JDS Uniphase CellAdvisor JD780A Series, Руководство пользователя

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JD780A Series Analyzers
Using LTE - FDD Signal Analyzer
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f. Enter a value by using the numeric keys. You can also use the rotary knob.
g. Select the unit: GHz , MHz , kHz , or Hz .
–
To set the channel number, complete the following steps:
a. Toggle the Unit soft key and select Channel .
NOTE
Selecting Channel sets the standard channel to Band Global automatically so that you
can set the Channel Number without choosing a standard channel band from the list.
b. Press the Lowest Channel soft key to set the starting channel.
c. Enter a value by using the numeric keys. You can also use the rotary knob.
d. Press the Enter soft key.
e. Press the Highest Channel soft key to set the stopping channel.
f. Enter a value by using the numeric keys. You can also use the rotary knob.
g. Press the Enter soft key.
Measurement example
Figure 87 Multi-ACLR measurement with LTE - FDD 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 211 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.