Agilent E1326B/E1411B 5 1/2 Digit Multimeter
User’s Manual
E1326-90009
Printed in USA
July 2004 E0704
*E1326-90009*
S1
Contents
HP E1326B/E1411B 5 1/2 Digit Multimeter User’s Manual
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Safety Symb ols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Reader Comment Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 1. Getti n g Started with the HP E1 326B/E1411B Multim e ter . . . . . . . . . . . 13
About This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Multimeter Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Function al Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Electrical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Introduction to Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Multimeter Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Resetting the Multimeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Making a Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Chapter 2. Configu r i n g the HP E1326B/E1411B Mul ti m e ter . . . . . . . . . . . . . . . . 21
About This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Setting the Logical Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . 22
VXIbus Interrupt Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
HP E1326B Internal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Installing the HP E1411B in a Mainframe . . . . . . . . . . . . . . . . . . . . . . 26
The Reference Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Input Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Input Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Connecting Multiplexers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Connecting Input Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Wiring Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Measurement Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Carrier Cable Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Additional Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Selecting VME RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Disabling Front-panel for Stand-alone Applications . . . . . . . . . . . . . . . . . 39
Chapter 3. Using the HP E1326B/E1411B Mul tim eter . . . . . . . . . . . . . . . . . . . . 41
About This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Using the Pr ograms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Making a Single Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Making a Burst of Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Making an Externally Triggered Burst of Measurements . . . . . . . . . . . . . . . . . 44
HP E1326B/E1411B 5 1/2 Digit Multimeter User’s Manual Contents 1
Making Multiple Burst Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Scanning a Channel List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Making Multiple Scans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Making Multiple Paced Scans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Making an Externally Triggered Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Scanning Sw itchbox Channels (E1326B/E1351A) . . . . . . . . . . . . . . . . . . . . 50
Scanning Sw itchbox Channels (E1411B/E1460A) . . . . . . . . . . . . . . . . . . . . 52
Multiple High-Speed Scans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Maximizing Measurement Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Changing the Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Using a PC, C Language, and the HP 82335 HP-IB Interface Card . . . . . . . . . . . 60
Maximizing Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Storing Readings in Shared Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Checking for Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Synchronizing the Multimeter with a Computer . . . . . . . . . . . . . . . . . . . . . 68
Additional Measurement Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Chapter 4. Understanding the HP E1326B/E1411B Multimeter . . . . . . . . . . . . . . . 75
About This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Using MEASure and CONFigure Commands . . . . . . . . . . . . . . . . . . . . . . 76
How to Make Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Using MEASure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Using CONFigure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Data Formats and Destinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Data Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Reading Destinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Reading Des tination Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Measurement Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
DC Voltage Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
RMS AC Voltage Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Resistance Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Temperature Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Specifying a Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Multimeter Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Autorange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Aperture and Integration Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Autozero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Offset Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Triggering the Multimeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
The Trigger Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
The Trigger Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
The Trigger Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
The Sample Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
The Sample Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
The Wait-For-Trigger State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Using a Sing le Trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Aborting a Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
2 Contents HP E1326B/E1411B 5 1/2 Digit Multimeter User’s Manual
Saving Multimeter Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
How to Save and Recall a Configuration . . . . . . . . . . . . . . . . . . . . . . . 114
Chapter 5. HP E1326B/E1411B Multimeter Command Reference . . . . . . . . . . . . . 117
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Command Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Common Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
SCPI Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Linking Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
SCPI Comman d Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
ABORt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
CALibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
:LFRequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
:LFRequency? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
:ZERO:AUTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
:ZERO:AUTO? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
CONFigure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
:FRESistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
:RESistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
:TEMPerature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
:VOLTage:AC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
:VOLTage[:DC] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
CONFigure? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
DIAGnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
:FETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
:FETS? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
DISPlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
:MONitor:CHANnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
:MONitor:CHANnel? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
:MONitor[:STATe] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
:MONitor[:STATe]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
FETCh? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
FORMat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
[:DATA] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
FORMat? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
INITiate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
[:IMMediate] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
MEASure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
:FRESistance? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
:RESistance? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
:TEMPerature? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
:VOLTage:AC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
:VOLTage[:DC]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
MEMory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
:VME:ADDRess . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
:VME:ADDRess? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
:VME:SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
:VME:SIZE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
HP E1326B/E1411B 5 1/2 Digit Multimeter User’s Manual Contents 3
:VME:STATe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
:VME:STATe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
OUTPut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
:TTLTrg
:TTLTrg
READ? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
SAMPle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
:COUNt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
:COUNt? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
:SOURce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
:SOURce? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
:TIMer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
:TIMer? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
[SENSe:] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
FUNCtion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
FUNCtion? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
RESistance:APERture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
RESistance:APERture? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
RESistance:NPLC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
RESistance:NPLC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
RESistance:OCOMpensated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
RESistance: OCOMpen sated? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
RESistance:RANGe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
RESistance:RANGe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
RESistance:RANGe :AUTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
RESistance:RANGe:AUTO? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
RESistance:RESolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
RESistance:RESolution? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
VOLTage:AC:RANGe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
VOLTage:AC: RANGe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
VOLTage:APERture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
VOLTage:APERture? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
VOLTage[:DC]:RANGe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
VOLTage[:DC]:RANGe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
VOLTage:NPLC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
VOLTage:NPLC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
VOLTage:RANGe:AUTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
VOLTage:RANGe:AUTO? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
VOLTage:R ESolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
VOLTage:R ESolution? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
SYSTem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
:CDEScription? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
:CTYPe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
:ERRor? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
TRIGger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
:COUNt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
n[:STATe] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
n[:STATe]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
4 Contents HP E1326B/E1411B 5 1/2 Digit Multimeter User’s Manual
:COUNt? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
:DELay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
:DELay? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
:DELay:AUTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
:DELay:AUTO? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
[:IMMediate] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
:SOURce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
:SOURce? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
IEEE 488.2 Common Command Reference . . . . . . . . . . . . . . . . . . . . . . . 186
Command Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Appendix A. HP E1326B/E1411B Multimeter Specifications . . . . . . . . . . . . . . . . 189
General Specification s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Appendix B. HP E1326B/E1411B Multimeter Error Messages . . . . . . . . . . . . . . . 197
Appendix C. HP E1326B/E1411B Multimeter Register-Based Programming . . . . . . . 199
About This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Register Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
The Base Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Register Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Accessing the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
The WRITE Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
The Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
The Command and Param ete r Registers . . . . . . . . . . . . . . . . . . . . . . . 204
The READ Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
The ID Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
The Device Ty pe Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
The Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
The Query Response Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
The Data Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Program Timing and Execution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Resetting the Multimeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Configuring the Multimeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Retrieving Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Checking for Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Querying Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Using a Multiplexer with the Multimeter . . . . . . . . . . . . . . . . . . . . . . . 216
Register Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
The Trigger System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Multimeter Triggering Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Control Register Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Programming Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Resetting the Multimeter
Reading the ID Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
HP E1326B/E1411B 5 1/2 Digit Multimeter User’s Manual Contents 5
Reading the Device Type Register . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Reading the Query Respons e Register . . . . . . . . . . . . . . . . . . . . . . . . 22 6
Reading an Error Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Stand-Alone Multimeter Measurements . . . . . . . . . . . . . . . . . . . . . . . 234
Scanning Multimeter Measurements . . . . . . . . . . . . . . . . . . . . . . . . . 246
Useful Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Command and Parameter Opcodes . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Register-Based Programmi ng Error Codes . . . . . . . . . . . . . . . . . . . . . . 264
Multimeter Power-On Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Function and Aperture Change Times . . . . . . . . . . . . . . . . . . . . . . . . 266
VME Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Appendix D. Measurement Speed and Accuracy Tradeoffs . . . . . . . . . . . . . . . . . 269
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
6 Contents HP E1326B/E1411B 5 1/2 Digit Multimeter User’s Manual
Certification
Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. HewlettPackard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technol-
ogy (formerly National Bureau of Standards), to the extent allowed by that organization’s calibration facility, and to the calibration
facilities of other International Standards Organization members.
Warranty
This Hewlett-Packard product is warranted against defects in materials and workmanship for a period of three years from date of shipment. Duration and conditions of warranty for this produc t may be superseded when the product is integr ated into (becomes a part of)
other HP products. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which
prove to be defective.
For warranty service or repair, this product must be returned to a service facility designated by Hewlett-Packard (HP). Buyer shal l prepay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping
charges, duties, and taxes for products returned to HP from another country.
HP warrants that its software and firmware designated by HP for use with a product will execute its programming instructions when
properly installed on that produ c t. HP do e s not warrant that th e oper a t io n of th e product, or softwa re , or fir m w ar e w il l be un in terru pt ed
or error free.
Limitation Of Warranty
The foregoing wa rr a nt y s ha l l not apply to defects resulting from im p roper or inadequate m a in te n a nc e by Buye r , Bu ye r- supplied products or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper site preparation or maintenance.
The design and implementation of any circuit on this product is the sole responsibility of the Buyer. HP does not warrant the Buyer’s
circuitry or m a lfu nc tions of HP products th a t r e sult from the Buyer’s c irc u i t r y. In add i t ion, HP does not warr ant any damage that occurs as a result of the Buyer’s circuit or any defects that result from Buyer-supplied products.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedies
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE
FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
Notice
The information contained in this document is subject to change without notice. HEWLETT-PACKARD (HP) MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. HP shall not be liable for errors contained
herein or for incidental or consequential damages in connection with the furnishing , performance or use of this material. This document contains proprietary information which is protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language witho ut the prior written consent of Hewlett-Packard Company. HP assumes no
responsibility for the use or reliability of its software on equipme nt that is not furnished by HP.
U.S. Government Restricted Rights
The Software and Documentation have been developed entirely at private expense. They are delivered and licensed as "commercial
computer software" as defined in DFARS 252.227-7013 (October 1988), DFARS 252.211.7015 (May 1991) or DFARS 252.227-7014
(June 1995), as a "commercial item" as defined in FAR 2.101(a), or as "Restricted comp uter software" as defined in FAR 52.227-19
(June 1987) (or any equivalent agency regulation or contract clause), whichever is applicable. You have only those rights provided for
such Software and Documentation by the applicable FAR or DFARS clause or the HP standa rd software agreem ent for the product involved.
E1326B/E1411B 5 1/2-Digit Multimeter User’s Manual
Copyright © 2004 Agilent Technologies, All Rights Reserved.
E1326-90009
HP E1326B/E1411B 5 1/2-Digit Multimeter User’s Manual 7
Documentation History
All Editions and Updates of this manual and their creation date are listed below. The first Edition of the manual is Edition 1. The Edition number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages
to correct or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of
the Update information for the previous Edition. Each new Edition or Update also includes a revised copy of this documen tatio n history page.
Edition 1, August 2004;
Safety Symbols
Instructio n m a nu a l s ym b ol affixed to pro duct. Indicates that the user must refer to the
manual for specific WARNING or CAUTION information to avoid personal injury
or damage to th e product.
Indicates the field wiring terminal that must
be connected to earth ground before operating the equipment—protects against electrical shock in case of fault.
or
Frame or chassis ground terminal—typically connects to the equipment’s metal
frame.
WARNING
CAUTION
Alternating current (AC).
Direct current (DC).
Indicates hazardous voltages.
Calls attention to a procedure, practice, or
condition that c ould cau se bodi l y in ju ry or
death.
Calls attention to a procedure, practice, or condition that could possibly cause damage to
equipment or pe r m a n e nt loss of data.
WARNINGS
The following general safety precautions must be observed during all phases of operation, service, and repair of this product.
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the product. Hewlett-Packard Company assumes no liabil ity for the customer’s failure to
comply with these requirements.
Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earth
ground must be provid e d from th e mai ns po we r sourc e to the pro du c t in pu t w iring terminals or s upplied power cable.
DO NOT operate the product in an explosive atmosphere or in the presence of flammable gases or fumes.
For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type.
DO NOT use repaired fuses or short-circuited fuse holders.
Keep away from live circuits: Operating personnel must not remove equipment covers or shields. Procedures involving the removal
of covers or shields are for use by service-trained personnel only. Under certain conditions, dangerous voltages may exist even with the
equipment switched off. To avoid dangerous electrical shock, DO NOT perform procedures involving cover or shield removal unless
you are qualified to do so.
DO NOT operate damaged equipment: Whenever it is possible that the safety protection features built into this product have been impaired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product until
safe operation can be verified by service-trained personnel. If necessary, return the product to a Hewlett-Packard Sales and Service Office for service and repair to ensure that safety features are maintained.
DO NOT service or adjust alone: Do not attempt internal service or adjustment unless another person, capable of rendering first aid
and resuscitation, is present.
DO NOT substitute parts or modify equipment: Because of the danger of introducing additional hazards, do not install substitute
parts or perform any unauthorized modification to the product. Return the product to a Hewlett-Packard Sales and Service Office for
service and repair to ensure that safety features are maintained.
8 HP E1326B/E1411B 5 1/2-Digit Multimeter User’s Manual
DECLARATION OF CONFORMITY
SA
Manufacturer’s Name: Agilent Technologies, Incorporated
Manufacturer’s Address: Measurement Product Generation Unit
Declares, that the product
Product Name: B-Size VXI 5 ½ Digital Multimeter
Model Number: E1326B
Conforms with the following European Directives:
The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC
and carries the CE Marking accordingly
Conforms with the following product standards:
EMC Standard
Safety
Supplemental Information:
[1]
September 5, 2000
Date
Authorized EU-representative: Agilent Technologies Deutschland GmbH, Herrenberger Stra βe 130, D 71034 Böblingen, Germany
Product Options: This declaration covers all options of the above product(s).
IEC 61326-1:1997+A1:1998 / EN 61326-1:1997+A1:1998
CISPR 11:1997 +A1:1997 / EN 55011:1998
IEC 61000-4 -2:1995+A1:1998 / EN 61000-4-2:1995
IEC 61000-4 -3:1995 / EN 61000-4-3:1995
IEC 61000-4 -4:1995 / EN 61000-4-4:1995
IEC 61000-4 -5:1995 / EN 61000-4-5:1995
IEC 61000-4 -6:1996 / EN 61000-4-6:1996
IEC 61000-4 -11:1994 / EN 61000-4-11:1994
Canada: ICES-001:1998
Australia/New Zealand: AS/NZS 2064.1
IEC 61010-1:1990+A1:1992+A2:1995 / EN 61010-1:1993+A2:1995
Canada: CSA C22.2 No. 1010.1:1992
UL 3111-1:1994
The product was tested in a typical configuration with Agilent Technologies test systems.
For further information, please contact your local Agilent Technologies sales office, agent or distributor.
According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014
815 14th ST. S.W.
Loveland, CO 80537 USA
Limit
Group 1 Class A
4kV CD, 8kV AD
3 V/m, 80-1000 MHz
0.5kV signal lines, 1kV power lines
0.5 kV line-line, 1 kV line -ground
3V, 0.15-80 MHz
I cycle, 100%
Name
Quality Manager
Title
[1]
Revision: A.03 Issue Date: 09/05/00
DECLARATION OF CONFORMITY
SA
Manufacturer’s Name: Agilent Technologies, Incorporated
Manufacturer’s Address: Measurement Product Generation Unit
Declares, that the product
Product Name: 5 ½ Digit Multimeter
Model Number: E1411B
Conforms with the following European Directives:
The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC
and carries the CE Marking accordingly
Conforms with the following product standards:
EMC Standard
Safety
Supplemental Information:
[1]
September 5, 2000
Date
Authorized EU-representative: Agilent Technologies Deutschland GmbH, Herrenberger Stra βe 130, D 71034 Böblingen, Germany
Product Options: This declaration covers all options of the above product(s).
