Using the FONIX 7000 to Verify Coupler and Real-Ear Performance ...

Real Ear Measurements 29
2.1 Measuring the real-ear unaided gain (REUG) of the open ear canal.
STEP-BY-STEP
1. Prior to setting up the patient for real ear measurements, it is important to enter
the audiogram with the appropriate menu settings. From the Opening screen,
press [F2] to enter the Real Ear Navigation screen.
2. Press [F1] in the Real Ear Navigation screen to enter the audiogram entry
screen.
Figure 35 – Real ear navigation screen function keys
3. Press [MENU] to open the real ear audiogram menu and select the appropriate
settings based on the patient’s audiogram and the hearing aid parameters.
These settings are important for the generation of real ear targets.
NOTE: Use the UP/DOWN arrows to select a menu option and press the RIGHT arrow to change
a selection. Press [EXIT] to return to the audiogram entry screen.
REAL EAR AUDIOGRAM MENU - TARGET OPTIONS:
Aud. Transducer: OFF, SF (Soundfield), TDH, ER3
Fitting Rule: NAL-NL1, POGO, BERGER, 1/3 Gain, ½ Gain, 2/3 Gain,
Direct, NAL-RP
Age: Adult, 0-2mos, 3-6mos, 7-12mos, 1-2yrs, 2-3yrs, 3-4yrs, 4-5yrs, 5+yrs
Compression: 40-69 dB
Channels: 1-18+
Aid Limit: Multichannel, Wideband, None
Fit Type: Unilateral, Bilateral
Sound Field: 0°, 45°
Reference Position: Head Surface, Undisturbed
Figure 36 – Real ear audiogram menu
4. The clinician may now enter the patient’s audiogram. Use [F1] to select an ear
and press [F2] to select HTL to enter the patient’s hearing threshold levels. Use
the UP/DOWN arrow to select a frequency and use the RIGHT/LEFT arrows to
select the threshold level in 5 dB steps.