS N TACS USER DEFINED TACS MPT 1327 TRUNKING SOFTWARE OPTION 13 B
13. at 200 Hz to 5 kHz 2 dB at 100 Hz to 20 kHz Accuracy of 1 1 input output ratio 1 at 1 kHz accuracy of 2945A 2946A or 2948 Maximum Input 5 V RMS maximum at 200 Hz to 5 kHz 3 V RMS maximum at 100 Hz to 20 kHz OUTPUT CIRCUIT Impedance 600 Q Return Loss gt 21 dB at 1 kHz For the very latest specifications visit WWW a e rofl ex CO m Frequency response 0 5 dB at 200 Hz to 5 kHz 2 dB at 100 Hz to 20 kHz Level Accuracy 2 at 1 kHz accuracy of 2945A 2946A or 2948 Output Level 1 mV to 2 5 V RMS across 600 Q ANALOG SYSTEMS CARD OPTION 2 This option provides automatic testing for cellular trunked and FM radios and a BASIC Interpreter for customized tests PARALLEL INTERFACE OPTION 4 Allows direct connection of a parallel printer Additionally provides 4 software programmable output lines Printer Port Connector 25 way female D type Printers Supported 75 100 150 dots per inch laser printers FX 80 FX 100 Epson for mat Accessory Port Connector 9 way female D type Outputs 4 independently programmable output lines each one configurable as a logic line or as a relay contact closure 5V supply available GPIB OPTION 5 Capability For printing remote instrument control or for programming of user defined test sequences Complies with the following subsets defined by IEEE488 SH1 AH1 T6 L4 SRI RL1 DIO El DCI MEMORY CARD DRIVE AND REAL TIME CLOCK OPTION 6 The memory c
14. dio signals may be monitored via the inter nal loudspeaker and the accessory socket output on the front panel CELLULAR AND TRUNKING Test Modes Auto test manual test Auto Test Programs Call processing only Call and RF testing Brief testing Comprehensive testing Parametric Auto Test Routines AF Frequency AF Level FM Deviation Mod frequency Rx Distortion Rx expansion Rx sensitivity Rx SINAD Rx S N Tx Compression Tx Distortion Tx frequency Tx Level Tx Power Level Tx Limiting Tx Mod Level Tx Noise Tx SINAD TX S N Signaling Auto Test Routines Registration Roaming Update Place Call Page Mobile Clear from Land Clear from Mobile Handoff Hook Flash DTMF Decode Data Performance PTT On PTT Off SAT Deviation SAT Frequency ST Duration ST Frequency ST Deviation DSAT Deviation FREQUENCY STANDARD Internal Frequency Standard OCXO Frequency 10 MHz Temperature Stability Better than 5 parts in 108 O to 55 C Ageing Rate Better than 1 part in 10 per year after 1 month continous use Warm up Less than 10 minutes to within 2 parts in 10 at 20 C External Frequency Standard Input Frequency 1 2 5 and 10 MHz Input Level Greater than 1 V peak to peak Input Impedance Nominally 1 KQ GENERAL Keyboard and Display Logical color coded keyboard with bright high resolution fast LCD Display Size 160 x 85 mm RS 232C RS 232C interface is provided for printing and remote Instrument con trol
15. e ability to examine signals on the screen and demodulate them simultaneously Intermittent interference can be isolated quickly and the signals then easily identified The trace can be saved to memory card along with the time and date providing factual evidence that can be recalled later This feature is particularly useful when looking for rogue trans missions especially on busy base station sites From 2 pV to 150 Watts The 2948 measures the power of low level signals such as those encountered when monitoring off air signals or those found when probing a circuit 150 Watts measurement is provided without the need for external attenuators so the high power of base stations can be measured directly Measurement accuracy of better than 10 is guaranteed all the way down to 5 mW on the N Iype connector allow ing cellular radios to be qualified at low power levels Accurate RF Signals The signal generator provides coverage from 400 kHz to 1 05 GHz with 5 dBm output 7 dBm overrange and fast switching speed Level accuracy is 2 dB at all levels above 127 dBm Duplex provided as standard Full duplex operation is provided by the 2948 This allows testing of duplex radios as well as simultaneous testing of repeater transmit and receive paths There are no restrictions to the duplex offset Cellular and Trunking built in AMPS TACS and NMT analog cellular standards are available inter nally with all country variants pro