IEC 61326-1:1997+A1:1998 / EN 61326-1:1997+A1:1998
CISPR 11:1997 +A1:1997 / EN 55011:1998
IEC 61000-4 -2:1995+A1:1998 / EN 61000-4-2:1995
IEC 61000-4 -3:1995 / EN 61000-4-3:1995
IEC 61000-4 -4:1995 / EN 61000-4-4:1995
IEC 61000-4 -5:1995 / EN 61000-4-5:1995
IEC 61000-4 -6:1996 / EN 61000-4-6:1996
IEC 61000-4 -11:1994 / EN 61000-4-11:1994
Canada: ICES-001:1998
Australia/New Zealand: AS/NZS 2064.1
IEC 61010-1:1990+A1:1992+A2:1995 / EN 61010-1:1993+A2:1995
Canada: CSA C22.2 No. 1010.1:1992
UL 3111-1:1994
The product was tested in a typical configuration with Agilent Technologies test systems.
For further information, please contact your local Agilent Technologies sales office, agent or distributor.
According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014
815 14th ST. S.W.
Loveland, CO 80537 USA
Limit
Group 1 Class A
4kV CD, 8kV AD
3 V/m, 80-1000 MHz
0.5kV signal lines, 1kV power lines
0.5 kV line-line, 1 kV line -ground
3V, 0.15-80 MHz
I cycle, 100%
Name
Quality Manager
Title
[1]
Revision: A.03 Issue Date: 09/05/00
Chapter 1
Getting Started with the HP E1326B/E1411B
Multimeter
About This Chapter
This chapter introduces you the B-size HP E1326B and C-size HP E1411B
1
5
⁄2 - Digit Multimeters. The main se ct io ns of the chapter are:
• Multimeter Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13
• Introduction to Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16
Note This manual is to be used with the HP E1326B or HP E1411B installed in
the HP 75000 Series B or Series C mainframe, and when the multimeter is
programmed using Standard Commands for Programmable Instruments
(SCPI) language or when it is programmed at the register level.
Multimeter Overview
The HP E1326B/E1411B multimeter is a register-based VXI instrument.
There are two different methods of programming the multimeter based on
the system configuration that it is used in.
If the HP E1326B is used in an HP E1300/E1301/E1302 B-size VXI
mainframe, or if the HP E1326B/E1411B is used in a C-size VXI
mainframe with an HP E1405/E1406 Command Module or with a computer
which has HP Compiled SCPI software, then it may be programmed using
SCPI language. This is the method described in Chapters 1 through 5.
If the HP E1326B is in a VME mainframe or the E1326B/E1411B is in a
C-size VXI mainframe and no HP Command Mo du le or co mpu te r with
Compiled SCPI is present, then the multimeter must be programmed at the
register level. Appendix C covers register level programming.
The HP SCPI driver provides an error queue, input and output buffers,
status registers, and is allocated a portion of mainframe memory for reading
storage. This "instrument" may consist of the multimeter, or it can also
include multiplexers such as the HP E1345A/46A/47A/51A/53A and the
HP E1460A/76A. The instrument is operated from the mainframe front
panel or from a computer using the SCPI language.
Instruments are bas ed on th e logical addresse s of the plu g- in mo du le s. The
HP VXIbus Systems Installation and Getting Started Guide explains how to
Chapter 1 Getting Started with the HP E1326B/E1411B Multimeter 13
set the addresses in order to create an instrument. The guide should be your
starting point toward using the multimeter. The functions and features of
the multimeter are presented in the following functional, electrical, and
physical descriptions.
Functional
Description
Measurement
Functions
Configuring the
Multimeter
The 51⁄2 - digit multimeter ca n be use d stand-alone, or com bi ne d w it h
multiplexers (for example, HP E1345A/46A/47A/51A/52A/55A/56A/
57A/58A or HP E1460A/76A) to form a scanning multimeter.
In stand-alone operation, input signals are connected to the multimeter’s
external (faceplate) terminals. In scanning operation, input signals are
connected to the multiplexer channels. The multimeter is linked to relay
multiplexer(s) via an analog bus cable. The multimeter is linked to FET
multiplexers via an analog cable and a digital bus cable.
The multimeter’s measurement functions are shown below. These functions
are typical of those required for many data acquisition and computer aided
test applications.
– DC Voltage
– RMS AC voltage
– 2-Wire Resistance (scanning multimeter only)
– 4-Wire Resistance
– Temperature (thermistors, RTDs, thermocouples)
With MEASure or CONFigure, the multimeter is configured for
measurements using a single command. When necessary, low-level
commands are available to set configurations for unique applications. Such
commands, for example, allow you to enable autozero or offset
compensation, or change various analog-to-digital (A/D) converter
parameters.
Triggering the
Multimeter
The multimeter’s trigger system allows it to be internally or externally
triggered. The system enables you to scan a multiplexer channel list
multiple times, or in the stand-alone configuration, take multiple readings
per trigger. An on-board timer allows you to pace measurements.
Reading Storage Readings are returned directly to the multimeter’s output buffer or are
stored in mainframe memory. The total number of readings which can be
stored (all multimeters combined) depends on the amount of memory
available. Each reading stored will consume four bytes of m emory.
Saving Configurations To minimize repeated programming, up to 10 stand-alone multimeter
configurations can be saved and recalled. The configurations remain in
memory until a new configuration is saved or until power is cycled.
