57
Squelch Attenuator
(12.5 kHz)
Alignment
From the MAIN MENU, press F2, F3 and then F4 to access this screen.
Rx Squelch Alignment is required every time the Controller Board or RF Board
is serviced or replaced. This screen allows you to adjust the squelch level
for each test mode frequency and adjust the RF level at which squelch
break will occur.
This procedure needs to be performed at multiple frequencies to allow
for proper alignment across the entire RF band. The RF band is divided
into frequency zones with a calibration point (value) in each zone.
Refer to your Radio Service Manual for the Squelch Attenuator (12.5
kHz) Alignment procedure.
Programming Procedure 1. Apply the appropriate RF signal to the radio.
2. Modify the Squelch Attenuator setting using the UP/DOWN arrow
keys.
3. Use the Tab key to move between frequency points.
4. Press F8 to save the new values.
Function Key Descriptions
F8 - PROGRAM VALUE Programs the selected value into the radio.
Field Definition
New Softpot Value This is the working squelch attenuator value for this frequency. The
status bar shows the relationship between this setting and the
minimum and maximum settings.
BCD
MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.
MCS Model:
...SQUELCH (12.5kHz)
SQUELCH (12.5kHz)
-----------------
Current
Frequency Value New Softpot Value
--------- ------- -----------------
136.0625 63 63
144.0625 63 63
154.0625 63 63
160.0625 38 38
167.5625 38 38
173.9375 38 38
177.9375 38 38
0 63
MIN |----+----+----+----+----+----+----+----+----+----+----+----X MAX
F1 F2 F3 F4 F5 F6 F7 F8 F9 F10
HELP PROGRAM EXIT
VALUE
!
Caution
This procedure should be attempted only by qualified
service personnel. Failure to perform alignment
procedures properly may result in seriously degraded
radio or system performance.
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