PictureTel Concorde 4500, Administrator'S Manual, Page: 174 / 250

OBTAINING DIAGNOSTIC INFORMATION
7-20
and sounded on your system. These signals are local to your system
and are not digitized, compressed, or sent on telephone lines.
The audio is real time with no delay from speaking to broadcast.
This test veriÞes the operation of the near-end components and the
cables up to the codec. Thus, if this test runs without errors, your
hardware components, such as cameras and peripheral equipment,
are probably operating correctly and the problem is elsewhere.
To test the near-end interface electronics:
1. From the Diagnostics menu, choose View Near-End Tests.
2. Choose Run Video-Audio Loopback.
3. Make sure that the image appearing on the full screen is identical
with the PIP image.
4. Tap gently on the PowerMic rather than speaking into it.
If the images donÕt match or you canÕt hear sound, continue with
the next step.
5. Verify that all cable connections are correct and are securely in
place.
If the images donÕt match or you canÕt hear sound, continue with
the next step.
F Y I
F.Y.I.
The VCR audio input to the videoconferencing system is
looped back to the VCR audio output. This means that you
will not hear the VCR audio at the loudspeaker.
F Y I
F.Y.I.
You can also test graphic data with a video-audio loopback
when the system is conÞgured to display graphic data.
F Y I
F.Y.I.
The keypad volume and mute buttons are disabled during
this test.