25
Short-cut operation and specification of dome device
S.N.
Problem Description
Possible Reason
Solutions
Remarks
1
After power on,
No motion and no image.
Power cable is connected improperly
Fault of power PCB of dome device
slip ring power wires disconnected
Fault of main control board
Check if the power cable is
connected to power of AC24V
Change the power PCB
Change slip ring
Change main control board
Please follow the above
basic system wiring strictly
2
After power on, the dome
device rotate normally,
but no character nor image
display.
Character monitor switch is off
Improper connection between camera
and dome device
Switch on the character
monitor according to the menu
instruction, Replace a
FFC cable or a camera
About 45 second after
the dome device is
power on.
3
After self-test of the dome
device, menu cannot
be displayed
wrong operation
Fault of OSD control board
CALL up 90 preset position
Open OSD
Change OSD board
After self-test, the menu
can only be displayed
when there is image
display of the dome device
4
Distorted character or image
Interfered by exterior electronic signal
(noise) or the camera is directed to the
monitor screen
System wrong function
Grounding the dome device or
shut off the surrounding big
electronic devices
(electric, HF, signal
Generating)equipment,
or rotate the camera
Restart the dome device
Shielded cable should be
adopted for video cable
5
After power on, no self-test
and motor is locked
The system setting is start self-test after
receiving command and you can see
the video on the screen
Connect the controller and
set correct transmission
protocol and baud rate as well
as dome device address
There is character display
in normal circumstance
6
Cannot stop pan rotation
(rotate and stop
alternatively)
OSD board is not properly connected
with main control board or the
photoelectric switch is broken
Pan interrupt is not in due position
fix OSD board again, if the
problem still exits, then
replace the OSD board
Adjust the pan interrupt
Pan interrupt should be at
2/3 of the central slot
within photoelectric switch
7
After normal working, it
will rotate one circle when
being controlled
The system is checking the data again
It is normal event
If this happens Frequently
, please adjust the pan
interrupt or check if the
connection is too tight.
8
Vertical range is not within
90
±
2 degree with large
deviation
Fault occurs when the dome device is
in tilt movement. It may be caused by
obstacle of camera of other object,
which lead to early tilt movement
Check and adjust the
mechanical installation
9
Self-test is normal, but
cannot control
Wrong setting
Improper connection of control cable
Set the protocol, baud rate
and address of dome device
Check the circuit
10
Insensitive control of dome
device
Overload or too long distance
transmission
Improper contact of control cable
slip ring is damage
RS-485 protective discharge arresters
broken
Add driver
Check the circuit
Replace slip ring
Change 485 protective
discharge arresters
Mostly happen in the
connection
11
Call out function fails
System failure caused by noise
interference
Restart the dome device
12
Auto action of dome device
periodically
No transmission auto “call back”
function is set to the dome device
Called this setting
13
One dome working well
while the other does not
under identical operation
Something wrong with the setting or
wiring
check the setting and wiring
again
Summary of Contents for VSD-261P
Page 33: ...29 ...