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USER
MANUAL
MODEL 2450
56/64 Kbps, 4-Wire
DDS & Clear Channel
CSU/DSU
Part# 07M2450-B SALES OFFICE
Doc# 099051UB
(301) 975-1000
Revised 3/12/97
TECHNICAL SUPPORT
CERTIFIED
(301) 975-1007
An ISO-9001
http://www.patton.com
Certified Company
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1.0 WARRANTY INFORMATION Your telephone company may make changes in its facilities, Patton Electronics warrants all Model 2450 components to be equipment, operations or procedures that could affect the proper free from defects, and will—at our option—repair or replace the product operation of the Model 2450 Series. If this happens, the telephone should it fail within one year from the first date of shipment. company should give you advance notice to prevent the interruption of This warranty is
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3.0 CONFIGURATION 2.0 GENERAL INFORMATION The Model 2450 is easy to install and is ruggedly designed for Thank you for your purchase of this Patton Electronics product. excellent reliability: just set it and forget it. The following instructions This product has been thoroughly inspected by Patton's qualified will help you set up and install the Model 2450 properly. technicians. If any questions or problems arise during installation or use of this product, please do not hesitate to contac
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Switch S1-3: Circuit Assurance S1 SUMMARY TABLE On dedicated circuits, the transmitter and the CTS output can be Position Function Factory Default configured to go On only when a working communication circuit is S1-1 Clock Mode Off established. If Circuit Assurance is used, enable it on only one end of Network } S1-2 Clock Mode On the communication link. S1-3 Circuit Assurance Off Disabled Circuit S1-4 RTS On Forced On S1-3 Assurance Description On Enabled CTS will go low and the S1-5 Line
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4.0 INSTALLATION Switch S1-6: Front Panel Switch Enable/Disable The Model 2450 is designed for 4-wire, full duplex communication Switch S1-6 determines whether the front panel switches may be over a DDS or Clear Channel carrier circuit, or over dedicated twisted used to perform diagnostic functions. pair. This section will describe proper connection of the line interface, the DTE (terminal) interface, and the AC power supply. S1-6 Activation Description Off Enabled Front panel switches may
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5.0 OPERATION 4.2 DTE (TERMINAL) CONNECTION Once you have configured the Model 2450 properly (see Section The Model 2450 is wired to connect to a DTE. If your terminal 3.0) and made line, DTE and power connections correctly (see Section device is DCE, call Patton Technical Support at (301) 975-1007 for 4.0), you are ready to operate the unit(s). (Note: the unit is operational specific installation instructions. as soon as power is applied–there is no power switch.) This section describes
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• “Error” glows red when errors are detected in test mode during 5.2.2 Using Remote Digital Loopback (RDL) the “511” and 511/E” tests. This indicator also glows during normal operation to indicated framing errors and/or bipolar The Remote Digital Loopback (RDL) test checks the performance violations in 64 Kbps mode, or invalid bipolar violations in 56 of both the local and remote Model 2450s, and the communication link Kbps mode (see Figure 7, below). between them. Any characters sent to the
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APPENDIX A APPENDIX B CABLE RECOMMENDATIONS PATTON MODEL 2450 SPECIFICATIONS The following statements apply to the Model 2450 when used as a short range modem over private twisted pair: DDS Type: Dedicated Transmission Format: Synchronous, full duplex All Patton Electronics Company Short Range Modems (SRMs) are Maximum Operating tested to the distances published in our Catalogs and Specification Distance: 18000 feet (3.4 miles) over 26 AWG twisted Sheets on twisted-pair cable with the fol
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APPENDIX C APPENDIX D FACTORY REPLACEMENT PARTS INTERFACE PIN ASSIGNMENT AND ACCESSORIES DDS/CLEAR CHANNEL INTERFACE Patton Model # Description The DDS/Clear Channel Interface is an RJ-48S modular jack. 2450/A.............................56/64 kbps CSU/DSU (RS-232. DB-25 Pin # Signal female connector) 1 TX+ 2450/B.............................56/64 kbps CSU/DSU (RS-422/530, 2 TX- DB-25 female connector) 2450/C.............................56/64 kbps CSU/DSU (V.35, M/34 3 no connection female conn
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(APPENDIX D - Continued) (APPENDIX D - Continued) MODEL 2450/A MODEL 2450/E DB-25 CONNECTOR (RS-232/V.24), TERMINAL INTERFACE DB-25 CONNECTOR (V.35), TERMINAL INTERFACE Pin # Signal Pin # Signal 1 Frame Ground 1 Frame Ground 2TD 2 Transmit Data A 3RD 3 Receive Data A 4RTS 4RTS 5 CTS 5 CTS 6 DSR 6 DSR 7 SGND (Signal Ground) 7 SGND (Signal Ground) 8CD 8CD 15 TC 9 Receive Clock B 17 RC 11 External Clock B 18 LL (Local Loop) 12 Transmit Clock B 21 RL (Remote Loop) 14 Transmit Data B 24 XTC 15 Transm
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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 m