16. nsient and harmonic analysis e Fast response high resolution bar charts for peaking and nulling e Tracking generator with full offset track ing e Full span spectrum analyzer with live look and listen The 2948 Communications Service Monitor is the lightest most rugged service monitor avail able with low phase noise signal generation For field work the 2948 provides an excellent combination of instruments for all types of maintenance work In the workshop it provides all of the performance you would expect for exacting measurements Low Phase Noise Signal Generator The 2948 differs from its 2945A cousin by provid ing a low phase noise signal generator as standard This enhanced capability allows accurate meas urement of the noise characteristics of all FM receivers and is especially beneficial when making accurate measurement of narrow band receivers The performance of the 2948 enables signal to noise measurements of better than 46 dB to be made on receivers with 12 5 kHz channel spacing ase noise signal generator fer th more critical receiver testing Field Operation At under 12 ke the 2948 lightens the load to remote sites The shape Oivthe 2948 is ideal for carrying the side handle ensures that the instrument is clear of the stairs when ascending buildings and the 2948 s depth is suitable forthe instrument to be operated comfort ably when its placed on the floor An optional bail arm handle is also a
17. ontrol the tones from the top level screens POCSAG Decode built in option Off air decoding of POCSAG signals is provided as an option This allows tone numeric and alphanumeric messages to be dis played Signals with bit rates of up to 4800 bits s can be automatical ly decoded making the 2948 an ideal surveillance tool The 2948 can be set to detect all messages a user selectable RIC just like a pager or a fixed message string HOLD RF POCSAG DECODER 66 07 600NH2 FIC pennon Decode format Alehanumer ic Decode ant All Bit Rate 1 28 8kHz Polarity Hormel RIC 0377168 Adar Alart Tweet tarena bene Bee Message Type Text Message 26 If poss call Bob in office Errored Cadawordet Correctedt a SPECIFICATION RF SIGNAL GENERATOR FREQUENCY Frequency Range 400 kHz to 1 05 GHz Resolution 10 Hz Indication 10 digit display Setting Keyboard entry delta increment decrement function and rotary control Accuracy As frequency standard RECEIVER TEST GEH FREQ 153 12500MHz AUDIO FREG 1 e000kHz Pb LEVEL 282W a ee Mod Ge MODI FREG 1 0000k HZ Mim LEVEL 1 258kHz AF WHORE FREGI Tone Filter Stn LEVEL S8GHz SGmlle div 28Gus div bistin SOURCE Ext Hod i p Aun io EXT LEVEL SeGHs fA AAS F Lrieremernts MODI FREH i Hhz Score AF FILTER 0 3 to AWH Bar COUPLING AC OUTPUT LEVEL Output Level Range Rx Test N type socket 141 dBm
18. sent Two comprehensive audio generators are provided as standard for internal modulation or audio sources for transmitter stimulus External DC coupled FM is provided Comprehensive Oscilloscope Analysis of audio signals whether from the demodulated signal or the audio input direct can be viewed for further inspection The oscillo scope can either be combined with the measurement screen in the Tx Rx or AF test modes or zoomed to a full screen display Different levels of persistence can be selected to allow short or long term effects to be captured rales CT LT mee Tria Tristar Level Lavs J 808 m Tria is edac Pre Tria Pre 25h Tria Tx Frea 164 F99209rhHz Akr 24 8680 Bus After Triper Transient Analysis The ability to capture transients on the rising or falling edge of a waveform provides a valuable tool for fault finding radios and radio systems The user has full control of the trigger level and input atten uation as well as the timebase and five fixed trigger points making this feature simple and flexible to operate Harmonic Analysis An automatic harmonic analysis function is included in the 2948 This complements the fast spectrum analyzer and allows a rapid check that the transmitter under test is not producing any excessive harmonics Tones Generation and Decoding The tones menus include full remote control so that radio workshops can further automate their tasks and better c
19. to 21 dBm BNC socket 115 dBm to 5 dBm overrange to 7 dBm Resolution 0 1 dB Indication A digits plus sign dBm dBuV uV mV PD EMF Accuracy 2 dB for level above 127 dBm on N Type socket up to 1 GHz Reverse Power Protection N Type 50 W 10 minutes normal operation 150 W for 1 minute at 20 C Overload indicated by audible and visual warning BNC 5 W Overload indicated by audible and visual warning Output Impedance Nominally 50 Q VSWR N Type Better than 1 2 1 up to 500 MHz Better than 1 35 1 up to 1 05 GHz BNC Better than 2 2 1 up to 1 05 GHz For the very latest specifications visit WWW a e rofl ex CO m SPECTRAL PURITY Residual FM Less than 6 Hz RMS 0 3 to 3 4 kHz up to 500 MHz Less than 12 Hz RMS 0 3 to 3 4 kHz up to 1 05 GHz Harmonics 25 dBc Spurious Signals Better than 50 dBc SSB Phase Noise 20 kHz offset Better than 112 dBc Hz up to 500 MHz Better than 108 dBc Hz up to 1 GHz RF Carrier Leakage Less than 0 5 uV PD generated in a 50 Q load by a 2 turn loop 25 mm from the case Output level less than 40 dBm into a sealed 50 Q load AMPLITUDE MODULATION INTERNAL Frequency Range 400 kHz to 1 05 GHz AM Depth Range O to 99 Resolution 1 Indication 2 digits Setting Keyboard entry delta increment decrement funetion and rotary con trol Accuracy For carrier frequencies from 1 5 MHz to 400 MHz 5 at 50 for modulation frequency of 1 kHz 7 1 digit for modulation freq
20. ture lower risk and off balance sheet accounting Both second user and rental improve the key business measure of Return On Capital Employed We are based near Heathrow Airport in the UK from where we supply test equipment worldwide Our facility incorporates Sales Support Admin Logistics and our own in house Lab All products supplied by Test Equipment Solutions include No quibble parts amp labour warranty we provide transport for UK mainland addresses Free loan equipment during warranty repair if available Full electrical mechanical and safety refurbishment in our in house Lab Certificate of Conformance calibration available on request Manuals and accessories required for normal operation Free insured delivery to your UK mainland address sales Support from our team of seasoned Test amp Measurement engineers ISO9001 quality assurance Test equipment Solutions Ltd Unit 8 Elder Way Waterside Drive Langley Berkshire SL3 6EP T 44 0 1753 596000 F 44 0 1753 596001 Email info TestEquipmentHQ com Web www TestEquipmentHQ com Wireless 2948 Low Phase Noise Communications Service Monitor EROFLEX A passion for performance i 2 Te ee el i BeEEeeB a Sh E OVW Pe All the benefits of the 2945A but with alow e Low phase noise signal generator e High stability reference oscillator OCXO as standard e Accurate power measurement to 150 W e Tra
21. uency of 1 kHz 15 1 digit for modulation frequencies from 50 Hzto 15 kHz Distortion Less than 2 at 1 kHz for 30 AM CCITT weighted Modulation Frequency 20 Hz to 20 kHz AMPLITUDE MODULATION EXTERNAL Input Impedance Nominally 10 kQ in parallel with 40 pF Frequency Range As internal AM Modulation Frequency Range As internal AM Sensitivity 1 V RMS for 100 AM FREQUENCY MODULATION INTERNAL Frequency Range 400 kHz to 1 05 GHz Maximum Deviation 75 kHz Indication 3 digits Setting Keyboard entry delta increment decrement function and rotary control Accuracy 1 7 at 1 kHz modulating frequency 10 at modulating frequencies from 50 Hz to 15 kHz Distortion Less than 1 at 1 kHz for deviation of 5 kHz CCITT weighted Modulation Frequency Range 20 Hz to 25 kHz Resolution 2 SelAZ Pre emphasis 750 us selectable FREQUENCY MODULATION EXTERNAL Input Impedance Nominally tO kQ in parallel with 40 pF Frequency Range As internal FM Modulation Frequency Range DC to 100 kHz Pre emphasis 750 us selectable Sensitivity 1 VRMS for O to 75 kHz deviation MICROPHONE INPUT Input Level 2 mV to 200 mV AGC levelled Input Impedance Nominally 150 Q Press To Talk PTT When using the optional microphone in Tx Test mode the PTT will switch instrument to Rx Test AUDIO VOLTMETER Input Impedance Nominally 1 MQ in parallel with 40 pF Frequency Range DC and 50 Hz to 50 kHz AC only 50 Hz to 50 kHz Polarized DC below 1 Hz
22. uned 34 dBm N Type 60 dBm Antenna port Audio and Modulation Filters 300 Hz 3 kHz 15 kHz Lowpass 300 Hz to 3 4 kHz Bandpass 300 Hz Highpass 750 us de emphasis 50 kHz Lowpass No filters applied AMPLITUDE MODULATION Frequency Range 400 kHz to 1 05 GHz Modulation Frequency Range 10 Hz to 15 kHz AM Depth Range O to 99 manually tuned O to 90 below 100 MHz O to 80 from 100 to 400 MHz Resolution 1 AM Indication 2 digits and bar chart Accuracy 1 5 1 digit at 1 kHz 8 5 1 digit from 50 Hz to 10 kHz Demodulation Distortion Less than 2 at 1 kHz and 30 AM CCITT weighted Residual AM Less than 1 300 Hz to 3 4 kHz Demodulation Output 50 mV peak to peak for 1 AM FREQUENCY MODULATION Frequency Range 400 kHz to 1 05 GHz Modulation Frequency Range 10 Hz to 15 kHz Deviation Range O to 75 kHz Resolution 10 Hz below 2 kHz deviation 1 above 2 kHz deviation Indication 3 digits and bar chart Accuracy 5 resolution at 1 kHz modulation frequency 7 5 resolution for modulation frequencies 50 Hz to 10 kHz Demodulation Distortion Less than 2 at 1 kHz and 5 kHz FM CCITT weighted Residual FM Less than 30 Hz 300 Hz to 3 4 kHz Demodulation Output Socket 200 mV peak to peak 10 per 1 kHz deviation RF SPECTRUM ANALYZER Frequency Range 400 kHz to 1 05 GHz Spans 1 kH2 division to 100 MHZ division in a 1 2 5 sequence or continu ously variable Start stop facilit
