Keysight N9938-90003 User’s Guide 223
System Settings
Utilities
How to view and change the Frequency Extender (Freq Extnd) Settings
The following are the only supported modes for the frequency extender feature:
SA (Option 233), mixed analyzers, RTSA (Option 350), IQA (Option 351), OTA
(Option 370/377/378), PAA (Option 360) modes, and VSA (via the Remote
Server feature).
For this section, refer to Figure 9-1 on page 227, Figure 9-2 on page 228,
Figure 9-3 on page 228, Figure 9-4 on page 229, Figure 9-5 on page 229, and
Figure 9-6 on page 230.
These settings are used to set up a frequency extender head (e.g., OML head).
The frequency extender feature can be used in OTA FR2 measurements. See
also, Chapter 12, “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.”
The frequency extender heads are an external down converter that extends the
FieldFox's range. The frequency extender head makes use of the FieldFox's
source and uses USB port for power. The FieldFox support for the frequency
extender head includes:
— The frequency extender heads are compatible with to SA, IQA, OTA, PAA,
RTSA, and 89600 VSA (via the Remote Server feature—with VSA license).
IMPORTANT!
Due to limitations in the OML hardware, the heads have a 6 GHz frequency
span.
Examples
Using a 24 to 40 GHz mixer, you can sweep:
— 24 to 30 GHz and 25 to 31 GHz, but not
—24 to 31 GHz
Assuming the same 24 to 40 GHz mixer, using OTA mode, you can
— Set a CCO to 24 GHz and CC1 to 31 GHz, but not
— CC0 to 4 GHz and CC1 to 32 GHz, because you have to remain within
the mixer’s band
PAA and 89600 VSA (via the Remote Server feature) are compatible with
the frequency converter heads, but cannot apply or edit the frequency
head corrections.
PAA and 89600 VSA (via the Remote Server feature) is compatible with the
frequency converter heads, but cannot apply or edit the frequency head
corrections.
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