E4990A Help
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Converting From a Reference Point to a Relative Value
1. Activate the reference marker.
2. Move the reference marker at the point to be used as the reference.
3. Click Ref Marker Mode to turn on the reference mode.
4. With the reference mode turned ON, the stimulus values and
response values are indicated in relative values referred to by the
position of the reference marker.
5. Activate your desired marker, then move it to your desired position.
Pressing Marker > Marker -> Ref Marker enables you to place
the reference market at the position of the currently active marker.
The reference mode then turns ON automatically.
Reading Actual Measurement Point/Value Interpolated between Measurement
Points
The point on the trace on which a marker can be placed differs depending
on how the discrete marker mode is set up.
Value Description
Turning on
discrete
mode
(Discrete
ON)
A marker moves only between actual measurement
points. When a specific marker's stimulus value is
specified as a numerical value, the marker is placed at
the measurement point closest to the specified value. A
marker placed between interpolated points with the
discrete mode OFF automatically moves to the nearest
measurement point when the discrete mode is turned
ON.