BRUEL & KJAER HATS 4606, User Manual

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CHAPTER 2
Operation
11
7) Switch the calibrator off.
8) Remove the calibrator from the adapter.
9) Remove the calibrator adapter DI-0658 from the coupler by unscrewing the nut.
10) Attach the coupler to the ear simulator by tightening up the nut.
CAUTION: Be careful not to damage the thread of the nut on the coupler or the ear canal. Do not use
excessive force and make sure that the threads in the two pieces engage properly before
you screw in the coupler. Do not over-tighten.
11) Reposition the complete ear simulator by fitting the ear simulator back into Type 5128.
✐
Please note:
It is recommended to exchange the pinna within three years from the date stated on the
label, as the hardness of the pinna might change over time. Please see Fig.2.6 (2) and
Fig.2.6 (10) for positioning of the label.
2.5.1 Separating the Head from the Torso – Types 5128-C/D Only
Separate the head from the torso by turning the head 90° in either direction and then pulling it
out gently from the torso, see Fig.2.7. Cables attached to both the ear simulators, the mouth
simulator and the power supply can be disconnected from the connector plate inside the neck.
When replacing the head, make sure the marks on the neck of the torso are lined up with the line
on the neck, this ensures that the head is facing exactly forwards. This is how the head should be
positioned in relation to the torso for the vast majority of applications, but the head can be set
at other angles if required. To reassemble the head, simply reverse the procedure.
Fig.2.7
Steps to remove the
head from the torso of
Types 5128-C/D