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JD780A Series Analyzers
Procedure
1.
Press the TRACE/DISPLAY hard key.
2.
Press the Code Order soft key, and then select the code order option from the following choices:
–
Hadamard: To assign the number based on Walsh code order and display the measured
code power according to the assigned number in sequence.
–
Bit Reverse: Code number in binary bit is reversed relative to the Hadamard method.
3.
Toggle the Base Code Length soft key and select the base Walsh code number: 64 or 128.
CDP Table
The CDP Table is used to look at a numeric and textual description of all the active code channels in
the signal.
Setting measure setup
After configuring test parameters as described in the "Configuring test parameters" on page 334, you
can continue your measurement. The measurement settings can be saved and recalled as a file. You
can also use JDViewer, PC application software to configure a measure setup, save as a file, and load
the file on to the instrument.
Procedure
1.
Press the MEASURE SETUP hot key.
2.
To set the Pseudo-Noise (PN) offset, complete the following steps:
a.
Toggle the PN Offset soft key between Auto and Manual.
b.
Enter a value by using the numeric keys to set manually.
c.
Press the Enter soft key.
3.
To set the incremental step for the PN offset, complete the following steps:
a.
Press the PN Increment soft key.
b.
Enter a value by using the numeric keys.
c.
Press the Enter soft key.
4.
To set the threshold between Auto and Manual, complete the following steps:
a.
Press the Threshold soft key. Its default setting is -27 dB.
b.
Enter a value between -50 and zero by using the numeric keys to change the value in the
Manual mode.
c.
Press the Enter soft key.
5.
Toggle the Q-Paging soft key between On and Off to enable or disable the quick page channel
that indicates the power of Quick Page Walsh code 80.
354
Using CDMA Signal Analyzer
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