Shuttle SDV-3540, Service Manual

Page: 8 / 36

07
ADJUSTMENT
Equipment Required
>AM/RF signal generator
>Oscilloscope
>Solid-state voltmeter (SSVM)
>Frequency counter
>Regulated DC power supply
>DC digital voltmeter
>Distortion meter
AM /RF ADJUSTMENT
AM/RF and RF Alignment Using AM Signal Generator
Note : Press the radio power switch to turn on the radio. Signal generator
output must be kept as low as possible to avoid overload and clipping.
Setup
Generator
Coupling Generator Display
Setting Indicator
Coupling Adjust ment Remarks
RF Signal
generator
to antenna
receptacle 600 KHz
Int 1 KHz
30% mod.
Output
74 dB/uV 600
Khz SSVM
across
speaker C1 Adjust
AF output
power for
maximum
RF
Cont.
Signal
generator
to
antenna
receptacle 1400 KHz
Int 1 KHz
30% mod.
74 dB/uV
1400
Mhz
SSVM
across
speaker
L3
Adjust AF
output
power
maximum