AVE VSI-PRO PIN # Function Direction, Dtr, Dsr, Cts, RS-232 Serial Input, PIN # Signal Name RS232

CONNECTIONS

PIN #	FUNCTION	DIRECTION
1	Alarm Out 1	Open Collector Transisitor
2	Receive Data	To VSI-Pro
3	Transmit Data	From VSI-Pro
4	DTR	From VSI-Pro (Remain High)
5	Ground
6	DSR	From VSI-Pro (Stay High)
7	RTS ( Alarm In )	To VSI-Pro
8	CTS	From VSI-Pro
9	Alarm Out 2	Open Collector Transistor

Table 1: Pin-Out of the DB-9 Female Connector on the VSI-Pro RS-232

3.1 RS-232 SERIAL INPUT

The VSI-Pro accepts serial data via the DB-9 female connector located on the rear of VSI-Pro. This connector is similar to “AT” type computer RS232 serial ports and the pin out is identical. Table 1 shows the standard pin out for VSI-Pro RS-232 female connector. On the other hand Table 2 compares the VSI-Pro RS-232 with standard “AT” computer’s RS-232 connector.

PIN #	SIGNAL NAME ( RS232 )	VSI-Pro
1	CD (Carrier Detect )	Alarm Out 1
2	RxD ( Recieve Data )	RxD
3	TxD ( Transmit Data )	TxD
4	DTR ( Data Terminal Ready )	Aways True
5	SG ( Signal Control )	GND

6DSR ( Data Set Ready ) Aways True

7	RTS ( Request to Send )	CTS ( Option
)
8	CTS ( Clear to Send )	RTS ( Option
)	Table 2: RS-232 DB-9 Pin-Out vs VSI-Pro DB-9 Pin-Out
9
	RI ( Ring Indicator )	Alarm Out 2

VSI-Pro VIDEO SERIAL INTERFACE

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