Chapter 11
Using EV-DO Signal Analyzer
418
JD700B Series User’s Guide
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 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 248 PN scanner measurement with EV-DO OTA signal analyzer
Multipath profile
The Multipath Profile enables you to determine RF environmental conditions of testing area. It indicates the
amount of power of the dominant pilot signal that is dispersed outside the main correlation peak due to
multipath echoes that are expressed in dB. This value should be very small ideally.
The multipath profile is the result of portions of the original broadcast signal arriving at the receiving antenna
out of phase. This can be caused by the signal being reflected off objects such as buildings, or being
refracted through the atmosphere differently from the main signal.
Setting measure setup
After configuring test parameters as described in the “Configuring test parameters” on page 389, 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.
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