10
Calibration (CAT, NA, VVM)
Starting with A.11.25 firmware, for the B
models, the FieldFox output power defaults to
-15 dBm.
Calibration is performed in CAT, NA, and VVM Modes.
A calibration is performed automatically when the
FieldFox is powered ON, CalReady sets the reference
plane at the test port connectors.
For highest accuracy, perform an O, S, L when any of the
following occur:
- The temperature changes significantly.
- The Frequency Range, Resolution, Min Swp Time,
or Power Level is changed.
- When using a phase stable jumper cable or adapter
to connect the DUT to the FieldFox. These should
be high-quality components.
Press Cal 5 then see the FieldFox User’s Guide.
Cal Rdy is shown on the screen when a CalReady is
correcting the measurement.
CAL ON U is shown on the screen when an O, S, L Cal is
correcting the measurement.
When a calibration is being interpolated, an asterisk is
added to the screen annotation as follows: Cal ON*
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