JDS Uniphase CellAdvisor JD780A Series, User Manual

Page: 430 / 592

JD780A Series Analyzers
430
Using TD-SCDMA Signal Analyzer
b. Enter a value up to 16 by using the numeric keys.
c. Press the Enter soft key.
5.
Optional . To set the delay, complete the following steps:
a. Press the Delay soft key to set the amount of delay in µs.
b. Enter a value by using the numeric keys. You can also use the rotary knob.
c. Press the µs soft key.
NOTE
The Delay setting is used only when there is a time offset in the signals to be measured.
6.
Optional . Press the Miscellaneous soft key, and then do the following(s) as needed:
–
To select how to determine scrambling estimation, toggle the Scramble soft key and select
Spec or Full .
NOTE
The Spec searches
“Sync Sequence Number” from 0 to 31 based on the TD-SCDMA
specification and determines
“Scrambling Code Number” by using the sync sequence
number, while the Full does from 0 to 127 fully.
–
To select how to determine the Midamble spread factor estimation either in full or maximum
power search, toggle the
Mid SF Map soft key and select Max or Spec .
NOTE
The Max determines the spread factor of the Midamble by using the maximum power of
the received Midamble, while the Spec searches
“Default Midamble Allocation” based on
the TD-SCDMA specification.
–
To select the detect mode, press the Detect Mode soft key and then select the option:
Auto , QPSK/8PSK , QPSK , 8PSK , 16 QAM , or 64 QAM .
Measurement example
Figure 212 Power vs. time (slot) measurement with TD-SCDMA signal analyzer
NOTE
You can use the LIMIT hot key to analyze your measurements with the user-definable
limit and Pass/Fail indication. See
“Setting limit for power vs. time tests” on page 435 for
more information.