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4-5 TD-SCDMA/HSPA+ Over-the-Air Measurements TD-SCDMA/HSPA+ Signal Analyzer
4-10 PN: 10580-00234 Rev. Y 3GPP MG
4-5 TD-SCDMA/HSPA+ Over-the-Air Measurements
Code Scan
Scans and displays the power of all 32 SYNC-DL codes in sequential order, including Ec/Io
(dB) and Tau (µs). DwPTS Power and Pilot Dominance values are displayed below the table of
codes (see
Figure 4-5 ). The Scrambling Codes (SC) corresponding to each SYNC-DL code are
also displayed next to each code for easy reference.
Tau Scan
Displays the code power versus Tau in a bar graph format. The horizontal axis (Tau) has
dynamic scale. The six strongest SYNC-DL codes are displayed below the bar graph with
their Tau (us) and Ec/Io (dB) values. DwPTS Power and Pilot Dominance values are displayed
below the table of the six strongest codes (see
Figure 4-6 ).
DwPTS Pwr
The power in the Downlink Pilot slot, excluding the gap.
Pilot Dominance
Pilot dominance is a measure of the strength of the strongest code compared to the next
strongest code in the same channel.
Figure 4-5. TD-SCDMA/HSPA+ OTA Code Scan