Rose electronic Crystal View - Manuel (Page 38)

TROUBLESHOTING
CrystalView Installation and Operations Manual
32
A constant vertical wobble appears down the screen.
•
The CAT-5 cable connecting the Local and Remote Units could be
located too close to a strong power source. Reroute the cabling if
possible.
•
If interference is from strong signals from a nearby broadcast
transmitter, a beat pattern will appear. Change the vertical refresh rate
on the monitor slightly, such as from 60Hz to 70Hz.
Picture on monitor is black and white, not color.
•
The Video cable was not attached to the PC when it was booted.
Reboot the PC.
Microsoft Windows or NT will only boot into low-resolution
graphics mode.
•
If your graphics card supports VESA DDC (Display Data Channel),
configure the graphics driver by explicitly indicating which make and
model of monitor you have rather than by using DDC.
No sound at the remote units speakers or headphones.
•
Audio cable loose or defective.
•
Audio cable in the wrong connector.
•
Sound card “Line Out” muted.
•
No sound at the CPUs speakers when using a Microphone on
the remote unit.
•
Microphone cable in wrong connector.
•
Sound card “MIC” input muted.
•
Microphone signal not amplified; increase sound card amplification by
20db. Add “MIC” jumper on remote units daughter board to increase
signal. Do not add this jumper is the microphone is already a powered
microphone.