RAD Data comm ASM-20 Appendix E Connection to RS-422, Signal Function RS-449 RS-422/423 EIA Pins

Appendix E

Connection to RS-422

E.1 General

Table E-1provides detailed information for connecting an ASM-20 (EIA 530) to a RS-422 (V.36) DTE.

Table E-1 Interface List for Connecting ASM-20 (RS- 530) to RS-422 (V.36) DTE

Signal Function	RS-449 (RS-422/423)			EIA 530
		37 Pins	DB-25 Female Standalone
				and Frame
	Pin	Circuit	Pin	Circuit
Protective Ground	1	Shield	1
Signal Ground	19	SG	7	AB
DTE Common Return	37	SC
DCE Common Return	20	RC
Transmitted Data	4	SD (A)	2	BA (A)
	22	SD (B)	14	BA (B)
Received Data	6	RD (A)	3	BB (A)
	24	RD (B)	16	BB (B)
Request to Send	7	RS (A)	4	CA (A)
	25	RS (B)	19	CA (B)
Clear to Send	9	CS (A)	5	CB (A)
	27	CS (B)	13	CB (B)
Data Set Ready	11	DM (A)	6	CC (A)
	29	DM (B)	22	CC (B)
Data Terminal Ready	12	TR (A)	20	CD (A)
	30	TR (B)	23	CD (A)
Carrier Detect	13	RR (A)	8	CF (A)
	31	RR (B)	10	CF (B)
External Transmit Clock	17	TT (A)	24	DA (A)
	35	TT (B)	11	DA (B)
Transmit Clock	5	ST (A)	15	DB (A)
	23	ST (B)	12	DB (B)

General E-1