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System SettingsFUTURE
Utilities
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,
The OML frequency extenders have approximately 4 to 10 dB of gain
depending on the mixer and frequency.
— High Sensitivity ON OFF selection: able to choose between showing largest
Frequency Extender Procedure:
General Comment on Frequency Converter Usage:
OML heads are limited to 6 GHz span.
Example:
If you are using a 24–40 GHz OML head you can sweep:
— 24–30 GHz and 25–31 GHz, but not:
— 24–31 GHz
But, in OTA mode, because each frequency is set separately, you can set CC0
to 24 GHz and CC1 to 31 GHz.
But, you cannot set CC0 to 4 GHz and CC1 to 32 GHz. You have to stay within
the band of the OML mixer (24-40 in this example), if you are enabling an
external head.
1. Press System 7 >
774
RTSA, and 89600 VSA (via the Remote Server feature—with VSA license).
— The USB ports are used to supply power to the head
— Port 1 is used to supply an LO signal to the head. The LO signal is
automatically generated, using the internal source. Therefore the
application disables normal Port 1 access to the internal source. But,
automatic alignments of the SA Receiver still remain active using an
internal path for the source.
— Port 2 is where the head delivers the downconverted signal to the SA
receiver.
span (wide) available (6 GHz) or best noise floor (narrow).
Utilities
Freq Extnd
Select Freq Extnd Head
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Keysight N9915-90020 User's Guide
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