Good Will Instrument GDS-3000A Series, Руководство пользователя

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MEASUREMENT
71
4. Select the Source from the side
menu.
Range CH1~4, Ref 1~4
5. Press the Vertical Units key from
the side menu to select the vertical
units used.
Range
Linear RMS, dBV RMS
6. Press the Window key from the
side menu and select the window
type.
Range
Hanning, Hamming, Rectangular,
and Blackman.
7. The FFT result represents the frequency-
domain representation of a signal. Hence, the
horizontal scale changes from time to
frequency, and the vertical scale from
voltage/current to dB/RMS.
Math
Source
Position and
Scale
To move the FFT waveform
vertically, press
Vertical until the Div
parameter is highlighted and then
use the
VARIABLE knob.
Range
–12.00 Div ~ +12.00 Div