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The Aeroflex IFR 2948B Low Phase-Noise Wireless Communications Service Monitor comes with a full performance spectrum analyzer. The performance of the 2948B enables signal-to-noise measurements of better than 46 dB to be made on receivers with 12.5 kHz channel spacing. Stored settings may be recalled from internal memory or from a memory card allowing fast and straightforward set up. The spectrum analyzer provides spans from 100 Hz per division to 100 MHz per division and also has a fully adjustable reference level. The Aeroflex 2948B will measure 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 high power base stations can be measured directly. Measurement accuracy of better than 10% is guaranteed all the way down to 5 mW on the N-Type connector. 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. Full duplex operation is provided by the 2948B allowing testing of duplex radios as well as simultaneous testing of repeater transmit and receive paths. The 2948B provides extensive support for the various tone signaling systems used in Professional Mobile Communications such as DTMF, TONE REMOTE (Option), DCS and CTCSS. Analysis of audio signals, whether from the demodulated signal or the audio input direct, can be viewed for further inspection. The oscilloscope can either be combined with the measurement screen in the Tx, Rx or AF test modes or ‘zoomed’ to a full screen display. Options. Option 1 - 600 ohm Matching Unit. Option 2 - Analog Systems Card. Option 3 - High Stability OCXO. Option 4 - Parallel Interface. Option 5 - GPIB Interface. Option 6 - Memory Card Drive with real time clock. Option 8 - SSB Demodulator. Option 9 - Occupied Bandwidth Measurement. Option 10 - NMT Cellular. Option 11 - AMPS Cellular. Option 12 - TACS Cellular. Option 13 - MPT 1327 trunking. Option 14 - PMRTEST. Option 15 - EDACSTM Radio Test. Option 16 - EDACSTM Repeater Test. Option 18 - LTR Trunking. Option 21 - Demodulation Filters. Option 22 - POCSAG Decode. Option 23 - CCITT Filter. Option 24 - CMESS Filter. Option 26 - Tone Remote. Option 29 - Plus 2 Distortion Notch Filters board. Option 30 - Bail Arm and Front Panel Stowage Cover. Option 31 - IF Output Capability. Option 32 - Internal Battery.
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