Testing The Digital Audio Connections - Townshend Computer Tools DAT-Link User Manual

2.7 Testing the DAT-Link
4. During the test, the red light on the top of the transmitter should ash.
After a few seconds the output of the computer should look something like this:
Aim DAT-Link remote transmitter at DAT-Link sensor.***..*
Loopback Passed
If this test fails, make sure that the remote transmitter is properly connected and
DAT-Link
aimed at the . If the failure persists contact your

2.7.3 Testing the Digital Audio Connections

The three pairs of digital audio input/outputs can be tested using the
program. This program generates a test signal on the outputs and then veri es
that the incoming signal matches the test signal. This program uses the NetAudio
server allowing it to be used from any host on a local area network. Unlike
and , the NetAudio server must be running before using this program.
rctrain
For example, to test the SPDIF digital connections, follow these steps:
1. Connect a cable between the SPDIF inputs and outputs. The cable required
has phono-type connectors on both ends.
2. If it is not already running, start the NetAudio server with the command:
netaudiod &
3. Run the test program:
naloop -i SPDIF
This will run the loopback test at each of the three possible sampling rates: 32,000,
44,100, and 48,000 samples/second for 10 seconds each. During the test, the Lock
light on the front of the
a valid input. If everything is connected correctly, the following output will be
displayed:
Loopback test using RCA input
Looptest (LR) at 44100 samples/sec for 10 seconds
Passed
Looptest (LR) at 32000 samples/sec for 10 seconds
Passed
Looptest (LR) at 48000 samples/sec for 10 seconds
Passed
Total of 0 error condition(s)
DAT-Link
should come on indicating that it is receiving
43
DAT-Link
supplier.
naloop
dltest