© MuxLab Inc.
Passive CCTV/GLI Hub Installation Guide
Page 16
Picture
Probable Causes Possible Solutions
Exceeded
distance
specifications
Lower grade
UTP cable is
introducing high
losses
Check DC loop resistance and
verify if distance spec is
exceeded
Reduce cable length or eliminate
high-loss components
Replace cable by higher grade
Wires reversed
on signal pair on
one side
Make sure that the wires on the
signal pair are not reversed on
one side.
Split pair
Check if the UTP pairs are split
and correct. Each signal pair
must be twisted.
Picture loses
color, faded or
weak
Lower grade
UTP cable is
introducing high
signal losses.
Use signal repeater for extended
distance or replace cable by
higher grade.
Wrong pin
configuration.
Check wiring
No power or
intermittent power
at camera
Distance
exceeded
Verify distance specifications for
remote power. Move power
closer to camera.
PTZ controls not
responding
Wrong pin config
Check wiring.
When contacting your nearest MuxLab dealer or MuxLab
Technical Support please have the following information ready:
•
Unit model number.
•
Cabling lay-out. Include model of camera and DVR used,
power supply voltage, camera wattage, cable length and type.
•
Description of problem.
•
List of tests performed.
