Owon SDS series User Manual page 26

The description of the Channel Menu is shown as the following list:
Function Setting
Menu
DC
Coupling AC
GROUND
ON
Inverted
OFF
Attenu
Probe
MeasCurr
A/V (mA/V)
V/A (mV/A)
Limit full band
20M
(SDS6062(V)
does not have
this function)
1. To set 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:
(1) Press the CH1 MENU button to show CH1 SETUP menu.
(2) Press the H1 button, the Coupling menu will display at the screen.
(3) Press the F1 button to select the Coupling item as "DC". Both DC and AC
components of the signal are passed. The waveforms are shown as Figure
5-2.
(4) Then, press F2 button to select the Coupling item as "AC". The direct current
component of the signal is blocked. The waveforms are shown as Figure 5-3.
5.Advanced User Guidebook
Description
Pass both AC and DC components of the input signal.
Block the DC component of the input signal.
Disconnect the input signal.
Display inverted waveform.
Display original waveform.
X1
X10 Match this to the probe attenuation factor to have an
X100 accurate reading of vertical scale.
X1000
YES If you are measuring current by probing the voltage
NO drop across a resistor, choose YES.
Turn the M knob to set the Amps/Volts ratio.
Amps/Volts ratio
Volts/Amp ratio is automatically calculated.
Get full bandwidth.
Limit the channel bandwidth to 20MHz to reduce
display noise.
21
= 1/Resistor value