Keysight Technologies C Series - How to Set Up Over-the-Air (OTA) Mode Settings; OTA Setup Procedure

Keysight N9915-90020 User’s Guide 365
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
How to Set Up Over–the–Air (OTA) Mode Settings
This section reviews the steps in setting up an OTA measurement. If you are not
familiar with this process or would like more information, refer to
“How to
Define a Cell or Cell(s) and Use OTA”
This section consists of:
— “OTA Setup Procedure”
— “Optional: Using RTSA to verify the signal quality (Requires Option 350
and Preamp Option 235)”
OTA Setup Procedure
1. Modifying the Frequency Reference and GPS settings:
Press System
— Then System Configuration) > GNSS (GPS+) > GNSS Receiver >
Internal > Esc
— The left portion of the screen displays satellites and the
corresponding number on the adjacent Satellite Power
chart.
— The right portion of the screen displays Satellite Power
Carrier to Noise (C/No) dBHz values on the tops of the
satellite power chart.
— Then System
> System Configuration > Frequency Ref > Freq Ref
Source [GPS] >Back
For more information:
— Refer to Figure 13-18 called, “Example of the LTE FDD Scan Results
Table (Five CCs and one cell) – LTE TDD is similar,” on page 379
.
— And, refer to
Figure 13-19 called, “Example of the 5G TF Scan
Results Table (Two cc and one cell),” on page 380.
IMPORTANT! See also,
“Alignments” on page 206, in NA mode,Chapter 9,
“SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE.”
.
The FieldFox can be used with an OML frequency extender. Refer to
“Utilities” on page 772, the Configuration Guide at:
https://www.keysight.com/us/en/assets/7018-06515/configuration-guid
es/5992-3701.pdf (5992-3701EN), and to “Contacting Keysight” on
page 5
.
IMPORTANT! It is not sufficient to be locked to the GNSS satellite, the
frequency reference must be locked to GPS.