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Noise Figure Mode (Option 356)
Using Noise Figure
Figure 28-3
Display Annotation—Overview
Keysight N9938-90006 User's Guide
1. Variable Voltage Source
(VVS) Status (appears when
VVS is on. Refer to
"Variable
Voltage Source (Opt. 309)" on
page
762.
2. Calibration Status
3. Excess Noise Ratio (ENR)
Status
4. Frequency Context
5. DUT Type
6. Excess Noise Ratio (ENR)
Mode
7. Sweep point caret (shows
last point measured)
1. Variable Voltage Source (VVS)
Status line (appears when the
VVS status line is turned on in the
system menu). Refer to
"Variable
Voltage Source (Opt. 309)" on
page
762.
2. Uncertainty status annotation
(displayed when the uncertainty
bars are enabled)
3. Questionable Amplitude
annotation (displayed when the
Amplitude Alignment is stale)
4. External Reference annotation
(displayed when external
reference is selected)
5. Warning message annotation.
Used to display the following
warnings:
–Invalid frequency settings
–VVS trip
–ADC Over Range
–Ext Ref unlock
653
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