Contents

HP E1312A/E1412A User’s Manual and SCPI Programming Guide

 

Edition 4

Warranty .......................................................................................................................

9

Safety Symbols ...........................................................................................................

10

WARNINGS ...............................................................................................................

10

HP E1312A Declaration of Conformity .....................................................................

11

HP E1412A Declaration of Conformity .....................................................................

12

Reader Comment Sheet ..............................................................................................

13

Chapter 1

 

HP E1312A and HP E1412A Multimeter Module Setup .........................................

15

Using This Chapter .....................................................................................................

15

General Information ............................................................................................

15

Setting the Module Address Switch............................................................................

16

Interrupt Priority .........................................................................................................

17

Setting the Line Frequency Reference........................................................................

17

Checking the Line Frequency Reference ............................................................

17

Multimeter Functional Connections ....................................................................

19

Initial Operation ..........................................................................................................

22

Chapter 2

 

HP E1312A/E1412A Multimeter Application Information .....................................

25

Using This Chapter ....................................................................................................

25

Measurement Tutorial.................................................................................................

25

DC Voltage Measurements .........................................................................................

25

Thermal EMF Errors ...........................................................................................

25

Loading Errors (dc volts) ....................................................................................

26

Leakage Current Errors .......................................................................................

26

Rejecting Power Line Noise Voltages ................................................................

27

Common Mode Rejection (CMR) .......................................................................

27

Noise Caused by Magnetic Loops .......................................................................

28

Noise Caused by Ground Loops ..........................................................................

28

Resistance Measurements ...........................................................................................

29

4-Wire Ohms Measurements ...............................................................................

29

Removing Field Wiring Resistance Errors in 2-Wire Ohms Measurements ......

30

Power Dissipation Effects ...................................................................................

31

Settling Time Effects ...........................................................................................

31

Errors in High Resistance Measurements ...........................................................

31

Making High-Speed DC and Resistance Measurements .....................................

31

DC Current Measurement Errors ................................................................................

32

True RMS AC Measurements.....................................................................................

32

Crest Factor Errors (non-sinusoidal inputs) ........................................................

33

Loading Errors (ac volts) .....................................................................................

34

AC Measurements Below Full Scale ..................................................................

34

Function and Range Change Internal Offset Correction .....................................

34

Low-Level Measurement Errors .........................................................................

35

AC Turnover Errors ............................................................................................

35

AC Current Measurement Errors ................................................................................

36

Making High-Speed AC Voltage or Current Measurements......................................

36

Contents 1