RAD Data comm ASM-20 operation manual Rts

Appendix D. DTE Interface ConnectorsASM-20Installation & Operation Manual

Table D-1 Interface Signal List (Female Connectors) Pins and Standard Signal Names (Cont.)

	RS-232		V.35				EIA-530		X.21
Signal	DB-25	DB-25		34-pin			DB-25	DB-25		DB-15	Description
Function	Stand-	Frame	Standalone			Standalone		Frame	Standalone
	alone					and Frame
	and								Pin Circuit/
	Frame			Pin Circuit		Pin Circuit				(Function)
Request to	4	4	C	RTS	105	4	CA(A)	4	3	C(A)	A positive level
Send						19	CA(B)	19	10	C(B)	to the ASM-20
										[CONTROL]	when data
											transmission is
											desired.
Clear to Send	5	5	D	CTS	106	5	CB(A)				A positive level
						13	CB(B)				from the
											ASM-20 with
											delay, after
											receipt of
											Request to
											Send, and
											when the
											ASM-20 is
											ready to
											transmit.
Data Set	6	6	E	DSR	107	6	CC(A)				A positive level
Ready						22	CC(B)				from the
											ASM-20 when
											the power is
											on, and the
											ASM-20 is
											(a)not in the
											DIGITAL
											LOOP mode,
											or (b) has not
											received a
											REMOTE
											LOOPBACK
											signal from the
											remote unit.
Data Terminal	20	20	H	DTR	108	20	CD(A)				Not used.
Ready						23	CD(B)
Carrier Detect	8	8	F	DCD	109	8	CF(A)	8	5	I(A)	A positive level
						10	CF(B)	10	12	I(B)	from the
									[INDICATION]		ASM-20,
											except when a
											loss of the
											received signal
											is detected, or
											when Data Set
											Ready is
											negative.

D-2 General 13/4/99 16:40