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USER
MANUAL
MODEL 2500RC Series
Models 2500RC, 2510RC
and 2520RC:
All-Rate CSU/DSU
Rack Mount Card
SALES OFFICE
Part# 07M2500RC--D
Doc# 099011UD
(301) 975-1000
Revised 3/19/97
TECHNICAL SUPPORT
CERTIFIED
(301) 975-1007
An ISO-9001
http://www.patton.com
Certified Company
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TABLE OF CONTENTS 1.0 WARRANTY INFORMATION Patton Electronics warrants all Model 2500RC Series Section Page 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 1.0 Warranty Information .............................................................2 shipment.This warranty is limited to defects in workmanship or 1.1 Radio and TV Interference materials, and does not cover customer damage, abuse, or 1.2 FCC In
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1.2 FCC INFORMATION 1.4 SERVICE The Model 2500 Series has been tested and registered in All warranty and nonwarranty repairs must be returned freight compliance with the specifications in Part 68 of the FCC rules. A label prepaid and insured to Patton Electronics. All returns must have a on the equipment bears the FCC registration number. You may be Return Materials Authorization number on the outside of the shipping requested to provide this information to your telephone company. container
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2.0 GENERAL INFORMATION 2.3 SUPPORTED APPLICATIONS Thank you for your purchase of this Patton Electronics product. The Model 2500RC Series includes three units: the Model 2500RC This product has been thoroughly inspected and tested and is All-Rate CSU/DSU, the Model 2510RC Switched 56 CSU/DSU and the warranted for One Year parts and labor. If any questions arise during Model 2520RC All-Rate/Switched 56 CSU/DSU. Depending upon the installation or use of the unit, contact Patton Electronics Te
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3.0 CONFIGURATION 3.1.1 Switch Set “S1” Before you can install and operate your Model 2500RC Series CSU/DSU, you must configure both the front and rear cards. The The configuration switches on switch set S1 allow you to specify Model 2500RC Series has two sets of eight switches (S1 and S2), a Line Rate, Circuit Assurance, RTS, Character Length, Data Format and reversible interface driver board and two Rotary Address switches DSR Loop Status. The table below summarizes S1 switch settings, (MS
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Switch S1-4: Circuit Assurance Switch S1-7: Data Format The transmitter and the CTS output can be configured to go On The data format selection controls whether an async-to-sync only when a working communication circuit is established. If Circuit conversion is performed. Assurance is used, enable it on only one end of the communication link. Circuit Assurance should be enabled in Switched 56 mode. S1-7 Data Format On Asynchronous Circuit Off Synchronous S1-4 Assurance Description On Enabled C
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Switches S2-1, S2-2 and S2-3: Rate Adapter/DTE Rate Switch S2-7: Anti-Stream Timer The Model 2500RC Series includes a rate adapter that allows the The anti-stream timer protects multidrop networks from a drop that unit to be used with DTE devices that support rates lower than 56/64 is continuously transmitting. If the terminal keeps RTS raised for more kbps. All switch settings below are valid for line rates of 56 or 64 kbps. than 30 seconds, the timer forces RTS off internally. This allows
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3.1.4 Setting Rotary Address Switches 2. Power up the terminal and set its RS-232C port as follows: 9600 baud If you plan to use the software control port to configure or dial the 8 data bits, 1 stop bit, no parity Model 2500RC Series unit, you will need to configure each front card local echo with a unique address. This is done by using a small screw driver to CR = CR/LF on inbound data set the two rotary switches, as shown in Figure 4, below. The switches ANSI, VT-100 emulation are set indi
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3.2.3 Verifying Software Switch Control For each screen described below, selecting a numbered option and pressing [RETURN] stores that option setting and returns you to the In order to use software switches for configuration, it is necessary Software Switch Menu (Note: All lettered options must be entered in to disable the hardware switch settings. To do this, use the following lower case) procedure (Note: If this procedure is omitted, your software configurations will be overridden by the har
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Force RTS DTE Data Format Choosing option 3 in the Software Switch Menu takes you to the Choosing option 5 in the Software Switch Menu takes you to the RTS Menu (below). The RTS input can be forced ON, ignoring the RTS Data Format Menu (below). This option controls whether an async-to- signal from the DTE. When RTS is forced ON, the transmitter is always sync conversion is performed between the DTE and the Model 2500RC enabled and the user may send data. On a Model 2510RC or 2520RC, Series.
