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4 Using the Regenerative Power System
Measurement Quality
The following figure illustrates the relationship between measurement samples (or points), and the
time interval between samples in a typical measurement. You can fine tune the measurement by
specifying the number of points in the measurement acquisition as well as the time interval between
points.
You can configure the measurement acquisition as follows:
Front Panel Menu Reference
Select Measure\Sweep.
Enter the number of points. Then press Select.
Enter the time interval. Then press Select.
The maximum number of sample points available for all measurements is 512 K points (K = 1024). Time
interval values range from 5.12 microseconds to 40,000 microseconds for both voltage and current
measurements. Values above 5.12 microseconds are rounded to the nearest 5.12 microseconds
increment. Values above 10.24 microseconds are rounded to the nearest 10.24 microseconds
increment. Values above 20.48 μs are rounded to the nearest 20.48 microseconds increment.
Note that Keysight RPS models also support the
configure measurement tint and points as previously discussed. The NPLC command automatically
increases the number of points to maintain the shortest possible time interval. If the maximum number
of points for that time interval is reached, it increases the time interval.
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To measure the maximum value:
MEAS:VOLT:MAX?
MEAS:CURR:MAX?
MEAS:POW:MAX?
To measure the minimum value:
MEAS:VOLT:MIN?
MEAS:CURR:MIN?
MEAS:POW:MIN?
To take a measurement and return array data:
MEAS:ARR:VOLT?
MEAS:ARR:CURR?
MEAS:ARR:POW?
SCPI Command
To set the time interval to 60µs with 4096
samples:
SENS:SWE:TINT 60E-6
SENS:SWE:POIN 4096
NPLC
(number of power line cycles) command to
Keysight RP7970 & RP7980 Series Operating and Service Guide
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