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Settling
Settling refers to the amount of time delay introduced into the measurement cycle
to allow signal transients to propagate through the analysis chain and settle out.
There are two options:
1. Full settling introduces the appropriate delay for all signal transients which might have
2. Fast settling introduces no delay for internal or external signal transients to settle.
NOTE:
CDMA measurements are not affected by the trigger mode settling parameter. CDMA
measurements are made with a digital signal processor (DSP) which does not require the
settling times associated with analog hardware circuitry.
Rho Suite of Measurements
The following group of CDMA measurements is referred to as the "Rho Suite of
Measurements" because a result for each of the following measurements is
available each time the Rho Suite of measurements is triggered:
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occurred at the front panel coincident with the trigger command, to pass through the
analysis chain and settle out. Delays are also inserted to allow for internal hardware
transients to settle.
There will still be delays introduced by the couplings between autotuning and autor-
anging. If the operator wishes to remove these delays as well, all autoranging and
autotuning functions must be turned OFF and the operator must explicitly set the rang-
ing amplifiers and the frequency tuning. Delays introduced by the measurement pro-
cesses themselves cannot be eliminated.
Traffic Rho or TM Rho (only one can be selected)
Frequency Error
Amplitude Error
Time Offset
Phase Error
Carrier Feedthrough
Chapter 3, Operating Overview
Measurement Triggering Process
75
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