MTSX RSS SERVICE
68P81074C50 4-23
4.2.2.6 RECEIVE VCO CROSSOVER ALIGNMENT
RSS LOCATION: At the SERVICE MENU, press .
MOTOROLA Radio Service Software
MTSX Model:
...VCO CROSSOVER
Use UP/DOWN Arrows To Adjust Softpot.
VCO CROSSOVER
Current New
Frequency
Frequency
486.0250 486.0250
Transmitter. . . . . . .Off
F1
HELP
F2 F3 F4 F5 F6
TOGGLE
PTT
F7 F8
PROGRAM
VALUE
F9 F10
EXIT
Refer to your radio service manual for the receive VCO crossover alignment procedure. This procedure should
only be performed by qualified service personnel.
Receive deviation limit alignment is a way of correcting for deviation sensitivity versus RF frequency variations in
the VCO. The transmit and receive bands are divided into frequency zones with a calibration point (value) in each
zone. Compensation for each of these points must be checked and adjusted if the VCO is replaced.
FUNCTION KEY DESCRIPTIONS:
F1 - HELP provides useful information about the currently displayed menu, screen, or field.
F6 - TOGGLE PTT function will alternately key and dekey the radio being serviced.
F8 - PROGRAM VALUE function will program the selected value into the radio.
F10 - EXIT moves the display backward in the RSS tree, one screen or menu at a time.
New Frequency Field Definition
This is the VCO crossover softpot value for this frequency.
PROGRAMMING PROCEDURE:
1. Press F2 at the MAIN MENU. The SERVICE MENU appears.
2. Press F3. The RECEIVE ALIGNMENT MENU appears.
3. Press F7. The VCO CROSSOVER screen appears.
4. Press Tab to select the desired field, or press the desired function key (F1 - F10).
5. If a field is selected, press the up/down arrow keys to select choice or value.
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