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6 – Language Dictionary
60
Measurement Commands
Measurement commands consist of fetch, measure, and sense commands.
Measure commands measure the output voltage or current. Measurements are performed by digitizing
the instantaneous output voltage or current for a specified number of samples, storing the results in a
buffer, and calculating the measured result. Two types of measurement commands are available:
MEASure and FETCh. MEASure commands trigger the acquisition of new data before returning the
reading. Measurement overflows return a reading of 9.91E+37. FETCh commands return a reading
computed from previously acquired data. If you take a voltage measurement, you can fetch only voltage
data. If you take a current measurement, you can fetch only current data.
♦ Use MEASure when the measurement does not need to be synchronized with any other event.
♦ Use FETCh when it is important that the measurement be synchronized with either a trigger or with a
particular part of the output waveform.
Sense commands control the current measurement range, the bandwidth detector of the dc source, and
the data acquisition sequence.
FETCh:ARRay:CURRent?
FETCh:ARRay:VOLTage?
These queries return an array containing either the digitized output current in amperes or output voltage
in volts. The data returned is the result of the last measurement command or acquisition trigger. The data
is valid until the next *RST, MEASure, or INITiate command occurs.
Query Syntax
FETCh:ARRay:CURRent[:DC]? (@<channel list>)
FETCh:ARRay:VOLTage[:DC]? (@<channel list>)
Parameters
None
Examples
FETC:ARR:CURR? (@1) FETC:ARR:VOLT? (@1)
Returned Parameters
<NR3> [,<NR3>]
Related Commands
SENS:SWE:TINT SENS:SWE:OFFS SENS:SWE:POIN
FETCh:CURRent?
FETCh:VOLTage?
These queries return either the dc output current in amperes or output voltage in volts. The data returned
is the result of the last measurement command or acquisition trigger. The data is valid until the next
*RST, MEASure, or INITiate command occurs.
Query Syntax
MEASure[:SCALar]:CURRent[:DC]? (@<channel list>)
FETCh[:SCALar]:CURRent[:DC]? (@<channel list>)
Parameters
None
Examples
MEAS:CURR? (@1) FETC:CURR:DC? (@1)
Returned Parameters
<NR3> [,<NR3>]
Related Commands
MEAS:VOLT? MEAS:CURR?
- USER’S GUIDE 1
- Warranty Information 2
- Safety Summary 3
- Declaration Page 5
- Acoustic Noise Information 6
- Printing History 6
- Table of Contents 7
- PROGRAMMING THE DC SOURCE 39 8
- LANGUAGE DICTIONARY 53 9
- SPECIFICATIONS 79 10
- ERROR MESSAGES 103 11
- LINE VOLTAGE SELECTION 107 11
- INDEX 111 11
- General Information 13
- Options and Accessories 14
- Description 14
- Output Characteristics 15
- Current Priority Operation 16
- Measurement Characteristics 17
- Start of a Measurement 18
- Installation 19
- Location 20
- Power Connections 21
- Outputs 1 - 4 22
- Current Ratings 23
- Coaxial Guard Connections 24
- External Trigger Connections 25
- Computer Connections 25
- 4 3 2 1 0 26
- Address = 5 26
- Turn-On Checkout 27
- Checkout Procedure 28
- In Case of Trouble 29
- Introduction to Programming 31
- Moving Among Subsystems 33
- Including Common Commands 33
- Using Queries 33
- Types of SCPI Messages 34
- SCPI Data Formats 35
- SCPI Command Completion 36
- Using Device Clear 37
- Programming the DC Source 39
- Overvoltage Protection 40
- Output Current 40
- Output Mode 40
- Oscillation Protection 41
- Output Trigger Model 41
- Making Measurements 43
- Power Line Cycles 44
- Triggered Measurements 45
- Measurement Trigger Model 46
- Output Settling Delay 47
- Operation Status Group 50
- Questionable Status Group 51
- Standard Event Status Group 51
- Status Byte Register 51
- Language Dictionary 53
- 6 – Language Dictionary 54
- Language Dictionary - 6 55
- Calibration Commands 57
- CALibrate:DATA 58
- CALibrate:DATE 58
- CALibrate:LEVel 58
- CALibrate:PASSword 58
- CALibrate:SAVE 59
- CALibrate:STATe 59
- CALibrate:VOLTage 59
- Measurement Commands 60
- MEASure:ARRay:CURRent? 61
- MEASure:ARRay:VOLTage? 61
- MEASure:CURRent? 61
- MEASure:VOLTage? 61
- SENSe:CURRent:RANGe 61
- SENSe:FUNCtion 62
- SENSe:SWEep:NPLCycles 62
- SENSe:SWEep:OFFSet:POINts 62
- SENSe:SWEep:POINts 63
- SENSe:SWEep:TINTerval 63
- SENSe:WINDow 63
- Output Commands 64
- [SOURce:]CURRent[:IMMediate] 65
- [SOURce:]CURRent:TRIGgered 65
- [SOURce:]CURRent:LIMit:BWIDth 65
- [SOURce:]CURRent:MODE 66
- [SOURce:]CURRent:LIMit:MODE 66
- [SOURce:]DELay 66
- [SOURce:]DELay:MODE 66
- [SOURce:]FUNCtion:MODE 67
- [SOURce:]VOLTage:ALC:BWIDth 67
- [SOURce:]VOLTage[:IMMediate] 67
- [SOURce:]VOLTage:TRIGgered 67
- [SOURce:]VOLTage:MODE 68
- Status Commands 69
- STATus:OPERation:NTR 70
- STATus:OPERation:PTR 70
- STATus:PRESet 70
- STATus:QUEStionable[:EVENt]? 70
- STATus:QUEStionable:ENABle 71
- STATus:QUEStionable:NTR 71
- STATus:QUEStionable:PTR 71
- System Commands 72
- Trigger Commands 73
- TRIGger:ACQuire:SOURce 74
- TRIGger[:TRANsient]:SOURce 74
- TRIGger[:TRANsient] 74
- Common Commands 75
- 6 – Language Dictionary 76
- Language Dictionary - 6 77
- Table 6-7. *RST Settings 77
- Specifications 79
- A - Specifications 80
- Specifications - A 81
- Introduction 83
- Equipment Required 83
- Measurement Techniques 84
- Electronic Load 85
- Programming 85
- Test Setup 85
- Voltage Priority Tests 86
- Negative Current Limit (-CL) 87
- Current Priority Tests 88
- Load Effect Tests 89
- Source Effect Tests 91
- Ripple and Noise Tests 94
- Transient Response Tests 95
- Transient 96
- Performance Test Record Form 98
- Enable Calibration Mode 99
- Calibration 101
- Calibration Error Messages 102
- Error Messages 103
- C – Error Messages 104
- Error Messages - C 105
- Line Voltage Selection 107
- Rear Panel Pinout Assignments 109
- Mating Connector Part Numbers 109
- Manual Updates 116
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