Calibration 203
RECD coupler measurement
1. Set up your insert earphone for calibration as described above.
2. Select “Cal Left (Single) Ins. Earphone (RECD)” with [∧, ∨].
3. Press [START/STOP] twice to perform the calibration.
4. If you are using only one insert earphone for the RECD measurements, skip
to step 8. If you are using two insert earphones (one per ear), proceed to the
next step.
5. Set up the right insert earphone as described above.
6. Use [∨] to select “Cal Right Ins. Earphone (RECD).”
7. Press [START/STOP] twice to perform the measurement.
8. Press [F5] to save the insert earphone calibration.
9. Press [EXIT] to exit Earphone Calibration Screen.
Audiometer calibration setup
1. Attach the earphone calibration adapter to the HA-2 coupler
2. Insert the insert earphone into the “earphone” jack on the back of your ana-
lyzer.
3. Plug the other end of the insert earphone into the earphone calibration
adapter. See Figure C-4.
4. Insert coupler microphone into the HA-2 coupler. See Figure C-5.
5. From the Opening Screen, press [MENU] to enter Default Settings Menu.
6. Press [F3] to enter the Calibration Screen.
7. Press [F4] to enter the Earphone Calibration Screen.
Figure C-4—Insert earphone connected to Figure C-5—Coupler microphone inserted into
earphone calibration adapter and coupler HA-2 coupler
