Instruction Manual

CMOR Dome
Videoswitch Page 20 Vc601i.doc
4 Configuring the Alarm Module
4.1 Normally Open or Closed Alarm Inputs
Set section the switch identified “NO/NC” as per the table below to select whether all the
alarm inputs are connected to sensors with normally open or normally closed outputs. “0”
represents OFF (down) and“1” represents ON (up). The default position in ON (up).
Termination TERM
Normally Open 0
Normally Closed 1
Note that if Normally Closed is selected, all unused alarm inputs must be linked to ground to
prevent alarms being continuously generated.
4.2 RS485 Termination
Set section the switch identified “TERM” as per the table below to select the termination of
the RS485 twisted pair input. “0” represents OFF (down) and“1” represents ON (up). The
default position in ON (up).
Termination TERM
OFF 0
ON 1
The termination switch should be ON if:
• The dome is the only one connected to the twisted pair
• The dome is the last one of several domes connected to the twisted pair
The termination switch should be OFF if:
• More than one dome is connected to the twisted pair and the dome is not the last in
the line.
4.3 Setting the alarm module protocol
• Set sections 1,2 and 3 switch as per the table below to select the required protocol.
“0” represents OFF (down) and “1” represents ON (up).
Protocol 1 2 3 4
Videoswitch VXP4 and BBV up-the-coax 0 0 0 0
Videoswitch VXP4 only 1 0 0 0
PelcoP 0 1 0 0
PelcoD 1 1 0 0
The alarm module protocol should be set to be the same as the dome protocol.