Main Reference Frequency Adjustment; Transmit Power Adjustment - Standard Horizon Eclipse DSC GX1000S Service Manual

Alignment

Main Reference Frequency Adjustment

Setup the test equipment as shown below.
Sampling
Coupler
50-ohm
Dummy Load
Frequency
Counter
Set the channel to CH16.
Use the [ H/L ] key to set the transceiver to "LOW"
power.
With the PTT switch pressed, adjust TC1001 so that the
Frequency Counter reading is 156.800 MHz ±100 Hz.
VR1001
VR1002
L1027
VR1003
TC1001
JP1001
10

Transmit Power Adjustment

GX1000S
ANT
MAIN UNIT A
LIGNMENT
Setup the test equipment as shown below.
50-ohm
Dummy Load
Wattmeter
Set the channel to CH16.
Use the [ H/L ] key to set the transceiver to "HI" power.
With the PTT switch pressed, adjust VR1001 so that
RF output power is 24 W ±0.3 W.
Release the PTT switch, then set the transceiver to
"LOW" power by the [ H/L ] key.
With the PTT switch pressed, adjust VR1002 so that
RF output power is 0.8 W ±0.1 W.
Release the PTT switch.
P
OINT
Inline
GX1000S
ANT
L1022
L1022
L1012
L1010
TP1008