Table Of Contents - Extech Instruments EX623A User Manual

Table of contents

1 Introduction........................................................................1
2 Safety ................................................................................2
2.1 Safety Notes.............................................................. 2
2.2 International Safety Symbols ......................................... 2
2.3 Maximum Input Ranges ............................................... 4
2.4 FCC Compliance ........................................................ 4
3 Product Description ............................................................5
3.1 Meter Front ............................................................... 5
3.2 Meter Back ............................................................... 6
3.3 Button Descriptions..................................................... 6
3.4 Display Icon Descriptions ............................................. 7
4 Meter Power .......................................................................8
4.1 Automatic Power Off (APO)........................................... 8
5 Operation ...........................................................................9
5.1 Input Shutter Switch .................................................... 9
5.2 Automatic and Manual Range ..................................... 10
5.3 LCD Backlight.......................................................... 10
5.4 Maximum and Minimum Readings................................ 10
5.5 Data Hold ............................................................... 10
5.6 Non-Contact Voltage Detector ..................................... 11
5.7 AC/DC Current Clamp Measurements........................... 12
5.7.1
5.7.2
5.7.3
5.7.4
5.7.5
5.8 AC/DC Voltage Measurements .................................... 14
5.8.1
5.8.2
5.8.3
5.9 Low Impedance Voltage Measurements (Lo Z)................ 15
5.10 Resistance Measurements ......................................... 16
5.11 Continuity Test ......................................................... 17
5.12 Diode Test............................................................... 18
5.13 Capacitance Measurements ....................................... 20
5.14 Frequency and Duty Cycle Measurements ..................... 21
#NAS100174; r. AA/97578/97616; en-US
Polarity Considerations ................................... 12
Frequency of Current Measurements.................. 13
Peak Max ..................................................... 13
Inrush AC Current Measurements...................... 13
DC Current Zero ............................................ 13
Frequency of Voltage Measurements.................. 14
Peak Max ..................................................... 15
Low Pass Filter Function .................................. 15
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