HP 8901A Specifications

HHP 8901A Modulation Analyzer150 kHz to 1300 MHzTechnical Specifications Outstanding signalcharacterizationAll parameters describe performance in automatic operation orproperly set manual conditions. Specifications describe theinstrument’s warranted performance. Supplemental characteris-tics (shown in italics) are intended to provide information usefulin applying the instrument by giving typical, but non-warranted,performance parameters.RF InputFrequency Range: 150 kHz to 1300 MHz.Operating Level:150 kHz to 650 MHz: 12 mV rms (−25 dBm) to 7 V rms(1 W peak ).650 MHz to 1300 MHz: 22 mV rms (−20 dBm) to 7 V rms(1 Wpeak ).Supplemental CharacteristicsTuning: Automatic, track (frequencies >10 MHz),manual frequency entry.Acquisition Time (automatic operation): ~1.5second.Input Impedance: 50Ω nominal.Maximum Safe Input Level:AC: 35 V rms (25 W for source SWR <4)DC: 40 VFrequency ModulationRates:150 kHz to 10 MHz: 20 Hz to 10 kHz.10 MHz to 1300 MHz: 20 Hz to 200 kHz 1.Deviations:150 kHz to 10 MHz: 40 kHz peak maximum.10 MHz to 1300 MHz: 400 kHz peak maximum 1.Accuracy:2250 kHz to 10 MHz: ±2% of reading ±1 digit, 20 Hzto 10 kHz rates.10 MHz to 1300 MHz: ±1% of reading ±1 digit, 50 Hzto 100 kHz rates.±5% of reading ±1 digit, 20 Hz to 200 kHz rates.Demodulated Output Distortion:3400 kHz to 10 MHz: <0.1% THD, deviations <10 kHz.10 MHz to 1300 MHz: <0.1% THD, rates anddeviations <100 kHz.AM Rejection (for 50% AM at 400 Hz and1 kHz rates):2 <20 Hz peak deviation measuredin a 50 Hz to 3 kHz BW.Residual FM (50 Hz to 3 kHz BW): <8 Hz rms at1300 MHz, decreasing linearly with frequencyto <1 Hz rms for 100 MHz and below.Supplemental CharacteristicsMaximum Deviation Resolution:1 Hz, <4 kHz deviation.10 Hz, 4 kHz to 40 kHz deviation.100 Hz, 40 kHz to 400 kHz deviation.Resolution: Is increased one digit with 750μsde-emphasis and pre-display on.Demodulated Output Distortion: 150 to 400 kHz;<0.3% THD, deviations <10 kHz.Detectors: + peak, - peak, and average (rms sinewave calibrated).Demodulated Output Across an Open Circuit(600Ω output impedance): 41 mV/Hz when resolution is 1 Hz.0.1 mV/Hz when resolution is 10 Hz.0.01 mV/Hz when resolution is 100 Hz.Stereo Separation (50 Hz to 15 kHz): >47 dB.Phase ModulationCarrier Frequency: 10 MHz to 1300 MHz.Rates: 200 Hz to 20 kHz.1 Maximum rate 20 kHz and peak deviation 40 kHz with 750 μsde-emphasis filter.2 Peak residuals must be accounted for in peak readings.3 With 750 μs de-emphasis and pre-display “off,” distortion is notspecified for modulation autopilots >4 V peak. This can occur nearmaximum deviation for a measurement range at rates <2 kHz.4 For optimum flatness, cables should be terminated with theircharacteristic impedance.

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