JVC VN-C3U - V-networks Pan/tilt/zoom Camera Instruction Manual page 19

Out port setting includes the following settings:
OFF/ON: Determine whether or not an alarm is to be output.
Output value: Determine whether the High or Low signal will be output
when an alarm occurs. Enter the time for continuous signal output of
selected output value (High or Low) in the text box below.
Example: High 100ms
The High signal will be output for 100ms. After that, the output
value will change to Low.
Initialization: Determine whether or not the alarm signal will be output
one time when the power is turned on.
Set the values of Out port setting in accordance with the device to which
the output is to be sent.
Retry: Determines the number of retries (1 - 3) to be made when alarm
input arrives.
Alarm force output: Press the Output button for compulsory alarm output
from the camera alarm Out port in accordance with the current alarm Out
port settings. This can be used for checking devices connected to the output
port.
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