Chapter 3
Making Measurements
Title Page
Introduction.......................................................................................................... 3-3
Making Connections to the Multimeter -- General Guidelines ............................ 3-4
Using the Measurement Functions....................................................................... 3-5
DC Voltage...................................................................................................... 3-5
Measuring DC Voltage.................................................................................... 3-7
Making Input Connections.......................................................................... 3-7
AC Voltage...................................................................................................... 3-8
Measuring AC Voltage.................................................................................... 3-11
Induced Interference .................................................................................... 3-11
Common Mode Rejection ........................................................................... 3-11
Lead Considerations .................................................................................... 3-11
Resistance ........................................................................................................ 3-11
High Voltage Ohms......................................................................................... 3-13
True Ohms....................................................................................................... 3-15
Measuring Resistance...................................................................................... 3-17
2-Wire Measurements ................................................................................. 3-17
4-wire Measurements .................................................................................. 3-17
4-wire High Resistance Measurements ....................................................... 3-18
4-wire Resistance Zero................................................................................ 3-18
Ω Guard....................................................................................................... 3-19
DC Current ...................................................................................................... 3-21
Measuring DC Current .................................................................................... 3-22
AC Current ...................................................................................................... 3-23
Measuring AC Current .................................................................................... 3-24
Temperature ..................................................................................................... 3-25
Measuring Temperature ................................................................................... 3-28
Multimeter Inputs ................................................................................................ 3-29
Input ................................................................................................................. 3-29
Using the INPUT Key ..................................................................................... 3-29
SCAN OPERATIONS..................................................................................... 3-30
Tru Ohms Ratio........................................................................................... 3-31
Monitoring Modes ............................................................................................... 3-32
Monitor Key .................................................................................................... 3-32
Displaying Signal Frequency........................................................................... 3-32
Displaying Standard Deviation ........................................................................ 3-32
Devn Menu.................................................................................................. 3-32
3-1
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