Chapter 10
Using CDMA Signal Analyzer
378
JD700B Series User’s Guide
Procedure
1
Press the
MEASURE SETUP
hot key.
2
To set the incremental step for the PN offset, complete the following steps:
Press the
PN Increment
soft key.
Enter a value by using the numeric keys.
Press the
Enter
soft key.
3
Optional
. Go to
SAVE/LOAD > Save
, and then select the save option from the choices available
for your measurement mode. See “Using save” on page 35 for more information.
Measurement example
Figure 224 Multipath profile measurement with CDMA OTA signal analyzer
Code domain power
Channels with high correlation factors are determined to be active channels and are indicated as such on
the display. Once the channels are decoded, the analyzer determines the power of each channel relative to
the total signal power.
This measurement helps to verify that each code channel is operating at its proper level and helps to identify
problems throughout the transmitter design from the coding to the RF section. System imperfections, such
as the non-linearity of amplifiers, will present themselves as an undesired distribution of power in the code
domain.
Setting measure setup
After configuring test parameters as described in “Configuring test parameters” on page 352, 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.
Содержание CellAdvisor JD700B Series
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