RIGOL DG4000 Series - Manual (Page 177)

Chapter 10 Utility and System Settings RIGOL
DG4000 Series User’s Guide 10-5
Output Polarity
Set the signal on the [Output1] connector as normal or inverted. Waveform
inverts relatively to the offset voltage.
Press Utility  CH1Set  Output to select “Normal” or “Invert”. The default is
“Normal”. The waveform of the first half period of the cycle is positive in “Normal”
mode and negative in “Invert” mode.
0 V
Offset
0 V
Normal Invert Normal Invert
Pay attention to the following after the waveform inverts:
 None of the offset voltage would change.
 Waveform is not inverted in graphic mode.
 Sync signal related to the waveform is not inverted.
Resistance Setting
Resistance setting is applicable to output amplitude and DC offset voltage. DG4000
has a 50Ω fixed serial output resistance for the [Output1] connector at the front
panel. If the actual load does not match the specified value, the voltage level
displayed would not match the voltage level of the component under test. To
ensure correct voltage level, the load resistance setting must match the actual
load.
Press Utility  CH1Set  Resi to select “HighZ” or “Load”. The default is
“HighZ”. If “Load” is selected, use the numeric keyboard to set specific resistance
value. The default is 50Ω and the available range is from 1Ω to 10kΩ. Resistance
setting will be displayed on the screen. As shown in the figure below, CH1
resistance setting is a specified value “50 Ω” and CH2 resistance setting is “HighZ”.