User Manual

GDS-3000 Series User Manual
120
The vertical scale indicator on the
bottom left of the display changes
accordingly for the specific channel.
Range
2mV/div ~ 1V/div (50Ω/75Ω),
2mV/div ~ 5V/div (1MΩ). 1-2-5
increments
Stop mode
In Stop mode, the vertical scale setting can be
changed but the waveform shape stays the same.
Select Coupling Mode
Panel operation
1. Press a channel key.
2. Press Coupling repeatedly to toggle
the coupling mode for the chosen
channel.
Range
DC coupling mode. The whole
portion (AC and DC) of the signal
appears on the display.
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 signals.
Ground coupling mode. The display
shows only the zero voltage level as a
horizontal line. This mode is useful
for measuring the signal voltage with
respect to the ground level.