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DTMF Transmit
Deviation
From the MAIN MENU, press F2, F4 and then F2 to access the DTMF
TRANSMIT DEVIATION screen.
DTMF deviation should be checked every time the radio is serviced and must
be adjusted whenever the Controller Board or RF Board is replaced. It is also
required following Modulation balance and Modulation Limit (VCO or
Reference) alignments.
Note: All radio compensation/deviation adjustments must be
made before adjusting DTMF deviation.
Refer to your Radio Service Manual for the DTMF Transmit Deviation
Alignment procedure.
Programming Procedure 1. Press F6 to key up the radio. (The radio’s RF output must be
terminated into a 50 ohm load.)
2. While transmitting, modify the DTMF Attenuator setting using
the UP/DOWN arrow keys.
3. Press F6 to de-key the radio.
4. Press F8 to save the new values.
Function Key Descriptions
F6 - TOGGLE PTT Alternately keys and de-keys the radio being serviced.
F8 - PROGRAM VALUE Programs the selected value into the radio.
Field Definitions
New Softpot Value This is the working DTMF Attenuator value. The status bar shows the
relationship between this setting and the minimum and maximum
settings.
BDB
MOTOROLA Radio Service Software Use UP/DOWN Arrows To Adjust Softpot.
MCS Model:
...DTMF TRANSMIT DEVIATION
DTMF TRANSMIT DEVIATION
-----------------------
Frequency Current Value
--------- -------------
136.01250 21 New Softpot Value..... 21
Transmitter..Off
0 31
MIN |----+----+----+----+----+----+----+----X----+----+----+----| MAX
F1 F2 F3 F4 F5 F6 F7 F8 F9 F10
HELP TOGGLE PROGRAM EXIT
PTT 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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