Input Impedance; Waveform Invert - Rigol MSO4000 User Manual

2 To Set the Vertical System

Input Impedance

To reduce the circuit load caused by the interaction between the oscilloscope and the
circuit under test, the oscilloscope provides two input impedance modes: 1 MΩ
(default) and 50 Ω.
1 MΩ: at this point, the input impedance of the oscilloscope is very high and the

current flows into the oscilloscope from the circuit under test can be ignored.
50 Ω: match the oscilloscope with devices with 50 Ω output impedance.

Press CH1  Input to set the input impedance of the oscilloscope. When "50 Ω" is
selected, the character "Ω" is displayed in the channel label at the bottom of the
screen.
Note that after the probe is automatically identified, the input impedance will also be
automatically identified and you do not need to set it manually.

Waveform Invert

When waveform invert is enabled, the waveform display rotates 180 degree relative
to the ground potential. When waveform invert is disabled, the waveform display is
normal. Press CH1  Invert to enable or disable waveform invert.
MSO4000/DS4000 User's Guide
RIGOL
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