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Keysight Technologies C Series - Page 680

Keysight Technologies C Series
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678 Keysight N9915-90020 User’s Guide
Noise Figure Mode (Option 356)
Using Noise Figure
Figure 29-8 Smart Noise Source Annotations
Top Figure:
1. Automatically loaded T
Cold value from the USB
Noise Source, measured in
Kelvin.
2. “Smart (Auto)” under ENR
Mode notation.
– The device model will say
“(None)” if there is no USB
Noise Source connected.
3. Noise Source Control menu
allows user to manage the
USB Noise Source.
2nd Figure:
1. General warning message
annotation notifying that
“NO_USB _DEVICE_FOUND”
no USB Noise Source is
connected.
2. When in Smart (Auto)
mode, if there is no connected
device then ENR model is
“None”.
3rd Figure:
1. User set Auto load ENR to
OFF. Information to user that
the latest ENR data was not
automatically loaded into the
ENR Table.

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