Noise Muting Selected; Mute Data - Tait TM9100 Service Manual

With noise muting selected, check the noise mute settings:
Task 15 —
Noise Muting
Selected
1.
2.
3.
4.
5.
6.
7.
Table 10.4 Mute data
Channel spacing SINAD (dB)
Narrow (12.5 kHz)
20
Medium (20 kHz)
20
Wide (25 kHz)
20
240 Receiver Fault Finding
In the calibration application open the "Deviation/Squelch" page and
click the "Squelch and Signaling Thresholds" tab.
Ensure that, under the "Squelch Thresholds" label, the settings in the
"Country", "City" and "Hard" fields are what the Customer expects.
Open the "Raw Data" page and click the "Mute" tab.
Compare the values in the "Mute Noise Readings" field with the
required minimum and maximum values listed in
If the mute noise readings are correct, go to
receiver sensitivity. If they are not, go to
Recalibrate the mute and then check if the mute fault has been
removed.
If the fault has been removed, go to
has not, go to Task 1
Minimum noise value
8 1900
250
8 3700
1000
8 5500
2200
Task 1
Step 6.
"Final Tasks" on page
and check the receiver sensitivity.
Mute noise readings
Maximum noise value
2300
500
4200
1500
7300
3700
© Tait Electronics Limited August 2005
Table 10.4.
and check the
147. If it
TM9100 Service Manual