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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.

Keysight Technologies FieldFox N9912A Service Guide

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