Note
1. The oscilloscope vertical response rolls off slowly above its bandwidth , which
depending on the model, or 20 MHz when the Bandwidth Limit option isset 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.
2. 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
3. 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..
●
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.
Setting up the CH1、CH2 Channels
1. Set up the channel couple
Take the CH1 for example; the tested signal is a sine wave signal with DC
deflection:
●
PressCH
1→Coupling→AC, Set to AC couple mode. It blocks the DC
component of the input signal.
●
PressCH
1→Coupling→DC, Set to DC couple mode. Both
DC and AC component could be obstructed.
●
PressCH
1→Coupling→GND, Set to GROUND mode. It disconnects
the input signal.
● Set to AC coupling
● AC Status
○ Set to DC coupling
○ DC Status
○ Set to GND coupling
○ GND Status
Table 2-5 Digital Filter function menu:
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.
Option
Setting
Instruction
Table 2-4 CH1 & CH2 function menu 2:
Invert
On
Off
Turn on invert function.
Turn off invert function.
Input
1MΩ
Setup 1MΩ as input impedance
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
Instruction
Each channel has its own separate Menu. The items are set up separately
according to each channel.
2. Set up the channel bandwidth limit
Take the CH1 for example; the tested signal is a pulse signal with the high
frequency surge:
●
Press
Ch1→BW Limit→ On，Set the band width Limited to open state.
The high frequency component which is higher than 20MHz obstructed.
●
PressCH
1→BW Limit→ Off, Set bandwidth Limited to close state,
the High Frequency component in the tested signal could pass.
12
Digital
S
torage
O
scilloscope
Digital Storage Oscilloscope
13
