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Paradyne Dual DSU 7511 Instructions Manual

Paradyne dual dsu startup instructions
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Model 7511 Dual DSU
Startup Instructions
Document Number 7511-A2-GN10-10
January 1999
Product Documentation on the World Wide Web
Preparation

Package Checklist

7511-A2-GN10-10
TM
We provide complete product documentation online. This lets you search the
documentation for specific topics and print only what you need, reducing the
waste of surplus printing. It also helps us maintain competitive prices for our
products.
Complete documentation for this product is available at www.paradyne.com.
Select Service & Support
Devices.
Select the following document:
7511-A2-GB20
Model 7511 Dual DSU User's Guide
To request a paper copy of a Paradyne document:
Within the U.S.A., call 1-800-PARADYNE (1-800-727-2396)
Outside the U.S.A., call 1-727-530-8623
Make sure you have:
A clean, well-lit, and ventilated site that is free from environmental extremes.
One to two feet of clearance for cable connections.
An operable network connection.
Verify that your package contains the following:
A Model 7511 DSU
A backplate bearing two 25-pin connectors
Two V.35 adapter cables
January 1999
Technical Manuals
Subrate Digital Access
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Summary of Contents for Paradyne Dual DSU 7511

  • Page 1: Package Checklist

    It also helps us maintain competitive prices for our products. Complete documentation for this product is available at www.paradyne.com. Select Service & Support Devices.

  • Page 2: Cables You May Need To Order

    Cables You May Need to Order You will need cables to connect your Network Interface Module (NIM) to the network and your 7511 DSUs to DTEs. For further information refer to the documentation shipped with your NIM, and Appendix A, Cables and Pin Assignments, in the User’s Guide.
  • Page 3 Figure 1. Model 7511 Switch Locations Table 1. Configuration Options (1 of 5) Switch Line Rate S1-1 (DSU A) S3-1 (DSU B) 7511-A2-GN10-10 97-15396 Options and Usage DDS or LADS line rate. 56 kbps The line rate is 56 kbps. 64 kbps LADS: The line rate is 64 kbps.
  • Page 4 Table 1. Configuration Options (2 of 5) Switch TX Timing Source S1-2 & S1-3 (DSU A) S3-2 & S3-3 (DSU B) Ten-Minute Test Abort Timer S1-4 (DSU A) S3-4 (DSU B) Network-Initiated DSU Loopback S1-5 (DSU A) S3-5 (DSU B) Options and Usage The timing source for the DSU.
  • Page 5 Table 1. Configuration Options (3 of 5) Switch 64CC Data Scrambler S1-6 (DSU A) S3-6 (DSU B) V.54 Sequence Detection S1-7 (DSU A) S3-7 (DSU B) Invert TX Clock S1-8 (DSU A) S3-8 (DSU B) 7511-A2-GN10-10 Options and Usage Determines whether the DSU scrambles data to minimize the possibility of the remote DSU falsely recognizing a loopback command.
  • Page 6 Table 1. Configuration Options (4 of 5) Switch S2-1 & S2-2 (DSU A) S4-1 & S4-2 (DSU B) S2-3 (DSU A) S4-3 (DSU B) S2-4 (DSU A) S4-4 (DSU B) Options and Usage Determines the operation of interchange circuit CT106, Clear to Send (CTS).
  • Page 7 Table 1. Configuration Options (5 of 5) Switch S2-5 (DSU A) S4-5 (DSU B) 511 Test Pattern Generation Monitoring S2-6 (DSU A) S4-6 (DSU B) CT141 S5-1 (DSU A) S5-3 (DSU B) CT140 S5-2 (DSU A) S5-4 (DSU B) 7511-A2-GN10-10 Options and Usage Determines the operation of interchange circuit CT107, Data Set Ready (DSR).

  • Page 8: Installing The Rear Connector Plate

    Installing the Rear Connector Plate Procedure To install the rear connector plate: 1. At the rear of the carrier, place the tab on the connector plate in its slot in the carrier’s backplane. The connector plate must use the same slot position intended for the DSU card.

  • Page 9: Installing The Dsu Card

    Installing the DSU Card Procedure To install the Model 7511 Dual DSU: 1. Using a Phillips screwdriver, loosen the screw holding the circuit pack lock. Rotate the lock to the open position and open the latch. 2. At the front of the carrier, hold the circuit card vertically with the latch on its faceplate in the open position.
  • Page 10 3. Slide the circuit card into the slot and press until the connectors are seated firmly into the back of the carrier. 4. If power is applied to the carrier: — All LEDs on the card light up momentarily. — The card completes its power-up self-test. —...

  • Page 11: Installing The Network And Dte Cables

    Installing the Network and DTE Cables Procedure To install the cables: 1. Note the location of the 7511 Dual DSU circuit cards in the carrier (Slots 1–8, Slots 9–16, or all slots). 2. Connect network cables to the appropriate NIM and backplane connector according to the following table.

  • Page 12: Troubleshooting

    Troubleshooting If the 7511 Dual DSU does not turn on the OK LED after its power-up self-test, refer to the following table. Symptom No power, or LEDs are not solidly lit. Power-up self-test fails. Only the Alarm LEDs are on after power-up.

  • Page 13: Important Safety Instructions

    Symptom Not receiving data; DSU is not responding. The Test LED does not light up when you attempt to start a Remote Digital Loopback; the RL LED turns off. An LED is not lit. The Test Mode switch has no effect. Unexpected behavior in general.
  • Page 14 The authority to operate this equipment is conditioned by the requirements that no modifications will be made to the equipment unless the changes or modifications are expressly approved by Paradyne Corporation. WARNING: To Users of Digital Apparatus in Canada: This Class A digital apparatus meets all requirements of the Canadian interference-causing equipment regulations.

  • Page 15: Government Requirements

    Government Requirements Certain governments require that instructions pertaining to connection to the telephone network be included in the installation and operation manual. Specific instructions are listed in the following sections. Notice to Users of the Telephone Network in the United States This equipment complies with Part 68 of the FCC rules.
  • Page 16 Paradyne worldwide office locations, use one of the following methods: Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com Via Telephone: Call our automated call system to receive current information via fax or to speak with a company representative.

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