Polycom VSX 3000 Administrator's Manual page 174

Administrator's Guide for the VSX Series
Symptom
Video is in black and white.
VCR/DVD records in black
and white.
The people at your site
show up in silhouette in the
PIP.
Video from your site is too
dark or too light in the PIP.
The system does not
receive closed captions
correctly.
Graphics are displayed on
Monitor 1 at all sites even if
Monitor 2 has been
specified for content.
7 - 18
Problem
The monitor cable is not
connected properly.
The monitor cable is bad.
VCR video format setting
(S-Video or Composite)
does not match the VCR
connection.
The camera is pointing
toward a source of bright
light, such as a window.
Lighting at your site has
changed within the past few
minutes.
During calls, the camera
adjusts for the lighting at
five-minute intervals.
The modem is not
connected correctly, or is
not configured correctly.
At least one site does not
have dual-stream,
People+Content, or H.239
capability.
This can occur in calls to
older systems that do not
support this feature.
MCUs, which support this
feature, must have the
conference configured for
this feature.
Corrective action
Verify that the monitor is connected correctly
according to the manufacturer's instructions and the
setup sheet you received with the system.
Replace the cable.
Go to Admin Settings > Monitors > Monitors and
change the VCR setting.
If you use the composite video adapter (RCA to
mini-DIN), set VCR to Composite.
If it is practical to do so, have the call participants sit
in a location where there is no light source behind
them.
Otherwise, go to Admin Settings > Cameras and
select Backlight Compensation.
Pan the camera. It adjusts for the lighting whenever it
is moved.
Verify that the modem is connected correctly
according to the manufacturer's instructions and the
setup sheet you received with the system.
Go to Admin Settings > General Settings > Serial
Port and verify that RS-232 Mode is set to Closed
Caption.
Verify that the modem is configured for 8 bits, no
parity.
ViewStation owners can upgrade to the latest version
of software.
Configure the MCU for this feature.