MDO3000 Programmer Manual.pdf - 第72页

Command Groups T able 2-36: Power Commands (cont.) Command Description POWer:HARMoni cs:FREQRef: FIXEDFREQV alue This command speci fi es the fi xed reference frequency value for harmonics measurements POWer:HARMonics:IEC:…

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Command Groups
Table 2-35: PictBridge Commands (cont.)
Command
Description
PICTBridge:PAPERSize Sets the output print paper size
PICTBridge:PAPERType This command specifies the paper type
PICTBridge:PRINTQual This command specifies the output print quality
USBDevice:CONFigure Enables or disables the rear USB port for use with Pictbridge printers
Power Command Group
Use the commands in the Power Command Group for power analysis. The power
measurements include:
Power quality
Switching loss
Safe operating area
Harmonics
Ripple
Modulation analysis
This command group is available when the DPO4PWR application module
is installed, except for the MDO3000 series, which requires the MDO3PWR
application module..
NOTE. To ensure that the power commands are enabled, use the command
APPLication:TYPe LIMITMask.
Table 2-36: Power Commands
Command Description
APPLication:TYPe
When a mask/limit or power test application module is installed, one of the associated test
types is always selected by default. This command allows the test type to be changed
from the default.
POWer:CURRENTSOurce This command specifi es the current source for the power application
POWer:DISplay
This command controls whether or not to display the power test results.
POWer:QUALity:VCRESTfactor? This query returns the measurement for the voltage crest factor.
POWer:GATESOurce This command specifies the gate source for the power application
POWer:GATing This command specifies the power application gating
POWer:HARMonics:DISplay:SELect This command specifies the harmonics to be displayed when the harmonics standard is None
POWer:HARMonics:DISplay:TYPe This command specifies the display type for harmonics tests
POWer:HARMonics:FREQRef This command specifies the frequency reference waveform for harmonics tests
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-41
Command Groups
Table 2-36: Power Commands (cont.)
Command Description
POWer:HARMonics:FREQRef:
FIXEDFREQValue
This command specifies the fixed reference frequency value for harmonics measurements
POWer:HARMonics:IEC:CLAss This command specifies the filtering class for IEC harmonics
POWer:HARMonics:IEC:FILter This command specifies the enabled state for filtering of IEC harmonics
POWer:HARMonics:IEC:
FUNDamental
This command specifies the fundamental current for IEC harmonics
POWer:HARMonics:IEC:GROUPing This command specifies the enabled state for grouping of IEC harmonics
POWer:HARMonics:IEC:
INPUTPOWer
Sets of returns the class D input power for IEC harmonics
POWer:HARMonics:IEC:
LINEFREQuency
This command specifies the line frequency for the IEC standard
POWer:HARMonics:IEC:
OBSPERiod
This command speci fies the IEC observation period
POWer:HARMonics:IEC:
POWERFACtor
This command specifies the power factor for IEC harmonics
POWer:HARMonics:MIL:
FUNDamental:CALCmethod
This command specifies the m easurement method for the MIL harmonics fundamental
frequency
POWer:HARMonics:MIL:
FUNDamental:USER:CURrent
This command specifies RMS amperes for User calculation method
POWer:HARMonics:MIL:
LINEFREQuency
This command specifies the line frequency for MIL-STD-1399 Section 300A harmonics tests
POWer:HARMonics:MIL:
POWERLEVel
This command specifies the power level for MIL-STD-1399 Section 300A harmonics tests
POWer:HARMonics:NR_HARMonics Sets of returns the number of harmonics (a value i n the range of 20 to 400) when the
harmonics standard is NONe
POWer:HARMonics:RESults:
HAR<1-400>:FREQuency?
Returns the frequency of the harmonic
POWer:HARMonics:RESults:
HAR<1-400>:IECMAX?
The IEC standard specifi es harmonics measurements to be computed in windows of time,
with each time w indow being nominally 200 ms. This returns the maximum of the RMS
magnitude of the harmonic, computed across successive 200 ms time windows within an
observation period entered by the user
POWer:HARMonics:RESults:
HAR<1-400>:LIMit?
