Multi-Tech Systems MT56DSU-S manual Back Panel, Power Connector, 2 RS232 Connector, Line Connector

Page 12

Chapter 2 - Front & Back Panel Descriptions

2.3Back Panel

All the cable connections, including one power connection and two signal connections, are made at the back panel of the DSU. The RS232 connector is used to connect the DSU to an RS232 or V.35 device, and the LINE connector connects to a DDS or LADS (Local Area Data Set) circuit. The cable connections are shown in Figure 2-2 and defined in the following sections.

 

RS232

 

 

 

POWER

LINE

Figure 2-2. Back Panel

2.3.1 POWER Connector

The POWER connector is used to connect the external wall type transformer power supply to the DSU. The wall transformer plugs directly into an AC outlet.

2.3.2 RS232 Connector

The RS232 (Data) connector is used to connect the DSU to a sync device, such as, multiplexers, routers, or legacy equipment such as cluster controllers. The RS232 connector is a DB-25 female connector located on the back panel of the DSU.

The RS232 data connector interface can be switched to a V.35 interface. For the V.35 interface, an internal data shunt has to be moved from the default RS232 position to the V.35 position. To change the shunt, refer to the "Shunt" paragraph in this chapter. Also refer to Appendix A for special cabling requirements for the V.35 mode.

2.3.3 LINE Connector

The LINE connector is used to connect the DSU to a 56K DDS circuit or LADS. This connector is an RJ-48 (keyed) jack on the back panel of the unit.

12

Page 11 Page 13
Image 12
Page 11 Page 13
Contents MT56DSU-S Syncronous 56K bps Data Service Unit User GuideRevision Date Description Contents Service & Warranty Introduction Introduction About This ManualDescription CSU/DSU BasicsDSU Functions CSU FunctionsFeatures Specifications Front & Back Panel Descriptions Front Panel Front PanelPower Connector 2 RS232 ConnectorLine Connector Back PanelSwitch Settings Switch Settings Mode Position DescriptionShunts ShuntsUnpacking & Setup Telecom Safety Warnings UnpackingSetup Back Panel ConnectionsV.35 Shunt Diagnostics Loopback Test Diagram Loopback TestLine Loopback Test DSU Loopback TestDSU Back-to-Back Test Diagram DSU Back-to-Back TestService & Warranty Multi-Tech Systems, Inc. Warranty & Repairs Policies Warranty2 U.S. and Canadian Customers International Customers outside U.S.A. and Canada International DistributorsRepair Procedures for U.S. and Canadian Customers Repair Procedures for International CustomersRepairs Technical Support Internet SiteAppendix Appendix a Application Examples IntroductionLocal Area Data Set Application DDS Point-To-Point ApplicationDDS Multipoint Polled Application Figure A-3. DDS Multipoint Polled ApplicationAppendix B Interface Signals and Connector Pinouts RJ-48 ConnectorDB25S Connector Pin Description SignalDB25S Connector with V.35 Interface Pin DescriptionLoopback Cable MTS P/N Build InstructionsFigure B-7. Back-toBack Cable Connector Back-To-Back Cable MTS P/NAppendix C Regulatory Information FCC Regulations for Telephone Line InterconnectionCanadian Limitations Notice S000327A
Top Page Image Contents