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.