Frye FONIX FP35, Краткое руководство пользователя

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4: Real-Ear Measurements
35
4.4.2 Measuring the Aided Response
The second step in an insertion gain measurement is the aided response.
If you would like to view the measurement as an insertion gain curve and compare
it to an insertion gain target, take this measurement from the Insertion Gain Screen.
If you would prefer to view the
aided gain , take this measurement from the Unaided
& Aided Response Screen. Move between the two screens by using the [NEXT] and
[BACK] keys while in Real-ear mode.
Whenever you take a measurement in one of these screens, it will automatically be
converted and placed into the other screen.
To take an aided measurement:
1. Place the aid into the client’s ear taking care not to drag the probe tube further
into the ear canal. Once the aid is in the ear, the red mark on the probe tube
should be at the same position it was for the unaided test. (See Figure 4.2.4C.)
2. Have the client set the aid’s gain control to the normal use level.
3. Press [F4] to select the source type. DIG SPCH is recommended if you have the
Composite/Digital Speech Option. Otherwise, use FAST.
4. Use the [
5
,
6
] buttons to adjust the source amplitude to the desired level,
usually the same level used for the unaided measurement.
5. Instruct the client to resume the position they were in for leveling and testing.
Tell them to sit very still while the signal is on.
6. Press [START/STOP] to introduce the signal. The aided response will appear on
the graph as a thin line labeled with a curve number. See Figure 4.4.2.
Note: If you are using the COMP, DIG SPCH, or FAST signal, you can change the
source amplitude during testing to see how the aid responds to such changes.
7. Press [START/STOP] to end the measurement if you are using the COMP, DIG
SPCH, or FAST signal.
8. If desired, press [F2] to select a another curve number and repeat steps 3-7.