Chapter 9
Using LTE-TDD Signal Analyzer
290
JD700B Series User’s Guide
difference between the traces, press the
T1 – T2 -> T5
or
T2 – T1 -> T6
soft key.
The result is overlaid on the screen along with the second Y-axis.
Conducting RF measurements
Channel power
The Channel Power measurement is a common test used in the wireless industry to measure the total
transmitted power of a radio within a defined frequency channel. It acquires a number of points representing
the input signal in the time domain, transforms this information into the frequency domain using Fast Fourier
Transform (FFT), and then calculates the channel power. The effective resolution bandwidth of the frequency
domain trace is proportional to the number of points acquired for the FFT.
The channel power measurement identifies the total RF power and power spectral density (PSD) of the
signal in the LTE channel bandwidth.
Setting measure setup
After configuring test parameters as described in the “Configuring test parameters” on page 283, you can
continue your measurement.
Procedure
1
Press the
MEASURE SETUP
hot key.
2
To set the nominal channel bandwidth to be measured, complete the following steps:
Press the
Bandwidth
soft key.
Select the bandwidth option from the choices:
1.4 MHz
,
3 MHz
,
5 MHz
,
10 MHz
,
15 MHz
,
and
20 MHz
.
3
To select the subframe number to be measured, complete the following steps:
Press the
Subframe No
soft key.
Enter a value by using the numeric keys. You can also use the rotary knob.
Press the
Enter
soft key.
4
Toggle the
Physical Cell ID
soft key and select
Auto
or
Manual
as desired:
Auto:
Lets the instrument detect the Physical Cell ID for the LTE signal automatically.
Manual:
Sets a specific Physical Cell ID for the LTE signal manually in order to speed up
the synchronization with a BTS.
Содержание CellAdvisor JD700B Series
Страница 2: ...CellAdvisorTM JD700B Series FW3 120 User s Guide ...
Страница 105: ...Chapter 4 Using Spectrum Analyzer 104 JD700B Series User s Guide Figure 44 PIM detection for multiple carriers ...
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Страница 734: ...Chapter 18 Perfroming BBU Emulation JD700B Series User s Guide 733 Figure 441 Example of verification of link status ...
Страница 763: ...Chapter 21 Performing Fiber Inspection 762 JD700B Series User s Guide Figure 461 Fiber inspection report ...
Страница 808: ...Appendix JD700B Series User s Guide 807 JD740B series ...
Страница 811: ...Appendix 810 JD700B Series User s Guide Figure 470 Append keywords window ...