GDS-1000A-U Series User Manual 
90 
Vertical View (Channel) 
The Vertical view section describes how to set the vertical scale, 
position, bandwidth limitation, coupling mode, and attenuation. 
Moving the waveform position vertically 
 
To move the waveform up or 
down, turn the vertical position 
knob for each channel. 
Selecting the vertical scale 
 
To change the vertical scale, 
turn the VOLTS/DIV knob; left 
(down) or right (up). 
2mV/Div ~ 10V/Div, 1-2-5 increments 
Selecting the coupling mode 
 
1.  Press the Channel key. 
2.  Press Coupling repeatedly to 
select the coupling mode. 
DC coupling mode. The whole 
portion (AC and DC) of the signal 
appears on the display. 
Ground coupling mode. The display 
shows only the zero voltage level as a 
horizontal line. This mode is useful 
for measuring the signal amplitude 
with respect to the ground level.