R&S ESCI The Screen
1166.6004.12 3.5 E-1
Status information
#SMPL
UNCAL
The status information on the left side of the diagram hint at irregularity
(e.g. UNCAL)
"#SMPL" indicates that the relation Span / RBW is higher than 125 while
the RMS detector is activated. In this case, a stable signal evaluation is
no longer possible due to an insufficient number of A/D converter
samples.
⇒ reduce span or increase RBW
"UNCAL" is indicated under the following circumstances:
• correction data are switched off (menu CAL, CAL CORR OFF).
⇒ switch on CAL CORR ON or PRESET
• no valid correction data. This may occur after a cold start of the
instrument following a firmware update.
⇒ record correction data
• Sweep time too short for current instrument settings (span,
resolution bandwidth, video bandwidth).
⇒ increase sweep time
OVLD / IFOVL
LOUNL /
EXREF
OVEN
OVLD is indicated when the input mixer is overloaded.
⇒ Increase input attenuation
IFOVL is indicated when overload occurs in the IF signal path after the
input mixer.
⇒ Increase reference level
LOUNL is indicated when an error occurs in the frequency processing of
the instrument.
EXREF is indicated when the analyzer is configured for use of an
external reference signal, but no reference signal is detected at the
corresponding input.
OVEN is indicated when the crystal oscillator (option R&S FSP-B4) has
not yet reached its operating temperature. This indication vanishes after
a few minutes after switch on.
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