TB8100 Service Kit User’s Manual Reciter Tests 177
The Digital inputs area displays the current settings of digital inputs ( active
(red LED) and inactive
(gray LED). You can also view the current state of the
Tx Key input.
Testing Hardware Channel Selection
If the channel that the base station operates on is to be selected by an external
channel switch, you can verify that the base station correctly interprets the
switch’s channel selection.
1. Select Diagnose > Reciter > Digital I/O.
2. Using the channel switch, select a channel.
3. Check that the Hardware channel number box displays the expected
channel number. (0 means that the channel is defined by software.)
4. If there is a discrepancy, check that the correct channel selection option
(Binary, BCD
, or invert) is selected in Configure > Base Station > System
Interface.
Testing Digital Outputs
You can toggle any digital output line or the Rx Gate output line between
active
and inactive. Use this test to make sure that the output is working and to
check that any equipment attached to that output responds as intended.
To test a digital output
1. Select Diagnose > Reciter > Digital I/O.
2. Click Start Test. This enables the Toggle buttons in the Digital Outputs
area. This area now displays the output states as they were when you started
the test.
3. Click the digital output’s Toggle button to change its state.
When the output is activated, its LED displays Green. (If the output is not
present on the system interface board, an error message appears.)
4. Check the response of any attached equipment.
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