Patton electronic 1010A user manual Features, APPENDIX C RS-232C PIN CONFIGURATIONS, Description

2.0 GENERAL INFORMATION

Thank you for your purchase of this Patton Electronics product. This product has been thoroughly inspected and tested and is warranted for One Year parts and labor. If any questions or problems arise during installation or use of this product, please do not hesitate to contact Patton Electronics Technical Support at (301) 975-1007.

2.1 FEATURES

APPENDIX C

RS-232C PIN CONFIGURATIONS

RS-232C INTERFACE (DCE)

1- (FG) Frame Ground

2- (TD) Transmit Data

3- (RD) Receive Data

4- (RTS) Request to Send

5- (CTS) Clear to Send 6- (DSR) Data Set Ready

•Transformer coupled for DC isolation between modems

•Immune to ground loops caused by ground potential differences

•Supports asynchronous RS-232 communication over 2 twisted pair

•Supports data rates to 115.2 Kbps, distances to 8.5 miles

•Loops back all handshaking signals on the RS-232 interface

•Externally accessible DCE/DTE switch makes configuration easy

•Very thin case (.75") for closely spaced computer ports

•No AC power or batteries required—draws all necessary operating power from the RS-232 interface

•Provides surge protection of 600 Watts per wire

2.2 DESCRIPTION

The Patton Model 1010A miniature, high speed, transformer isolated short range modem lets two asynchronous RS-232 devices communicate between buildings, over two twisted pair. Supporting asynchronous data rates to 115.2 Kbps, the Model 1010A derives the necessary power for operation from the data and control voltages on the RS-232 interface. DC transformer isolation on the line side gives the Model 1010A immunity to ground loops that would otherwise hamper between-building communications.

An external DCE/DTE switch lets you connect to the serial port of either a computer/terminal (DTE) or a modem (DCE) without using a crossover cable. The Model 1010A is available with three 4 wire interface options: RJ-11, RJ-45 or terminal blocks with strain relief.

The Model 1010A also incorporates high speed avalanche diodes that intercept data line transient surges and shunt them safely to chassis ground. With surge handling capacity of 600W per wire at 1mS, the 1010A can protect itself and connected equipment from nearby lightning strikes and other surges of electromagnetic radiation.

Data Term Ready (DTR) - 20

7- (SG) Signal Ground

8- (DCD) Data Carrier Detect

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