Patton electronic 2020N user manual RS-232 Interface Standards

APPENDIX B

V.35 INTERFACE STANDARDS

CCITT V.35/EIA-530 INTERFACE (DB-25)

APPENDIX C

RS-232 INTERFACE STANDARDS

RS-232C/V.24 INTERFACE (DB-25)

Transmit Data B - 14

1 - (FG) Frame Ground

2 - Transmit Data A

1- (FG) Frame Ground

Transmit Clock A - 15

3 - Receive Data A

Receive Data B - 16

4 - (RTS) Request to Send

Receive Clock A - 17

5 - (CTS) Clear to Send

Transmit Clock - 15

2- (TD) Transmit Data

3- (RD) Receive Data

Receive Clock - 17

4- (RTS) Request to Send

5- (CTS) Clear to Send

Data Term. Ready (DTR) - 20

6 - (DSR) Data Set Ready

7 - (SG) Signal Ground

8 - (CD) Carrier Detect

6- (DSR) Data Set Ready

7- (SG) Signal Ground

9 - Receive Clock B

11 - External Clock B

Data Term. Ready (DTR) - 20

8- (DCD) Data Carrier Detect

External Clock A - 24

12 - Transmit Clock B

CCITT V.35 Interface (M/34 Male)

External Clock - 24

	B	A
Signal Ground -B	D	C
Clear To Send -D	F	E
Data Carrier Detect -F	J	H
	L	K
	N	M
	R	P
Receive Data (A) -R	T	S
Receive Data (B) -T	V	U
Receive Timing (A) -V	X	W
Receive Timing (B) - X	Z	Y

BB AA

DD CC

FF EE

JJ HH

LL KK

NN MM

A- Frame Ground C- Request to Send E- Data Set Ready

H- Data Terminal Ready K-

M-

P- Transmitted Data (A) S- Transmitted Data (B) U- Terminal Timing (A)

W- Terminal Timing (B) Y- Transmit Timing (A) AA- Transmit Timing (B)

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