Vertex Standard LTR VX-2200 Service Manual page 16

Alignment
3. PLL Reference Frequency (Frequency)
Note: The "TX VCO Tune Voltage" alignment must be
done before this alignment is going to start.
Set the transceiver to CH1 (band center, wide devia-
tion) via the "Channel" box on the "Alignment" win-
dow.
Click the left mouse button on the "Reference Fre-
quency" button.
Click the left mouse button on the "Start" button.
Move the Slide Bar, as needed as, until the Frequency
Counter displays a frequncy in "481.100 MHz ±100
Hz".
Press the "OK" button on the window, the value of the
alignment for PLL Reference Frequency will be saved
in the radio.
G-4
4. RX Sensitivity
Note: The "RX VCO Tune Voltage" and "PLL Reference
Frequency" must be done before this alignment is going
to start.
Set the transceiver to CH1 (band center, wide devia-
tion) via the "Channel" box on the "Alignment" win-
dow.
Tune the RF output of the Radio Tester to 481.100 MHz,
then set the output level to +10 dBµ with ±3.0 kHz de-
viation @ 1 kHz tone modulation.
Click the left mouse button on the "RX Tune" button.
Click the left mouse button on the "Start" button.
Move the Slide Bar, as needed as, for maximum de-
flection of the "RSSI Level meter".
Press the "OK" button on the window, the value of the
alignment for RX Sensitivity will be saved in the ra-
dio.