G.R.A.S. 45CA User Manual

4.2 Calibration
Beforemountingthemicrophone/preamplierassemblyintothetestxture,youmustcalibrate
the assembly using Pistonphone Type 42AP or Type 42AA (with optional 1" coupler adapter)
• Forinstructionsoncalibratingthemicrophone-preamplierassembly,refertothepiston-
phone’s instruction manual.
• The Pistonphone Type 42AP is delivered with an adapter for calibrating 1" microphones.
Fig. 4.2 Assembly of 1" microphone and ¼" preamplier to be calibrated
G.R.A.S. SOUND & VIBRATION
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Hearing-Protector Test Fixture Type 45CA

G.R.A.S. 45CA Specifications

General

Brand	G.R.A.S.
Model	45CA
Category	Protection Device
Language	English