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The HP 8656A programmable RF signal generator provides synthesized signals from 0.1 to 990 MHz. The 8656A offers a wide range of standard features, including 100 and 250 Hz resolution, full keyboard control, reverse power protection to 50W, and HP-IB programmability. Featuring AM and FM and simultaneous modulation with external modulating signals or internal 400 Hz and 1 kHz tones, the 8656A is ideal for in-channel receiver testing. Receiver channels are easily selected with the frequency increment feature. It has output level accuracy of ± 1.5 dB and precise output level resolution of 0.1 dB for increased measurement accuracy and settability. Specifications. Frequency Range: 100 kHz to 990 MHz (8 digit LED display). Frequency Resolution: 100 and 250 Hz. Spurious signals (<= +7 dBm output levels). Harmonics: < -25 dBc. Output Level range (Into 50 ohms): + 13 dBm to -127 dBm (3 1/2 digit LED display). Output Resolution: 0.1 dB. Output Absolute level accuracy: <=1.5 dB. Level flatness (100 kHz to 990 MHz): <= ± 1.0 dB at an output level setting of 0.0 dBm. Amplitude modulation depth: 0 to 99% to +7 dBm and 0 to 30% to + 10 dBm. AM Resolution: 1%. FM rate: internal 400 Hz and 1 kH z, ± 3%; external (1 dB bandwidth, ac coupled), 25 Hz to 25 kHz. FM Resolution: 100 Hz for deviations less than 10 kHz; 1 kHz for deviations greater than 10kHz. Option 001: High stability time base. Option 002: Rear panel input and output.
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