User`s manual

1-6
IM 701610-01E
Offset Voltage <Section 5.5>
When observing a voltage riding on top of a predetermined voltage, an offset voltage can
be applied to eliminate the predetermined voltage so that only the changes in the signal
can be observed with higher voltage sensitivity.
Normally, the offset voltage does not affect the cursor measurement values, automated
measurement of waveform parameters, and computed values. However, you can turn
ON offset cancel to apply the offset voltage to them. (See section 14.4.)
1 V/div, Offset: 0 V, Position: 0 div
1 V/div, Offset: –2 V 500 mV/div, Offset: –2 V
When offset cancel is ON
When offset cancel is OFF
Input Coupling <Section 5.3>
When you only want to observe the amplitude of an alternating current signal, eliminating
the direct current components from the input signal makes observation easier. You may
also want to check the ground level or observe the input signal waveform with the offset
voltage removed. In these cases, you can change the input coupling setting. This will
switch the coupling method, which determines how the input signal is input to the vertical
control circuit (voltage axis).
The input coupling method can be chosen from the following:
AC
The input signal is sent through a capacitor to the attenuator
in the vertical control circuit. This method can be used when
you just want to observe the amplitude of the alternating
current signal, eliminating the DC components from the input
signal.
DC
The input signal is sent directly to the attenuator in the vertical
control circuit.
This method can be used when you want to observe both the
DC and AC components of the vertical input signal.
GND
The ground signal, not the input signal, is connected to the
attenuator in the vertical control circuit. This method enables
observation of the ground level on the screen.
1.2 Setting the Vertical and Horizontal Axes
1 MΩ
Vertical
control
circuit
Input terminal
1 MΩ
Vertical
control
circuit
Input terminal
Vertical
control
circuit
Input terminal