Agilent Technologies Signal Analyzer N9030a - Manual (Page 1143)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
SPAN X Scale
If Source Mode is set to Tracking, and the Span is therefore limited by the limits of the source, a
warning message is generated, “Data out of range;clipped to source max/min” if these limits are
exceeded. Note that for an external source, these limits can be affected by the settings of
Source Numerator, Source Denominator and Power Sweep.
In analyzers with an RF Preselector, such as MXE, you cannot sweep across the band break at
3.6 GHz while the RF Preselector is on in Continuous sweep, as there is a mechanical switch
which bypasses the RF Preselector above 3.6 GHz. See the Stop Frequency key description for
details of this limitation.
Couplings Span affects RBW, sweeptime, FFT & Sweep choice (including FFT Width, Phase Noise
Optimization and ADC Dither auto couplings.)
When operating in “swept span”:
•
Any value of the Center Frequency or Span that is within the frequency range of the analyzer
is allowed when the value is being set through the front panel numeric key pad or the SCPI
command. The other parameter is forced to a different value if needed, to keep the Start and
the Stop Frequencies within the analyzer’s frequency range
•
When using the knob or the step up/down keys or the UP |DOWN keywords in SCPI, the
value that is being changed i.e. the Center Frequency or Span, is limited so that the other
parameter is not forced to a new value
•
The Span cannot be set to Zero by setting Start Frequency = Stop Frequency. The value of the
last setting will be changed to maintain a minimum value of 10 Hz for the difference between
start and stop frequencies.
Preset Depends on instrument maximum frequency, mode, measurement, and selected input.
See SpanPresets
State Saved Saved in instrument state
Min 10 Hz unless entered directly, then 0 Hz is allowed, but nothing between 0 and 10 is ever allowed.
In the Swept SA measurement, in Trace Zoom, Zero Span is not allowed, so the Span may not go
below 10 Hz.
In the Swept SA measurement, in Zone Span, Zero Span is not allowed in the top window, so the
Span may not go below 10 Hz in the top window.
Max Depends on instrument maximum frequency, mode, measurement, and selected input. See
SpanPresets
If the knob or step keys are being used, depends on the value of the other three interdependent
parameters Center Frequency, Start Frequency, Stop Frequency
Note that, if the Source Mode is set to Tracking, the effective instrument maximum Span may be
limited by the source maximum frequency.
Default Unit Hz
Status Bits/OPC
dependencies Overlapped if Signal Track is on (OPC shouldn’t return or clear until the zooming has completed
for the new span)
Initial S/W Revision Prior to A.02.00
Remote Language Compatibility Measurement Application Reference 1143