22
Table 2-5 Digital Filter function menu:
■
“GND” Coupling:
Use GND coupling to display a zero-volt waveform. Internally,
the channel input is connected to a zero-volt reference level.
■
Fine Resolution
：
The vertical scale readout displays the actual Volts/Div setting
while in the fine resolution setting. Changing the setting to coarse does not change
the vertical scale until the VOLTS/DIV control is adjusted.
■
Wave Cancel
：
Press the menu button for the channel to display its vertical menu.
Push the menu button again to remove the waveform.
Option Setting
Instruction
Invert
on
off
Turn on invert function.
Turn off invert function.
Input
1MΩ
50 MΩ
Setup
1MΩ as
input impedance
Setup
50M
Ω
as
input
impedance(SDS1202CE/SDS1204CF and
SDS1302CE/SDS1304CF contain this function)
Digital Filter
Press this button to enter the “Digital Filter
menu”.(See table 2-5)
Next Page
Page 2/2
Press this button to return the first page menu.
Option Setting
Introduction
Digital Filter On
Off
Turn on the digital filter.
Turn off the digital filter.
Type
Setup as LPF(Low Pass Filter).
Setup as HPF(High Pass Filter).
Setup as BPF(Band Pass Filter).
Setup as BRF(Band Reject Filter).
Upper_limit
Turn the “Universal” knob to set upper limit.
Lower_limit
Turn the “Universal” knob to set lower limit.
Return
Return the digital filter main menu.
Note
：
●
The oscilloscope vertical response rolls off slowly above its bandwidth ,
which depending on the model, or 20 MHz when the Bandwidth Limit
option is set to “On”. Therefore, the FFT spectrum can show valid
frequency information higher than the oscilloscope bandwidth. However,
the magnitude information near or above the bandwidth will not be
accurate.
●
If the channel is set to DC coupling
，
you can quickly measure the DC
component of the signal by simply nothing its distance from the ground
symbol.
●
If the channel is set to AC coupling
，
the DC component of the signal is
blocked allowing you to use greater sensitivity to display the AC
component of the signal.
Summary of Contents for SDS1000 Series
Page 146: ...138 Coupling DC...
