Page 45 - Fall 2007

A step forward in a cost/effective solution for Sound & Vibration Analysis is the new dB4 hardware platform from 01 dB-Metravib (Limonest, Greater Lyon, France), featuring 4 channels 24 bit DAQ (DC-20 kHz Full Frequency range) plus Tacho and Ext. Trigger inputs. dB4 offers parallel real
time processing and recording, applications oriented pro- cessing tools, data import/export capabilities, and TCP/IP commands on open Software platform for customizable development.
(nvh@01db-metravib.com)
Scantek, Inc., a leading distributor of sound and vibration instrumentation, and the first S&V instrument calibration laboratory accredited by NVLAP (NIST), has announced a new tapping machine from Norsonic. The rugged N-277 Tapping machine is used for making standardized impact noise tests (footfall noise) in laboratories and in buildings as set out in international and national standards.
• Impact sound transmission testing according to ISO140 part VI, VII and VIII, ASTM E-492 and ASTM E-1007
> >
rect tapping frequency is maintained at all times and temperatures.
A level gauge mounted on the top helps the user to align the unit when adjusting the fall height.
The tapping machine continually monitors each hammer with a laser sensor to measure the impact velocity to ensure that the energy imparted into the test floor is correct hence the effects of any friction or misalignments are immediately apparent. Each hammer has a LED indicator on the front panel that indicates when the impact velocity and tap- ping frequency are within the requirements of the standard.
• Built in self check of hammer fall speed, and tapping
sequence for automatic calibration of major compo-
nents.
> A crystal controlled servo system ensures the cor- (PeppinR@ScantekInc.com)
Instrumentation 43