GSi TYMPSTAR 1, Service Manual

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Calibration
TympStar Version 2 Calibration
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/B/G calibration
• Pressure system calibration
Calibration require- Calibration is typically performed as a complete calibration sequence or as a routine
ments calibration sequence.
Complete calibration A complete calibration sequence must be performed if the following occur:
sequence • 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/B/G 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 Cal Mode and verify
that Ipsi and Contra sound pressure levels are within the specified accuracy. At-
tenuator linearity and distortion can also be checked in this mode.
Routine calibration A routine calibration sequence should be performed quarterly or annually and in-
sequence cludes the following:
• Checking the contra, Ipsi and probe tone SPL calibrations and recalibrating
if necessary
• Performing Y/B/G calibration
• Checking the pressure system calibration and recalibrating if necessary
Upon completion of a complete calibration sequence, return to the normal mode
and check compliance calibration at 0daPa. Then re-enter Cal Mode and verify
that Ipsi and Contra sound pressure levels are within the specified accuracy. At-
tenuator linearity and distortion can also be checked in this mode.
GSI TympStar Version 1 and Version 2 Service Manual 4 - 51