Programmable AC Source 61501/61502/61503/61504 User’s Manual
5-10
The HARmonic function can calculates the THD, DC, fundamental value of output current or
output voltage. It also calculates 2nd ~ 40th order of harmonic value in fundamental
frequency 50Hz or 60Hz.
SOURCE = V / I:
the source of measured data. V: the output voltage. I: the output current.
FREQ = 50 / 60 Hz:
the fundamental frequency of source.
TIMES = SINGLE / CONTINUE:
the way of measurement result displayed in LCD. SINGLE:
the display will remain the measured data when execute. It takes about 3 second to get the
result. CONTINUE: the display will refresh to new measurement data. It takes about 10
second to get a stable new result.
PARAMETER = PERCENT / VALUE:
the
data form of each harmonic order.
PERCENT: the percentage of fundamental value. VALUE: the absolute value.
Press
SHIFT
, then
ENTER
to execute harmonics measurement.
THD : the total harmonic distortion of output wave.
DC : the dc value of output wave.
Fundament : the fundamental value of output wave.
Press
SHIFT, then to change to next page.
Press
SHIFT, then or to see other harmonic orders. Press PAGE/EXIT to go back to
HAR set page.
The following figure shows that when PARAMETER set to VALUE.
When users press
SHIFT then ENTER to execute harmonics
measurement, the AC source will regulate the internal gain by measured
data automatically. By this way, the AC source can get more accurate
data of each harmonic. Because of this reason, the user had better
THD = 0.0 % [ HAR ]
DC = 0.0
Fundament = 0.0
T
N % N % [ HAR ]
2 0.00 3 0.00
4 0.00 5 0.00 S
6 0.00 7 0.00 T
N VALUE N VALUE [ HAR ]
2 0.00 3 0.00
4 0.00 5 0.00 S
6 0.00 7 0.00 T
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