Keysight DSOX1202A, Руководство пользователя

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Mask Testing
16
Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide 187
Similarly, the vertices in Region 2 describe the line that forms the top of the
bottom part of the mask.
The vertices in a mask file are normalized. There are four parameters that define
how values are normalized:
• X1
•
Δ X
• Y1
• Y2
These four parameters are defined in the Oscilloscope Setup portion of the mask
file.
The Y-values (normally voltage) are normalized in the file using the following
equation:
Y
norm
= (Y - Y1)/
Δ
Y
where Δ Y = Y2 - Y1
To convert the normalized Y-values in the mask file to voltage:
Y = (Y
norm
* Δ Y) + Y1
where Δ Y = Y2 - Y1
The X-values (normally time) are normalized in the file using the following
equation:
X
norm
= (X - X1)/ Δ X
To convert the normalized X-values to time:
X = (X
norm
* Δ X) + X1
Oscilloscope
Setup Information
The keywords "setup" and "end_setup" (appearing alone on a line) define the
beginning and end of the oscilloscope setup region of the mask file. The
oscilloscope setup information contains remote programming language
commands that the oscilloscope executes when the mask file is loaded.
Any legal remote programming command can be entered in this section.
The mask scaling controls how the normalized vectors are interpreted. This in turn
controls how the mask is drawn on the display. The remote programming
commands that control mask scaling are: