Boonton 4530 Peak Power Meter User Manual - Manual (Page 82)

4-8
Chapter 4 Boonton Electronics
Remote Operation 4530 Series RF Power Meter
FETCh:ARRay:PULse:POWer
Description: Returns an array of the current marker measurements for the specified channel. The array
consists of the average, maximum, and minimum power and peak-to-average ratio between
the two markers, powers at both markers, and the ratio of the two markers. Note the peak-
to-average ratio and marker ratio are returned in dB for log units, and percent for linear units.
Syntax: FETCh[1|2]:ARRay:PULSe:POWer?
Returns: Pavg, Pmax, Pmin, PkToAvgRatio, Pwr@Marker1, Pwr@Marker2, Mrk1/Mrk2
ratio
Valid Modes: Pulse mode only
FETCh:ARRay:AMEAsure:TIMe
Description: Returns an array of the current automatic timing measurements performed on a periodic
pulse waveform. Measurements performed are: the frequency, period, width, offtime and
duty cycle of the pulse waveform, and the risetime and falltime of the edge transitions. For
each of the measurements to be performed, the appropriate items to be measured must be
visible on the screen if the power meter is place in GRAPH mode. Pulse frequency, period,
offtime and duty cycle measurements require that an entire cycle of the pulse waveform
(minimum of three edge transitions) be present. Pulse width measurements require that at
least one full pulse is visible, and are most accurate if the pulse width is at least 15% of the
screen width (timespan). Risetime and falltime require that the edge being measured is
visible, and will be most accurate if the transition takes at least 5% of the screen width. It is
always best to have the power meter set on the fastest timespan possible that meets the
edge visibility restrictions. Set the trace averaging as high as practical to reduce fluctua-
tions and noise in the pulse timing measurements. Note that the timing of the edge transi-
tions is defined by the settings of the
SENSe:PULSe:DISTal , :MESIal and :PROXimal
settings; see the descriptions for those commands.
Syntax: FETCh[1|2]:ARRay:AMEAsure:TIMe?
Returns: PulseFreq, PulsePeriod, PulseWidth, Offtime, DutyCycle, Risetime, Falltime in fundamental
units
Valid Modes: Pulse mode only
Restrictions: Timespan must be set appropriately to allow measurements (see above)
FETCh:ARRay:AMEAsure:POWer
Description: Returns an array of the current automatic power measurements performed on a periodic
pulse waveform. Measurements performed are: peak power during the pulse, average
power over a full cycle of the pulse waveform, average power during the pulse, IEEE top
amplitude, IEEE bottom amplitude, and overshoot. Note the pulse overshoot is returned in
dB for log units, and percent for linear units. Also, the pulse “on” interval
used for peak
and average power calculations is defined by the SENSe:PULSe:STRTGT and :ENDGT
time gating settings. A full pulse must be visible to make average and peak pulse power
measurements, and a full cycle of the waveform must be visible to calculate average cycle
power.
Syntax: FETCh[1|2]:ARRay:AMEAsure:POWer?
Returns: PulseOnPeak, PulseCycleAvg, PulseOnAvg, PulseTop, PulseBot, Overshoot.
Valid Modes: Pulse mode only
Restrictions: Timespan must be set appropriately to allow measurements (see above)