Coupler Measurements 75
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 Chapter 3.
3. Press [MENU] from the Coupler Multicurve screen.
4. Highlight COUPLER TYPE with the [∨, ∧] keys.
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.
5. Select MZ with the [<, >] keys.
6. Press [EXIT].
7. Select the desired source type with [F4].
8. Select the desired source amplitude with the [∨, ∧] keys.
9. Press [START/STOP] to perform the measurement. You should see CPLR MZ
appear on the right column of the screen. If necessary, press [START/STOP]
to end measurement.
See Figure 3.7 for a comparison of a BTE tested with an MZ coupler as opposed
to a 2-cc coupler.
