Patton-electronic 2703 User Manual

USERMANUALMODEL 2703G.703/E1 Digital Modem SALES OFFICE(301) 975-1000TECHNICAL SUPPORT(301) 975-1007http://www.patton.comPart# 07M2703-IDoc# 031041UIR

APPENDIX BPATTON MODEL 2703 PIN CONFIGURATIONS1713- (CTS/) Clear to Send12- (TC/) Transmit Clock11- Not Used10- (CD/) Carrier Detect9- (RC/) Receive C

19APPENDIX C (contd)PATTON MODEL 2703 FACTORY PARTS AND ACCESSORIESC-3 Terminal (DTE) Interface CablesNo terminal (DTE) cable is supplied with the Mo

1.0 WARRANTY INFORMATIONPatton Electronics warrants all Model 2703 components to befree from defects, and will—at our option—repair or replace the pr

2.0 GENERAL INFORMATION Thank you for your purchase of this Patton Electronics product.This product has been thoroughly inspected and tested and is w

3.1.1 Switch Set S1The configuration switches on S1 set clocking, rate adaptation,loopback enable, data invert, and interface (see also Switch S2).

Switch S1-8: Loopback Test EnableDepending upon the setting of switch S1-8 the Model 2703 willeither be continually in loopback mode, or loopback mod

The internal jumpers mounted on the Model 2703’s PC board(labeled LK1 - LK7) are used to configure the 75 ohm or 120 ohm net-work link parameters. Fi

Jumper LK6 & LK7: 75 Ohm Termination ImpedanceThis jumper sets the termination impedance correctly for 75 Ohmoperation. Both jumpers must be in

4.2 CONNECTION TO THE TERMINAL DEVICEThe Model 2703 is wired as a DCE, and–when configured proper-ly–supports communication with a wide variety of t

5.3 LOOPBACK TEST (LAL)The Model 2703 is equipped with a Local Analog Loopback (LAL)mode to assist in evaluating the operation of the local Model 270