Speco Technologies DVR-16/IP user manual External I/O Port 37pin Dsub, External I/O Board

External I/O Port (37pin DSUB)

Pin No.	Definition	Direction	Pin No.	Definition	Direction
1	GND	Power	20	Reserved	Input
2	GND	Power	21	Reset Alarm	Input
3	GND	Power	22	Day / Night output	Output
4	GND	Power	23	Day / Night switch	Input
5	Reserved	-	24	Set Alarm	Input
6	Reserved	-	25	Reserved	-
7	Alarm NO	Output	26	Alarm In 13	Input
8	Alarm COM	Output	27	Alarm In 12	Input
9	Alarm NC	Output	28	Alarm In 11	Input
10	GND	Power	29	Alarm In 10	Input
11	GND	Power	30	Alarm In 9	Input
12	GND	Power	31	Alarm In 8	Input
13	GND	Power	32	Alarm In 7	Input
14	GND	Power	33	Alarm In 6	Input
15	GND	Power	34	Alarm In 5	Input
16	Alarm In 16	Input	35	Alarm In 4	Input
17	Alarm In 15	Input	36	Alarm In 3	Input
18	Alarm In 14	Input	37	Alarm In 2	Input
19	Alarm In 1	Input

External I/O Board

There is an “External I/O board” included in the DVR-16/IP box. You can connect it to the External I/O port; the pins are identified as the definitions listed on the board. Three pins are listed but of no use: VCR Trigger, RS-232 RX and RS-232 TX.

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