Equipment information

Tele-Path Instruments 550B Communications Test Set
Manufacturer:
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

show more

Service Manual
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:
493

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

show more