Keysight N9938-90003 User’s Guide 115
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
— When Center Channel or Freq Span is specified, the X-axis shows the
Center Freq (Channel) and Frequency Span.
— When Start or Stop Channel is specified, the X-axis shows the Start Freq
(Channel) and Stop Freq (Channel).
Change Channel Step Size (Optional)
This setting allows you to use the arrows to increment the channel
number by the specified value. The Channel Step
softkey appears only when it
is valid. Learn how to make it valid in the section, “See How to change the
Channel Number of the measurement”?
—Press Freq/Dist
then More.
—Press Channel Step
— 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 139.
—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:
— Scale Type [current setting]
—Log Logarithmic scale (default setting). The Y-axis reference line
represents the specified absolute acquisition in the current Unit
selection. Y-axis graticules show dB below or above the reference
line.
To Next Page
Loading...
Need help?
General
