GSi TYMPSTAR 1, Service Manual

Page: 103 / 224

Calibration
Adjusting Cal HL and The Cal HL level shown on the CONTRA SPL CAL and IPSI SPL CAL screens
Target SPL levels can be adjusted in 5.0dB increments to accommodate background noise levels in
the calibration environment. As the Cal HL level is adjusted up or down, the TARG
SPL level automatically tracks to eliminate the need for separate transducer target
SPL adjustments.
80 dB HL changed to 90 dB HL
The TARG SPL level shown on the CONTRA SPL CAL and IPSI SPL CAL
screens can only be adjusted when a custom transducer has been specified by set-
ting switch #2 of the calibration options DIP switch to the ON position. The appro-
priate target SPL can be incremented up or down in 0.5dB increments for each
probe tone frequency.
NOTE
Target SPL values must be within 10dB of the GSI default values.
GSI TympStar Version 1 and Version 2 Service Manual 4 - 31