Harmonic Output
EN
HDG3000B User manual Copyright © Qingdao Hantek Electronics Co., LTD
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7 Harmonic Output
The HDG3000B 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 chapter introduces how to configure the generator to output harmonics. Subjects in
this chapter:
7.1 Overview
According to Fourier transform, time domain waveform is the superposition of a series of
sine waveforms as shown in the equation below:
Generally, component with f
1
frequency is called basic waveform, f
1
is basic waveform
frequency, A
1
is basic waveform amplitude and φ
1
is basic waveform phase. The
frequencies of other components (called harmonics) are all integral multiples of the
basic waveform frequency. Components whose frequencies are odd multiples of the
basic waveform frequency are odd harmonics and components whose frequencies are
even multiples of the basic waveform frequency are even harmonics.
HDG3000B can output up to 16th order of harmonic. After selecting CH1 or CH2, press
[Wave] > Harmonic softkey on the front panel to enter the harmonic setting menu.
Users can set the parameters of basic waveform, set the type of harmonic, specify the
highest order of harmonic and set the amplitude and phase of each order of harmonic.
After finishing harmonic parameter setting, press [Output1] button or (and) [Output2]
button on the front panel and the backlight of the button turns on, the instrument outputs
the specified harmonic from the corresponding output terminal.
7.2 Set the Basic Waveform Parameters
Users can set various basic waveform parameters such as frequency, period, amplitude,
DC offset voltage, high level, low level and start phase. It also supports synchronizing
phase operation. Please refer to introductions in "Basic Waveform Output" to set basic
waveform parameters.
7.3 Set the Harmonic Order
The highest order of harmonic output cannot be greater than this setting value.
Press [Wave] > Harmonic softkey on the front panel to enter the harmonic setting
menu, and press Order softkey, at this time, the "Order” on the screen is highlighted,
use the numeric keypad or the direction keys and the knob to input the corresponding
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