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USER
MANUAL

MODEL 2021

Interface Powered
RS-232 to X.21 Converter

SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
http//:www.patton.com

Part #07M2021-C
Doc. #077061U,
Rev. D
Revised 1/22/08

C E R T I F I E D

An ISO-9001

Certified Company

Dear Valued Customer,

Thank you for purchasing Patton Electronics products!   We do

appreciate your business.  I trust that you find this user manual helpful.  

We manufacture one of the widest selections of data

communications products in the world including CSU/DSU's, network
termination units, powered and self-powered short range modems, fiber optic
modems, interface converters, baluns, electronic data switches, data-line surge
protectors, multiplexers, transceivers, hubs, print servers and much more.  We
produce these products at our Gaithersburg, MD, USA, facility, and can
custom manufacture products for your unique needs.

We would like to hear from you.  Please contact us in any of the

following ways to tell us how you like this product and how we can meet your
product needs today and in the future.  

Web:               

http://www.patton.com

Sales E-mail:      

[email protected]

Support E-mail:    [email protected]
Phone - Sales      

(301) 975-1000

Phone - Support  

(301) 975-1007

Fax:                   

(301) 869-9293

Mail:               

Patton Electronics Company
7622 Rickenbacker Drive
Gaithersburg, MD  20879   USA

We are committed to a quality product at a quality price.  Patton

Electronics is ISO 9001 certified.  We meet and exceed the highest standards
in the industry (CE, UL, etc.).

It is our business to serve you.  If you are not  satisfied with any

aspect of this product or the service provided from Patton Electronics or its
distributors, please let us know. 

Thank you.

Burton A.Patton

Vice President

P.S.  Please tell us where you purchased this product.

Summary of Contents for 2021

Page 1: ...ucts at our Gaithersburg MD USA facility and can custom manufacture products for your unique needs We would like to hear from you Please contact us in any of the following ways to tell us how you like...

Page 2: ...which are designed to provide reasonable protection from such interference in a commercial installation However there is no guarantee that interference will not occur in a particular installation If...

Page 3: ...which are designed to provide reasonable protection from such interference in a commercial installation However there is no guarantee that interference will not occur in a particular installation If...

Page 4: ...asses all necessary clocking and control signals and is transparent to protocol The Patton Model 2021 connects directly to the synchronous RS 232 interface using a male or female DB 25 connector A mal...

Page 5: ...asses all necessary clocking and control signals and is transparent to protocol The Patton Model 2021 connects directly to the synchronous RS 232 interface using a male or female DB 25 connector A mal...

Page 6: ...e and connectors 5 APPENDIX B PATTON MODEL 2021 INTERFACE STANDARDS 6 Model 2021 X 21 Interface 1 FRAME GROUND 2 TRANSMITTED A 3 CONTROL A 4 RECEIVE A 5 INDICATION A 6 SIGNAL TIMING A 7 8 SIGNAL GROUN...

Page 7: ...e and connectors 5 APPENDIX B PATTON MODEL 2021 INTERFACE STANDARDS 6 Model 2021 X 21 Interface 1 FRAME GROUND 2 TRANSMITTED A 3 CONTROL A 4 RECEIVE A 5 INDICATION A 6 SIGNAL TIMING A 7 8 SIGNAL GROUN...

Page 8: ...APPENDIX C PATTON MODEL 2021XC XT BLOCK DIAGRAM DCE DTE 7 APPENDIX C PATTON MODEL 2021XT XC BLOCK DIAGRAM DTE DCE 8...

Page 9: ...APPENDIX C PATTON MODEL 2021XC XT BLOCK DIAGRAM DCE DTE 7 APPENDIX C PATTON MODEL 2021XT XC BLOCK DIAGRAM DTE DCE 8...

Page 10: ..._________________________ __________________________________________ __________________________________________ 10 Notes __________________________________________ ____________________________________...

Page 11: ..._________________________ __________________________________________ __________________________________________ 10 Notes __________________________________________ ____________________________________...

Page 12: ...l us how you like this product and how we can meet your product needs today and in the future Web http www patton com Sales E mail sales patton com Support E mail support patton com Phone Sales 301 97...

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