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Chapter 11
Measure Mode – Sweep Tab
Reverse Sweep
284
DSAM Help User Guide
Rev. 001
2
Using the arrow keys, select one of the following options:
–
Save Reference
– Saves the current measurement as a refer-
ence file for use as a reference against live measurements.
–
Save File
– Saves the current measurement as a static
measurement file.
–
Load Reference
– Proceeds to a work folder associated with
sweep reference files. Select a reference file from the work
folder. If the selected file is not compatible with the current
received sweep plan, a message is displayed. This feature
enables you to view the difference between the live data and
the data stored in the file. When you select a reference file, the
file name is displayed in the subtitle bar in place of 'REF:
NONE'.
NOTE
Since a reference file is essentially an average of the data obtained
from four sequential traces, at least four sequential traces must
occur before you can save a file to be used as a reference file. If
you attempt to save a reference file before enough data has been
collected, the Not Enough Data error message is displayed.
NOTE
The maximum file name length is twelve (12) characters.
NOTE
To assure exact measurement recording of current display, always
pause (
Shift, 8
) measurement updates before saving a measure-
ment file.
NOTE
When you save an additional file, the file name field in the “save a
file” display contains the last label saved, which you can append,
alter, clear, or simply save unchanged. If you do not change the
label for a file of the same mode type, an “overwrite?” warning is
displayed.
21128026 R001 DSAM Help User Guide.book Page 284 Thursday, February 5, 2009 2:02 PM