User`s guide

Using the Oscilloscope
To change input impedance and input coupling
3-12
To change input impedance and input coupling
• To change the input impedance, press the Input key until the LED for
the desired impedance is illuminated.
Choices are 50 Ω and 1 MΩ.
• To change the input coupling, press the Coupling key until the LED for
the desired coupling is illuminated.
Choices are AC and DC. If you change the input coupling to AC when 50 Ω
impedance is selected, the input impedance changes to 1 MΩ. If you change
the input impedance to 50 Ω, the input coupling changes to DC.
Figure 3-6
Input Impedance and Coupling
Input impedance and input coupling are only available on the 8000A series
oscilloscopes.
An identified active or passive probe automatically sets the proper input impedance.
Use this key to change
t
he input coupling
Use this key to set input
impedance