Keysight Technologies C Series - Page 373

Keysight N9915-90020 User’s Guide 373
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 FreqError Th > 5 kHz (enables data with larger
frequency error to be displayed)
or Extend Freq Lock > ON (disables FreqError Th softkey
and displays all available cell results. (This may result in
longer scan times, because display does not update until
all potential cells and their frequency offsets are detected
between signal and the OTA center frequency.)
— LTE TDD (Only): UL-DL Config (selects the type of
Uplink-Downlink switch-point periodicity configuration).
Choose from Config 0 (default) through Config 6.
—
MBSFN (opens a menu to configure the Multi–broadcast
Single Frequency Network (MBSFN) frames to transmit 5G
NR control channels (SSBs) and can be used to enable
dynamic spectrum sharing (DSS)).
——MBSFN OFF ON – Enables the MBSFN frames for
NR control channels (SSBs). (Default = OFF.)
——Toggle All Subframes – Enables or disables all of
the MBSFN frames. Enabled by default when
MBSFN is set to ON.
——
Subframe 3 OFF ON – Enables or disables
subframe 3 as one of the MBSFN frames for NR
control channels (SSBs).
Subframe 4 OFF ON,
Subframe 7 OFF ON, Subframe 8 OFF ON, and
Subframe 9 OFF ON are similar to Subframe 3.
——
More – Opens a menu to enable/disable the
Subframe 8 and Subframe 9 MBSFN frames that
are NR control channels.
—5G TF: Then
SyncCorr Th > 0% (enables data with greater than 0%
of the specified Sync Correlation percentage to be displayed)
—5G NR:
— Then FreqError Th > 7.5 kHz (enables data with larger
frequency error to be displayed)
— Then SCS Sets the data channel sub-carrier spacing:
15 kHz, 30 kHz, 120 kHz, or 240 kHz (Default = 30 kHz).
The SCS is coupled to the Center Frequency setting based
on the 5G NR FR1 & FR2 frequency ranges.
— Then SSB Case Sets the signal SSB case: A, B, C, D, or E
(Default = Auto).