Keysight N9915-90020 User’s Guide 407
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 Use Data Logging (OTA Options 370, 372, 377, and 378)
How to Use Data Logging (OTA Options 370, 372, 377, and 378)
Data Logging allows you to record OTA trace data and play them back at a
later time. Use this feature to monitor table data activity over a period of time.
Data logs can be saved to the FieldFox Internal memory, an SD Card, or a USB
flash drive.
This section assumes you have already completed the initial setup and have
either an LTE FDD, LTE TDD cell, or 5G TF setup displayed on the FieldFox.
Screen Annotation
During a record or playback session, the following is displayed in the
top-center area of the screen:
—
Rec: 55/55 2018-12-31 03:26:11 PM
where:
—
55/55 is the current and total trace number: currently trace is 55 of 55 total
scans.
— 2018-12-3103:26:11 PM is the date and time of recording.
— The name of a recording can be changed using Manage Sessions. Learn
more in “To change Data Logging Configuration settings:” on page 409.
See also
Chapter 31, “System Settings.”
Spectrum and Strip Chart information is not recorded. Only the Table data
is saved. See
“How to Record a Data Log Procedure” on page 408.
While the Record/Play softkey is displayed in all measurements,
Record/Play only logs and plays back Table and Bar Chart data. 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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