8163A/B, 8164A/B, 8166A/B User’s Guide 393
Error Messages 14
25016 +5V attenuator encoder voltage on TCFS board not in limits
25017 +2.5V attenuator encoder voltage on TCFS board not in limits
action Please return the unit to your local service center for repair
error message TCFS Temperature Selftest Failed (error value)
description Verifies whether the TCFS temperature sensors are working correctly
error value 25021 TCFS board temperature sensor U620 above limit
25022 TCFS case temperature sensor possibly not connected
action Please return the unit to your local service center for repair
error message TCFS Amp. Offset Selftest Failed (error value)
description Checks whether an applied offset for channel A, B and M is measured within limits
error value 25031 TCFS Chan A offset not in limits
25032 TCFS Chan B offset not in limits
25034 TCFS Chan M offset not in limits
action Please return the unit to your local service center for repair
error message TCFS Amplifier Selftest Failed (error value)
description This test calibrates the TCFS A, B and M channel and verifies if all resulting values are in limits
error value 25041 TCFS Hybrid amplifier offset could not be removed
25042 One of the channels A, B or M failed during calibration
action Please return the unit to your local service center for repair
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