Electrical
Description
The electrical performance of the multimeter is summarized in Table 1-1.
Refer to Appendix A for a complete table of specifications.
14 Getting Started with the H P E1 326B/E1411B Mul t i m et er Chapter 1
Table 1-1. HP E1326B/E1411B Operating Characteristics
DC Voltage
Ranges
Resolution
Accuracy (90 days)
Max Rdgs/se c
AC RMS Voltage
Ranges
Resolution
Accuracy (90 days)
Frequency Range
2-Wire and 4-Wire Resistance
Ranges
Resolution
Accuracy (90 days)
Physical
Description
0.125V, 1.0V, 8.0V, 64. 0V, 300V full scale.
120nV on 0.125V range with 20/16.7 msec aperture time.
0.01%
13,150
0.0875V, 0.7V, 5.6 V, 44 .8 V, 30 0V fu ll scale.
29.8nV on 0.0875V range with 320/267 msec aperture time.
0.625%
20 Hz to 10 kHz
256Ω, 2048Ω, 16384Ω, 131072Ω, 1048576Ω full scale.
250mΩ on 256Ω range with 20/16.7 msec aperture time.
0.025%
The 51⁄2 - digit multimeter occupies one B-Size or one C-Size mainframe
slot. However, the faceplate of the B-size multimeter covers up an
additional slot in the B-Size mainframe. This prevents another B-size card
from being installed in the slot directly above the multimeter. An internal
installation kit, discussed in Chapter 2, enables you to install the multimeter
internal to the H P 75 0 00 Seri es B mai nf ra me. This saves two exter na lly
accessed slots.
Input Terminals There are four input terminals on the faceplate of the multimeter
(see Figure 2-7 on page 29). The terminals, which are isolated from chassis
ground, are used to connect input signals when the multimeter is used
stand-alone.
A high-to-low TTL pulse applied to the External Trigger port externally
triggers the multimeter. The Analog Bus and Digital Bus ports allow relay
and FET multiplexers to be connected to the multimeter.
Chapter 1 Getting Started with the HP E1326B/E1411B Multimeter 15
Introduction to Operation
This section contai ns inf or mat io n on che ck in g co m mun ic at ion be twe en the
multimeter, mainframe, and computer. It includes information on returning
the multimeter to a known operating state should programming errors occur
or if you simply want to start over. It also shows how to send a command to
configure the multimeter and make a measurement.
Note The HP E1411B has a "Failed" annunciator and an "Access" annunciator on
the faceplate. The "Failed" annunciator turns on if the multimeter does not
properly respond during the mainframe’s power-on sequence. If this
occurs, return the multimeter to Hewlett-Packard for service. The "Access"
annunciator turns on each time the multimeter receives a command.
Multimeter Self-Test Once the mainframe completes its power-on sequence, the multimeter is
ready for use. Sending the self-test command is an easy way to verify that
you are properly add re ss in g th e m ul ti met er . Also, the self-test is use fu l in
locating intermittent problems that might occur during operation. The
command us ed to ex ec ut e th e self-test is:
*TST?
You can also run the self-test by selecting “TEST” from the multimeter’s
front panel menu on the HP E1301A mainframe. Upon execution, the
self-test resets the multimeter, performs the test, and returns one of the
codes listed in Tab le 1-2 .
The following program executes the self-test. The program assumes the
mainframe (command module for C-size systems) is at primary HP-IB
address of 09 and the multimeter is at secondary address 03. The program
also assumes an HP 9000 Series 200/300 computer is used.
10 !Send the self-test command to the multimeter.
20 OUTPUT 70903;"*TST?"
30 !
40 ENTER 70903;A
50 PRINT A
60 !
70 OUTPUT 70903;"*RST"
80 END
Enter and display the self-test code.
Reset the multimeter.
After the test passes, always reset the multimeter to return it to a known state.
16 Getting Started with the H P E1 326B/E1411B Mul t i m et er Chapter 1
Table 1-2. HP E1326/E1411 Self-Test Codes
Self-Test
Code Description
0 Test passed.
1 Multimeter does not resp ond to the self-test.
2 Invalid communication between the multimeter’s two on-board processors.
3 Data line test between the multimeter and the mainframe command module failed.
4 Invalid communication between the multimeter and mainframe command module.
If self-test code 1, 2, 3, or 4 occurs, return the multimeter to Hewlett-Packard for repair.
Note If the multimeter did not respond to the self-test, the address you specified
may be incorrect. Refer to Chapter 2 in this manual and the HP VXIbus
Systems Installation and Getting Started Guide.
Resetting the
Multimeter
During operation, programming errors and other conditions may occur
making it necessary to reset the multimeter. This section shows you how to
reset and clear th e m ul tim et er, an d re ad its err or que u e .
The multimeter is reset with the command:
*RST
which can be sent from an HP 9000 Series 200/300 computer as:
OUTPUT 70903;"*RST"
The multimeter ca n al so be re se t by pre ss in g th e gr ee n “ Re se t Ins tr ” ke y on
the HP E1301A mainframe front panel. Note that the multimeter must first
be selected from the mainframe menu.
When resetting the multimeter:
• A front panel reset (“Reset Instr” key on the HP E1301A mainframe)
returns the multimeter to the idle state from the busy state and sets the
multimeter’s power-on configuration (Table 1-3). A front panel reset is
equivalent to clearing the multimeter followed by a reset.
• A reset from the com p u te r (*RST) returns the multimeter to the idle
state from the busy state if the multimet er is bu sy due to a co m m an d
entered from the front panel. If the multimeter is busy due to a
command sent from the computer, you must clear the multimeter
before sending the reset. The reset sets the multimeter’s power-on
configuration.
Chapter 1 Getting Started with the HP E1326B/E1411B Multimeter 17
Table 1-3. HP E1326/E1411 Power-on Settings
Parameter Setting
FUNCtion VOLT:DC
VOLTage:RANGe 8V
RESistance:RANGe
16384Ω
VOLTage:RANGe:AUTO ON
RESistance:RANGe:AUTO ON
VOLTage:RESolution 7.629
RESistance:RESolution
µ
15.6 mΩ
V
VOLTage:APERture 16.7 ms or 20 ms (based on line frequency )
RESistance:APERture 16.7 ms or 20 ms (based on line frequency )
CALibratio n:LFRequency Unchan ged (factory set ting = 60 Hz)
VOLTage:NPLC 1
RESistance:NPLC 1
RESistance:OCOMpensated OFF
CALibration:ZERO:AUTO ON
TRIGger:COUNt 1
TRIGger:DELay:AUTO ON
TRIGger:SOURce IMM
SAMPle:COUNt 1
SAMPle:SOURce IMM
18 Getting Started with the H P E1 326B/E1411B Mul t i m et er Chapter 1
Clearing the Multimeter When the multimeter is selected from the HP E1301A mainframe menu, the
multimeter is cleared by pressing the “Clear Instr” key on the front panel.
The multimeter is also cleared by sending the following command from an
HP 9000 Series 200 or Series 300 controller:
CLEAR 70903
Clearing the multimeter:
– allows you to regain control without cycling power and without
setting the pow er -o n co nf ig ur at io n.
– with the HP E1301A “Clear Instr” key terminates any
command entered from the front panel. A command sent from
the computer w ill st ill co nt in ue to ex ec ut e.
– from the computer (CLEAR 70903) terminates any command
sent from the computer. A command entered from the
HP E1301A front panel will still continue to execute.
– erases any pending commands. For example, if commands are
sent from the computer to the multimeter while the multimeter is
waiting for an external trigger, the commands are buffered until
they can execute after the trigger is received. Clearing the
multimeter (from the computer) erases those commands.
Similarly, clearing the multimeter from the HP E1301A front
panel erases any pending front panel commands.
– if cleared from the HP E1301A front panel, the display buffer is
cleared. If cleared o ve r HP-IB, the data in the outp ut buf fe r is
erased.
The Error Queue When an error occurs during operation, an error code and corresponding
message are stored in the multimeter’s error queue. If the Series B
mainframe has a display (HP E1301A) and the multimeter is being
monitored, the "err" annunciator will turn on.
Since many mainframes may not have a front panel display, the other way
to determine if an er ro r ha s oc cu rr ed is to rea d th e er ro r qu eu e. This is done
with the command:
SYSTem:ERR?
The following program shows how the command is used to read and clear
the error queu e.
10 !Declare a string variable in the computer to store the error message.
20 DIM Message$[256]
30 !
40 !Print the error codes and messages.
50 REPEAT
60 OUTPUT 70903;"SYST:ERR?"
70 ENTER 70903;Code,Message$
80 PRINT Code,Message$
90 UNTIL Code=0
100 END
Read the error queue until no errors remain.
Chapter 1 Getting Started with the HP E1326B/E1411B Multimeter 19
The error queue can store up to 30 error messages which are retrieved in a
first in, first ou t (FI F O) m anner. When th er e ar e no err or me ss ag es in th e
queue, a code of 0 and the message "No Error" are returned. Errors
generated during front panel operation are displayed but are not stored in
the error queu e.
Note Appendix B contains a list of error messages associated with the multimeter
and their causes.
Making a
Measurement
Example: Making a
Measurement
(Stand-Alone
Multimeter)
Example: Making a
Measurement
(Scanning Multimeter)
The HP E1326B/E1411B multimeter can be configured and make
measurements using the
show how it is used with the stand-alone and scanning multimeters.
This example uses the MEASure command to make a DC voltage
measurement on the terminals connected to the multimeter’s faceplate.
The reading is then entered into the computer and displayed.
10 OUTPUT 70903;"MEAS:VOLT:DC?"
20 ENTER 70903;Rdg
30 PRINT Rdg
40 END
This example uses the MEASure command to scan a list of multiplexer
channels and make a DC voltage measurement on each channel. The
readings are then entered into the computer and displayed.
10 DIM Rdgs(1:5)
20 OUTPUT 70903;"MEAS:VOLT:DC? (@100:104)"
30 ENTER 70903;Rdgs(*)
40 PRINT Rdgs(*)
50 END
MEASure command. The following examples
20 Getting Started with the H P E1 326B/E1411B Mul t i m et er Chapter 1
Configuring the HP E1326B/E1411B
About This Chapter
This chapter contains information on connecting input signals to the
multimeter using multiplexers and using the terminals on the multimeter’s
faceplate. The main sections of the chapter are:
WARNING SHOCK HAZARD. Only service-trained personnel who are
aware of the hazards involved should install or configure the
multimeter. Remove all sources of power to the multimeter and
mainframe before removing the multimeter.
