JDS Uniphase CellAdvisor JD780A Series, User Manual

Page: 378 / 592

JD780A Series Analyzers
378
Using EV-DO Signal Analyzer
NOTE
When a GPS antenna is connected and locked, GPS coordinates (longitude and latitude)
are displayed on the screen and frequency reference is automatically set to GPS in the
System > Freq Reference .
Table 19 External reference indicators
Type Indicator Description
Internal
(green)
The green INT icon indicates that the instrument uses the built-in
internal time base.
External
(green)
The green EXT icon indicates that an external reference is connected
and locked and that the instrument uses the same reference clock as
the signal source.
External
(red)
The red EXT icon indicates that an external reference is connect but not
locked.
GPS (green) The green GPS antenna icon indicates that a GPS antenna is
connected and locked.
GPS (yellow) The yellow GPS antenna icon indicates that a GPS antenna is
connected and locking is in progress.
GPS (grey) The grey GPS antenna icon indicates that a GPS antenna is not
connected, failed, or unable to be locked.
Conducting spectrum measurements
If you have configured test parameters as described in the
“Configuring test parameters” on page 373,
your measurement result is displayed on the screen as like the following example, Figure 180.
Figure 180 Spectrum measurement screen with EV-DO signal analyzer
Setting trace
You can display up to six traces on the measurement chart simultaneously.