MDO3000 Programmer Manual.pdf - 第506页

Commands Listed in A lphabetical 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 D…

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Commands Listed in Alphabetical Order
Conditions
This command re
quires a DPO4PWR application module for 4000 series models,
or an MDO3PWR application module for MDO3000 series models.
Group
Power
Syntax
POWer:HARMonics:MIL:LINEFREQuency <NR1>
POWer:HARMonics:MIL:LINEFREQuency?
Arguments
<NR1> is an unsigned integer that specifies the line frequency for the MIL
standard.
Examples
POWER:HARMONICS:MIL:LINEFREQUENCY 60 sets the MIL line frequency to
60 Hz.
POWER:HARMONICS:MIL:LINEFREQUENCY? might return
:POWER:HARMONICS:MIL:LINEFREQUENCY 400 indicating that the
MIL line frequency is set to 400 Hz.
POWer:HARMonics:MIL:POWERLEVel
This command specifies the power level for calculating limits fo
r MIL-STD-1399
Section 300A harmonics tests.
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:MIL:POWERLEVel {LOW|HIGH}
POWer:HARMonics:MIL:POWERLEVel?
Arguments
LOW specifies low power level for MIL-STD-1399 harmonics tests.
HIGH specifies high power level for MIL-STD-1399 harmonics tests.
Examples
POWER:HARMONICS:MIL:POWERLEVEL HIGH sets the MIL power level to High.
POWER:HARMONICS:MIL:POWERLEVEL? might return
:POWER:HARMONICS:MIL:POWERLEVEL LOW indicating that the MIL power
level is set to Low.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-475
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