Function introduction
70 AFG31000 Series Arbitrary Function Generator User's Manual
Set up load impedance
The output impedance of the AFG31000 Series Arbitrary Function Generator is 50 Ω. If you connect a
load other than 50 Ω, the displayed Amplitude, Offset, and High/Low values are different from the
output voltage. To make the displayed values the same as output voltage, you need to set load
impedance. To set the load impedance, use the swipe area on the bottom of the touchscreen.
To set up load impedance:
1. Select Basic.
2. Swipe the arrow at the bottom of the screen up and go to the CH1 tab.
3. Select the Load option and choose Load, High Z, or 50/100.
4. Set the load impedance to any value from 1 Ω to 50 Ω.
When the load impedance is set to a value other than 50 Ω, the set value is displayed in the output
status.
NOTE. The load impedance is applied to the amplitude, offset, and high/low level settings.
When dBm is specified for output amplitude units, the amplitude units setting is automatically changed to
Vpp if you select high impedance.
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