Simply place the earphones over right and left couplers of OTO-CHEK.
For MANUAL TESTING turn OTO-CHEK on. Present the tones as in manual testing and record the frequency and HL when there is positive RESPONSE by OTO-CHEK, red light on. Retain these baseline results and use them to compare future tests. ESTABLISH NEW BASELINE every time the audiometer is re-calibrated.
For AUTOMATIC TESTING place the earphones on OTO-CHEK, plug the response switch from OTO-CHEK to response jack on audiometer. Turn OTO-CHEK on. Turn automatic audiometer on and initiate automatic test.
If printer is connected to the audiometer, results will be printed. Retain these baseline results and use them to compare future tests. ESTABLISH NEW BASELINE every time the audiometer is re-calibrated.
Test Frequencies:
Full range 125 to 8K Hz.
Stimulus Format:
Continuous or pulsed
Power Source:
AC Adapter (output 14V DC 220mA) or 9 Volt battery.
Weight:
Less than 2 pounds
Response Output:
Normally open relay contacts.
