Owon HDS-N Series Manual de usuario descargar pdf (Pagina 74)

OWON HDS-N Series Handheld DSO & DMM 8-Advanced Function of Oscilloscope

▲/▼ — FFT Zero

Press VOLTS POSITION (red) and the screen show as follows:

▲/▼—CH1 OFF

9. When FFT source is CH1:

 If left bottom of the screen displays "

▲

▼—FFT dB Scale ", press ▲(red) and

▼(red) button to adjust dB value of each DIV, including 1dB, 2dB, 5dB, 10dB,

20dB;

 If left bottom of the screen displays "

▲/▼—CH1 Volts/Div " , press ▲(red) and

▼(red) button to adjust voltage of CH1, and "CH1 2v~ "shows in left bottom of

the screen;

 If left bottom of the screen displays "

▲/▼—FFT Zero", press ▲ (red) and ▼

(red) button to adjust the position of the waveform along the vertical position such

as "FFT 1.20 divs" which means the pink cursor departures from the center line for

1.20 DIV, press VOLTS POSITION (red) to display "

▲

▼—FFT dB Scale ",

"CH1 20dB" shows on the left bottom, that is the arithmetic product is 24.0dB.

The operation steps are the same as FFT source CH2.

10. Press OPTION (yellow), the following prompts shows on the left bottom on the screen.

◄/►— Time Base

▲/▼— Trig

◄/►— Time

▲/▼— Trig

When "

◄/►— Time" is displayed, press OPTION ◄ and OPTION ► menu

button to adjust the position of the waveform along the horizontal position. "FFT

-2.00divs" shown on the left bottom means the section start of the waveform

departures from the Origin for 2.00DIV. The shown frequency of M is the exact

frequency of the cursor point in the middle of spectrum. Shown as Figure.60.

When "

◄/►— Time Base" is displayed, press OPTION ◄ and OPTION ► to

adjust horizontal base on horizontal base, such as "250 Hz/DIV

（

5 kS/s

）

" will be

shown on the bottom status bar.

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Owon HDS-N Series Manual de usuario Pagina 74