Codan-radio MT-4E Analog and P25 Digital - Maintenance Guide Manual do Utilizador descarregar pdf (Página 60)

MAINTENANCE GUIDE | MT-4E ANALOG & P25 DIGITAL RADIO SYSTEMS

Chapter 5: Codan Radio System TestingPage 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.

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Codan-radio MT-4E Analog and P25 Digital - Maintenance Guide Manual do Utilizador Página 60