TN182 Battery Level Reporting and Remote P25 Test Tone
MT-4 Radio Systems
TECHNICAL NOTES
Page 6 of 8
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12. Turn on the Battery Level Reporting and click program if it is not already on.
The following values are a good starting point
5 : Detection Threshold for First Harmonics
100: Input Audio Sample Gain (Narrow Band)
100: Input Audio Sample Gain (Wide Band)
Figure 5: Receiver Battery Level Reporting
13. Use the subscriber to transmit each DTMF tone. As an Option you can have an analog communication test
monitor the subscriber at the same time with the demod output connected to one of the oscilloscope channels.
14. Figure 6 shows what the output at Pin Z24 looks like when it is tuned correctly for a particular subscriber.
A single pulse will correspond to each burst of diff erent DTMF tone.
Figure 6: Oscilloscope showing DTMF output on Pin Z24 (Good Tune)
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