Eneo EDC-4372 - Manual (Page 26)

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Connections
Connecting to the RS485/ 422
The dome camera can be controlled remotely by an external device or
control system,
such as a control keyboard, using RS485 half-duplex, RS422 full duplex
or simplex serial communications signals. Connect Marked Tx+, Tx- to
Tx+(Rx+) and Tx-(Rx-) of the RS485 control system.
If control system is RS422, connect Rx+(Tx+), Rx+(Tx-) and Rx+, Rx- of the
dome camera to Rx+, Rx- and Tx+, Tx- of the control device respectively.
If using a coaxitron control system the RS485/422 connection is not neces-
sary. All control signals are carried through the coaxial cable along with the
video signal.
Connecting Video out connector
Connect the video out(BNC) connector to the monitor or video input.
Connecting Alarms
AL1 to 8 (Alarm In)
You can use external devices to signal the dome camera to react on events.
Mechanical or electrical switches can be wired to the AL (Alarm In) and
GND (Ground) connectors.
See Chapter 3 — Program and Operation for configuring alarm input.
GND (Ground)
NOTE: All the connectors marked GND are common.
Connect the ground side of the Alarm input and/or alarm output to the
GND connector.
NC(NO)1 TO 4 (Normal Close or Normal Open : Alarm Out)
The dome camera can activate external devices such as buzzers or lights.
Connect the device to the NC(NO) (Alarm Out) and COM (Common)
connectors.