Troubleshooting - Polycom SoundStation VTX1000 Configuration Manual

CONFIGURING THE SOUNDSTATION VTX1000 FOR AUDITORIUM USE
STEP THREE: TRAIN THE PRESENTER
These are the key points for the presenter to remember.
Talk close to the microphone
Don't stand directly in front of any loudspeaker
Neither side should interrupt any more than necessary
CONCLUSION
While this configuration will not perform quite as well as when the VTX 1000 is operating
in its native environments (in particular, interaction will suffer somewhat), it is effective in
extending its usefulness on those occasions where a telephone conversation needs to be
shared with a larger group. In situations where this is a regular application, however, an
installed audio system such as the Polycom Vortex will yield better and more consistent
results.

TROUBLESHOOTING

Here are some typical problems, and what to do about them.
PROBLEM
Auditorium hears far-end
loudness pumping up and
down.
Auditorium hears far-end
loudness pumping up and
down.
VTX 1000 doesn't work
afterwards: lights OK but no
sound.
Buzz or hum on audio from
VTX 1000 into auditorium
Polycom, Inc.
CAUSE
Too much speaker sound
getting into microphone.
With the VTX 1000, this
causes "pumping" instead of
feedback oscillation, as the
VTX 1000 gates feedback..
Panel gains are being
changed during the call,
which keeps VTX 1000 echo
cancellers from adapting
correctly
Internal mics and speaker
are still turned off
Unbalanced cable from
AUX OUT is too long
SOLUTION
> Turn down gains
> Move talker away from
speakers
> Move far-end talker closer
to microphone
Leave panel settings alone
during the call
Turn on internal mics and
speaker (MENU -> AUDIO
SETUP)
Install direct box at VTX
1000 interface module and
use a balanced microphone
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