MDO3000 Programmer Manual.pdf - 第517页

Commands Listed in Alphabetical Order POWer:INDICa tors This command specifies the state of the measurement indicators for the powe r application. Conditions This command requires a DPO4PWR applic ation module for 4000 se…

100%1 / 1158
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:SOURce {VOLTage|CURRent}
POWer:HARMonics:SOURce?
Arguments
VOLTage specifies voltage source waveform for harmonic tests.
CURRent specifies current source waveform for harmonic tests.
Examples
POWER:HARMONICS:SOURCE VOLTage sets voltage source for harmonic tests.
POWER:HARMONICS:SOURCE? might return :POWer:HARMonics:SOURCE
CURRENT
indicating that the harmonic source is set to current.
POWer:HARMonics:STANDard
This command specifies the standard for 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:STANDard {NONe|IEC|MIL}
POWer:HARMonics:STANDard?
Arguments
NONe sets no standard for harmonic tests.
IEC sets IEC 610003-2 standard for harmonic tests.
MIL sets MIL1399 standard for harmonic tests.
Examples
POWER:HARMONICS:STANDARD IEC sets IEC standard for harmonic tests.
POWER:HARMONICS:STANDARD? might return :POWer:HARMonic s:STANDard
NONe
indicating that no standard is set.
2-486 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
POWer:INDICa
tors
This command specifies the state of the measurement indicators for the power
application.
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:INDICators {OFF|ON|0|1}
POWer:INDICators?
Arguments
OFF or 0 turns off the measurement indicators.
ON or 1 turns on the measurement indicators.
Examples
POWER:INDICATORS 1 turns on the indicator.
POWER:INDICATORS? might return : POWER:INDICators 0 indicating that
the indicator is off.
POWer:MODulation:SOUrce
This command specifies the source waveform for modulation tests. The voltage
source waveform is specified using the POWer:VOLTAGESOurce command and
the current waveform is specified using the POWer:CURRENTSOurce command.
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:MODulation:SOUrce {VOLTage|CURRent}
POWer:MODulation:SOUrce?
Arguments
VOLTage specifies voltage source waveform for modulation tests.
CURRent specifies current source waveform for modulation tests.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-487
Commands Listed in Alphabetical Order
Examples
POWER:MODULAT
ION:SOURCE CURRent
sets the modulation source to Current.
POWER:MODULATION:SOURCE? might return : POWER:MODULATION:SOURCE
VOLT
indicating that the modulation source is set to Voltage.
POWer:MODulation:TYPe
This command specifies the modulation type.
Conditions
This command requires a DP
O4PWR application module for 4000 series models,
or an MDO3PWR application module for MDO3000 series models.
Group
Power
Syntax
POWer:MODulation:TYPe
{PWIdth|NWIdth|PERIod|PDUty|NDUty|FREQuency}
POWer:MODulation:TYPe?
Arguments
PWIdth (positive width) is the distance (time) between the middle reference
(default = 50%) amplitude points of a p
ositive pulse. The measurement is made
on all the cycles in the waveform or gated region.
NWIdth (negative width) measurement is the distance (time) between the middle
reference (default = 50%) amplitude points of a negative pulse. The measurement
is made on all the cycles in the waveform or gated region.
PERIod is the time required to complete the first cycle in a waveform or the
gated region. The time is measured between the mid reference (default being
50%) amplitude points of the waveform.
PDUty (positive duty cycle) is the ratio of the positive pulse width to the signal
period, expressed as a percentage. It is measured on all the cycles in the waveform
or gated region.
Positive Duty Cycle = ((Positive Width)/Period) × 100%
NDUty (negative duty cycle) is the ratio of the negative pulse width to the signal
period, expressed as a percentage. The duty cycle is measured on all the cycles in
the waveform or gated region.
Negative Duty Cycle = ((Negative Width) / Period) × 100%
FREQuency measures all the cycles in the waveform or gated region. Frequency
is the reciprocal of the period and is measured in hertz (Hz), where 1 Hz = 1
cycle per second.
Frequency = 1 / Period
2-488 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual