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APPENDIX C

PATTON MODEL PIN ASSIGNMENTS

EIA-232 Interface

(DB-25 Connector)

APPENDIX C

PATTON MODEL PIN ASSIGNMENTS

EIA-422 (EIA-530) Interface

(DB-25 Connector)

EIA-422 Interface

(RJ-11 Female Connector)

EIA-422 Interface

(RJ-45 Female Connector)

NOTE:

Signals XMT+ and XMT- are the EIA=422 “A” and “B” transmitters, respectively;

Signals RCV+ and RCV- are the EIA-422 “A” and “B” receivers, respectively.

1- (FG) Frame Ground
2- (TD) Transmit Data

To Model 222N

3- (RD) Receive Data

From Model 222N

4- (RTS) Request to Send

To Model 222N

5- (CTS) Clear to Send

From Model 222N

6- (DSR) Data Set Ready

From Model 222N

7- (SG) Signal Ground
8- (DCD) Data Carrier Detect

From Model 222N

To Model 222N

Data Term. Ready (DTR) - 20

DIRECTION

STANDARD "DCE" SETTING

DIRECTION

1- (FG) Frame Ground
2- (TD) Transmit Data

From Model 222N

3- (RD) Receive Data

To Model 222N

4- (RTS) Request to Send

From Model 222N

5- (CTS) Clear to Send

To Model 222N

6- (DSR) Data Set Ready

To Model 222N

7- (SG) Signal Ground
8- (DCD) Data Carrier Detect

To Model 222N

From  Model 222N    Data Term. Ready (DTR) - 20

DIRECTION

STANDARD "DTE" SETTING

DIRECTION

2- (XMT+) Transmit Data +
3- (RCV+) Receive Data +

Transmit Data - (XMT-) - 14

Receive Data - (RCV) - 16

SIGNAL/PIN #

SIGNAL/PIN#

RJ-11 (6 Pin)

SIGNAL/PIN #

1 - (G) Ground

2 -(RCV-) Receive Data +

3 -(XMT+) Transmit Data -

4 -(XMT-) Transmit Data -

5 -(RCV+) Receive Data +

6 - (G) Ground

RJ-45 (8 Pin)

SIGNAL/PIN #

1 - no connection

2 - (G) Ground

3 - (RCV-) Receive Data -

4 - (XMT+) Transmit Data +

5 - (XMT-) Transmit Data -

6 - (RCV+) Receive Data +

7 - (G) Ground

8 - no connection

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Summary of Contents for 222N, 222NS

Page 1: ...USER MANUAL MODEL 222N and 222NS Miniature RS 232 to RS 422 Converters C E R T I F I E D An ISO 9001 Certified Company...

Page 2: ......

Page 3: ...e suppressors S model only 3 1 SETTING THE DTE DCE SWITCH For your convenience the Model 222N has an externally accessible DTE DCE switch see diagram below If the device connected to the Model 222N is...

Page 4: ......

Page 5: ...ows how a cross over cable should be constructed for an environment where both the Model 222N and the RS 422 device use a 6 wire RJ 11 connector Similar logic should be followed when using RJ 45 conne...

Page 6: ......

Page 7: ...is positive and which color is negative Ultimately you will want to construct a two pair cross over cable that makes a connection with the RS 422 device as shown below Model 222N RS 422 Device XMT RC...

Page 8: ......

Page 9: ...ve connector screws NOTE If you must use a cable to connect the Model 222N to the RS 232 device make sure it is a straight through cable of the shortest possible length we recommend 6 ft or less 4 3 O...

Page 10: ......

Page 11: ...ptimum performance from the Model 222N please keep the following guidelines in mind Always use twisted pair wire this is not an option Use twisted pair wire with a capacitance of 20pf ft or less Avoid...

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Page 13: ...and RCV are the EIA 422 A and B receivers respectively N N N N N N 2 XMT Transmit Data 3 RCV Receive Data Transmit Data XMT 14 Receive Data RCV 16 SIGNAL PIN SIGNAL PIN RJ 11 6 Pin SIGNAL PIN 1 G Gro...

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