Instruction/ maintenance manual of the product 2703-X21 Patton electronic
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USER MANUAL MODEL 2703-X21 G.703/E1 Digital Modem SALES OFFICE (301) 975-1000 TECHNICAL SUPPORT (301) 975-1007 http://www .patton.com Part# 07M2703-X21-C Doc# 031 1 1 1UC Revised 6/19/98 CERTIFIED An .
1.0 W ARRANTY INFORMA TION Patton Electronics warrants all Model 2703-X21 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.
Switch Set S1 The configuration switches on S1 set clocking, rate adaptation, loopback enable, and data invert. The default settings are summarized in the table below . S1-1: Master/Slave Clock The setting for switch S1-1 determines whether the Model 2703- X21 provides the master clock, or is slaved to another clock source.
S1-2 and S1-3: Rate Adaptation Switches S1-2 and S1-3 are set in combination to allow the Model 2703-X21 to adapt to terminal devices running at data rates of less than 2.048 Mbps (The network rate remains 2.048 Mbps regardless of the terminal rate adaptation setting).
LK1: 75 Ohm T ransmit Shield-to-Ground Connection This setting determines whether the shield of the 75 Ohm (coax) transmit cable is connected to earth ground. This connection must be made when operating in 75 Ohm (unbalanced) mode. Conversely , this connection must not be made when operating in 120 Ohm (balanced) mode.
LK5: Configuration Auto-Sense This setting determines whether the host can automatically sense the configuration of the Applique. The operation of the Applique is not affected by this jumper setting. Auto-sense should be enabled when operating in 75 Ohm (unbalanced) mode.
4.0 INST ALLA TION Once the Model 2703-X21 is properly configured, it is ready to connect to your system. This section tells you how to properly connect the Model 2703-X21 to the G.703 network and terminal device interfaces. 4.1 CONNECTION TO THE G.703 NETWORK The Model 2703-X21 supports 2.
5.0 OPERA TION Once the Model 2703-X21 is properly configured and installed, it should operate transparently . This sections describes power-up, reading the LED status monitors, and using the built-in loopback test modes. 5.1 POWER-UP T o apply power to the Model 2703-X21, first be sure that you have read Section 3.
APPENDIX B MODEL 2703-X21 PIN CONFIGURA TIONS APPENDIX A P A TTON MODEL 2703 SPECIFICA TIONS Network Interface: G.703 Network Rate: 2.048 Mbps Network Connectors: T wo BNC (75 Ohm) and one modular RJ-45 connector (120 Ohm) T erminal Interface: X.21 on female DB-15 connector T erminal Rate: 2.
APPENDIX C F ACTOR Y P ARTS AND ACCESSORIES C-1 Basic Standalone Units The Patton Model 2703-X21 standalone digital modem is available in three versions, depending upon the power supply installed. The Standard and Universal Interface versions are supplied with a power cord, which must be specified in the model number when ordering .
An important point after buying a device Patton electronic 2703-X21 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Patton electronic 2703-X21 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Patton electronic 2703-X21 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Patton electronic 2703-X21 you will learn all the available features of the product, as well as information on its operation. The information that you get Patton electronic 2703-X21 will certainly help you make a decision on the purchase.
If you already are a holder of Patton electronic 2703-X21, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Patton electronic 2703-X21.
However, one of the most important roles played by the user manual is to help in solving problems with Patton electronic 2703-X21. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Patton electronic 2703-X21 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
