368                                                                                                                     Keysight N9927-90001 User’s Guide
USB Antennas – (Full Capability Requires EMF Option 358, and SA mode (Option 233 
Mixed Analyzers))
Using USB Antennas
Using USB Antennas 
USB antennas enables you to do the following:
Triaxial USB antennas can be used without EMF Option 358, but with 
limited capability and doing so is not recommended by Keysight.
Measures  electro-magnetic fields (EMF) for radio frequencies in proximity of radio and television 
stations, and repeaters for cell phones
a
a. Requires Option 358 for EMF measurements. Else, antenna can be used manually with 
X/Y/Z axis.
 Seven Independent Antenna/Cable Amplitude Correction Types: 
— Triaxial antenna (X/Y/Z)
— Cable – triaxial connection
— Cable – Receiver Side
— Antenna – Receiver side 
— Cable – Source Side 
— Antenna – Source Side
— Antenna – (Triaxial off)
—Source and 
— Receiver sides
Color Coded Display Types:
— Specify high and low power with 
color bars 
Features:
— Automatic detection of previously imported 
USB antenna corrections (i.e., to view pre 
Apply Corrections)
— OTA (5G NR) mode can connect to the USB 
antenna, when an Option 358 license is 
detected
— Automatic selection of field strength units, 
when USB antenna corrections are applied
— Auto selection provides ability to cycle 
through each axis (X, Y, and Z) to provide 
RMS average of the three axes results in 
trace and channel power
Record GPS stamped data measurements
— Define measurement interval by time 
or distance
—Show results in Table or Bar Chart 
(Channel Power)
— Display files (KML) on Google Maps 
or Google Earth