JD780A Series Analyzers
Using CDMA Signal Analyzer
349
Measurement example
Figure 164
Constellation measurement with CDMA 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 modulation tests” on page 355 for
more information.
Code domain power
The Code Domain Power (CDP) measures the distribution of power across the set of code channels,
normalized to the total power. It helps to verify that each code channel is operating at its proper level
and to identify problems throughout the transmitter design from coding to the RF section. System
imperfections such as amplifier non-linearity will present themselves as an undesired distribution of
power in the code domain.
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.
Summary of Contents for CellAdvisor JD780A Series
Page 52: ...JD780A Series Analyzers 52 Getting Started Figure 6 Example of Web remote on Chrome...
Page 254: ...JD780A Series Analyzers 254 Using LTE FDD Signal Analyzer 3 RS SINR 4 S SS RSSI 5 P SS Power...
Page 323: ...JD780A Series Analyzers Using LTE TDD Signal Analyzer 323 3 RS SINR 4 S SS RSSI 5 P SS Power...
Page 390: ...JD780A Series Analyzers 390 Using EV DO Signal Analyzer 3 Pilot 4 MAC 64 5 MAC 128...
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Page 590: ...JD780A Series Analyzers 590 Appendix Figure 306 Append keywords window...