4.
Select the Tx tone button to check the audio output. If the test is completed
successfully, the Done message is displayed.
Note
If the tone is amplitude modulated, and the tone level is not constant but increases and
decreases, the HDMI monitor is incompatible with the XT Codec Unit or not set properly.
Echo Cancelling on HDMI Monitors
An HDMI monitor might insert delay in the audio, causing an echo.
To improve echo canceller performance, you can use automatic or manual estimation of the
audio delay by the XT Codec Unit.
You can also generate the audio delay manually. Then you can train the echo canceller to use
the manual estimation as described in this procedure.
Procedure
Step 1
Access the SCOPIA XT Series web interface.
Step 2
In the Administrator Settings tab, select Admin Settings > I/O connections > Audio-Inputs >
Echo canceller page.
Figure 3-4
Configuring echo cancellation settings
Step 3
Set the Audio delay automatic estimation field to Yes.
Step 4
Set the Apply audio delay value field to Yes.
Step 5
Select Save.
RADVISION | Administrator Guide for SCOPIA XT4000 Series Version 3.0
Troubleshooting | 28
