Icom_IC-77_频率调制校准手册_2021

SECTION 5ADJUSTMENT PROCEDURES5-1 PREPARATION BEFORE SERVICINGREQUIRED TEST EQUIPMENTEQUIPMENTGRADE AND RANGEEQUIPMENTGRADE AND RANGEDC power supplyOutput voltage:13.8VDcAC millivoltmeterMeasuring range 10 mV-10 VCurrent capacity30 A or moreDC voltmeterInput impedance 50 kQ/DC or betterRF power meterMeasuring range:10-200wAmmeterMeasurement capability:1 A and 30 A(terminated type)Frequency range:1.8-30MHzImpedance:50QAudio generatorFrequency range:300-3000MHzSWRLess than 1.2:1Output level:1-500mWFrequency counterFrequency range:0.1-100MHzAttenuatorPower attenuation50 or 60 dBFrequency accuracy:1 pom or betterCapacity150 W or moreSensitivity100 mV or betterSpectrum analyzerFrequency range：At least90MHzRF voitmeterFrequency range:0.1-100MHzSpectrum bandwidth:+100 kHz or moreMeasuring range:0.01-10VFM deviation meterFrequency rangeAt least 30 MHzDigital multimeterInput impedance 10 MQ/DC or betterMeasuring range:0to±10kHzStandard signalFrequency range:0.1-100MHzModulation analyzerFrequency range At least 30 MHzgenerator (SSG)Output level:0.1uV-32mVMeasuring range:0-100%(-127to-17dBm)External speakerImpedance:80Distortion meterFrequency range:1kH土10%Max.input power:5wMeasuring range:1-100%OscilloscopeFrequency rangeDC-20 MHzMeasuring range:0.01-10VCW:ClockwiseCCW:Counterclockwise■CONNECTIONSpectrumanalyzerFM deviationAttenuatorStandard signalmeter50 or 60 dBgeneratorModulationanalyzerRF power meter200W/50QCAUTION:DO NOT connect theto [KEY]Keyersignal generator whiletransmitting.toD013.8to the[ANT]to [EXT SP]DC power supplyconnector13.8V/30AMicrophone connectorAC(Front panel view)millivoltmeter881C-77Pin 1MIC INPUTAudioSpeakePin 7 GNDgenerator-(Microphone-ground)PTTDownloaded byRadioManual.EUtoMC匈5-1