Welch Allyn MicroTymp 3 Handle Service Manual page 22

18 Testing and verification
5. Remove the 2cc coupler from the ATE Microphone. Rotate the lock ring on the 2cc
coupler counterclockwise to unlock the mechanism.
6. Place the ATE Microphone onto the calibration sound box.
7. Press the On/Off button
it on.
8. Select the Calibrate SLM button on the ATE Screen.
Welch Allyn MicroTymp3 Handle and MicroTymp Printer/Charger
located on the side of the calibration sound box to turn