4.Advanced User Guidebook
22
7.
Select
Vertical (V/div)
in the right menu, turn the
M
knob to adjust the vertical division
of Math waveform.
User defined function
1.
Press the
Math
button to display the math menu in the bottom.
2.
Select
User Function
in the bottom menu, an expression input keyboard pops up.
Channel
Confirm
Clear
Operators
Integral
Differential Square root
Expression
3.
Create an expression. When done, choose
in the keyboard to confirm. The
division of Math waveform is displayed at the left bottom of screen.
Digital Filter
Digital filter provides 4 types of filters (low pass, high pass, band pass and band reject).
The specified frequencies can be filtered by setting the cut-off frequency.
1.
Press the
Math
button to display the math menu in the bottom.
2.
Select
DIR
in the bottom menu.
3.
In the right menu, select
channel
as
CH1
or
CH2
.
4.
In the right menu, select
type
, select the desired filter type.
5.
In the right menu, select
window
, select the desired window.
6.
When
low-pass
or
high-pass
type is selected, select
cut-off fre
in the right menu.
When
band-pass
or
band-reject
type is selected, select
upper
or
down
in the right
menu. Turn
M
knob to adjust the frequency.
7.
In the right menu, select
Vertical (div)
, turn
M
knob to adjust the vertical position of
Math waveform. The voltage division of Math waveform is the same as the selected
channel.
Note
: On the Scan format, digital filter is disabled.
Using FFT function
The FFT (fast Fourier transform) math function mathematically converts a time-domain
waveform into its frequency components. It is very useful for analyzing the input signal on
Oscilloscope. You can match these frequencies with known system frequencies, such as
system clocks, oscillators, or power supplies.
