JDS Uniphase CellAdvisor JD780A Series, User Manual

Page: 427 / 592

JD780A Series Analyzers
Using TD-SCDMA Signal Analyzer
427
Measurement example
Figure 210 Multi-ACLR measurement with TD-SCDMA 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 RF tests” on page 428 for more
information.
Spurious emissions
Out-of-band emissions are unwanted emissions immediately outside the channel bandwidth resulting
from the modulation process and non-linearity in the transmitter but excluding spurious emissions. The
Spurious Emissions measurement is to identify and determine the power level of out-of-band spurious
emission within the necessary channel bandwidth and modulated signal measured at the RF port of
the Base Station.
Setting measure setup
After configuring test parameters as described in the
“Configuring test parameters” on page 415, you
can continue your measurement.
Procedure
1.
Press the MEASURE SETUP hot key.
2.
To set up the range table and parameters, press the Range Table soft key and then complete
the following steps:
a. Press the Range soft key, and then select the range number between 1 and 20 to add
as a new or change the existing settings.
b. Do the following as desired:
–
Select Start Frequency , and then specify the start frequency for the selected range.
–
Select Stop Frequency , and then specify the stop frequency for the selected range.
–
Select Start Limit , and then specify the lower limit for Pass/Fail indication.
–
Select Stop Limit , and then specify the upper limit for Pass/Fail indication.