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LIMITS
FRQ TIME
Spectrum Analyzer Mode Key Descriptions
Spectrum Analyzer Mode Functions
selects whether limit lines will be entered using frequency
or sweep time to define the segments. Limit lines can be
created by the user to test trace data. They can be specihed
as a table of limit-line segments of amplitude versus
frequency, or of amplitude versus time. Time values are
evaluated with respect to the analyzer sweep time. A time
value of zero corresponds to the start of the sweep, which is
the left edge of the graticule.
Switching the limit line definition between frequency and
time will erase the current limit line table. The message
If you are sure, press key again to purge data will
appear. Press LIMITS FRQ TIME again to purge the limit
line table and switch between frequency and time.
Front-Panel Key Access
@%%%-I
LINE
activates the trigger condition that allows the next sweep to
be synchronized with the next cycle of the line voltage.
Front-Panel Key Access (TRIG)
LPIT
DISP
Y N AUTO
displays any portion of the limit lines that are currently
within the analyzer display boundary. If Y (yes) is
underlined the limit lines are displayed. If N (no) is
underlined they are not displayed. If AUTO is underlined,
the display of the limit lines is dependent on LMT TEST. The
limit lines will be displayed while the limit test function is
turned on, otherwise they will be turned off.
Limit lines cannot be displayed while using the analog+
display mode. Limit testing can be done but the limit lines
will not be displayed.
Front-Panel Key Access
c-1
6-85