Operation
Typical testing session
Pretest review
1. Turn the instrument on.
2. Check that the earphones are operating properly.
3. Seat the subject comfortably in the test area.
4. Explain the test procedure.
5. Place the earphones on the subject.
6. Select the desired tone type.
Familiarization
1. Select the transducers.
2. Select the L or R pushbutton to route the test tone to the selected ear.
3. Demonstrate the 1000 Hz tone at a 50 dB level. The tone duration should be
between 1 and 2 seconds.
4. Repeat at 40 dB HL.
1718-0100 Rev. E 2-8