Power Sensor Remote Operation 1
U2000 Series Programming Guide 31
Getting the Best Speed Performance
This section discusses the factors that influence the speed of operation
(number of readings/sec) of U2000 Series USB power sensors.
The following factors are those which have the greatest effect upon
measurement speed (in no particular order):
• The selected measurement rate, i.e. NORMal, DOUBle, FAST.
• The trigger mode (for example, free run, trigger with delay etc.).
•The output format: ASCii or REAL.
• The units used for the measurement.
• The command used to take a measurement.
In addition, in FAST mode there are other influences which are described in
“Fast Mode” on page 34.
The following paragraphs give a brief description of the above factors and how
they are controlled from SCPI.
Measurement Rate
There are three possible speed settings NORMal, DOUBle and FAST. These are
set using the [SENSe[1]]:MRATe command.
In NORMal and DOUBle modes, full instrument functionality is available. In
FAST mode averaging, limits are disabled.
Refer to “Specifications” in the U2000 Series USB Power Sensors Operating
and Service Guide to see the influence of these speed settings on the accuracy
and noise performance of the power sensor.
Trigger Mode
The power sensor has a very flexible triggering system. For simplicity, it can be
described as having three modes:
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