23. vailable This option allows a stowage coyer to be fitted over the front panel for storage of adapters and further protection to the instrument s front panel Full opera tion is possible from the protective ever ready case so that your investment is protected from transit damage Stored settings may be recalled from internal memory or from a memory card allowing fast and straightforward setting up Fast Full Performance Spectrum Analyzer provided as stan dard Ret Lere kef Level 0 0n iert LeBed be Scale Uid Filter H On Peak Hold f off kerkee sacoe Ve ee A E to Ref Gi ia TRAF A avai Gen sk ri Centre See 619 235NH z Sean 21 49kHz Mer 18 5dBn 560 81B26HHs Res BL 2agH The spectrum analyzer provides spans from 100 Hz per division to 100 MHz per division and also has a fully adjustable reference level Speed is comparable with analog analyzers allowing real time adjust ments over the displayed dynamic range With the tracking genera tor provided as standard duplexers and filters can be aligned quick ly and easily An offset facility provides testing of equipment with fre For the very latest specifications visit WWW a e rofl ex CO m quency translation Channel stepping can be performed by defining an increment and then using the FREQ keys This is particular ly useful when testing multi channel systems Live Look and Listen This feature puts the 2948 above all of its peers with th
24. vided in each package Trunking for MPT 1327 1343 and variants of thems also available A new trunking capability has been added with the introduction of EDACS Radio and Repeater test capability Remote control of the inbuilt tests is provided so thatsmeasurements can be started and results logged automatically Fabio SYSTEM SELECTION MENU ne Swrtens Ho ESSTEM F HE HULTI AKFS AULT I TACS Network Simulation The 2948 simulates the signalling protocol that the radio would see from the real network This allows calls to be set up and handled enabling receiver and transmitter parametric measurements to be made Remote Control RS 232 or GPIB Remote control is provided with an RS 232 interface as standard An IEEE 488 2 interface option 5 can be fitted where other instru ments are required to operate in a system with the 2948 Printing Made Easy With the parallel printer port interface screen dumps automatic test results or previously stored results may be sent to most parallel print ers These facilities are available as standard using the serial RS 232 interface A screen capture facility is available so any screen displayed on the 2948 can be saved direct to a PC via the serial port as a bit map file Autorun internal control With the Analog Systems Card fitted automatic testing without an external controller is possible Custom tests may be written and run by the operator Four programmable
25. y allows selection of infinitely variable span width Resolution Bandwidth 300 Hz 3 30 300 kHz 3 MHz Reference Level top of screen 50 dBmto 52 dBm 0 7 mV to 71 V Displayed Dynamic Range 80 dB Noise floor Typically 75 dB below top of screen On Screen Linearity Typically 2 dB 1 resolution 10 dB div 10 dB above noise floor Vertical Resolution ON dB on 2 dB division 0 5 dB on 10 dB division Level Flatness 2 dB resolution 10 dB div Intermodulation Distortion Better than 70 dB for two signals at 30 dBm into first mixer Sweep Speeds 10 ms div to 200 ms div in a 1 2 5 sequence optimum sweep speed and bandwidth selected according to span or user selectable Span Resolution Update Bandwidth Sweeps sec 10 kHz 300 Hz 5 100 kHz 3 kHz 9 1 MHz 30 kHz 9 10 MHz 300 kHz 9 100 MHz 300 kHz 5 1000 MHz 3 MHz 5 Marker Indication Level and frequency or delta marker from centre line of screen Single marker for frequency and level display Marker to centre frequency marker Features Simultaneous Look and Listen soans 100 kHz 200 kHz 500 kHz 1 MHz For the very latest specifications visit WWW a e rofl ex CO m Sensitivity 2 uV Tracking Generator Offset Frequency Range 0 999 MHz 400 kHz to 1000 MHz AUDIO GENERATORS FREQUENCY Frequency Range 10 Hz to 25 kHz sine or square Setting Keyboard entry delta increment decrement function and rotary con trol Indication 5 digits Resolution 0
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