Microtest OMNIScanner2 Guide de l'utilisateur télécharger pdf (Page 119)

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OMNIScanner User Guide

High Voltage Input Protection

• The test interface withstands input hazard conditions that arise from

normal telephone interfaces (48 VDC at less than 80 mA) or 24 VAC

power used to power many telephone keysets. The unit detects when a

voltage of greater than ±15 volts is applied on the inputs and sounds a

warning to alert the user to remove the hazard condition immediately to

prevent possible damage to the input circuits.

Note: Measurements

cannot be performed when hazard conditions are present.

1 2 ... 114 115 116 117 118 119 120 121 122 123 124 ... 132 133

OMNIScanner 1
Scanner2 2
Scanner LT 2
Contents 3
Chapter 1 - Introduction 7
OMNIFiber 8
Tools Software 8
OMNIScanner’s Display 9
OMNIScanner’s Keypad 10
A UTOTES T 11
OMNIRemote’s LED Indicators 13
OMNIRemote Keys 13
When To Use OMNIRemote 14
OMNIFiber MM LED Indicators 16
OMNIFiber SM LED Indicators 16
Editing With OMNIScanner 18
Editing Alphanumeric Fields 19
Technical Support 20
Product Versions 21
Chapter 2 - Getting Started 23
Twisted Pair Networks 23
Preparation 24
Certification 24
Completion 24
Setting the Reference 25
Project Selection 26
AUT OTES T 27
Basic Link 33
Permanent Link 34
Chapter 3 - Getting Started 35
Fiber Optic Networks 35
Preparing an Autotest 39
2 JUMPER METHOD AUTOTEST 39
1 JUMPER METHOD AUTOTEST 40
3 JUMPER METHOD AUTOTEST 40
Loopback Autotest using OMNI 41
Running a Fiber Autotest 42
Fiber Autotest Results 43
Chapter 4 - Setup 45
Set Reference 46
Autotests 47
Projects 51
Editing a Circuit ID 52
Configurations 54
Autotest Run Options 54
Autotest Save Options 55
User Options 56
Adapter Usage 57
Remote Info 57
Fiber Adapter Info 58
Format MMC 58
Regional Settings 58
Chapter 5 - Measurements 61
Measuring Fiber Optic Cabling 62
Measuring Coaxial Cabling 62
Selecting an individual Test 62
General Information 63
1x 2x 4x 10x 64
Length/Delay 65
Attenuation 67
Return Loss 68
ACR/Bandwidth 70
Resistance 71
Power Sum NEXT 71
Power Sum ELFEXT 72
Power Sum ACR 73
Power Meter 75
Coax Tests 76
Tracer/Toner 76
Chapter 6 - Diagnostics 79
Wiremap Displays 80
TDNXT Examples 83
Using TDRL to Diagnose a Link 86
TDRL Examples 86
Impulse Noise 88
Cable Trace 89
Office Locator 89
Scanner 90
Chapter 7 - Results 91
Viewing Autotest Results 92
Establishing the Reference 95
The Launch/Jumper Cable 96
The Reference Methods 96
One Jumper Reference Method 97
Two Jumper Reference Method 98
Three Jumper Reference Method 99
OMNIScanner User Guide 100
Scanlink 101
OMNIScanner User Guide 102
Chapter 11 - MultiMediaCard 105
MultiMediaCard Maintenance 106
The MMC Structure 106
Installing the USB Driver 107
Physical Characteristics 113
User Interface 113
Environmental 114
Serial Port 114
Test Functions 116
Wire Map 116
High Voltage Input Protection 119
Rechargeable Battery Pack 121
AC Connector 121
Battery Charging 122
Battery Tips 122
Criteria 123
OmniScanner User Guide 124
Appendix D - Cable Pin-Outs 125
Cable Pin-Out Signals 126
Index - 1 127
Index - 2 128
Index - 3 129

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Microtest OMNIScanner2 Guide de l'utilisateur Page 119

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