Agilent Technologies 8504B, User Manual, Page: 104 / 296

FINAL TRIM SIZE : 7.5 in x 9.0 in
P erforming Measurements
Creating Limit Lines
Draw the limit-line
segments
8. Press 4 SYSTEM 5 .
9.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
LIMIT MENU and then
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
LIMIT LINE ON .
This makes the limit lines visible . Don't worry if the position of the
signal on your screen doesn't exactly match the gures in this tutorial.
At the end of the tutorial, you can simply increase the measurement
span and move the limit lines .
10.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
EDIT LIMIT LINE .
11.
Press
NNNNNNNNNNN
ADD to enter a limit segment and turn on a marker .
The reectometer enters a default segment for you. This segment is
positioned horizontally at 400 mm, has upper and lower vertical limits
of 0 dB , and is a sloping line (SL). It is not visible now .
12.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
POSITION VALUE , and enter 33 mm.
A limit line appears on the screen at the 0 dB level (the top graticule
line in this example).
13.
Press
N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
UPPER LIMIT , and enter 057 dB .
Press 4 x1 5 to terminate the entry . This moves the limit line down to
057 dB . What looks like one line is actually two: limit lines are entered
in pairs .
14. Enter 055 dB to move the upper limit line up to 055 dB . See the
following gure .
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