Tait TM8100 mobiles Service Manual page 263

Task 15 —
Noise Muting
Selected
Table 10.5 Mute data
TM8100/TM8200 Service Manual
© Tait Electronics Limited November 2007
With noise muting selected, check the noise mute settings:
In the calibration application open the "Deviation/Squelch" page and
1.
click the "Squelch and Signaling Thresholds" tab.
Ensure that, under the "Squelch Thresholds" label, the settings in the
2.
"Country", "City" and "Hard" fields are what the Customer expects.
Open the "Raw Data" page and click the "Mute" tab.
3.
Compare the values in the "Mute Noise Readings" field with the
4.
required minimum and maximum values listed in
5. If the mute noise readings are correct, go to
receiver sensitivity. If they are not, go to
6. Recalibrate the mute and then check if the mute fault has been
removed.
7. If the fault has been removed, go to
has not, go to Task 1
Channel spacing SINAD (dB)
Narrow (12.5 kHz) 8
20
Medium (20 kHz) 8
20
Wide (25 kHz) 8
20
Step
"Final Tasks" on page
and check the receiver sensitivity.
Mute noise readings
(K5 band)
Minimum Maximum
1700 2000
200 450
1400 2100
150 850
3500 5600
1100 3100
Receiver Fault Finding
Table 10.5.
Task 1 and check the
6.
163. If it
Mute noise readings
(all other bands)
Minimum Maximum
1900 2300
250 500
3700 4200
1000 1500
5000 7300
2200 3700
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