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JD780A Series Analyzers
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:
a.
Press the Max Users soft key.
b.
Enter a value up to 16 by using the numeric keys.
c.
Press the Enter soft key.
4.
To set the time interval, complete the following steps:
a.
Press the Time Interval soft key.
b.
Enter a value by using the numeric keys.
c.
Press the Enter soft key.
5.
To place the time cursor to analyze your measurements, complete the following steps:
a.
Toggle the Time Cursor soft key between On and Off to enable or disable the time cursor.
b.
Enter a value by using the numeric keys.
c.
Press the Enter soft key.
NOTE
When the time cursor is enabled, the measurement is put on hold and information about
the time cursor is displayed.
6.
Optional. Press the Miscellaneous soft key, and then do the following(s) as needed:
–
To set the delay, complete the following steps:
a.
b.
c.
NOTE
The Delay setting is used only when there is a time offset in the signals to be measured.
–
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.
434
Press the Delay soft key to set the amount of delay in µs.
Enter a value by using the numeric keys. You can also use the rotary knob.
Press the µs soft key.
Using TD-SCDMA Signal Analyzer
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