Keysight Technologies C Series - Page 386

386 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
then use Sync Raster, to open a softkey menu:
Then
Sync ARFCN, Sync GSCN, Center, or Offset
For 5G TF and 5G NR EVM Conducted (instrument dependent). For
more on 5G NR EVM Conducted, refer to “FieldFox EVM
Measurements” on page 364.
4. Select Trace 6
—choose:
— Window 1 2 3 4
— Then
Win State OFF ON to ON
— Then
Display Type
— Table or
—
Bar Chart or
—
Spectrum or
—
Strip Chart
— Then CC (select component carriers)
— All (Not applicable for Spectrum. When All is specified, for
Spectrum, the FieldFox defaults to CC0) or
— CC0, CC1, CC2, CC3, or CC4 (i.e., 5G TF and 5G NR has up
to seven component carrier choices).
— Then
PCI All (select PCIs)
— All (Not applicable for Spectrum. When All is specified, for
Spectrum, PCI is set to single). For all other display types,
the results for any cells with any PCI are displayed (default
= All).
—
Single displays the results for the selected PCI.
The Spectrum view in 5G TF uses a center frequency that is +2.6 MHz
offset from the carrier’s center frequency. This is done so that FieldFox can
capture the necessary xPBCH (physical broadcast channel) information to
demodulate the signal. Be aware that all of the instrument’s displayed
numbers are rounded to three significant digits (e.g., 5.0026 GHz is
displayed as 5.003 GHz).