Chapter 2
Multimeter
• Installation Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21
• Input Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 28
• Connecting Input Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 32
• Carrier Cable Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 37
• Additional Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 39
The maximum allowable input on the multimeter terminals is
300 V dc (450 V ac peak). Since the terminals are isolated from
the multimeter chassis, the potential between the terminals and
the chassis is equal to the value of the input signal.
Installation Overview
As mentioned in the HP VXIbus Systems Installation and Getting Started
Guide, each plug-in module has a row of switches which set the module’s
logical addres s. Based on this add re ss , th e sy st em in st ru m en t w it hi n th e
HP 75000 Series B mainframe and HP E1406A command module combines
the modules into virtual instruments. The instruments are programmed by a
computer using SCPI language or from a computer by writing commands
directly to the multimeter registers (see Appendix C).
This section shows the location of the multimeter’s logical address switch
and shows how it is set. It also mentions considerations when installing the
multimeter in the mainframe.
Chapter 2 Configuring the H P E1 32 6B/E1411B Multim eter 21
Setting the Logical
Address Switch
Figure 2-1 shows the location and settings of the multimeter’s logical
address switch.
The switch has a factory setting of 24 which is equivalent to a secondary
HP-IB address of 03. If you have more than one multimeter, you must change
the logical address to some other multiple of 8 (for example, 32, 40, 48...), as
there can only be one instrument per secondary address.
Figure 2-1. HP E1326/1411 Logical Address Switch Settings
22 Configuring the HP E1326B/E1411B Multimeter Chapter 2
Forming a Scanning
Multimeter
If multiplexers are used to form a scanning multimeter, they must be
assigned successive logical addresses beginning with the address
immediately following that of the multimeter. An example is shown in
Figure 2-2.
The scanning multimeter can consist of relay multiplexers, FET
multiplexers, or a combination of both. See “Connecting Multiplexers” on
page 30 for information on physically connecting the multiplexers to the
multimeter.
Figure 2-2. Setting Successive Logical Addresses to Form
an Instrument
Chapter 2 Configuring the H P E1 32 6B/E1411B Multim eter 23
VXIbus Interrupt
Lines
Note IRQ OFF is set when the multimeter is installed in systems without a Series B
The multimeter sends interrupts to, and receives acknowledgements from
the slot 0 module via the VXIbus backplane interrupt lines. Since the
multimeter is a nonprogrammable interrupter, the interrupt line is selected
with the multimeter’s IRQ jumper.
There are seven backplane interrupt lines. At the factory, the IRQ jumper is
set to line 1. The system instrument in the Series B mainframe is assigned
to each line, and the system instrument in the HP E1406A command module
is assigned to line 1 by default. Therefore, in Series B systems it is not
necessary to change the IRQ jumper setting. If the command module in
Series C systems is assigned another line and the multimeter is to use that
line, the IRQ jumper must be set accordingly. Figure 2-3 shows the location
of the jumpers used to select an interrupt line. For most applications where
the multimeter is installed in an HP 75000 Series B or Series C mainframe,
the jumpers do not have to be moved.
mainframe or HP E1406A command module.
Interrupt Priority In the HP 75000 Series B and Series C mainframes, the VXIbus interrupt
lines have the same priority; therefore, interrupt priority is established by
installing modules in slots numerically closest to the slot 0 module. Thus,
slot 1 (internal on the Series B mainframe) has a higher priority than slot 2
(also internal), slot 2 has a higher priority than slot 3, and so on.
HP E1411BHP E1326B
Interrupt
Jumper
Location
Interrupt
Jumper
Location
Figure 2-3. Interrupt Jumper Locations
24 Configuring the HP E1326B/E1411B Multimeter Chapter 2
HP E1326B Internal
Installation
When the HP E1326B is installed in an HP E1300A/E1301A/E1302A
mainframe, it occupies one slot. However, the faceplate to which the input
terminals are connected covers up an additional slot. This prevents another
module from being installed in the slot directly above the multimeter.
To make the two slots available to other modules, the HP E1326B can be
installed internal to the mainframe (in slot 2) using an internal installation
kit (HP P/N E1326-80004).
Multimeter installation into the external slots is covered in the Installation
and Getting Started Guide. Instructions for installing the multimeter
internally are included in the installation kit.
Connecting the
HP E1326B Adapter
If the HP E1326B multimeter is installed internal to the HP E1300A/E1301A
mainfra me, the HP E1326-80005 adapter can be used to provide HI, LO,
COM, and HI banana plug terminals for the multimeter. When the adapter
is connected as shown in Figure 2-4, the terminals, rather than the
multiplexer, are the input to the multimeter.
Figure 2-4. Connecting the HP E1326B Adapter
Chapter 2 Configuring the H P E1 32 6B/E1411B Multim eter 25
Installing the
HP E1411B in a
Mainframe
Set the extraction levers out.
The HP E1411B multimeter can be installed in any slot (except slot 0) in a
C-size VXIbus mainframe. Refer to Figure 2-5 to install the E1411B in a
mainframe.
Slide the multimeter into any slot
(except slot 0) until the backplane
connectors touch.
Tighten the top and bottom screws
to secure the multimeter to the
mainframe.
Seat the multimeter into
the mainframe by pushing
in the extraction levers.
To remove the multimeter from the mainframe,
reverse the procedure.
