Contents
Main
256-kbps Line Driver
(V.35, RS-530, or X.21)
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256-KBPS LINE DRIVER (V.35, RS-530, ORX.21)
Safety Warnings
Telecommunication Safety
FCC Part 15 User Information
Warning per EN 55022
Declaration of Conformity/Supplementary Information
Declaration of Conformity
Supplementary Information
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NOM STATEMENT
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CONTENTS
Contents
1. Specifications
CHAPTER 1: Specifications
2. Introduction
2.1 Physical Description
CHAPTER 2: Introduction 2.2 Functional Description
Figure 2-1. Line driver block diagram.
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CHAPTER 2: Introduction
2.3 Applications
Figure 2-2. Point-to-point application.
Figure 2-3. Tail-circuit application.
Figure 2-4. Multipoint application.
256-kbps Line Driver
CHAPTER 3: Configuration
3. Configuration
3.1 Placement of the Standalone Version
3.2 Installing the Card Version in the RackNest 2/14
WARNING!
CHAPTER 3: Configuration 3.3 Configuring the Standalone or Card Version
Table 3-1. User-configurable options.
Table 3-1 (continued). User-configurable options.
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256-KBPS LINE DRIVER (V.35, RS-530, ORX.21)
WARNING: HIGH VOLTAGE!
4. Installation
4.1 Installing the Standalone Version in 19-Inch Racks
Figure 4-1. Installing a single unit in a 19-inch rack.
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Table 4-1. Descriptions of RackNest 2/14 components. Item Control, Indicator, or Connector Function
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Table 4-3. Pinout of the RackNest 2/14s DB25 connector when ME445C-35 is installed.
Table 4-4. Pinout of the V.35 standalones M/34 connector.
Table 4-5. Pinout of the RackNest 2/14s DB25 connector when ME445C-X21 is installed.
4.3 Connecting Data Cables
WARNING!
256-KBPS LINE DRIVER (V.35, RS-530, ORX.21)
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5. Operation
5.1 Controls and Indicators
Figure 5-1. The front panel of the standalone line driver.
Figure 5-2. The front panel of the rackmount card line driver.
Table 5-1. The controls.
CHAPTER 5: Operation
Table 5-2. The indicators.
5.2 Operating Procedure
6. Troubleshooting
6.1 Loop Tests
6.2 The Bit-Error-Rate Tester (BERT)
Figure 6-1. BERT using loops.
Figure 6-2. Two line drivers doing end-to-end BERT.
6.3 The Modem Self-Test
Figure 6-3. Modem self-test.
6.4 Local Analog Loopback
Figure 6-4. Local analog loopback.
6.5 Remote Digital Loopback
Figure 6-5. Remote digital loopback.
6.6 Local Digital Loopback
Figure 6-6. Local digital loopback.
6.7 Calling Black Box
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Appendix: Maximum Distances
APPENDIX: Maximum Distances