SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
— Enter a step value using the numeric keypad, the arrows, or the rotary
knob. Then press Enter
.
Reverse Swap
Available ONLY with Opt. 209 and while in Step sweep mode. Each press of the
softkey causes the Start and Stop frequencies to swap. The Start becomes the
Stop and vice versa. Learn more about Step versus FFT sweeps in “FFT Gating
(Opt 238)” on page 192.
—Press Freq/Dist
then More.
—Then Reverse Swap
Scale and Units
Adjust the Y-axis scale to see the relevant portions of the data trace.
The Y-axis is divided into 10 graticules. A acquisition is shown on the screen as
a solid horizontal bar that can be placed at any graticule.
When RF Attenuation set to Auto, the RF Attenuation is coupled to acquisition.
How to set Scale
Press Scale / Amptd. Then choose from the following:
— Autoscale
Automatically adjusts the Y-axis to comfortably fit the Minimum
and Maximum amplitude of the trace on the screen.
— Scale
Manually adjust the scale per division to view specific areas of the
current trace. Enter a value using the numeric keypad, the arrows, or
the rotary knob. Then press Enter
.
— Ref Level
Manually set the value of the reference line. Enter a negative
value by pressing Run/Hold (+/-)
either before or after typing a value. This
can also change the RF Attenuation setting. See “Attenuation Control” on
page 156.
— Preamp
Refer to “Preamplifier Control (Opt 235)” on page 157.
— RF Atten
Refer to “Attenuation Control” on page 156.
— More
opens another set of scale softkeys.
Manually set Scale Type, acquisition, and Reference Position.
— Scale Type [current setting]
Keysight N9938-90003 User's Guide
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