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Math FFT
Perform the following operation steps for the amplitude and frequency cursor
measurement of math FFT:
1. Press the Math button to display the math menu in the bottom. Select FFT.
In the right menu, select Format. In the left menu, turn the M knob to select
amplitude unit (V RMS or Decibels).
2.
Push Cursor to display the cursor menu.
3.
In the bottom menu, select Window as Extension.
4.
Select the first menu item in the bottom menu, the Type menu will display at
the right of the screen. In the right menu, select Freq&Vamp for Type, two
blue dotted lines displayed along the horizontal direction of the screen, two
blue dotted lines displayed along the vertical direction of the screen. Cursor
measure window at the left bottom of the screen shows the cursor readout.
5.
In the bottom menu, select Line Type as Freq to make the vertical cursors
active. If the Line in the bottom menu is select as a, turn the M knob to move
line a to the right or left. If b is selected, turn the M knob to move line b.
6. In the bottom menu, select Line Type as Vamp to make the horizontal
cursors active. Select Line in the bottom menu as a or b, turn the M knob to
move it.
7.
In the bottom cursor menu, you can select Window as Main to make the
cursors shown in the main window.
How to Use Autoscale
This is a very useful function for first time users to carry out a simple and quick test
on the input signal. The function is applied to follow-up signals automatically even if
the signals change at any time. Autoscale enables the instrument to set up trigger
mode, voltage division and time scale automatically according to the type, amplitude
and frequency of the signals.
The menu is as follows:
Function Menu
Autoscale
Mode
4.Advanced User Guidebook
Display the channel to which the cursor
measurement will be applied.
Setting
ON
Turn on
Autoscale.
OFF
Turn off
Autoscale.
Follow-up and adjust both vertical and horizontal
settings.
Follow-up and only adjust horizontal scale.
Follow-up and only adjust vertical scale.
Instruction
93
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