© 2019 Thorlabs GmbH51
PAX1000
7.2 Troubleshooting
Common Error Messages
ADC underrun during last measurement.
The incident optical power was too low.
ð The PAX1000 is set to a fixed gain.
ð Set the instrument to Auto Power Range or select an appropriate power range man-
ually.
ADC overflow during last measurement.
The incident optical power was too high.
ð The PAX1000 is set to a fixed gain.
ð Set the instrument to Auto Power Range or select an appropriate power range man-
ually.
TIA gain switching is in progress.
ð This is a status message during the automatic adjustment of power range.
ð No action required.
An one-time TIA auto ranging is in progress.
ð This is a status message during the automatic adjustment of power range.
ð No action required.
An out-of-sync condition occurred during the last measurement.
ð If this message appears, the measurement results are not reliable. The PAX1000
should resolve this error automatically.
ð If the error message persists, please contact Thorlabs.
Motor speed too low (too high).
ð This is a status message when the measurement speed was changed.
ð If this message appears frequently or permanently, please contact Thorlabs.
PAX operating temperature is below (above) limit.
ð This error message may appear in the case of too low (too high) environmental temper-
ature.
ð If this message appears at normal operating temperature, please contact Thorlabs.
USB power supply voltage is too low.
ð The PAX1000 requires a higher operating current than the standard USB2.0 port can
deliver, e.g. at hing measurement speed.
ð Connect the external power supply.
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