Generating An Audio Output - Tait TB8100 User Manual

Digital I/O Tests
TB8100 Service Kit User's Manual

Generating an Audio Output

The reciter can output an audio test tone at one of three pre-defined
frequencies. You can use this to test the reciter's ability to put audio on its
output lines or to set up and configure the interface from external equipment
to the base station. The audio is output at a nominal 0 dBm.
1. Select Diagnose > Reciter > Audio I/O.
2. In the Output area, specify which line out will carry the output.
3. Click Start Test.
4. View the Audio Output gauge and check that the measured level is close
to 0 dBm (balanced line out) or 0.8 Vpp (unbalanced line out).
5. Click Stop Test or return the base station to Run mode to end the test.
The Digital I/O form (Diagnose > Reciter > Digital I/O) lets you work with
digital inputs and outputs. You can view the current state of all digital inputs
and toggle any digital output to help you test any equipment connected to it.
The Channel switch area indicates the channel number that is currently set by
external equipment using the channel select lines on the system interface. If the
area is disabled, this is because external channel selection is disabled (Configure
> Base Station > System Interface.)
The Digital outputs area lets you toggle any digital output between
LED) and inactive (gray LED). You can do the same to the Rx Gate output.
The Digital inputs area displays the current settings of digital inputs. You can
also view the current state of the Tx Key input.
active (red
Reciter Tests 155