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© Voltech 2010
Power Analyzer User Manual
:SEL:APK+
:FRD?
Returns Vrms, Arms, Frequency, Watts, VA, Var, power
factor, Vpeak + and Vpeak- in floating point format.
:FRF?
Returns the results selected for confirmation using the
label that appears on the display. In this case will return,
“Vrms, Arms, Freq, Watt, VA, Var, PF, Vpk+, Apk+
Returning Results Repeatedly
The updates the results every 500ms. To return results as soon as they are
available, set up the DSE register to enable bit 1, the New Data Available (NDV) bit.
Then read the DSR register using the ":DSR?" command until it tells indicates that
there is new data available, and then then send a ":FRD?" command to get selected
results.
":DSE 2"
// This enables the NDV bit.
While strDSR <> "2"
":DSR?"
strDSR = received data
WEND
":FRD?"
Receive results
Harmonics
To return harmonics, first the number of harmonic and the scope need to be selected
and then they need to be added to the list of results on the display.
:HMX:VLT:SEQ 0
Select odd and even harmonics (use 1 to select odd
harmonics only)
:HMX:VLT:RNG 9
Return all harmonic from 1 to 9.
