Cradle Positioner Assembly - BRUEL & KJAER HF HATS 5128 User Manual

34 High-frequency Head and Torso Simulator (HF HATS) Type 5128 – User Manual
4.1.3

Cradle Positioner Assembly

Fig.4.7
Cradle positioner
assembly, consisting of
the barrel and the arm
The cradle positioner provides much of the adjustment flexibility of the handset positioner. It can
be reverse mounted on the mounting bracket and all graduations are mirrored giving the option
of measurements on both left and right ears.
The cradle positioner consists of the barrel, which bolts onto the mounting bracket (see Fig.4.8),
and the arm, to which the cradle attaches.The barrel provides adjustment parallel to the ERP axis
(formed by the ERPs of the left and right ears of HATS). The handset positioner is adjusted along
this axis by rotating the adjustment sleeve with the displacement indicated on the ERP-axis
displacement scale. The locking collar disengages the adjustment mechanism for quickly
dismounting/repositioning the cradle or handset.The arm has two single-plane swivel joints with
graduations: B and C. They allow inclination of the handset about the ECRP in two planes by
adjusting their angles. The second joint, C, also serves as the mounting socket for the cradle.
Angles can be set to within half a degree.
✐
The locking collar must be set to the 'Lock' position for the adjustment mechanism to
Please note:
work.
Arm
Cradle socket
‘ C adjustment
Barrel
Adjustment sleeve
ERP-axis displacement scale (mm)
‘ B adjustment
Applied force scale (N)
Locking collar
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