Alinco_DR-600T_频率调制校准手册

■ADJUSTMENT1.VHF UnitITEMADJUSTMENTADJUSTMENT METHODPOINT(S)VCO VOLTAGE©L3,L10At 145.00MHz,adjust L3 so that the voltage of TP2 on B substrate is 3.0V.(VCO BOX)At 145.00MHz,pressing the PTT button,adjust L10 so that the voltage ofTP2 on B substrate is 3.4V.BASIC⑧TC1Pressing PTT button,adjust TC1 so that f-counter indicates 145.9500.1FREQUENCYkHz.TX POWER®TC2,3On"HI"position,pressing the PTT button,adjust TC2 and TC3 so thatthe power is maximum at 145.95MHz.POWERQ VR2 (HI)On "HI"position,turn VR2 for 45W output at 145.95MHz.OUTPUTVerify the lightining of the entire RF meter.③VR3(ID)On "MID"position,turn VR3 for 10W output at 145.95MHz.VR4(LO)On "LO"position,turn VR4 for 5W output at 145.95MHz.DEVIATION©VR3Enter the AF level of OdBm,then pressing the PTT button,adjust VR3 so that youobtain 4.8kHz/Dev at 145.95MHz and AF 1kHz.MIC GAIN©VR1Enter the AF level of-46dBm,then pressing the PTT button,adjust VR1 so thatyou obtain 4.0kHz/Dev at 444.95MHz and AF tkHz.SUBAUDIBLE©VR2Pressing the tone button at 145.95MHz.verify 0.6-0.8kHz/Dev at toneTONE DEVIATIONfrequency of 88.5Hz.DESCRIMINATOR®L5,6.7At 146.03MHz (T)and 60 dBy input,adjust L5,6,7 so that the distortionis minimum at 50mW.SENSITIVITY⑧L1,2,Adjust L1,2,3,4,8 so that 12dB SINAD sensilivity is the highest atL3,4.8146.03MHz.SQUELCH⑧VR2At 146.03MHz and cut SG output.Adjust squelch knob point by VR2S-METER®VR1At 145.03MHZand 3-dBu [EMF].adjust VR1 so that 2 in the S-meterbegins to light.900M57725R品@@o@○18○10可-10-