Codan Radio MT-4E Analog and P25 Digital - Maintenance Guide - Manual (Page 60)

MAINTENANCE GUIDE | MT-4E ANALOG & P25 DIGITAL RADIO SYSTEMS
Chapter 5: Codan Radio System Testing Page 52
Ensure that the receiver and transmitter are connected to the repeater controller via the RJ45 cables
on the front panel. In some systems, the receiver and transmitter may be connected directly together
using the RJ45 cables.
Figure 5-40: System Analog Duplex Measurement
Demodulated Audio Frequency:
Check the COUNT meter on the meter panel. The demodulated audio should read the same as the
modulated input. The low and high alarms are set for 995 Hz and 1005 Hz.
Distortion:
The distortion meter will read demodulated audio and give you a complete repeater system distortion
reading. The High Alarm is set to 4.0 %.
Enter the System Distortion reading on the MT-4E Test Sheet.