376 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 Advanced Opens an Advanced softkey menu.
——Then Phase Comp- Enables/disables phase
compensation.
— Once the table populates, enter the desired frequency error (LTE
FDD, LTE TDD, and 5G NR), Sync Correlation (5G TF) threshold for
your measurement (LTE FDD and LTE TDD: Default = 900 Hz, i.e., if a
carrier signal’s error is greater than 900 Hz, no data is displayed. 5G
TF/5G NR/5G NR EVM Conducted: Default = 1%, i.e., if a carrier
signal’s sync correlation is smaller than 1%, no data is displayed).
12. Enable the Data Logging settings:
— Press Trace 6
> More (All Modes) > More (5G NR only) then Data
Logging to view the Data Logging softkeys and set the Record
Settings, Record Save/Recall, and Indoor Map Data Logging
— Record (Outdoor Logging) or
—
Play (If you have previously stored data recordings.)
a. To set the Record Settings (Outdoor Mapping only) — then choose:
— Then Meas Interval > ON
— Then
Interval Type > choose Time or Distance.
— Then, if applicable
Time Interval enter time interval in
seconds.
Or
— Then, if applicable
Distance Interval enter distance interval in
miters.
If after making the setting changes in this section, no data is displayed,
refer to
“Troubleshooting” on page 416.
Display does not update (refresh), until all active component carriers (CCs)
have been scanned.
Spectrum and Strip Chart information is not recorded. Only the Table and
Bar Chart data are saved. See
“How to Record a Data Log Procedure” on
page 408
.
Data Log-Play files are saved to:
— If File Folder is set to Default then Data Log-Play files are
save-recalled to: "[CurrentDevice]\RecordPlayback\OTA"
— If File Folders are set to System, then Data Log-Play files are
save-recalled to: "CurrentDevice\<UserSelectedFolder>\
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