User Manual – SEFRAM 53X2DC
63
AC coupling mode. Only the AC
portion of the signal appears on the
display. This mode is useful for
observing AC waveforms mixed with
DC signal.
Inverting the waveform vertically
1.
Press the Channel key.
CH 1
Procedure
2.
Press
Invert
. The waveform
becomes inverted (upside
down) and the Channel
indicator in the display
shows a down arrow.
Invert
Off
Original
Inverted
Limiting the waveform bandwidth
Background
Bandwidth limitation puts the input signal into a
20MHz (
−
3dB) low-pass filter. This function is
useful for cutting off high frequency noise to see
the clear waveform shape. This function is
available only for GDS-1102 and GDS-1062.
Procedure
1.
Press the Channel key.
CH 1
User Manual – SEFRAM 53X2DC
64
2.
Press
BW Limit
to turn on or
off the limitation. When
turned on, the BW incicator
appears next to the Channel
indicator in the display.
Example
BW Limit Off
BW Limit On
Selecting the probe attenuation level
Background
A signal probe has an attenuation switch to lower
the original DUT signal level to the oscilloscope
input range, if necessary. The probe attenuation
selection adjusts the vertical scale so that the
voltage level on the display reflects the real value,
not the attenuated level.
1.
Press the Channel key.
CH 1
Procedure
2.
Press
Probe
repeatedly to
select the attenuation level.
3.
The voltage scale in the channel indicator
changes accordingly. There is no change in the
waveform shape.
Range
x1, x10, x100
Note
The attenuation factor adds no influence on the
real signal; it only changes the voltage scale on the
display.
