Rigol DG4062, User Manual

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RIGOL Chapter 10 Utility Functions and System Settings
DG4000 User's Guide
10-6
Impedance
The impedance setting is applicable to output amplitude and DC offset voltage.
DG4000 has a 50Ω fixed serial output impedance 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 impedance setting must match the actual
load.
Press
Utility

CH1Set

Imped to select "HighZ" or "Load". The default is
"HighZ". If "Load" is selected, use the numeric keyboard or the direction keys and
knob to set a specific impedance value. The default is 50Ω and the settable range
is from 1Ω to 10kΩ. The impedance setting will be displayed on the screen. As
shown in the figure below, the impedance of CH1 is set to a specified value "50 Ω"
and the impedance of CH2 is set to "HighZ".
Figure 10-2 Impedance Setting
The generator will adjust the output amplitude and offset voltage automatically
once the impedance setting is changed. For example, the current amplitude is
5Vpp. At this point, change the output impedance from 50Ω to HighZ and the
amplitude displayed on the screen will double to 10Vpp. If the output impedance is
changed from HighZ to 50Ω, the amplitude will reduce to half of the previous value
(2.5Vpp).
Note: Only the displayed values change with the parameter and the real output
from the generator does not change.
Impedance Setting