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Portable / Transmitter
Test Equipment Required and Connections
• Oscilloscope, 100MHz
• Frequency Counter
PORTABLE
Batt Terminal
DC Power Supply
2.4V
Preset
Turn Power On (Connect battery) while depressing " æ " and " # " keys. A beep will be heard. Press the " 1 " key,
then the TX Mode is entered (CH1).
Alignment Procedure
Step
Adjustment
Set the digital voltmeter at the test point of TX VCO, then adjust L506 to indicate DC
1
L506
0.8V ±0.05V.
Connect the frequency counter across a 50-ohm dummy load to RF test point. (See
!
2
page 25) Make sure that the frequency is 48.760 MHz ±1500Hz.
Alignment Point Location on Main PCB
• Dummy Load, 50-ohm
• DC Power Supply, 2.4V
Dummy Load
(50-ohm)
RF Test
Point
Oscilloscope
Frequency Counter
Digital Voltmeter
Remarks
5
RF Test Point
TX VCO Test Point
L506
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