User Cal; Cal Invalidated - Keysight X-Series Manual

Instrument Messages
Condition Messages
Err# Status Message
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Bit
309 4

User Cal; Cal invalidated

Instrument Messages
Error or Verbose/Correction Information
Warning
E,W The existing user cal has been invalidated
because of one of the following reasons:
Frequency: Setting the frequency outside
the current valid user cal set (for example: If
the current sweep range is 2 to 3GHz, then
setting the start frequency to 1.9 GHz will
invalidate the current user cal. Other
frequency changes that will invalidate the
user cal are:
— If the cal was performed at a fixed
frequency and you change this
frequency.
— If you are in "Freq List" mode and
you change it to extend beyond
the current user cal range. In this
case you will see an error
message.
DUT Type: If the DUT Type parameter
changes, causing the measurement
frequencies to be pushed outside the
current cal.
Attenuation: If an attenuation setting is
selected but has not been calibrated.
Preamp: If set to condition different from
current cal settings, for example: if
calibrated with the preamp on, turning it off
will invalidate the cal.
Points: Changing the number of measured
frequency points can make the stored
preselector offsets become inaccurate and
hence invalidate the calibration. This occurs
when the following conditions exist:
— A successful calibration has been
performed.
— Some measured freq points are >
3.6 GHz.
— The new points > 3.6 GHz are
located more than 50 MHz away
from the current calibration
points.
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