Applying The Cradle To The Cradle Positioner Assembly; Mounting A Handset With An Asymmetrically Mounted Receiver Outlet - BRUEL & KJAER HF HATS 5128 User Manual

9) Adjust the end stop until it just touches the edge of the handset.
10) Rotate the centering forks to angles that do not interfere with buttons on the side of the
handset or project much above the top side of the handset (this is to prevent them from
fouling the cheek of HATS when mounting the cradle on the cradle positioner assembly).
Tighten the forks around the handset.
11) Tighten the knob that locks the angle and the offset adjustments of the centering forks.
12) Unlock the sight and remove the cradle from the alignment jig.
The cradle is now ready to be mounted on the cradle positioner assembly and used for
measuring.

Mounting a Handset with an Asymmetrically Mounted Receiver Outlet

If the offset distance is not known, go through the steps in the previous section adjusting the
centering fork offset to ensure that the handset ECRP remains directly under the alignment jig
sight. In each case, offset the support feet accordingly to maintain a stable mounting for the
handset.
4.2.3

Applying the Cradle to the Cradle Positioner Assembly

1) With the handset firmly mounted in the cradle, attach the cradle to the cradle positioner
assembly at the second swivel joint ( C), see Fig.4.11.
2) Slide the barrel of the cradle positioner assembly to move the cradle along the ERP axis until
the handset is firmly pressed against the HATS pinna and lock the barrel in place.
3) Rotate the adjustment sleeve to move the cradle along the ERP axis. The force with which the
handset is being applied to the pinna can be read off the scale at the opposite end of the
barrel to where the displacement readings are shown.
✐
Measurements in the 'HATS-position' (see section 4.3.5) require the use of a pinna with a
Please note:
Shore hardness of OO 35, also known as a 'soft pinna', as the pinna needs to be able to
deform to allow the correct positioning of the handset ECRP.
4) Use the knob on the top of the Mounting Bracket to set A, releasing the locking mechanism
if necessary.  A allows the handset to be rotated about the ERP axis and is set using the
adjustment knob on the top of the Mounting Bracket. (The ERP axis is parallel to the y
described in section 4.3.5.)
5) Use the knob to set B, releasing the locking mechanism if necessary.  B rotates the handset
about an axis perpendicular to the normal of the ear-cap plane and the line of intersection of
the handset symmetry plane with the ear-cap plane. (This axis is also referred to as the z
of the handset – see further details in section 4.3.5.)
6) Use the knob to set C, releasing the locking mechanism if necessary.C rotates the handset
about the line of intersection of the handset symmetry plane with the ear-cap plane (also
referred to as the y
Handset Positioner for HATS Type 4606 Features and Functions
-axis).
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-axis
m
-axis
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