HP 8901A Product Overview

Also see for 8901A: Specifications

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product overview

HHP 8901A Modulation Analyzer150 kHz to 1300 MHzProduct Overview Outstanding signalcharacterizationMobile RadioThe HP 8901A Modulation Analyzer combines all the capabilitiesnecessary for making accurate transmitter measurements. Itcan be used in making all the tests listed below. It can also beused to test modules and subassemblies from either the trans-mitter or receiver. For reliability, input power protection reducesthe chance of accidentally damaging the modulation analyzer byconnecting it directly to a high power transmitter.• Carrier power• Carrier frequency and stability• AM depth• FM deviation• Hum and noise• Incidental AM or FM• Modulation limiting- Instantaneous- Steady state• Audio frequency responseMaintenance and MetrologyAccurately measuring modulation has long been a problem formetrology laboratories. The HP 8901A Modulation Analyzerhelps solve this problem two ways. First, it provides an extremelyaccurate method of measuring AM depth and FM deviation, andit recovers the modulation with little degradation for makingmeasurements such as modulation distortion. Second, the optionalcalibrators provide a precise modulation source for calibration.There are many metrology and maintenance uses for the modula-tion analyzer. They include:• Signal generator calibration• Modulation calibration standard• VCO and VCXO characterizationApplicationsFrequencyRange: 150 kHz to 1300 MHzResolution:10 Hz below 1000 MHz,100 Hz above 1000 MHzInput Level:Automatic Mode: −20 dBm to+30 dBmManual Mode: Typically−60 dBm to +30 dBmPowerDisplay: Peak envelope powerRange: 1 milliwatt to 1 wattAccuracy: Typically ±1.5 dBInput Power Protection:>25 wattsModulationFrequency ModulationRates: 20 Hz to 200 kHzDeviations: to 400 kHzAccuracy: ±1% of reading ±1 digitfor rates 30 Hz to 100 kHzAmplitude ModulationRates: 20 Hz to 100 kHzDepths: to 99%Accuracy: ±1% of reading ±1 digitfor rates 50 Hz to 50 kHz anddepths >5%Phase ModulationRates: 200 Hz to 20 kHzDeviations: to 400 radiansAccuracy: ±3% of reading ±1 digitMeasurements **All parameters describe performance in automatic operation or properly set manual conditions. Specificationsdescribe the instrument’s warranted performance. Supplemental characteristics (shown in italics) are intended toprovide information useful in applying the instrument by giving typical, but non-warranted, performance parameters.