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Sensormatic
SENSORVISION SYSTEMS
Video But No Dome Response / Control
What to check.
1.
Dome status.
2.
Data at J-Box.
3.
Inside dome.
a. boards and cables.
b. address.
4.
Data into dome.
5.
Pan, tilt.
What to do.
Check the dome # in question for the correct
dome type and condition. If the dome # is
incorrect, reset the dome.
For a new installation, check data wiring at P4
on the RS422 board on the dome.
Use a data tester to test the data line out of
the J-Box. Ensure that the LED status
indicators show good data at each data port. If
an LED indicates bad data, check the data path
back to the control box for improper wiring.
Make a visual inspection of the inside of the
dome. Ensure that the power and data cables
are properly connected and the boards are
properly seated.
Ensure that the dome is correctly addressed.
Use a data tester to test the data at pins 6
(data Lo) and 7 (data Hi). If data is not present
going into the dome, check the data path back
to the J-Box for improper wiring.
If data is present, replace the RS422 interface
board. If that does not solve the problem,
replace the CPU board. If replacing both
boards does not solve the problem, unplug the
slip-ring connector at JP4 from the CPU board
to ensure that the eyeball connection is not
loading down the system. If this does not solve
the problem, replace the chassis.
NOTE: Testing a chassis at a known working
location will isolate a bad chassis or a bad
connector/cable/J-Box. If a working dome fails
in the bad dome location, the problem is with
the connector/cable/J-Box.
See Q-25 and Q-26.
SENSORVISION SpeedDome
Q-21
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