G.R.A.S. SOUND & VIBRATION
17
45CA Headphone/Hearing-Protector Test Fixture
To Power module
Head
Microphone/preamplifier
assembly
Pedestal
Tube
Fig. 5.15
8.
Replace the head onto the pedestal (Fig. 5.15)
Note:
Do not forget to tighten the two 1.5 mm Allen grub screws.
Fig. 5.16
9.
Insert the RA0039 assembly firmly into the recess (Fig. 5.16)
RA0039
assembly
Grub screw for holding the
microphone in position.
Use Allen key, 2.5 mm, YY0016.
Tighten both
of the 1.5-mm
screws