Black Box IC266A manual Connector Pin Assignments DB25 Male, Name Pin # Mode

CHAPTER 1: Specifications

1.2 Connector Pin Assignments (DB25 Male)

Name			Pin #	Mode
GND	Ground		7	—
RDB	RX+	Receive Positive	16	Input
RDA	RX-	Receive Negative	3	Input
CTSB	CTS+	Clear to Send Positive	13	Input
CTSA	CTS-	Clear to Send Negative	5	Input
DSRB	DSR+	Data Set Ready Positive	22	Input
DSRA	DSR-	Data Set Ready Negative	6	Input
DCDB	DCD+	Data Carrier Detect Positive	10	Input
DCDA	DCD-	Data Carrier Detect Negative	8	Input
TDB	TX+	Transmit Positive	14	Output
TDA	TX-	Transmit Negative	2	Output
RTSB	RTS+	Request to Send Positive	19	Output
RTSA	RTS-	Request to Send Negative	4	Output
DTRB	DTR+	Data Terminal Ready Positive	23	Output
DTRA	DTR-	Data Terminal Ready Negative	20	Output

NOTE

These assignments meet EIA/TIA.ANSI-574 DTE specifications for DB25 type connectors.

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