16
limit knob
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If the channel adopts a DC coupling mode, you can quickly measure the DC component of
the signal by observing the difference between the waveform and the signal ground.
If the channel adopts an AC coupling mode, the DC component in the signal is filtered. By
this mode, the AC component of the signal is displayed at a higher sensitivity.
If the channel adopts a GND coupling mode, cut off the input signal. Inside the channel, the
channel input is connected with a zero volt reference electric level.
Setups of channels CH1 and CH2:
1. Setups of channel coupling
By using CH1 as an example, the measured signal is a sine signal with DC offset:
Press
[CH1]
→
“Coupling”
→
“AC”
, and set an AC coupling mode. The DC
component contained in the measured signal will be rejected, as shown in figure
2-6.
Press
[CH1]
→
“Coupling”
→
“DC”
, and set a DC coupling mode. Both the DC
component and the AC component contained in the measured signal can pass
through the channel, as shown in figure 2-7.
Figure 2-6 Set AC Figure 2-7 Set DC
Press [CH1]
→
“Coupling”
→
“GND”, and set a GNC mode. Both the DC component
and the AC component contained in the measured signal are rejected, as shown in
figure 2-8.
AC identification
DC identification
