This section contains the following:
• Calibration requirements
• Complete calibration sequence
• Routine calibration sequence
• Calibration procedures
• Loading default data and Self-Cal
• Contra, Ipsi and probe tone calibration
• Y calibration
• Pressure system calibration
Calibration is typically performed as a complete calibration sequence or as a routine
calibration sequence.
A complete calibration sequence must be performed if the following:
• A performance problem is suspected
• A repair has been made to the TympStar involving the digital board,
analog board, PC104 board, probe box or transducers
The complete calibration sequence must include the following:
• Loading default data and performing Self-Cal
• Contra, Ipsi and probe tone SPL calibrations
• Y calibration
• Pressure system calibration
Upon completion of a complete calibration sequence, return to the normal mode
and check compliance calibration at 0 daPa
. Then re-enter the Cal Mode and
verify that Ipsi and Contra sound pressure levels are within the specified accuracy.
Attenuator linearity and distortion can also be checked in this mode.
A routine calibration sequence should be performed quarterly or annually and in-
Cludes the following:
• Checking the Contra, Ipsi and probe tone SPL calibration and recalibrating
if necessary
• PerformingYcalibration
• Checking the pressure system calibration and recalibrating if necessary
Upon completion of a routine calibration sequence, return to the normal mode and
check compliance calibration at 0daPa. Then re-enter the Cal Mode and verify that
Ipsi and Contra sound pressure levels are within the specified accuracy. Attenuator
linearity and distortion can also be checked in this mode.
GSI TympStar Version 1 and Version 2 Service Manual 4 - 33
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