User's Manual

P25net Channel Controller Operations Manual
3-7
3.8 Radio Programming
The radio should be programmed according to the Application Note for that specific radio
model.
3.9 Transmit Calibration
Transmit calibration sets the narrowband deviation for the transmitter and verifies the
transmitter can be heard by a P25 receiver.
3.9.1 Equipment Set Up
Connect the equipment as shown in Figure 3-8.
Figure 3-8 Tx Calibration Setup
IMPORTANT NOTE: Make sure the test set has an internal 50 ohm attenuator rated for the
transmit power of the radio! It may be necessary to program the radio to a lower power for
the Tx calibration.
Aeroflex 3920
T/R
Radio Under
Calibration
Tx
P25CC
PC
PCCT Calibration
Software
CAT 5
50 ohm coax
P25CC Radio Interface Cable