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