Motorola HT 1000 Series - Page 25

Trunking High Speed Signalling
1. From the SERVICE menu, press F4 to select SIG-
NALLING 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 40-18.
6. Press F6 again to dekey the radio.
7. Press F8 to program the softpot value; press F10 to
return to the SIGNALLING menu.
MDC 1200
1. From the SERVICE menu, press F4 to select SIG-
NALLING alignment.
2. Press F4 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 40-16.
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.
The radio alignment procedure is now complete; the
radio may be disconnected and returned to service.
16
Table 40-18. Signalling Deviation
CHANNEL SPACING (KHZ) DTMF TRUNKING MDC
25 / 30 3.05-3.45 2.5-3.5 3.40-3.75
20 (VHF/UHF) 2.44-2.76 2.0-2.8 2.6-3.0
20 (821-824, 866-869) 2.44-2.76 2.0-2.8 2.6-3.0
12.5 1.55-1.85 1.40-1.75 1.640-1.875