B-1 :Turn the rotary switch (3-13, Fig.1) to position
B-2 :The test lead (V, COM) connected to the voltage signal, the LCD will display
the waveform and harmonic chart (as SCREEN 2), press ◄ or ► KEY
choose H1 ~ H50 and exhibits harmonic value, press ► KEY> 2 Sec is fast
switch to H26 ~ H50 screen (as SCREEN 3).
B-3 : Press FUNC KEY once the screen is switched to the harmonic map features
(as SCREEN 4), press ► KEY> 2 Sec then quickly switch to H26 ~ H50
screen (as SCREEN 5), press it again to return to the SCREEN 2