CHAPTER 1
Operation
11
Since the ear-canal extension of the HATS is made of pliant silicone rubber, it can
accommodate some actual ear-moulds from ITE, BTE, and canal hearing-aids without the need
for ear-mould simulators.
Fig.1.4
Cross-section of the head
of HATS with the ear
simulator and preamplifier
fitted
Mounting the Ear Simulator and Preamplifier
It is not necessary to split the head to mount the preamplifier and ear simulator (ignore step 9 if
the head is assembled). To mount an ear simulator and preamplifier (see Fig.1.5) in the head (if
the preamplifier and Angle Adaptor UA-1345 are already in position ignore steps 1 and 4):
1) Remove the head from the torso by turning it through 90and lifting it off the torso.
2) Placing it on a cloth or similar so that it is not scratched, position the head on its side, with
the side of interest facing upward.
3) Fit the 2.5mm metal spacer ring DB-3517 into the ear hole.
4) Carefully screw the ear simulator onto the angle adaptor (UA-1345).
5) Slide the ear simulator/angle adaptor assembly into the ear hole and ensure that the recess
in the angle adaptor slots together with the guide-pin inside the ear hole (see Fig.1.5.1).
6) Screw in the black ear-simulator securing-ring using Ear Mounting Tool Type QA-0167.
Use finger light torque only – do not over-tighten. (see Fig.1.5.2–4).
7) Insert the microphone preamplifier (without the cable) from the bottom of the head and
carefully screw it into the angle adaptor (clockwise) using Preamplifier Mounting Tool
Type QA-0223. (see Fig.1.5.5).
990049/3
Right
Pinna Simulator
1/2" Microphone
Preamplifier
Spacer Ring
DB-3517
Ear Simulator
with 1/2" Microphone
Ear Simulator
Securing Ring
DB-3021
Angle Adaptor
UA-1345
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