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PPENDIX D

PATTON MODEL 222N BLOCK DIAGRAM

Copyright © 1997

Patton Electronics Company

All Rights Reserved

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.
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15

Summary of Contents for 222N, 222NS

Page 1: ...USER MANUAL MODEL 222N and 222NS Miniature RS 232 to RS 422 Converters C E R T I F I E D An ISO 9001 Certified Company...

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Page 3: ...e suppressors S model only 3 1 SETTING THE DTE DCE SWITCH For your convenience the Model 222N has an externally accessible DTE DCE switch see diagram below If the device connected to the Model 222N is...

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Page 5: ...ows how a cross over cable should be constructed for an environment where both the Model 222N and the RS 422 device use a 6 wire RJ 11 connector Similar logic should be followed when using RJ 45 conne...

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Page 7: ...is positive and which color is negative Ultimately you will want to construct a two pair cross over cable that makes a connection with the RS 422 device as shown below Model 222N RS 422 Device XMT RC...

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Page 9: ...ve connector screws NOTE If you must use a cable to connect the Model 222N to the RS 232 device make sure it is a straight through cable of the shortest possible length we recommend 6 ft or less 4 3 O...

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Page 11: ...ptimum performance from the Model 222N please keep the following guidelines in mind Always use twisted pair wire this is not an option Use twisted pair wire with a capacitance of 20pf ft or less Avoid...

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Page 13: ...and RCV are the EIA 422 A and B receivers respectively N N N N N N 2 XMT Transmit Data 3 RCV Receive Data Transmit Data XMT 14 Receive Data RCV 16 SIGNAL PIN SIGNAL PIN RJ 11 6 Pin SIGNAL PIN 1 G Gro...

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