Mitsubishi Electronics DX-VS1 Rear View and Description, connector name, description, remarks

2) Rear View and Description

connector name		description		remarks
Video Input	Connector for inputting video signal using BNC cable
DIP Switch	Switch for	designating terminal	of video signal of	Refer to 4)
	video input BNC connector(Only left swith is used)
Video Output	Connector For outputting video signal using BNC ca-
	ble
PTZ/DVR/COM	Connector for connecting DX-VS1UE with digital re-
	corder in order to operate digital recorder. This con-			GND ter-
(RS-232(1))
	sists of RX1,TX1 and GND.			minal is
				used in
PTZ/DVR/COM	Connector	for connecting	DX-VS1UE with
	pan/tilt/zoom cameras in order to operate digital re-			common
(RS-232(2))
	corder. This consists of RX2,TX2 and GND.
	Connector for communication between DX-VS1UE
PTZ/DVR/COM	and pan/tilt/zoom cameras which support RS-422 pro-
(RS-422)	tocol. This is half duplex and consits of R+,R-,T+
	and T-.
PTZ/DVR/COM	Connector for communication between DX-VS1UE
	and pan/tilt/zoom cameras which support RS-485 pro-
(RS-485)
	tocol. This consists of S+ and S-.

While you are using one of serial connecters among RS-232(2) , RS-422 and RS-485 connector, you can’t use the other two connectors.

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DX-VS1UE User’s Manual