Tait TB8100, Руководство пользователя

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TB8100 Service Kit User’s Manual
Reciter Tests 173
Note:
The Unmute Output button does not provide audio to either
line out. Standby mode disables the required audio paths.
7. If desired, modify the receive frequency by clicking the up or down arrows.
(You can repeat this as often as you want.)
The End Test button turns into a disabled Starting Test button until the new
frequency has been tested. The form now displays the new values.
8. Click Stop Test when you are finished.
Testing Receiver Sensitivity
You can carry out a basic test of the receiver’s sensitivity without using test
equipment. The test only works if the receiver has a 50 ohm load and is not
receiving any RF signal. You can set this up by connecting up a test set and
switching its RF off.
1. Disconnect the antenna and connect a 50 ohm load.
2. Select Diagnose > Reciter > Receiver.
3. If necessary, alter the receiver’s frequency and channel spacing in the Set
receiver test frequency area.
4. Click
Test Rx Sensitivity
. The Result box indicates whether the receiver
passed or failed the test. If the receiver was receiving any RF, the test result
will be ‘fail.’
Measuring Received Signal Levels
You can measure the strength of RF signal that the base station receives across
a band of frequencies. A bar graph displays the results.