Frye FONIX 7000 - Manual (Page 98)

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FONIX 7000 Hearing Aid Analyzer
To use the OES Option:
1. Attach the MZ coupler to the aid. See Table 3.7 for details on choosing the
correct MZ coupler.
2. Set up the hearing aid for testing as described in Section 3.3.
3. Press [MENU] in the Coupler screen.
4. Highlight Coupler Type under Measurement Settings with [∨, ∧].
5. Select MZ with [<, >].
6. Press [EXIT].
7. Select the desired source type with [F5]. (Press [F5]. Use [∨, ∧] to select the
desired source type. Press [>] to complete the selection and close the pop-
up menu.)
8. Select the desired source amplitude with [∨, ∧].
9. Press [START] to perform the measurement. You should see OES appear in
the Curve Characteristics box in the “Cor” column of the selected curve. If
you are using the FAST, COMPOSITE, or DIG SPEECH signal, press [STOP]
to end the measurement once it has stabilized.
See Figure 3.7 for a comparison of a BTE tested with an MZ coupler as opposed
to a 2-cc coupler.
Table 3.7—Which is the Correct MZ Coupler to use?
TYPE OF AID COUPLER COMMENT
ITE, ITC MZ-1
BTE, or EYEGLASS MZ-1 With custom earmold attached.
(NOTE: Vents must be plugged.)
MZ-2 Without custom earmold attached, when a 3 mm
horn earmold is planned, use with the Ear-Level
Hearing Aid Adaptor that normally snaps onto the
HA-2, 2-cc coupler.
MZ-3 Without custom earmold attached, when a con-
ventional (#13 tubing) earmold is planned, attach a
length of #13 tubing that corresponds to the length
of the sound channel of the wearer’s earmold.
BODY MZ-2 With snap-on receivers, use the MZ-2 without the
Ear-Level Hearing Aid Adapter attached.