23
Trouble Shooting
Problems
Possible Causes
Corrective Actions
1
No video signal;
No colour picture;
Pictures in irregular
shape.
The power rating of the
camera and /or the
transmission distance do not
match with the specifications
To follow “camera power
distance table” in Typical Wiring
section for the system setup.
2
Picture brightness
too bright, Video
loss or too dark.
The brightness / Sharpness
(Colour) control switches (dip
switches) are not put in
proper positions.
To set the brightness / Sharpness
(Colour) control switches (dip
switches) proper positions
3
Pictures with
irregular horizontal
lines interruption.
Either the Camera or CCTV
monitor is not grounded or
not properly grounded.
To make sure both Camera and
CCTV Monitor are properly
grounded.
4
The LED lights in
RJ45 sockets and
Power indicator are
on, but there is no
picture shown on the
monitor screen.
The signal processor video
output cable or socket is not
properly connected to the
DVR or Monitor.
To make sure the signal
processor video output cable or
socket is not properly connected
to the DVR or Monitor.
5
The monitor screen
shows unsteady
pictures when the
control keypad is in
operation.
Insufficient line current
supply to the PTZ camera.
To fit a Power Stabilizer
PS-10KU to the Mixer.
6
There is no
movement of the
PTZ Camera when
the control keypad is
in operation.
PTZ camera doesn't receive
any control data signal from
signal processor.
Connecting channel video
loss
To check the RJ45 Pug for
RS485 Data Controller is set on
Check camera wiring
7
There are some
moving horizontal
lines on the CCTV
monitor screen.
Due to potential differences
between the Camera side and
the Signal Processor power
point when Local Power is
provided.
To install a Ground Loop Isolator
PT-ISO together with the Mixer
to eliminate the ground potential
differences and stop the noise
and humming sound.
8
SP no Audio output
Mixer Microphone wiring
error or Microphone
unmatched. Or connecting
channel video loss
Check Microphone wiring or
using 2Y-Link Microphone
Check camera wiring.
9
No alarm output
Alarm input wiring incorrect
or alarm trigger signal
unmatchable.
Connecting channel video
loss
Check Alarm input wiring or
Alarm trigger normal open
Check camera wiring.