Keysight Technologies C Series - Page 370

370 Keysight N9915-90020 User’s Guide
Over–the–Air Measurements (OTA) – LTE FDD Option 370, LTE TDD Option 371, 5G TF
Option 377, 5G NR / 5G NR EVM Conducted Option 378
How to Set Up Over–the–Air (OTA) Mode Settings
b. 5G NR Only:
Press
More
— Then SSB Index All Single when the SSB value is set, the SSB
Index mode is automatically set to single. SSB Index values
are for the currently displayed cell results.
Enabling and disabling multi-beam display is useful when
displaying the results from multiple cells.
— Then
Multi-Beam OFF ON enable/disable Multi-Beam.
Enables/disables displaying multiple beams (SSB results) for
the currently displayed cell results.
Enabling and disabling multi-beam display is useful when
displaying the results from multiple cells.
— Then
Next Result Set
updates the Scan Results table with the
next set of scanned data
c. 5G NR EVM Only (When Display Type is set to Constellation or
Frame Summary):
Press
More
— Then Demod Data All choose the demodulation data type:
PSS, SSS, PBCH, PBCH DMRS, or All (default == All).
— Then Data Logging – to record data. Refer to “How to Use
Data Logging (OTA Options 370, 372, 377, and 378)” on
page 407.
9. Optional:
Display Type Table – Different softkey menus are displayed for
up to six different Display Types: Table (default), Bar Chart, Spectrum, and
Strip Chart, Constellation and Frame Summary (i.e., Constellation and
Frame Summary are on available when measurement is set to 5G NR
EVM):
a. Optional (When Display Type == Table or the More softkey is
pressed for the other Display Types): Modify RF attenuator, Preamp,
and other settings:
If Display Type = Table, then press
Scale/Amptd or
If Display Type = Bar Chart, Spectrum, or Strip Chart, then press
Scale/Amptd
> More
Then choose from the following:
— Press
RF Atten to set the attenuator power (default: –10 dB).
Set to 0 dB.
— Press Preamp change to ON.
— Press
Range to set the absolute power (dBm)