Real-Ear Measurements
139
To perform the coupler measurement:
1. Insert the 50 ohm insert earphone into the jack on the back of the 7000 test
system labeled “EARPHONE.”
2. Plug the other end of the insert earphone into the tubing of the ear level
adapter attached to an HA-2 coupler. See Figure 6.3.5A.
3. Insert a probe tube through the black probe microphone adapter as shown
in Figure 6.3.5B. Attach a dab of Fun-tak to the adapter to keep the probe
tube from slipping.
4. Attach the probe tube to the probe microphone.
5. Insert the adapter into the HA-2 coupler.
6. Press [MENU] from the Opening screen to open the Setup menu.
7. Press [F4] to perform the coupler measurement. This also saves the coupler
measurement in permanent memory.
8. Press [EXIT] to return to the Opening screen.
Figure 6.3.5A
Figure 6.3.5B
Insert earphone attached to coupler
Probe tube in probe mic adapter
To perform the real-ear measurement:
1. Insert the 50 ohm insert earphone into the jack on the back of the 7000 test
system labeled “EARPHONE.”
2. Insert the probe microphone into the client’s ear, as described in Section
6.2.3. See Figure 6.3.5C.
3. Insert the foam eartip connected to the insert earphone into the client’s
ear, or attach the earphone directly to the client’s earmold, and insert the
earmold into the client’s ear. See Figure 6.3.5D.
4. Press [F2] from the Opening screen to enter the Real-Ear Navigation screen.
Summary of Contents for FONIX 7000
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Page 189: ...Calibration 181 Figre B 2 Calibrating the insert earphone ...
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