Texas_Ranger_TR696F_ENG维修说明书手册含电气原理图

22-12-11Alignment Procedures for Ranger Communications TR-696F SSB CB Ra...TECHNICAL SUPPORTAlignment ProceduresTexas Ranger TR-696F SSB BaseDownloaded from www.cbradio.nlPLL Alignment Transmitter Alignment Receiver AlignmentEquipment required for Alignment procedure:.DC Power Supply(13.8 Vdc.20A.Frequency Counter-100 MHzRF Signal Generator-100 MHzRF Wattmetter 25~60 MHz,Automatic Distortion Meter100W)Oscilloscope (50 MHz),with X10Digital voltmeter or Multimeter.probeAutomatic Modulation Meter.·SINAD MeterAudio Signal Generator50 dummy loadDigital voltmeter or Multimeter.To view proper test equipment setup for both the receiver and transmitter portion ofthe alignment procedures,please see this drawing Test Setup.After viewing,press "back"to return to this page.To view Main PCB Adjustment Location of adjustment points,please see this drawingTR-696F SSB Main PCB.After viewing,press "back"to return to this page.The following steps are required to re-align the TR-696F SSB Base Station.Caution:Alignment should only be attempted by personnel trained in RFproduct testing and alignment.PLL Synthesizer Alignment:1.VCO Voltage:Disconnect the "short PCB"from TP7,TP8,and TP9.Set radio to CH 1 AM RX mode,set the Clarifier setting to 12 o'clock,Adjust L14 for 2.5 Vdc 0.1.Connect ocilloscope to TP2Adjust L15 for maximum output.Set radio to CH 1 AM RX mode,connect frequency counter to IC3 Pin 8).Adjust VC1 to 10.2400 MHz 20Hz.2.AM Frequency:Set radio to CH 1 AM RX mode,connect frequency counter to TP3.Adjust L20 to 16.27000 MHz+20Hz.3.USB Frequency:Set radio to CH 1 USB RX mode,connect frequency counter to TP3.Adjust L21 to 16.6750 MHz+20Hz.4.LSB Frequency:Set radio to CH 1 LSB RX mode,connect frequency counter to TP3.Adjust L22 to 16.27750 MHz 20Hz.www.rangerusa.com/align696ssb.html1/4