GRAS 147EB Quick Manual

Quick Guide
GRAS 147EB CCP X-Rugged Microphone
Description
The 147EB microphone set for wheelhouse brake testing consists of a robust microphone set and three layers
of protection. The basic microphone set consists of a preamplifier which is designed to resist shocks and
vibration, and a microphone capsule with a diaphragm which is a more robust type than that conventionally
used on measurement microphones. The preamplifier/microphone assembly is watertight to IP67, the vent-
ing is protected against water and the BNC connector is also watertight. A windscreen and two protection
grids with built-in filters provide easily exchangeable protection.
Fig. 1. Three layers of protection: Windscreen on top of 1" protection grid on top of 1/2" protection grid. Both grids have built-in
acoustically transparent filters.
Delivered Items
147EB CCP X-Rugged Microphone Set
Optional Items
Windscreen for 147EB. 1 pc.
Windscreen for 147EB. 20 pcs.
1/2" Dust, Oil and Water resistant protection grid
1" Dust, Oil and Water resistant protection grid
5 m waterproof/high temperature BNC-BNC cable for 147EB
1/2" Calibration Adapter
AM0387-1
AM0387-4
RA0360
RA0355
AA0121
RA0341