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The description of the Channel Menu is shown as the following list:
Function Menu
Setting
Description
Coupling
DC
AC
GROUND
Unblock the AC and DC components in the input signal.
Block the DC component in the input signal.
The Input signal is interrupted.
Inverted
OFF
ON
The waveform is displayed normally.
Initiate the waveform inverted function.
Probe
1X
10X
100X
1000X
Choose one according to the probe attenuation factor to make
the vertical scale reading accurate.
Limit
full band
20M
Get full bandwidth.
Limit the channel bandwidth to 20MHz to reduce display noise.
11.2. Setting Channel Coupling
Taking the Channel 1 for example, the measured signal is a square wave signal containing the direct current
bias. The operation steps are shown as below:
* Press the
CH1 MENU
button and call out the CH1 SETUP menu.
* Press the
H1
button, the Coupling menu will display at the screen.
* Press the
F1
button to select the Coupling item as “
DC
”. By setting the channel coupling as DC mode, both
DC and AC components of the signal will be passed.
* Then, press
F2
button to select the Coupling item as “
AC
”. By setting the channel coupling as AC mode,
the direct current component of the signal will be blocked. The waveforms are shown as
Fig. 15
.
Fig. 15
AC Coupling Oscillogram
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