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Multimeter Command Reference 67Chapter 3
Chapter 3
Multimeter Command Reference
Using This Chapter
This chapter describes the Standard Commands for Programmable Instruments
(SCPI) and IEEE 488.2 Common (*) Commands applicable to the HP E1312A and
HP E1412A 6½-Digit Multimeters.
Command Types
Commands are separated into two types: IEEE 488.2 Common Commands and SCPI
Commands.
Common
Command
Format
The IEEE 488.2 standard defines the Common commands that perform functions like
reset, self-test, status byte query, etc. Common commands are four or five characters
in length, always begin with the asterisk character (*), and may include one or more
parameters. The command keyword is separated from the first parameter by a space
character. Some examples of common commands are shown below:
*RST *ESR 32 *STB?
SCPI
Command
Format
The SCPI commands perform functions such as making measurements, querying
instrument states, or retrieving data. The SCPI commands are grouped into command
“subsystem structures”. A command subsystem structure is a hierarchical structure
that usually consists of a top level (or root) command, one or more low-level
commands, and their parameters. The following example shows the root command
CALibration
and its lower-level subsystem commands:
CALibration
:COUNt?
:LFRequency 50|60|MIN|MAX
:LFRequency? [MIN|MAX]
:SECure:CODE <
new code>
:SECure:STATe OFF|ON, <
code>
:SECure:STATe?
:STRing <
quoted string>
:STRing?
:VALue <
value>
:VALue?
:ZERO:AUTO ON|OFF
:ZERO:AUTO?
CALibration
is the root command, COUNt?, LFRequency, LFRequency?, SECure,
STRing, STRing?, VALue and VALue? are second level commands, and CODE,
STATe and STATe? are third level commands.
- Contents 1
- 2 Contents 2
- Contents 3 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- Contents 7 7
- 8 Contents 8
- Certification 9
- Safety Symbols 10
- WARNINGS 10
- Documentation History 10
- Trademarks 10
- BUSINESS REPLY MAIL 13
- Module Setup 15
- Interrupt Priority 17
- Initial Operation 22
- Information 25
- Loading Errors 26
- (dc volts) 26
- Leakage Current 26
- Common Mode 27
- Rejection (CMR) 27
- Rejecting Power 27
- Line Noise 27
- Voltages 27
- Noise Caused by 28
- Magnetic Loops 28
- Ground Loops 28
- Resistance Measurements 29
- Removing Field 30
- Wiring Resistance 30
- Measurements 30
- DC Current Measurement Errors 32
- True RMS AC Measurements 32
- Crest Factor Errors 33
- (non-sinusoidal 33
- errors 34
- Low-Level 35
- Measurement 35
- AC Current Measurement Errors 36
- Measurement Configuration 37
- Two Ways to Store the 42
- NULL Offset Value 42
- Storing the dB 43
- Reference Value 43
- Storing the dBm 43
- Reference Resistance 43
- Triggering the Multimeter 45
- Checking the 47
- Trigger Source 47
- Example: Setting the 49
- Trigger Count 49
- Example: Inserting a 49
- Trigger Delay 49
- CONF or MEAS command. The 50
- Sample Count 51
- HP VTL Software 52
- Making Multimeter 53
- MEASURE3 55
- Source Code File 55
- MEASURE4 56
- Synchronizing the 57
- Multimeter With a 57
- Switch Module 57
- HP E1412A SCAN 59
- Multimeter Status 60
- System Examples 60
- SYNCHOPC 61
- SYNCHMAV 62
- LIMITTST 63
- Programming 64
- Multimeter Command Reference 67
- SCPI Command Reference 71
- Subsystem Syntax ABORt 72
- CALCulate 73
- :AVERage:AVERage? 74
- :AVERage:COUNt? 74
- :AVERage:MAXimum? 74
- :AVERage:MINimum? 74
- :DB:REFerence 75
- :DB:REFerence? 75
- :DBM:REFerence 75
- :DBM:REFerence? 75
- Parameter 76
- :LIMit:LOWer 77
- :LIMit:LOWer? 77
- :LIMit:UPPer 77
- :LIMit:UPPer? 77
- :NULL:OFFSet? 78
- CALibration 79
- :LFRequency? 80
- :SECure:CODE 80
- :STRing? 82
- CALibration? 84
- CONFigure 85
- command for each function 86
- Default Settings for 86
- Command by Function 86
- :FREQuency 89
- [:VOLTage[:DC]]:RATio 95
- CONFigure? 96
- :POINts? 97
- Subsystem Syntax FETCh? 98
- INITiate 99
- :IMPedance:AUTO 100
- :IMPedance:AUTO? 100
- Subsystem Syntax MEASure 101
- Parameters 102
- :FREQuency? 104
- :PERiod? 106
- Subsystem Syntax OUTPut 111
- :TTLTrg[:STATe]? 112
- Subsystem Syntax READ? 113
- Subsystem Syntax SAMPle 114
- Example Set the Sample Count 114
- [SENSe:] 116
- FUNCtion 118
- FUNCtion? 118
- <time> 128
- Example Disable Autoranging 130
- FRESistance:RANGe:AUTO 134
- FRESistance:RANGe:AUTO? 134
- Example Query the Resolution 135
- Example Set the Aperture Time 136
- Example Change the Range 141
- Example Change the Resolution 143
- voltages present on the 152
- :QUEStionable:CONDition? 153
- :QUEStionable:ENABle 153
- :QUEStionable:ENABle? 154
- :QUEStionable[:EVENt]? 154
- Subsystem Syntax SYSTem 155
- Subsystem Syntax TRIGger 156
- Example Set the Trigger Count 156
- Example Set the Trigger Delay 157
- :DELay:AUTO? 159
- Example Set the Sample Source 160
- :SOURce? 161
- SCPI Command Quick Reference 167
- Command Description 168
- Appendix A 171
- DC Characteristics 171
- (continued) 172
- Measuring Characteristics 172
- Operating Characteristics [8] 173
- AC Characteristics 174
- Operating Characteristics 176
- General Specifications 179
- Total Measurement Error 181
- Error Example 181
- Sensitivity 182
- Resolution 182
- Accuracy 183
- Transfer Accuracy 183
- 24-Hour Accuracy 183
- 90-Day and 1-Year Accuracy 183
- Temperature Coefficients 183
- Error Messages 185
- INTERRUPTED 188
- UNTERMINATED 188
- DEADLOCKED 188
- CONFigure or MEASure 189
- of range 191
- Appendix C 193
- Commands (Non-SCPI ) 193
- Speed Advantage 194
- Using the Special 194
- Non-SCPI 194
- Commands 194
- (F1-F4 and R1-R7) 194
- Store the Readings in 198
- Multimeter RAM 198
- Instead of Sending 198
- Computer 198
- Numerics 199
- A (continued) 200
- C (continued) 201
- Index 203 203
- F (continued) 204
- Index 205 205
- Value, 78 206
- P (continued) 207
- R (continued) 208
- S (continued) 209
- T (continued) 211
- 212 Index 212
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