Keysight Technologies X Series Service Manual page 130

Instrument Messages
Condition Errors 301 to 399, Uncalibrated Integrity
309
User Cal; Cal invalidated
309
User Cal; Cal will be
interpolated
309
User Cal; Freq outside cal
range
311
Calibration
130
E 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.
W The measurement frequency range has been
changed such that it is a subset of the calibrated
range. (~CAL)
E The existing user cal has been invalidated because
the current measurement frequencies lie partially
or wholly outside the range of frequencies used for
user-cal. (UNCAL)
W
Keysight N9010A EXA Service Guide