JDS Uniphase CellAdvisor JD780A Series, User Manual

Page: 160 / 592

JD780A Series Analyzers
160
Using WCDMA/HSPA+ Signal Analyzer
Table 13 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 155,
your measurement result is displayed on the screen as like the following example, Figure 57.
Figure 57 Spectrum measurement screen with WCDMA signal analyzer
Setting trace
You can display up to six traces on the measurement chart simultaneously.
Procedure
1.
Press the TRACE/DISPLAY hard key.
2.
Press the Select Trace soft key, and then select the trace number: T1 , T2 , T3 , T4 , T5 , or T6 .
The legend shape of the selected trace changes from square to round to indicate that the trace is