Black Box LR1530A-EU-R3, LR1530A-R3 manual RS232C / V.24 Link Pinouts, Dce

Servicing Information

RS232C / V.24 Link Pinouts

Con	Circ	Circuit	Direction
tact	uit	Name	To	From
No.			DCE	DCE
1	AA	Protective Ground	NA
2	BA	Transmitted Data	X
3	BB	Received Data			X
4	CA	Request to Send	X
5		----------
6	CC	Data Set Ready			X
7	AB	Signal Ground	NA
8	CF	Received Line Signal Detector (CD)			X
9		----------
10		----------
11		----------
12		----------
13		----------
14		----------
15	DB	Transmit Signal Element Timing (DCE Source)			X
16		----------
17	DD	Receive Signal Element Timing (DCE Source)			X
18		Local Loopback	X
19		----------
20	CD	Data Terminal Ready	X
21		----------
22	CE	Ring Indicator			X
23		----------
24	DA	Transmit Signal Element Timing (DTE Source)	X
25		----------

Figure C-7 RS232 / V.24 Link Pinouts

The connecting cable must be a shielded cable.

NOTE For U.K. Approval:

The connecting cable may be any length between 0 and 5M. Each end must be terminated in a male 25 pin X.21 bis connector as defined in ISO-2110 1989.

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