- Patton Electronics USER MANUAL Asynchronous Carrier Controlled Short Range Modem 1012B

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USER

MANUAL

MODEL 1012B

Asynchronous

Carrier Controlled Short

Range Modem

SALES OFFICE

(301) 975-1000

TECHNICAL SUPPORT

(301) 975-1007

http://www.patton.com

Part# 07M1012B Rev. A

Doc# 040061U

Revised 10/28/03

An ISO-9001

Certified Company

Patton Electronics 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: www.patton.com

Sales E-mail: sales@patton.com

Support E-mail: support@patton.com

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 BABT and ISO 9001 certified. We meet and exceed the highest standards in

the industry (CE, UL, etc.).

Please contact us and let us know how we may provide you with the

answers to your needs.

Thank you.

Burton A.Patton

Vice President

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

_________________________________________________________

Summary of content (8 pages)

PAGE 1
Dear Valued Customer, Thank you for purchasing Patton Electronics products! We do appreciate your business. I trust that you find this user manual helpful.
PAGE 2
1.0 WARRANTY INFORMATION Patton Electronics warrants all Model 1012B components to be free from defects, and will—at our option—repair or replace the product should it fail within one year from the first date of shipment. This warranty is limited to defects in workmanship or materials, and does not cover customer damage, abuse or unauthorized modification. If this product fails or does not perform as warranted, your sole recourse shall be repair or replacement as described above.
PAGE 3
.0 CONFIGURATION By default, the Model 1012B is configured to be a DCE with the transmitter set for controlled carrier. If the 1012B is in controlled carrier mode for multi-point operation, the transmitter is controlled by RTS (pin 4) when it is a DCE, and controlled by CD (pin 8) when configured as a DTE. To change the DTE/DCE setting, do the following: 1. Using a small screwdriver, insert the tip into one of the slots in the side of the Model 1012B (see Figure 2).
PAGE 4
.0 INSTALLATION 3.2 SETTING THE RTS/CD CARRIER CONTROL JUMPER The RTS/CD jumper (see Figure 1) is identified as J2 inside the 1012B (see Figure 1). To access this strap, do the following: 1. Using a small screwdriver, insert the tip into one of the slots in the side of the Model 1012B (see Figure 2). 2. Rotate the screwdriver as shown in Figure 2 to open the case.
PAGE 5
Signal/Pin Assignments Figure 5. Stripping 0.25-inch of insulation from the twisted pairs 3. Connect one pair of wires to XMT+ and XMT- (transmit positive and negative) on the terminal block, making careful note of which color is positive, and which color is negative. 4. Connect the other pair of wires to RCV+ and RCV- (receive positive and negative) on the terminal block, again making careful note of which color is positive, and which color is negative.
PAGE 6
1 2 3 4 5 6 7 8 1 2 3 4 5 6 AT&T standard modular pin assignments 4.2.2 DAISY CHAIN TOPOLOGY Using a daisy chain topology, you may connect several Model 1012Bs together in a master/slave arrangement. Maximum distance between the units will vary based upon the number of drops, data rate, wire gauge, etc. Contact Patton Technical Support at (301) 975-1007; http://www.patton.com; or, support@patton.com for specific distance estimates. Figure 6 shows how to wire the two-pair cables properly for a HOST 4.
PAGE 7
APPENDIX A SPECIFICATIONS APPENDIX B RS-232C PIN CONFIGURATIONS Transmission Format: Transmission Line: Interfaces: Data Rates: Isolation: Asynchronous, full duplex, half duplex Two unconditioned twisted pair AWG 19–26 EIA RS-232, ITU/CCITT V.24 0–38.
PAGE 8
APPENDIX C MODEL 1012B BLOCK DIAGRAM Notes ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ____________