Figure 2-5. Installing the HP E1411B Multimeter in a VXIbus Mainframe
26 Configuring the HP E1326B/E1411B Multimeter Chapter 2
The Reference
Frequency
In many data acquisition applications, DC voltage and resistance
measurements are often made in the presence of normal mode noise. This
type of noise emanates from the surrounding environment, primarily from
50 Hz and 60 Hz power lines. The HP E1326B/E1411B multimeter is able
to reject normal mode noise by using an integrating analog-to-digital (A/D)
converter. The integration process averages out the power line related noise
over an integer number of power line cycles (PLCs) during the A/D
conversion. The multimeter’s ability to reject noise at the power line
frequency is expressed in terms of normal mode rejection (NMR).
Setting the Reference
Frequency
Querying the
Reference Frequency
In certain applications, the multimeter’s power line frequency may be
different from the line frequency of the device being measured. Assume,
for example, the multimeter has a power line frequency of 60 Hz and the
device being measured has a line frequency of 400 Hz. Normal mode
rejection can be achieved by setting the reference frequency to 50 Hz.
This is done with the command:
CALibration:LFRequency frequency | MIN | MAX
frequency is power line frequency. Settings are 50 or 60.
MIN sets the minimum power line frequency (50 Hz).
MAX sets the maximum power line frequency (60 Hz).
The reference frequency is set to 60 Hz at the factory. The setting is stored
in non-volatile memory and is changed only when
is executed.
The reference frequency is queried with the following commands.
See Chapter 5 for additional information about these commands.
CALibration:LFRequency?
CALibration:LFrequency? MIN | MAX
CALibration:LFRequency
Chapter 2 Configuring the H P E1 32 6B/E1411B Multim eter 27
Input Characteristics
The multimeter is a floating, balanced differential multimeter. Floating means
the multimeter’s input terminals are isolated from its chassis. A balanced
differential multimeter is one where the input impedance between HI and COM
is the same as the impedance between LO and COM (see Figure 2-6). The
only difference between the HI and LO terminals is the polarity.
Figure 2-6. A Floating, Balanced Differential Multimeter
28 Configuring the HP E1326B/E1411B Multimeter Chapter 2
Input Terminals The multimeter input terminals are shown in Figure 2-7. The maximum
input on the HI and LO terminals is 300 V dc (450 V ac peak). The
maximum amount of common mode voltage developed between LO and
COM and HI (current) and COM cannot exceed 15 V peak.
CAUTION A maximum voltage of 300 V dc (450 V ac peak) is allowed on
the multimeter’s rear terminals. Multiplexers connected to the
multimeter reduce the voltage that can be applied between the
multiplexer’s High (H), Low (L), and Guard terminals, to the
level specified for the multiplexer. For example,
HP E1343A/44A 250 V dc or 354 V ac peak
HP E1345A/47A 120 V dc or 170 V ac peak
HP E1351A 14 V dc or ac peak
Mixing of multiplexer types reduces all voltage ratings to that of
the lowest rated multiplexer. For example, if an HP E1343A and
E1351A are connected to the same multimeter, then the system
rating is that of the E1351A, which is 14 V.
Figure 2-7. HP E1326B/E1411B Input Terminals
Chapter 2 Configuring the H P E1 32 6B/E1411B Multim eter 29
Connecting
Multiplexers
In a scanning multimeter configuration, the multimeter is connected to the
multiplexers with an analog bus cable, or with the analog bus cable and a
digital bus cable. The cable(s) used is determined as follows:
1. If the scanning multimeter uses relay multiplexer s onl y, the analog
bus cable is used.
2. If the scanning multimeter uses FET multiplexers only, the analog
bus cable and the digital bus cable are used.
3. If the scanning multimeter uses a combination of relay and FET
multiplexers, only the analog bus cable is used.
Figure 2-8 shows how the analog and digital bus cables are connected.
Figure 2-8. Connecting the Analog and Digital Bus Cables
30 Configuring the HP E1326B/E1411B Multimeter Chapter 2
Analog Bus
Connections at the
Multimeter
The analog bus coming from the multiplexer consists of six lines. On the
multiplexer terminal block these lines are labeled:
H L G I+ I- IG
Where the ribbon cable connects the multiplexer to the multimeter the lines
are labeled:
H L G H L G
The lines are then connected to the multimeter’s HI LO COM HI lines as
shown in Figure 2-9.
Figure 2-9. Analog Bus Connections
Digital Bus Over view The digital bus cable coordinates the operation (handshaking) between the
multimeter and FET multiplexers without involvement from the system
instrument. This enables the multimeter to scan the FET channels at a rate
of approximately 13,150 channels/sec.
The digital bus consists of a Voltmeter Complete line, an (external) Trigger
line, and ground. The handshake sequence is described in the following
steps and in Figure 2-10.
1. When a FET channel is closed, a "channel closed " signa l is sent over
the Trigger line. This triggers the multimeter which, in turn, makes a
measurement.
2. When the measurement is finished, a "voltmeter complete" signal is
sent from the multimeter to the multiplexer on the Voltmeter
Complete line. This signal advances the scan to the next channel in
the list. When the channel is closed, the channel closed signal
triggers the multimeter and the process repeats.
Figure 2-10. Digital Bus Overview
Chapter 2 Configuring the H P E1 32 6B/E1411B Multim eter 31
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