Chapter 5
Test and Measurement Functions
Normalize
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CX300 ComXpert Operation Manual
Rev. 001
5.11 Normalize
The Normalize function performs a series of internal measurements and corrections to
reduce measurement inaccuracies which may occur due to environmental conditions such
as temperature change. Normalize optimizes various performance parameters, including
carrier leakage, IQ gain and balance, Third Order Intercept (IP3), and level correction.
Normalize can be set to run automatically when the test set’s temperature drifts by more
than 5 degrees.
NOTE
To ensure accurate alignment, the CX300 must be operating at a stable thermal
temperature, therefore, the
Normalize button
is not enabled until after the test set has
been powered on for a short time.
NOTE
To ensure proper normalization, prior to running the Normalize procedure, remove all
external connections from the test set’s RF Input, RF Output, and RF Duplex connectors
Failure to remove external signal sources may introduce inaccuracy in the normalize
procedure due to leakage of the incident signal adding or subtracting in phase with the
internal normalization source signal.
Table 5-32 Normalize Controls and Settings
Parameter
Description
Full
Runs across all frequencies.
Spot
Runs for a specific frequency.
Start
Runs the normalize procedure selected, either a Full or
Spot.
Erase
Clears out the normalize factors of compensation.