To output harmonic, Overview, To output harmonic -30 – RIGOL DG1000Z Series User Manual
Page 80: Overview -30, 2 sin( ) 2 sin( ) 2 sin( )
RIGOL
Chapter 2 Front Panel Operations
2-30
DG1000Z User’s Guide
To Output Harmonic
DG1000Z can be used as a harmonic generator to output harmonic with specified
order, amplitude and phase. It is usually used in the test of harmonic detector device
or harmonic filter device. This section introduces how to configure the generator to
output harmonic.
Overview
According to Fourier transform, time domain waveform is
the superposition of a
series of sine waveforms as shown in the equation below:
......
)
2
sin(
)
2
sin(
)
2
sin(
)
(
3
3
3
2
2
2
1
1
1
+
+
+
+
+
+
=
ϕ
π
ϕ
π
ϕ
π
t
f
A
t
f
A
t
f
A
t
f
Generally, component with
1
f
frequency is called fundamental waveform,
1
f
is
fundamental waveform frequency,
1
A
is fundamental waveform amplitude,
1
ϕ
is
fundamental waveform phase. The frequencies of the other components (called
harmonics) are all integral multiples of the fundamental waveform frequency.
Components whose frequencies are odd multiples of the fundamental waveform
frequency are called odd harmonics and components whose frequencies are even
multiples of the fundamental waveform frequency are called even harmonics.
DG1000Z can output up to 8th harmonic. After selecting CH1 or CH2, press Sine
Harm to select “On” and press Harmonic Para to enter the harmonic setting menu.
You can set the type of harmonic, specify the highest order of harmonic and set the
amplitude and phase of each order of harmonic. If you want to set various
parameters of fundamental waveform, please set the parameters of Sine.
After finishing harmonic parameters setting, press Output1 and the backlight turns
on, the instrument outputs the specified harmonic from the corresponding output
terminal.