Section 2: RealEar evaluation with FM system
47
8. Press [MENU] to enter the SPL Menu.
9. Select COMPOSITE for AIDED CURVE 1 and AIDED CURVE 2 using the arrow
keys.
10. Press [MENU] to return to the SPL Test Screen.
11. If necessary, use [
∧
] to select CRV 1.
12. Adjust the source level of CRV 1 to 65 dB SPL using [<, >].
13. Press [START/STOP] to begin the measurement.
14. When the measurement has stabilized, press [START/STOP] again to stop it.
15. This curve will be referred to as the Real-Ear Hearing Aid Response or RHA65. See
Figure 2.2.1.
2.2.2 Test FM system with typical input — RFM80
1. Set up and level the FM system according to Section 2.1.2. The environmental micro-
phone on the FM receiver should be off.
2. Use
[
∨
] to select CRV 2.
3. Use [<, >] to adjust the amplitude of CRV 2 to 80 dB SPL.
Figure 2.2.2
Comparison of RHA65 (CRV 1) and RFM80 (CRV 2)
4. Press [START/STOP] to begin the measurement.
5. When the measurement has stabilized, press [START/STOP] again to stop it.
