Technical data

Chapter 19 563
W-CDMA or W-CDMA (with HSDPA) Analyzer
W-CDMA or W-CDMA (with HSDPA) Analyzer Measurement Settings
W-CDMA or W-CDMA (with HSDPA)
Analyzer
NOTE Knowing which inactive code channels are contributing the most noise to the overall
W-CDMA or W-CDMA (with HSDPA) channel may provide clues to the source of
noise, such as a bad channel card in the base station.
Setting Measurement Time
The Measurement Time setting allows you to alter the speed at which measurements
are being made. Three choices exist: Slow, Medium, and Fast. The test set defaults
to Medium. Slow measurement time provides a more accurate measurement at the
expense of time. Fast measurement time provides a quicker measurement at the
expense of accuracy. Medium measurement time strikes a balance between
measurement speed and measurement accuracy.
Changes in measurement time, or measurement speed, are achieved by varying the
amount of data used to plot the CDP trace, and by varying the type of frame
alignment used. Table on page 564 shows this.
3 [Auto Thres Offset] The default value is 0 dB. Optionally, you can enter a
negative (more aggressive) or positive (more
conservative) value, then press [dB].
Step Notes