84 Keysight FieldFox Handheld Analyzers Service Guide
Theory of Operation
User Calibration in CAT, NA, and VVM Modes
5-
QuickCal - N991xA, N992xA, N993xA only
The QuickCal function mathematically “extends” the preset calibration to the
end of a cable or adapter. It is a firmware only function; it does not involve
analyzer hardware.
Mechanical Calibration
Mechanical Calibration is performed using discrete standards from a Cal Kit.
Several Cal Kit definitions are built into the FieldFox.
Mechanical Cals are extremely accurate when performed using the correct Cal
Kits with standards that are clean and in good repair, and when using correct
connection procedures.
Table 5-5 Cal Status Indicators
Indicator Meaning Additional Indicators
CalRdy Preset (factory) calibration is active * = interpolation active
? = Measurement conditions have changed.
Cal ON Q QuickCal calibration is active * = interpolation active
? = Measurement conditions have changed.
Cal ON U User calibration is active * = interpolation active
? = Measurement conditions have changed.
Cal OFF Calibration is inactive
Cal OFF* No calibration available to activate for this
measurement.
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