Chapter 8
Using LTE-FDD Signal Analyzer
JD700B Series User’s Guide
257
Measurement example
Figure 141 LAA (Licensed Assited Acess) measurement with LTE-FDD signal analyzer
◼
LAA is a radio access technology which provides LTE service on the 2.4 or 5 GHz band.
◼
LTE-LAA
consists of an anchor or a primary carrier on the licensed band and the secondary carrier
on the Wi-Fi band. The CC1 in the measurement screen shows the anchor carrier, and CC2 and
CC3 show LAA carriers on Wi-Fi band.
◼
LTE channel bandwidth on 5 GHz and on 2.4 GHz unlicensed spectrum is 20 MHz, and 10 MHz or
20 MHz respectively.
Setting display
You can use the
TRACE/DISPLAY
hard key to select modulation analysis or spectrum analysis.
Procedure
1
Press the
TRACE/DISPLAY
hard key.
2
Toggle the
Display
soft key and select
MA
for modulation analysis,
SA
for spectrum analysis or
Dual Sp
for dual spectrogram analysis.
The screen changes according to the selected option.
3
If
SA
is selected, complete the following steps:
Press the
CC#
soft key, and then select between
CC1
and
CC2
.
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 the active one now.
Do one of the following:
To
Select
Trace Legend
Clear current data and display with new
measurements
Clear Write
W
Display the input signal’s maximum response only
(unlimited or for a certain amount of time)
Max Hold
M