HP Cable Box 8591C manual Limits FRQ Time Line Lpit Disp Y N Auto

LIMITS FRQ TIME

LINE

LPIT DISP Y N AUTO

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

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)

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

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