Equipment information

IFR 2945A Communications Test Set
Manufacturer:
Model:
2945A
Date:
2000
Category:
Group:
Description:
Communications Service Monitor

Information

Purpose and features 2945A is a portable Communications Service Monitor for carrying out production, routine and maintenance testing on radio transmitters, receivers and two way radio communication equipment. The Service Monitor contains modules to provide facilities equivalent to the following instruments:- RF generator, two audio generators, specialised tones generator, RF power meter, modulation meter, RF counter, AF counter, AF voltmeter, distortion meter, large screen digital oscilloscope, spectrum Analyzer and monitoring receiver. Distortion measuring filters, AF post demodulation filters and IF passband filters, are built in for inclusion in relevant measurement paths. The signal obtained from the demodulators, when in Tx test mode, is fed to an AF Amplifier and can be monitored on the built-in loudspeaker, on headphones connected to the accessory socket, or taken from the DEMOD OUT connector to other equipment. The monitor has a wide range of test capabilities including base station, mobile and transponder commissioning and servicing, radio telephone system and radio pager testing, as well as production testing to all of the above. The selection of a test mode configures the modules into set-ups ready for connection to the equipment to be tested and produces the appropriate set-up screen on the display. The set-up screen shows the settings of the active modules, records changes to settings as they are made and gives readouts of test results both digitally and on barcharts. The modules of the monitor can each be used to perform as individual test instruments. A hard copy of most screens can be made to a suitable printer using the screen capture feature. This is one of the functions accessed after pressing the [DISPLAY HOLD] key on the front panel. See Front panel layout, DISPLAY HOLD key, in Chapter 3. A memory facility allows instrument settings and test results to be stored within the instrument. With the memory card option fitted, these can be stored on memory cards. This also allows settings to be exchanged between instruments. The memory card option also includes a real time clock which provides date/time stamping to stored results and to screen-capture printouts. The RS232 control facility permits operation of the instrument by remote or automatic control as an alternative or supplement to the conventional front panel local control. IEEE 488.2 GPIB remote control is available as an option. RS232 and GPIB control facilities are detailed fully in the Programming Manual supplied. The test modes are outlined in the following descriptions, with interconnection diagrams showing the principles of the test procedures.

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Service Manual
Manual Type:
Service Manual
Pages:
546
Size:
14.18 Mbytes (14872454 Bytes)
Language:
english
Revision:
5
Manual-ID:
46882-310
Date:
2002 12 23
Quality:
Scanned document, all readable.
Upload date:
2020 12 30
MD5:
48aa3dc2d714700673403c9246efa240
Downloads:
881

Information

This manual provides servicing information to component level for the Communications Service Monitors 2944 and 2945A and for the Avionics Communication Service Monitor 2946A. Chapter 1 Technical description This includes block diagrams and detailed board circuit descriptions. The circuit descriptions refer directly to the servicing diagrams contained in Chapter 7. Chapter 2 Access and layout Refer to this chapter for board and unit access, service policy and routine safety testing and inspection. Chapter 3 Adjustment and calibration Refer to this chapter for information on user calibrations, Software calibrations and hardware adjustments. Chapter 4 Initial repair This chapter contains information regarding simple fault-finding. Chapter 5 Fault finding The information in this chapter is in now chart form, giving several levels of fault diagnosis information from very basic repair down to board component level. Chapter 6 Replaceable parts Contains board component parts and a section on miscellaneous (including mechanical) parts. Chapter 7 servicing diagrams Contains interconnection drawings, board circuits and board component layout drawings. Appendix A Module identification Contains cross-references for module designations and IFR part numbers.

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User Manual
Manual Type:
User Manual
Pages:
249
Size:
2.16 Mbytes (2267487 Bytes)
Language:
english
Revision:
3
Manual-ID:
46882-311
Date:
2000 03 27
Quality:
Electronic document, no scan, very well readable.
Upload date:
2020 12 28
MD5:
e9bc0bae35e3c4630362de3abe8567e2
Downloads:
260

Information

About this manual This manual explains how to use the Communications Service Monitor 2945A. It applies to instruments fitted with main Software version 4.xx and cellular Software version 4.xx. Intended audience People who need to test mobile radio systems and associated equipment. Structure Chapter 1 General information and performance specification. Chapter 2 Gives installation instructions, including connection of peripheral equipment. Chapter 3 Operating instructions. Setting up and use. Chapter 4 Brief technical description. Chapter 5 Acceptance testing procedure for the Service Monitor. Appendix A Use of the Directional Power Heads, 54421/002 and 54421/003. Appendix B Use of the Light-weight Directional Power Heads 54421/016 and 54421/018.

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