Adjusting The Frequency Settings; Adjusting The Scale And Amplitude Settings - Keysight Technologies FieldFox B Series User Manual

IQ Analyzer (IQA) – Option 351
I/Q Analyzer (IQA) Mode Settings
Spectrum and RF Envelope have six markers that can be applied to any of
the 4 traces.
Waveform's six markers can be applied to RF Envelope, Real, Imaginary,
Phase, Unwrapped Phase, and Q vs. I.

Adjusting the Frequency Settings

— Press Freq/Dist.
— Then select from the following:
When in full span, ADC dither raises the noise floor at the edges of the
120 MHz.

Adjusting the Scale and Amplitude Settings

Enables you to change attenuation settings. When RF Attenuation Auto is ON,
the RF Attenuation is set by adjusting the acquisition. As the acquisition is
lowered, for example from -10 dBm to -40 dBm, the FieldFox assumes that you
Keysight N9938-90006 User's Guide
— Trace 1 2 3 4 Pressing the Trace key enables you to select a different
trace number. This softkey is active when Data is set to Spectrum or
RF Envelope.
RF Envelope has four traces.
—
Real, Imaginary, Phase, Unwrapped Phase, and Q vs. I have 1 trace
—
each.
— Trace State Sets a different trace state to each of four traces. This
softkey is active when the data is set to Spectrum or RF Envelope
(Log). Pressing the Trace State softkey enables you to change the
State of the selected Trace number of the Trace Data (default: Clr/Wr
– assigned to trace 1. Traces 2, 3, and 4 are set to Blank).
— Center Sets the center frequency of the measurement trace (default:
1 GHz, minimum: 0 Hz, maximum: FieldFox model dependent).
— Freq Span (Spectrum Only) Sets the frequency span of the
measurement trace. The analyzer's digital IF bandwidth is always
equal to this value.
Changing the span causes the IF bandwidth and the sample rate to
change automatically:
Span = IF bandwidth, sample rate = 1.25 * IF bandwidth
Res BW = Span /50, if resolution bandwidth = Auto.
Default: 100 MHz, minimum: 10 Hz, maximum: 120 MHz
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