l-com 16-CH User Manual page 17

For 4-line devices (such as keyboard)
DVR
GND
TxD-
TxD+
RxD-
RxD+
For PTZ cameras
DVR
GND
TxD-
TxD+
RxD-
RxD+
MAIN-AUX monitor
Please refer to the diagram below to connect the MAIN-AUX monitor output connector to
a surveillance TV monitor or the MAIN-AUX monitor input connector of another digital
video/audio recorder. The MAIN-AUX monitor, if enabled, has the same output display
as the main monitor, and is typically used with RS-485 keyboard controller for distant
monitoring and control (e.g. in central control room).
Set this unit to 3-line
or 2-line according
to the connected
devices.
Devices
GND
TxD-
TxD+
RxD-
RxD+
Devices
GND
RS485-
RS485+
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