Loading ...
Loading ...
Loading ...
Basic Operation
DSO8000E Series HandHeld Oscilloscope User Manual 25
Vertical Zoom and Position
When the FFT spectrum is being displayed, the channel vertical keys become the zoom and
position controls corresponding to their respective channels. The VOLTS key provides the
following zoom factors: X1(default), X2, X5 and X10. The FFT spectrum is magnified vertically to
the marker M (math waveform reference point on the left edge of the screen). Click the Vertical
Position key to move up the spectrum.
5.3.1.7 Using Cursors to Measure FFT Spectrum
You may use cursors to take two measurements on the FFT spectrum: amplitude (in dB) and
frequency (in Hz). Amplitude is referenced to 0db that equals 1VRMS here. You may use cursors
to measure at any zoom factor.
Push the CURSOR button, choose the Source option and then select Math. Press the Type option
button to select between Amplitude and Frequency. Click the SELECT CURSOR option to choose
a cursor. Then move Cursor S and Cursor E. Use the horizontal cursor to measure the amplitude
and the vertical cursor to measure the frequency. Now the display at the DELTA menu is just the
measured value, and the values at Cursor S and Cursor E.
Delta is the absolute value of Cursor S minus Cursor E.
5.4 Trigger Controls
The trigger can be defined through the Trigger Menu. There are six types of trigger: Edge, Video,
Pulse Width, Alter, Slope and Overtime. Refer to the following tables to find a different set of
options for each type of trigger.
TRIG MENU
Push this button to display trigger menus. The edge trigger is in common use. See the table below
for details.
Frequency Cursors
Amplitude Cursors
Loading ...
Loading ...
Loading ...