9.
Insert the RA0045 assembly into the test fixture.
G.R.A.S. SOUND & VIBRATION
Page 26
Hearing-Protector Test Fixture Type 45CA
Fig. 6.10
8.
Replace the head onto the pedestal,
Note:
Do not forget to tighten the two 1.5-mm screws (Fig. 6.10)
To Power module
Head
Microphone/preamplifier
assembly
Pedestal
Tube
Press until inner
edge is flush with
recess surface
Grub screw for
lightly
pinching and holding the
coupler in position.
Use Allen key, 2.5 mm,
YY0016
Fig. 6.11
Always tighten
both of the
1.5-mm screws
