|Marconi 2965 Communications Test Set|
|Group||Communications Test Set|
|Description||RADIO TEST SET|
Introduction The Radio Test Set 2965 provides a comprehensive measurement system for ail types of mobile radio testing applications, including personal mobile radio (simplex and duplex) and cellular systems. It is suitable for making high performance radio system measurements in research and development, production and maintenance. A high-performance, full-span RF spectrum analyzer with tracking generator is provided. This has features to enable component and sub-unit testing in addition to precision transmitter measurements. A 20 Hz to 40 kHz AF spectrum analyzer is provided to ensure total measurement capability. The large, bright display has soft keys at each side and beneath it. With the logical layout of the dedicated keys, this allows the many types of measurements of which the test set is capable to be carried out quickly and easily. An important operating feature is the ability to use several forms of automatic control and interfacing standards. These include IE E E 488.2 and RS-232 remote control as well as a parallel printer port. Features The main facilities and features of the test set are listed below. These and the many minor features are explained in the operating instructions at the appropriate points. 1 GHz signal generator The 2965 contains a high-performance signal generator with an oven-controlled crystal oscillator reference which has an ageing rate of less than 2xl0-7/year. It has a fast switching speed and a usable output up to 1.1 GHz. The maximum output is +13 dBm with an accuracy of ±1.5 dB. Comprehensive LF generators There are three modulation and three audio sources internally. These can generate signals between 20 Hz (modulation) or 1 Hz (audio) and 20 kHz in addition to signalling tones and data. The souses can be combined to produce a single source with range of 1 Hz to 100 kHz. Duplex operation There is provision for simultaneous measurements on a transmitter and a receiver with no limit to the frequency offset between them. Broad-band power meter There is an accurate power meter for measurements over the range 1 mW to 150 W with an accuracy of ±7%. The accuracy is traceable to international standards. Selective power meter Selective power measurements are possible with a sensitivity of -90 dBm. This allows power measurements to be made on selected channels with multiple signals present. 50 W continuous power rating The test set can handle up to 50 W continuous power on its N-type connector RF in/out port and up to 150 W for short periods of time. RF power protection The sensitive TNC connector RF in/out port is protected from accidental overloads up to 10W. This avoids unnecessary repair bills and wasted time. Full span spectrum analyzer There is a full-span spectrum analyzer to 1 GHz with centre-span and 80 dB dynamic range. The spurious and harmonic performance of a radio can be measured with auto and user-selected resolution bandwidth. Tracking generator This is operative over the full range of the spectrum analyzer. The tracking generator has a variable output level. Measurements can be made on filters and duplexers and in RF circuit development applications. Additionally, offset sweep is available for mixer and IF testing, for both up and down conversions. Doubler (x2) and divider (4-2) functions are also available. Fast audio analyzer There is a comprehensive analyzer for audio input and demodulated R F input signals up to 40 kHz with a minimum span of 50 Hz and a dynamic range of 60 dB. Because it uses an FFT, harmonic and spurious analysis can be performed very quickly. Two markers with full annotation are provided. A stepped audio signal is available up to 20 kHz for audio circuit analysis. 500 kHz digital storage oscilloscope There is an oscilloscope that is operative up to 500 kHz. It can be used to look at the demodulated audio signal. The trace can be stored and the results can be read over the bus or printed out. There are two markers with full annotation for measuring rise and fall times. Built-in multimeter There is provision for measuring voltage, current and resistance, and for continuity testing. The multimeter also has the advantage that it can be controlled over the bus, so can be included in an automatic test system.. Comprehensive range of demodulation and audio filters A 300 Hz to 3.4 kHz band-pass and 300 Hz, 5 kHz and 20 kHz low-pass filters are provided. In addition to these, CCITT and С-message (CM ESS) psophometric filters are provided. Rx=Tx Key , This is used tcf set the signal generator frequency to match the transmitter frequency automatically. This saves time and effort when making simplex radio measurements. A duplex offset can also be set for when the transmitter and receiver frequencies are different. Channel key It is possible to set up the frequency of the first channel and the channel spacing. Then, instead of having to set a particular frequency, a channel number can be entered.
These manuals are available for the above equipment:
|Marconi -- 2965 -- User Manual|
|Manual Type||User Manual|
|Size||13.47 Mbytes (14121929 Bytes)|
|Date||19 October 1995|
|Quality||Scanned document, reading partly badly, partly not readable.|
|Upload date||05 June 2016|
|Downloads||61 since 05 June 2016|
This manual explains how to use the 2965 Radio Test Set. It applies to test sets fitted with version 5 Ax software. With the exception of the section User options in Chapter 3, references are made to factory preset settings, prior to any customisation. Intended audience People who need to test radio systems and associated equipment. Structure Chapter 1 Provides general information concerning the test set’s features, performance, and accessories Chapter 2 Installation instructions Chapter 3 Operating instructions Chapter 4 Brief technical description Chapter 5 Acceptance testing Index
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