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DSR Status During Local Loopback NOTE: For DTE data rates of 56 kbps or 64 kbps, set the rate adapter to “Line Rate = DTE Rate”, and set the Line Rate to 56 or Choosing option 6 in the Software Switch Menu takes you to the 64 kbps, respectively. For DTE rate of 57.6 kbps, set rate adapter DSR Loop Status Menu (below). This option controls the behavior of to “Line Rate = DTE Rate”, set line rate to 56 kbps, set DTE for two the DSR output during local loopback. To force DSR high (ON) during
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Set this option as follows: RTS/CTS Delay • Internal (Master): To use the Model 2500RC and 2520RC internal Choosing option “b “ in the Software Switch Menu takes you to the reference clock as the timing source, select item 1. Use internal timing RTS/CTS Delay Menu (below). This option lets you set the RTS/CTS in point-to-point applications where the Model 2500RC Series is being turn-on delay to Normal or Extended. The delay interval decreases as used as a limited distance modem. (Set the far
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3.3 REAR CARD CONFIGURATION 3.3.1 Model 1000RCM12548 Strap Settings The Model 2500RC Series has two interface card options: the Figure 7 shows strap locations for the Model 1000RMC12548 Model 1000RCM12548 (DB-25/RJ-48S) and the Model (DB-25/RJ-48S) rear cards. These straps determine various grounding 1000RCM13448 (M/34/RJ-48S). Each of these options supports one characteristics for the terminal interface and twisted pair lines. interface connection and one 4-wire connection. Figure 5 (be
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4.0 INSTALLATION SGND & FRGND (JB4) This section describes the functions of the Model 1000R16 rack In the connected position, this strap links DB-25 pin 7 (Signal chassis, tells how to install front and rear Model 2500RC Series cards Ground) and frame ground. In the open position, pin 1 is “lifted” from into the chassis, and provides diagrams for wiring the interface frame ground. connections correctly. JB4 Position 1&2 = SGND (Pin 7) and FRGND Connected 4.1 THE MODEL 1000R16 RACK CHASSIS P
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5.0 OPERATION Switching the Power Supply On and Off Once the Model 2500RC Series unit is installed and configured The power switch is located on the front panel. When plugged in properly it is ready to operate. This section describes the function of and switched on, a red front panel LED will glow. Since the Model the LED indicators, the status displays, the use of loopback test modes, 1000R16 is a "hot swappable" rack, it is not necessary for any cards to and Switched 56 dialing procedures
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• “CTS” will glow green to indicate an On condition. When on, 5.2.1 Displaying Configuration Settings the unit is ready to send data. If CTS remains off, check the Forced RTS, Circuit Assurance and Anti-Stream settings. To display the current settings of the hardware and /or software switches, go to the Main Menu and select item 2, “Read Configuration”. • “CD” will glow green to indicate that a valid carrier is present. This will take you to the Read Configuration Menu (below). If CD is not li
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5.2.2 Displaying Line/Loop Status LAL Test Activation To check the current status of the Model 2500RC Series and the The LAL test may be activated in one of three ways: associated circuit, go to the Main Menu and select item 4, “Display 1,2 Line/Loop Status” . This will take you to a screen similar to the 1. Toggle the front panel “Local/Normal/Remote” switch to the Line/Loop Status Monitor Screen (below). right hand side to the “Local” position. 2. Activate the LL lead from the DTE (Note:
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5.3.2 Remote Digital Loopback (RDL) RDL Test Procedure Once LAL is activated, the “Test” LED should be lit. Perform a BER The Remote Digital Loopback (RDL) test checks the performance of (bit error rate) test on the system, using BER testers on both ends. If both the local and remote Model 2500RC Series', and the the BER test equipment indicates a fault and the Local Analog communication link between them. Any characters sent to the remote Loopback test was successful for both Model 2500RC
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5.4 THE V.52 BER TEST PATTERN GENERATOR 5.5 SWITCHED 56 DIALING COMMANDS (MODELS 2510RC & 2520RC) The Model 2500RC Series has a built-in test pattern generator and detector. It can be invoked at both ends of a link simultaneously (using CAUTION! For proper Switched 56 operation, you must enable two operators) or it can be invoked in conjunction with the LAL or RDL the Circuit Assurance and Force RTS options as described in tests (using one operator). The following example requires two Sectio
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APPENDIX A Read Stored Number SPECIFICATIONS Selecting item 2 in the Dial Menu lets you view the phone number DDS Type: Dedicated currently stored in the Model 2500RC Series non-volatile memory. Transmission Format: Asynchronous, synchronous Dial New Number Selecting item 3 in the Dial Menu lets you dial a number other than Interface: RS-232 and V.35 the one stored in non-volatile memory. When you select this menu item, the Model 2500RC Series responds with this prompt: Standards: AT&T 62310
