Operation Manual

6 GMC-I Messtechnik GmbH
Table of Contents
Contents Page Contents Page
1 Safety Features and Precautions ....................................... 8
1.1 Use for Intended Purpose ................................................................10
1.2 Meanings of Danger Symbols ..........................................................10
1.3 Meanings of Acoustic Warning Signals ............................................10
2 Operating Overview
– Connections, Keys, Rotary Switch, Symbols
..................... 12
3 Initial Start-Up .................................................................. 16
3.1 Batteries ........................................................................................16
3.2 Activation .......................................................................................16
3.3 Setting the Operating Parameters ....................................................16
3.4 Switching the Instrument Off ...........................................................17
4 Control Functions ............................................................. 18
4.1 Selecting Measuring Functions and Measuring Ranges .....................18
4.1.1 Automatic Range Selection .............................................................18
4.1.2 Manual Measuring Range Selection .................................................18
4.1.3 Quick Measurements ......................................................................19
4.2 Zero Offset / Relative Measurements ...............................................19
4.3 Display (LCD) .................................................................................20
4.3.1 Digital Display ................................................................................20
4.3.2 Analog Display ...............................................................................20
4.4 Measured Value Storage: DATA (auto-hold / compare) ......................21
4.4.1 Saving Minimum and Maximum Values – MIN/MAX Function ............22
4.5 Measurement Data Recording .........................................................23
5 Measurements ................................................................. 26
5.1 Voltage Measurement .....................................................................26
5.1.1 Direct and Pulsating Voltage Measurement, V DC and V (DC+AC) .....27
5.1.2 Alternating Voltage and Frequency Measurement V AC and Hz
with Selectable Low-Pass Filter .......................................................28
5.1.3 Transient Overvoltages ...................................................................30
5.2 Resistance Measurement, Ohm ......................................................31
5.3 Temperature Measurement – Temp RTD .........................................32
5.3.1 Measurement with Resistance Thermometers ..................................32
5.4 Continuity Test ..............................................................................34
5.5 Diode Testing with 1 mA Constant Current .....................................35
5.6 Capacitance Measurement ............................................................36
5.6.1 Cable Length Measurement m ........................................................36
5.7 Current Measurement ....................................................................38
5.7.1 Direct and Pulsating Current Measurement, Direct Connection,
A DC and A (DC+AC) ......................................................................39
5.7.2 Alternating Current and Frequency Measurement,
Direct Connection, A AC and Hz ......................................................40
5.7.3 Direct and Pulsating Current Measurement
with Clip-On Current Sensor, A DC and A (DC+AC) ..........................41
5.7.4 Alternating Current Measurement with Clip-On Current Sensor,
A AC and Hz ..................................................................................42
6 Measurements in Symmetrical Copper Cable Networks .. 44
6.1 “R
SL
” Loop Impedance Measurement with 2 mA Constant Current ....44
6.2 Detection of Interference Voltages ...................................................45
6.3 Insulation Resistance Measurement:
in Telecommunications Networks – MΩISO Function .......................45
6.3.1 Connecting the Measurement Cables ..............................................46
6.3.2 Selection of Test Voltage or Galvanic Signature ................................46
6.3.3 Performing Insulation Resistance Measurements ..............................47
6.3.4 Ending the Measurement and Discharging .......................................48