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Commands Listed in Alphabetical Order
POWer:MODula
tion:TYPe
Sets or returns the modulation type.
Conditions
This command requires a DPO4PWR application m odule.
Group
Power
Syntax
POWer:MODulation:TYPe
{PWIdth|NWIdth|PERIod|PDU ty|NDUty|FREQuen cy}
POWer:MODulation:TYPe?
Arguments
PWIdth (positive width) is the distance (time) between the middle reference
(default = 50%) amplitude points of a positive 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 C ycle = ((Positive Width)/Period) × 100%
NDUty (negative duty cycle) is the ratio of the negative pulse width to the signal
period, expres sed 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 r egion. Frequency
is the reciprocal of the period and is measured in hertz (Hz), where 1 Hz = 1
cycle per second.
Frequency = 1 / Period
Examples
POWER:MODULATION:TYPE NWIDTH sets the modulation type to Negative Width.
POWER:MODULATION:TYPE? might return :POWER:MODULATION:TYPE PWI
indicating that the modulation type is set to Positive Width.
2-270 MSO4000 and DPO4000 Series Programmer Manual