Chapter 12
Using TD-SCDMA Signal Analyzer
446
JD700B Series User’s Guide
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 266 Power vs. time (mask) 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 448 for
more information. The DwPTS Power and UpPTS Power are not used in the power vs.
time (mask) tests.
Timogram
Setting measure setup
After configuring test parameters as described in the “Configuring test parameters” on page 429, you can
continue your measurement. The measurement settings can be saved and recalled as a file.
Procedure
1
Press the
MEASURE SETUP
hot key.
2
Press the
Spread Factor
soft key, and then select the spread factor option:
DL Auto
for auto
detection of downlink,
UL Auto
for auto detection of uplink,
SF1
,
SF2
,
SF4
,
SF8
, or
SF16
3
To set the number of maximum users, complete the following steps: