Technical data

Chapter 20 585
W-CDMA or W-CDMA (with HSDPA) Over Air
Using the W-CDMA or W-CDMA (with HSDPA) Over the Air Tool
W-CDMA or W-CDMA (with HSDPA)
Over Air
exceed the Threshold Level, are indicated by having their Scrambling Code
displayed on the X-axis. Codes that do not reach the Threshold Level are
considered inactive, and do not have their Scrambling Code displayed.
The Scrambling Code of interest should clearly dominate. The display is useful
when positioning the test set to see what other base stations or sectors need to be
avoided. Awareness of these two parameter values helps you be sure that you are
making valid measurements on the sector of interest.
•
Full view: The lower-right graph (Control View) shows the power in the control
channels (see “Channel Descriptions and Acronyms”).
The Δ (delta) power (relative to CPICH) is shown in the middle of the control
bars.
•
Zoom and Full views: The bottom portion (Metrics View) displays 15
measurement parameters for the current measurement, displayed in three
columns and five rows—each with a value and units. For more information
about the metric display, refer to “Metrics Provided by the W-CDMA or
W-CDMA (with HSDPA) Over Air Measurement” on page 608.
The frequency reference indicator is at the bottom right corner of the screen, the
time reference indicator at the bottom left. For each indicator the text indicates
which reference you have chosen. A green LED indicates a locked condition. A red
“X” indicates an unlocked condition.
NOTE In W-CDMA or W-CDMA (with HSDPA), the P-SCH and S-SCH are not assigned
OVSF codes and therefore do not appear in the code domain trace view. The
E7495A/B features a control channel graph view (Control View) for these two Sync
channels to measure power only, since there are no OVSF codes associated with
these channels. They have special non-orthogonal codes and are only
On 10% of the
time
Table 20-1 Channel Descriptions and Acronyms
Acronym Full Name Viewable in Which Display Area
CPICH Common Pilot Channel Visible in all views (red bar)
PCCPCH Primary Common Control Physical
Channel
Visible in all views (yellow bar)
SCCPCH Secondary Common Control Physical
Channel
Visible in all views (green bar)