HP 8590 E & L Series Spectrum Analyzers and HP 8591C Cable TV ...

SENTER Segment Entry for Frequency Limit Lines
� POINT specifies a limit value for the coordinate point, and no other frequency points, so
that a POINT segment specifies a limit value for a single frequency. For an upper limit-line,
a POINT segment is indicated by a line drawn from the coordinate point, vertically off the
top of screen. For a lower limit-line, a POINT segment is indicated by a line drawn from the
coordinate point, vertically off the bottom of screen. The POINT segment type should be
used as the last segment in the limit-line table. However, if the last segment in the table is
not specified as the POINT segment type, an implicit point is automatically used. If a visible
POINT segment at the right-hand edge of the display is not desired, add an explicit last point
segment to the limit-line table that is higher in frequency than the stop frequency.
Segments are sorted as they are entered according to starting frequency. A maximum of 20
segments can be defined using SENTER. When the type is omitted, the last type given (or
SLOPE if no previous type has been given) is used.
Programming Commands 5487