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Mohr CT100B Series User Manual

Mohr CT100B Series
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Operator’s Manual:
CT100B Series
TDR Cable Analyzers
For Software Version 2.24.5
Part No.: CT100B-M-OM-012
CAGE Code: 4JEE1
Revision Date: 2023.03.07

Table of Contents

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Mohr CT100B Series Specifications

General IconGeneral
BrandMohr
ModelCT100B Series
CategoryMeasuring Instruments
LanguageEnglish

Summary

General Information

Product Description

Overview of the CT100B TDR Metallic Cable Analyzer's capabilities and applications.

Power Requirements

Details on operating the CT100B using AC adapter or internal NiMH batteries.

Unpacking and Initial Inspection

Instructions for inspecting the CT100B package for damage and verifying contents.

Safety Summary

Static Charge Precautions

Essential steps to discharge static electricity before connecting cables to prevent damage.

AC Power Source Safety

Guidelines for using the correct AC power adapter and avoiding electrical shock.

Grounding the CT100B

Information on proper grounding for electrical safety and preventing measurement errors.

Connecting Cables to the Test Port

Critical safety instructions for connecting cables to prevent damage to sampling electronics.

Getting Started

Handling the CT100B

Guidelines for safely handling the instrument in various environments.

Powering the CT100B

Instructions on how to power on and operate the CT100B using AC or battery.

Front Panel Controls and Connectors

Detailed description of all buttons, knobs, and connectors on the front panel.

Menu Selections and Function Buttons

Explanation of the CT100B's menu system and function button operations.

Operating Instructions

Connecting to the Cable or Device-Under-Test (DUT)

Guidance on selecting appropriate connections for accurate TDR testing.

Common Types of TDR Cable Faults

Identification of common cable faults like opens, shorts, and partial faults in TDR traces.

Change Velocity of Propagation (Vp)

Procedure for setting or finding the Velocity of Propagation for accurate measurements.

Distance-to-Fault (DTF) Measurements

Steps for measuring the distance to a fault in a cable using TDR.

Scan a Cable

Instructions on performing cable scans for detailed analysis and comparison.

Working With Traces

How to select, annotate, save, and manage TDR traces on the instrument.

Math Functions

Difference (Subtraction) Traces

Creating traces by subtracting one trace from another to highlight changes.

Return Loss (S11) Traces

Procedure for creating S11 return loss plots using calibration standards.

Normalized TDR Traces

Creating normalized TDR traces for improved impedance accuracy and aberration reduction.

Layer-Peeling (Dynamic Deconvolution) Traces

Technique to extract real reflection coefficients and impedance by removing multiple reflections.

TDR Measurement Theory

Time-Domain Reflectometry (TDR)

Fundamental principles of TDR measurement and waveform construction.

Common Types of TDR Cable Faults

Detailed explanation of how various cable faults appear on a TDR trace.

Velocity of Propagation (VoP, Vp)

Understanding Velocity of Propagation and its importance in TDR measurements.

Distance-to-Fault (DTF) and Cable Length

The relationship between DTF, cable length, Vp, and the speed of light.

Impedance

How TDR instruments calculate impedance from reflection coefficients.

Specifications

Electrical Specifications

Detailed electrical characteristics and performance parameters of the CT100B.

Environmental Specifications

Operating and non-operating temperature ranges for the instrument.

Operator Performance Checks

Required Equipment

List of necessary equipment for performing operator performance checks.

Operator Performance Checks

Procedures to verify the calibration and performance of the CT100B unit.

Maintenance and Service Instructions

Battery Removal/Replacement

Step-by-step guide for safely removing and replacing the internal battery pack.

Calibration and Calibration Interval

Recommended calibration interval and procedures for scheduling calibration.

Operator Troubleshooting

Power On Test

Procedure to verify the instrument powers on correctly.

Functional Block Diagram and Troubleshooting Flowcharts

Diagrams and flowcharts to assist in diagnosing instrument problems.

Parts List

List of subassemblies and parts for the CT100B instrument.