MDO3000 Programmer Manual.pdf - 第507页

Commands Listed in Alphabetical Order POWer:HARMon ics:RESult s:HAR<1-400>:IECMAX? (Query Only) The IEC Standard specifies harmonics measurements to be computed in time windows, with each time window being nominally…

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Commands Listed in Alphabetical Order
POWer:HARMon
ics:NR_HARMonics
This command specifies the number of harmonics (value ranging from 20 to 400)
when the harmonics standard is NONe.
Conditions
This command requires a DPO4PWR a
pplication module for 4000 series models,
or an MDO3PWR application module for MDO3000 series models.
Group
Power
Syntax
POWer:HARMonics:NR_HARMonics <NR3>
POWer:HARMonics:NR_HARMonics?
Arguments
<NR3> is a floating point number that specifies the number of harmonics.
Examples
POWER:HARMONICS:NR_HARMONICS 100 sets the number of harmonics to 100.
POWER:HARMONICS:NR_HARMONICS? might return
:POWer:HARMonics:NR_HARMONICS 40 indicating that the number of
harmonics is set to 40.
POWer:HARMonics:RESults:HAR<1-400>:FREQuency? (Query Only)
Returns the frequency of the harmonic.
NOTE. The query returns NA, if the curre nt harmonic standard is set to a new
standard other than the returned query.
Conditions
This command requires a DPO4PWR application module for 4000 series models,
or an MDO3PWR application module for MDO3000 series models.
Group
Power
Syntax
POWer:HARMonics:RESults:HAR<1-400>:FREQuency?
Examples
POWER:HARMONICS:RESULTS:HAR400:FREQUENCY? might return
:POWER:HARMONICS:RESULTS:HAR400:FREQUENCY 24000 indicating that
the harmonic frequency is set to 24000.
2-476 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
POWer:HARMon
ics:RESults:HAR<1-400>:IECMAX? (Query Only)
The IEC Standard specifies harmonics measurements to be computed in time
windows, with each time window being nominally 200 ms. This returns the
maximum of th
e RMS magnitude of the harmonic, computed across successive
200 ms time windows within an observation period entered by the user.
NOTE. The query returns NA, if the current harmonic standard is set to a new
standard other than the returned query.
Conditions
This command requires a DPO4PWR application module for 4000 series models,
or an MDO3PWR application module for MDO3000 series models.
Group
Power
Syntax
POWer:HARMonics:RESults:HAR<1-400>:IECMAX?
Examples
POWER:HARMONICS:RESULTS:HAR400:IECMAX? might return
:POWER:HARMONICS:RESULTS:HAR400:IECMAX 1.0 indicating that the
maximum valu
e is 1.0 A for the 400th harmonic.
POWer:HARMonics:RESults:HAR<1-400>:LIMit? (Query Only)
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.
Conditions
This command requires a DPO4PWR application module for 4000 series models,
or an MDO3PWR application module for MDO3000 series models.
Group
Power
Syntax
POWer:HARMonics:RESults:HAR<1-400>:LIMit?
Examples
POWER:HARMONICS:RESULTS:HAR3:LIMIT? might return
:POWER:HARMONICS:RESULTS:HAR3:LIMIT 2.30 indicating that
the harmonic magnitude limit for IEC standard for the 3rd harmonic is set to
2.30 A.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-477
Commands Listed in Alphabetical Order
POWer:HARMon
ics:RESults:HAR<1-400>:PHASe? (Query Only)
Returns the phase of the harmonic in degrees. The phase is measured relative
to the zero-crossing of the reference waveform. When there is no reference
waveform, th
e phase is relative to the fundamental component.
Conditions
This command requires a DPO4PWR application module for 4000 series models,
or an MDO3P
WR application module for MDO3000 series models.
Group
Power
Syntax
POWer:HARMonics:RESults:HAR<1-400>:PHASe?
Examples
POWER:
HARMONICS:RESULTS:HAR400:PHASE?
might return
:POWER:HARMONICS:RESULTS:HAR400:PHASE 0 indicating that the harmonic
phaseissetto0indegrees.
POWer:HARMonics:RESults:HAR<1-400>:RMS:ABSolute? (Query Only)
Returns the RMS magnitude of the harmonic in absolute units.
Conditions
This command requires a DPO4PWR application module for 4000 series models,
or an MDO3PWR application module for MDO3000 series models.
Group
Power
Syntax
POWer:HARMonics:RESults:HAR<1-400>:RMS:ABSolute?
Examples
POWER:HARMONICS:RESULTS:HAR400:RMS:ABSOLUTE? might return
:POWER:HARMONICS:RESULTS:HAR400:RMS:ABSOLUTE 1.0 indicating that
the RMS magnitude of the harmonic is set to 1.0 A.
POWer:HARMonics:RESults:HAR<1-400>:RMS:PERCent? (Query Only)
Returns the RMS magnitude of the harmonic expressed as a percentage of the
fundamental.
Conditions
This command requires a DPO4PWR application module for 4000 series models,
or an MDO3PWR application module for MDO3000 series models.
2-478 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual