December 6, 2004 68P81083C20-D
6-8 Radio Tuning Procedure: Tuning Procedure
Signaling Deviation
NOTE: On radios with Conventional Select 5 Signaling software skip the next three steps and go to
“ DTMF Transmit Deviation (GVN6011 only)” on page 9 and “ Select 5 Transmit Deviation
(GVN6011 only)” on page 9.
DTMF Transmit Deviation
The DTMF Deviation Softpot is used to tune the FFSK signaling deviation.
1. From the SERVICE menu, press F4 to select SIGNALING alignment.
2. Press F2 again to select the DTMF softpot.
3. Press F6 to key the radio on the test frequency. The screen will indicate that the radio is
transmitting.
4. Measure the DTMF deviation on your service monitor.
5. Use the UP/DOWN arrow keys to adjust the DTMF deviation per Table 6-4.
6. Press F6 again to dekey the radio.
7. Press F8 to program the softpot value; press F10 twice to return to the SERVICE menu.
High Speed Deviation
1. From the SERVICE menu, press F4 to select SIGNALING alignment.
2. Press F3 to select the TRUNKING HIGH SPEED softpot.
3. Press F6 to key the radio on the test frequency. The screen will indicate that the radio is
transmitting.
4. Measure the TRUNKING HIGH SPEED deviation on your service monitor.
5. Use the UP/DOWN arrow keys to adjust the TRUNKING HIGH SPEED deviation per Table 6-
4.
6. Press F6 again to dekey the radio.
7. Press F8 to program the softpot value; press F10 twice to return to the SERVICE menu.
MDC 1200 Deviation
1. From the SERVICE menu, press F4 to select SIGNALING alignment.
2. Press F4 again to select the MDC softpot.
3. Press F6 to key the radio on the test frequency. The screen will indicate that the radio is
transmitting.
4. Measure the MDC deviation on your service monitor.
5. Use the UP/DOWN arrow keys to adjust the MDC deviation per Table 6-4.
6. Press F6 again to dekey the radio.
Channel Spacing
(kHz)
DTMF Trunking MDC
25 / 30 3.05-3.40 2.5-3.5 3.25-3.75
20 (VHF/UHF) 2.44-2.76 2.0-2.8 2.6-3.0
12.5 1.55-1.85 1.25-1.75 1.62-1.88
Table 6-4. Signaling Deviation
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