5
Base Unit
Transmitter Section
Connections
Preset
Place the Base unit in VCO/TX FREQ. ADJ mode in accordance with the procedure on page 3.
Alignment Procedure
step
Adjustment
Remarks
1
RT301
(TX Power)
Connect the Power Meter to the RF test point on the Base MAIN PCB.
Adjust RT301 for a -5.0dBm reading on the Power Meter.
2
CT1
(TX Frequency)
Connect the Frequency Counter to the RF test point on the Base MAIN
PCB. Adjust CT1 to make sure that the frequency is 926.897468 MHz.
3
RT3
(TX Modulation)
Press the “2” key to enter the TEST Mode 2. Connect the AF Generator
to the TEL Line Jack on the Base Main PCB. Make sure that the output
is 1 kHz 77.6 mV from the AF Generator.
Connect the Deviation Meter to the RF test point on the Base MAIN PCB.
Adjust RT3 to indicate ±8 kHz Dev.
Alignment Point Location on Base Main PCB and Base RF PCB
RF
Test Point
BASE Unit
Deviation
Meter
Frequency
Counter
Power
Meter
AC 120V
60Hz
AC
Adapter
AF GEN.
J1
DC IN
9V Jack
J3
TEL Line
Jack
RF
Test Point
1kHz 77.6mV
J3
TEL LINE Jack
J1
DC IN 9V Jack
BASE RF PCB
RT3
CT1
RF TEST POINT
Base Main PCB
RT301
Содержание FT-8509
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Страница 11: ...9 BLOCK DIAGRAMS Base Unit ...
Страница 12: ...10 Handset Unit ...
Страница 13: ...6 0 7 5 06 DVH 8QLW 0DLQ 45 44 ...
Страница 14: ...13 Base Unit ke NOTES 1 RESISTANCE VALUES ARE SHOWN IN OHMS UNLESS OTHERWISE NOTED K KILO OHM M MEG OHM ...
Страница 15: ... DQGVHW 0DLQ 48 47 ...
Страница 30: ...30 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Страница 31: ...31 Base Unit Key PCB ...
Страница 32: ...32 Handset Main PCB ...
Страница 33: ...33 WIRING DIAGRAMS Base Unit ...
Страница 34: ...34 Handset ...
Страница 35: ...35 EXPLODED VIEWS AND MECHANICAL PARTS LIST Base Unit SPEAKER KEY PCB RF MODULE BASE MAIN PCB ANTENNA ...
Страница 37: ...37 7 8 4 1 16 17 17 5 10 15 11 12 2 9 6 13 14 3 17 Handset RF MODULE HANDSET MAIN PCB ASSY ...
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