User Manual

Application examples
10. For the efficien
cy calculations, enter (CH2:W/CH1:W)*100 and then press
.Press to go back to the Math menu w here the function can be
renamed and un
its can be added, if desired.
11. Go back to the Math menu and scroll down to the newly edited function
and enable the function by p ressing
. Select all functions that need to
be displayed on the screen.
12. Press
to view the Results screen.
13. To view sel
ected math formulas, press
.
14. To view math formulas along with other results, pre ss
to view the
Results s
creen and press
multiple times until the math window appears
at the bottom of the screen.
You are n
ow ready to take efficiency measurements on an AC-DC power supply.
Further settings if required
Data logging. The logging feature allows you to log data over time for prolonged
efficiency testing involving load and source sweeps. Use the DATA OUT key
to log data to any compatible flash drive connected to the front panel USB
connec
tor. The actual logging interval can be changed by pressing
and going
to Interfaces → USB Host Data Out. The log file will be saved as a .csv file.
Waveforms and harmonics. To monitor AC input waveforms and harmonics, use
the
or key r espectively. Switch between channels by using the arrow
keys on the left panel. Various options for viewing waveforms and harmonics can
be selected from within the Graphs and Waveforms m enu.
PA3000 Power Analyzer User Manual 107