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The HP 70903A intermediate frequency (IF) section provides signal processing elements required for the spectrum analyzers, lightwave signal analyzers, and the GSM testers. It 1/8-width module for 70000 Modular Measurement System (MMS). The HP 70903A provides 100 kHz to 3 MHz resolution bandwidths. Maximize measurement speed using 10% incremental bandwidths. Wider bandwidths offer the most speed, whereas narrow bandwidths offer more resolution and sensitivity. The 10% incremental bandwidth steps offer you the best choice of bandwidth sizes. The bandwidths can also be changed in a 1, 3, 10 sequence. Calibrated logging amplifiers provide superb amplitude accuracy for the analyzers. Four detection modes are available to properly display a variety of signals. Auxiliary video output: BNC (f), 0-1 V, 1 kohm (nominal), front panel. 21.4 MHz IF output (linear): BNC (f), 50 ohm, 1.5:1 VSWR (nominal), front panel. Output power: -15 dBm nominal with -10 dBm RF input, 0 dB attn and -10 dBm reference level. Logged 8MB (m) logarithmically related to RF input, rear panel. Linear AGC Video Leveled output: 1 V, 50 ohms, 8MB (m) (nominal). Distortion (-30 dBm input, 90% AM, Fmod = 10 kHz): <8% THD. AGC attack time (periodic signals): 30 us. AGC decay time (periodic signals): 300 ms.
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