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APPENDIX B

RS-232 PIN CONFIGURATIONS

Copyright © 1998

Patton Electronics Company

All Rights Reserved

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

To Model 1025

3- (RD) Receive Data

From Model 1025

4- (RTS) Request to Send

To Model 1025

5- (CTS) Clear to Send

From Model 1025

6- (DSR) Data Set Ready

From Model 1025

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

From Model 1025

To Model 1025

Data Term. Ready (DTR) - 20

DIRECTION

“DCE” STANDARD SETTING

DIRECTION

To Model 1025

Transmitting Timing (LXC) - 24

From Model 1025

Transmitting Timing - 15  

From Model 1025

Receiver Timing - 17

Summary of Contents for 1025

Page 1: ...1025S Synchronous Short Range Modem with Clocking Options SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07M1025 C Doc 041012UC Revised 4 20 98 C E R T I F I E D An...

Page 2: ...d to provide reasonable protection from such interference in a commercial installation However there is no guarantee that interfer ence will not occur in a particular installation If the Model 1025 do...

Page 3: ...ioned twisted pair Customized VLSI chip with separate filter for each data rate No AC power or batteries required Miniature size Silicon Avalanche Diode surge protection Model 1025S 2 2 DESCRIPTION Th...

Page 4: ...d by the host terminal the Model 1025 raises CTS after a delay in order to give the remote termi nal time to receive an incoming signal Depending on the type of envi ronment either a 7mS or 53mS delay...

Page 5: ...RS 232 interfaces and how to operate the Model 1025 4 1 CONNECTION TO THE TWISTED PAIR INTERFACE The Model 1025 supports data only communication between two RS 232 devices at distances to 11 miles an...

Page 6: ...nsitive so either wire may connect to either pole 5 Connect the other pair of wires to the two RCV receive poles on the terminal block The Model 1025 is not polarity sensi tive so either wire may conn...

Page 7: ...one captive screw through a saddle washer Then insert the entire piece through the hole in the DB 25 end of the case Snap that side of the case closed Repeat the process for the other side This compl...

Page 8: ...r If you need to connect the Model 1025 to another DCE device you must use a null modem cable wired according to diagram below We recom mend that the cable is as short as possible preferably 6 feet or...

Page 9: ...Model 1025 4 RTS Request to Send To Model 1025 5 CTS Clear to Send From Model 1025 6 DSR Data Set Ready From Model 1025 7 SG Signal Ground 8 DCD Data Carrier Detect From Model 1025 To Model 1025 Data...

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