Appendix C

R/F Serial Pin-outs

Base Station to Host Pin-outs

The Base Station is connected to a PC with one of the following cables:

F34 DB25 Null Modem Cable

These are the pin-outs for Cable F34, a DB25 Female to 8 pin modular RJ45 with pins 2 and 3 crossed, used for a Base connected directly to a 25 pin male host serial port.

Mod 8 RJ45

Function

DB25 Female

1

Frame Ground

1

2

Transmit Data

3

3

Receive Data

2

4

Signal Ground

7

F34 Null Modem Cable

*Modular Pins 5-8 are connected to DB25 pins 5,6,8,4 but not used by the R/F Base.

If you are planning to use a serial extension cable of 80 feet or more, you need to open the DB25 shell of our cable and be sure that only pins 1,3,2, and 7 are connected. All others should be cut. This is necessary to keep Windows from following noise transitions as handshaking transitions that can severely degrade the application or even crash Windows.

F36 DB9 Straight Cable

These are the pin-outs for Cable F36, a DB9 Female to 8 pin modular RJ45. This cable is used to connect the Base to a 9 pin Male host serial port.

Mod 8 RJ45

Function

DB 9 Female

 

Shell

 

1

(chassis ground)

Shell

2

Transmit Data

2

3

Receive Data

3

4

Signal Ground

5

F36 9 pin cable

If you plan on building your own extension cables, you must use well shielded cable and you cannot use twisted -pair cable. You can order

custom length RS-232 extension cables from Global Computer Supplies - ph. 800-845-6225, part number ZCC4912X. Many other companies sell 10 ft., 25 ft., and 50 ft. DB9 Extension Cables including Radio Shack.

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Worth Data 701 RF manual Serial Pin-outs, Base Station to Host Pin-outs, F34 DB25 Null Modem Cable, F36 DB9 Straight Cable
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