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

Real Ear Measurements 30
Figure 37 – Audiogram and LDL entry screen
5. If a patient’s hearing loss is conductive or mixed, it is important to enter bone
conduction thresholds when using the NAL-NL1 target. Press [F2] to select Bone
and use the procedure listed in Step 4 above to enter the patient’s bone
conduction thresholds.
6. Press [F3] to use predicted LDLs or use [F2] to select LDL to enter a patient’s
measured LDLs using the same procedure listed in Step 4 above. The authors
have a very strong preference for using measured and not predicted LDLs.
7. If performing a binaural fitting and a patient has a similar hearing loss bilaterally,
you may press [F4] and select COPY EAR to copy data to the opposite ear. To
change individual threshold values as necessary, press [F1] to select the
appropriate ear and repeat Step 4 in order to make changes to the copied data.
8. Press [EXIT] to return to the Real Ear Navigation screen. Press [F3] to open the
Insertion Gain screen.
9. To ensure proper probe tube placement, verify that the bottom graph is labeled
as GAIN (“GAIN” should appear in the upper left corner of the display). If it reads
“SPL,” the display will need to be changed to GAIN by following these steps:
a. Press [MENU] from the insertion gain screen to open the local menu.
b. Use the up and down arrows to select Display under Display Settings.
c. Use the left and right arrows to choose GAIN.
d. Press [EXIT] to return to the insertion gain screen.