Keysight FieldFox Handheld Analyzers Service Guide 35
Tests and Adjustments
Operational Check
5. Press Mode. If SA is available then continue below, otherwise the
operational check is complete.
— For this step Port 2 should be unconnected or connected to a short
or load.
— Press SA.
— The measurement trace should be below the following limits:
For N991xA, N992xA, and N993xA models:
Up to 4 GHz: limit = 45 dBm
Up to 6.5 GHz: limit = 42 dBm
Up to 9 GHz: limit = 39 dBm
Up to 14 GHz: limit = 33 dBm
Up to 18 GHz: limit = 28 dBm
Up to 26.5 GHz: limit = 18 dBm
For N995xA, and N996xA models:
Up to 4 GHz: limit = 45 dBm
Up to 6.5 GHz: limit = 44 dBm
Up to 9 GHz: limit = 43 dBm
Up to 14 GHz: limit = 42 dBm
Up to 18 GHz: limit = 40dBm
Up to 26.5 GHz: limit = 39 dBm
Up to 33 GHz: limit = 37 dBm
Up to 44 GHz: limit = 30 dBm
Up to 50 GHz: limit = 27 dBm
— The general slope of the trace should trend upward. A flat trace
indicates an uncalibrated condition that requires adjustments.
— If a segment of the trace is offset by more than 10 dBm from the
general slope of the trace, this indicates a hard ware failure that
requires service.
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