The IEC and MIL standards specify a limit for each harmonic magnitude. Returns the limit
in absolute units, or as a percentage of the fundamental as specified by the standard. IEC
Class C (Table 2) and MIL standards specify the limit as a percentage of the fundamental
POWer:HARMonics:RESults:
HAR<1-400>:PHASe?
Returns the phase of the harmonic in degrees. The phase is measured relative to the
zero-crossing of the reference w aveform. When there is n o reference waveform, the phase
is relative to the fundamental component
POWer:HARMonics:RESults:
HAR<1-400>:RMS:ABSolute?
Returns the RMS magnitude of the harmonic expressed in absolute units
POWer:HARMonics:RESults:
HAR<1-400>:RMS:PERCent?
Returns the RMS magnitude of the harmonic expressed as a percentage of the fundamental
2-42 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Command Groups
Table 2-36: Power Commands (cont.)
Command Description
POWer:HARMonics:RESults:
HAR<1-400>:TEST:IEC:
CLASSALIMit?
Returns PASS, FAIL or NA. Specifies if the IEC Class A higher harmonic limit (and
conditions) are met
POWer:HARMonics:RESults:
HAR<1-400>:TEST:IEC:NORMAL?
Returns PASS, FAIL or NA. Specifies if the Normal IEC harmonic limits are met
POWer:HARMonics:RESults:
HAR<1-400>:TEST:IEC:POHCLIMit?
Returns PASS, FAIL or NA. Specifies if the higher harmonic limit (and conditions) for the 21st
and higher order odd harmonics are m et
POWer:HARMonics:RESults:
HAR<1-400>:TEST:MIL:NORMAL?
Returns the test result for the specified harmonic for the MIL-STD-1399 Section 300A testing
standard
POWer:HARMonics:RESults:IEC:
FUNDamental?
Returns the IEC fundamental frequency
POWer:HARMonics:RESults:IEC:
HARM3ALTernate?
Returns the IE C harmonics test result for the 3rd harmonic: PASS, FA IL or NA
POWer:HARMonics:RESults:IEC:
HARM5ALTernate?
Returns the IEC harmonics test result for the 5th harmonic: PASS, FAIL or NA
POWer:HARMonics:RESults:IEC:
POHC?
Returns the IEC POHC measurement
POWer:HARMonics:RESults:IEC:
POHL?
Returns the IEC POHL measurement
POWer:HARMonics:RESults:IEC:
POWer?
Returns the IEC input power measurement
POWer:HARMonics:RESults:IEC:
POWERFactor?
Returns the IEC power factor measurement
POWer:HARMonics:RESults:
PASSFail?
Returns the overall harmonics test result: PASS, FAIL or NA
POWer:HARMonics:RESults:RMS? Returns the root mean square value of the source waveform
POWer:HARMonics:RESults:SAVe Saves the harmonic results to the specified file in CSV format
POWer:HARMonics:RESults:THDF? Returns the Total Harmonic Distortion (THD) in percentage, measured as a ratio to the RMS
value of the fundamental component of the s ource waveform
POWer:HARMonics:RESults:THDR? Returns the Total Harmonic Distortion ( TH D) in percentage, measured as a ratio to the
RMS value of the source waveform
POWer:HARMonics:SOURce This command specifies the source waveform for harmonics tests
POWer:HARMonics:STANDard This command specifies the standard for harmonics tests
POWer:INDICators This command specifies the state of the measurement indicators for the power application
POWer:MODulation:SOUrce This command specifies the source waveform for modulation tests
POWer:MODulation:TYPe This command specifies the modulation type
POWer:QUALity:APPpwr?
Returns the apparent power measurement
POWer:QUALity:DISplay:APPpwr This command specifies the display state for the apparent power readout
POWer:QUALity:DISplay:
FREQuency
This command specifies the display state for the frequency readout
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-43