HP Cable Box 8591C manual Last Span, Limit N e s, Limit Lines Lippits FIX REL

LAST

SPAN

Limit

L i n e s

LIMIT

LINES

LIPPITS FIX REL

Spectrum Analyzer Mode Key Descriptions

Spectrum Analyzer Mode Functions

changes the analyzer frequency span to the previous span setting.

Front-Panel Key Access ISPAN)

accesses the limit-line menus.

Front-Panel Key Access @‘%iZ-]

When accessed by m, pressing LIMIT LINES stores the current limit-line tables in analyzer memory or on the memory card. When accessed by (RECALL), pressing LIMIT LINES recalls limit-line tables from analyzer memory or the memory card. See “To Save a Limit-Line Table or Amplitude Correction Factors” or “To Recall Limit-Line Tables or Amplitude Correction Factors” in Chapter 3 for more information.

Front-Panel Key Access [RECALL] or (SAVE_)

allows you to choose fixed or relative type of limit lines. The fixed (FIX) type uses the current limit line as a reference with fixed frequency and amplitude values. The relative (REL) setting causes the current limit-line value to be relative to the displayed center frequency and reference-level amplitude values. When limit lines are specified with time, rather than frequency, the REL setting only affects the amplitude values. The current amplitude values will be relative to the displayed reference-level amplitude, but the time values will always start at the left edge of the graticule.

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