Equipment information
Tele-Path Instruments 550B Communications Test Set
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Model:
550B
Date:
1995
Category:
Group:
Description:
ISDN PORTABLE TEST SET
Information
The Tele-Path Model 550B ISDN Portable Test Set is a compact, battery operated device used to conduct testing of ISDN circuits at the customer premise, the input and output of the ISDN repeater housing, or at the main distribution frame, The Model 550B is designed both for rugged durability and ease of use, with menu driven screens.
The Model 550B’s operating modes allow it to function as an NT1 (Network Termination), as TE (Terminal Equipment), as both (NT1/TE), or as LT (Line Terination). It may be connected to either the DSL (Digital Subscriber Loop) U interface, or the SFT Interface. It is compatible with AT&T AMI, and 2B1Q DSL interfaces, and EBS (P-Phone) and POTS Line Interfaces. The Model 550B allows placement of additional loss on the circuit, either at the "LINE" U Interface or the "S/T" Interface for margin analysis testing.
The Model 550B ISDN Portable Test Set allows you to select a loopback for either of the B channels, or for the full bandwidth (2B+D). The Model 550B also responds to network controlled loopbacks at the NT1.
ISDN testing and measurements made by the Model 550B include:
• FEBE (Far End Block Errors) and FEBE Errored Seconds in all ISDN "U" Interface modes,
• CRC Errors and CRC Errored Seconds with 2B1Q Interface selected,
• AMI Frame Errors and Frame Errored Seconds with AT&T AMI Interface selected,
• S/T FRAME Errors and Errored Seconds, and Bipolar Violations (BPV’s) and Errored Seconds on the S/T Interface in NT1 and TE modes,
• Bearer Service selections:
- Circuit-Switched Voice/Data and
- Packet Data,
• Dual Call Testing,
• Bit Error Testing,
• D-Channel message analysis,
• Cause Messages,
• Layer 1, 2, 3 States,
• Optional Service Testing:
- EBS (P-Phone) and
- POTS,
• Pre-Qualification of Loop:
- LT Emulation, generating Layer 1 2B1Q signal, and
- Generation of 40KHz Test Tone
Manual Type:
Service Manual
Pages:
165
Size:
4.46 Mbytes (4675454 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
1995 01 01
Quality:
Electronic document, no scan, very well readable.
Upload date:
2017 02 04
MD5:
b80bc6ab94b6887200b6cf89f3680b97
Downloads:
494
Information
List of Figures
List of Tables
Safety Summary
Table of Contents
Specifications
General Product Description
User Interface
Menus
Indicators
General Purpose Knob
GUI
Signal Acquisition System
Horizontal System
Trigger System
Acquisition Control
On-Board User Assistance
Help
Autoset
Measurement Assistance
Cursor
Measure
Digital Signal Processing (DSP)
Storage and I/O
Display
Zoom
Nominal Traits
Warranted Characteristics
Typical Characteristics
Operating Information
Using this Manual
Before Servicing
Strategy for Servicing
Manual Structure
Manual Conventions
Modules
Safety
Symbols
Tektronix Service
Warranty Repair Service
Repair or Calibration Service
Self Service
Finding Other Information
General Information
Supplying Operating Power
Power Cord Information
Operating Voltage
Memory Backup Power
Operating Environment
Operating Temperature
Ventilation Requirements
Applying and Interrupting Power
Power On
Power Off
Repackaging Instructions
Installed Options
General Operating Instructions
Screen Layout
Basic Procedures
How to Power On
How to Use Help
How to Use the Status Menu
How to Set Functions
How to Set Complex Functions
Theory of Operation
Circuit Description
Logic Conventions
Module Overview
Performance Verification
Brief Procedures
General Instructions
Conventions
Self Tests
Verify Internal Adjustment, Self Compensation,
and Diagnostics
Functional Tests
Verify All Input Channels
Verify the Time Base
Verify the Main and Delayed Trigger Systems
Verify the File System (Optional on TDS 620A and 640A) . . .
Performance Tests
Prerequisites
Equipment Required
Test Record
Signal Acquisition System Checks
Check Accuracy of Offset (Zero Setting)
Check DC Gain and Voltage Measurement Accuracy
Check Analog Bandwidth
Check Delay Between Channels
Time Base System Checks
Check Accuracy for Long-Term Sample Rate, Delay Time,
and Delta Time Measurements
Trigger System Checks
Check Accuracy (Time) for Pulse-Glitch or Pulse-Width
Triggering
Check Accuracy, Trigger-Level or Threshold, DC
CoupledSensitivity, Edge Trigger, DC Coupled
Output Signal Checks
Check O u t p u t s — A U X 1 (for TDS 620A) or CH 3 (for
TDS 640A or 644A), Main and Delayed Trigger
Check Probe Compensator Output
Option 05 Video Trigger Checks
Check Video Trigger
Adjustment Procedures
Adjustment Procedures
Requirements for Performance
Personnel
Warm-Up Period
Access
System
Optional Peripherals
Test Equipment
Usage
Performing the Adjustments
Complete Adjustment
Individual Adjustments
Partial Adjustment
Adjustment After Repair
Adjustment Dependencies
Equipment Required
Adjustment Instructions
Hardware Installation
Software Installation
Software-Based Adjustments
Probe Adjustment for the P6139A Probe
Compensate the Probe
Measure Probe Bandwidth
Adjust the Probe — High Frequency Response
Display Assembly Adjustment
Brightness and Contrast Adjustment
(TDS 620A and 640A - Monochrome - Only)
Rotation, Brightness, and Contrast Adjustment
(TDS 644A - Color - Only)
Maintenance Information
Procedures Not In This Section
Preventing ESD
Precautions
Susceptibility to ESD
Inspection and Cleaning
General Care
Inspection and Cleaning Procedures
Inspection — Exterior
Cleaning Procedure — Exterior
Inspection — Interior
Cleaning Procedure — Interior
Lubrication
Removal and Installation Procedures
Preparation — Please Read
List of Modules
General Instructions
Summary of Procedures
Access Procedure
Procedures for External Modules
Front-Panel Knobs
Line Fuse and Line Cord
EMI Gaskets
Rear Cover and Cabinet
Front Cover, Trim Ring, Menu Buttons, and Attenuator Panel
A12 Front-Panel Assembly
Display-Frame Assembly
Cabinet Modules
Procedures for Outer-Chassis Modules
A15 Attenuator Assembly
Fan
A14 D1 Bus and Analog-Power and Digital-Power Cables
..
A23 SerPar Board — RS232/Centronics Hardcopy Interface
A29 Video Trigger Board
A11 Processor/Display Board
Top Cover and Board Brackets
Rear-Panel Cables
A10 Acquisition Board
Floppy Disk
Rear Chassis
Procedures for Inner-Chassis Modules
A16 Low Voltage Power supply
A20 or A30 Display Assembly and Supply Fuse
Front Subpanel
Main Chassis
Disassembly for Cleaning
Troubleshooting
Diagnostics
Firmware Updates