PictureTel Concorde 4500, Administrator'S Manual

Page: 125 / 250

Adjusting the Camera
5-25
c. Reduce the monitor volume control slightly, as necessary,
until you no longer hear any artifacts or squeaks.
d. Adjust the keypad volume control, as necessary, to maintain
an acceptable loudness.
7. Place a call as a final verification.
If participants at the far-end site hear an echo, reduce your
monitor volume control slightly.
Follow these guidelines:
a. After you have adjusted the monitor volume, do not change
the monitor volume setting. Use the keypad volume control,
if necessary, to change the volume. The echo canceler then
works properly.
b. Do not change the audio tone controls on the monitor.
Distortions could result and could affect the performance of
the echo canceler.
c. The echo canceler does not handle distortion. Use the
keypad volume control and decrease the volume until any
distortion is no longer evident.
Adjusting the
Camera You may need to adjust the pan-tilt-zoom (PTZ) camera white
balance to room lighting conditions, as well as adjust the focus.
Using menu screens, you can make the following adjustments:
❑
White balance to room lighting conditions
❑
Camera focus for full automatic or delayed (timed) automatic
operation
❑
Iris opening for normal (automatic), 1 f-stop closed, or 1 f-stop
open
F Y I
F.Y.I.
Because the echo canceler takes a few seconds of speech to
adapt to the room acoustics, you may hear an echo at Þrst.