High sensitivity for sound and vibration analyser

Edited by the Engineeringtalk editorial team Jan 24, 2003

A new highly sensitive dynamic signal analyser for FFT analysis and applications in vibration and acoustic analysis is now available from Kingdom.

A new highly sensitive dynamic signal analyser for FFT analysis and applications in vibration and acoustic analysis is now available from Kingdom, and will be formally announced at the IMAC XXI conference on 3rd February at Kissimmee, Florida, USA.

Known as Mobilyzer-II the new analyser (pn DP730) incorporates a novel architecture and application of the very successful sigma delta analogue to digital conversion technique to achieve a dynamic range, typically better than 120dB for either a 40 or 80kHz bandwidth across 8 to 32 channels, depending on the configuration, and with a spectral resolution of from 3200 to 25600 lines.

The physical design of the analyser includes a processor case which is a cabin case size (221 x 110 x 404mm) and which houses five modules each approximately 22mm wide.

Four of the modules are DSP processing modules while the fifth module is a Pentium computer module complete with hard disk.

Each of the DSP modules provides eight input channels (BNC connectors), two waveform output channels (one BNC and one SMB) and two tachometer input channels (SMB).

The SMB (small mini bayonet) connectors are a novel though not new introduction to the vibration and acoustic industry.

Fitted with a carrying handle the unit is a very comfortably portable 8- to 32-channel instrument and can be daisy chained in almost unlimited numbers providing in practical terms, an unlimited expansion of the channel count.

Mobilyzer-II includes a switching power supply, and the onboard Pentium computer is configured with its own hard disk to facility fast disk access for throughput and replay analysis.

The DSP case connects to a normal notebook or desktop computer which runs the application software under all current variations of Microsoft Windows operating system, via 10/100 Ethernet cable through the onboard Pentium computer.

The input channels, which all operate simultaneously can be coupled for either AC differential, DC differential, AC single ended, DC single ended or ICP input and can be set to measure 0 to 40 or 80kHz.

When used with a bandwidth of 80kHz, each DSP module is limited to four channels, making a maximum of 16 channels per DSP processor case.

The full library of SignalCalc analysis and application software will be available including initially auto power spectrum, frequency response function, real time zoom, correlation, histogram and synchronous time average, RPM based analysis, disk throughput recording, DAC playback and replay analysis and waterfall/spectrogram.

Other applications will follow including real time octave and 1/3 octave, sound quality-loudness and acoustic intensity, remote operation by ActiveX, quality control - pass/fail analysis, stepped sine analysis, order track analysis, sine data reduction, event capture, drop test, shock response spectrum, and multiple input multiple output.

The first five units have already been delivered to Metso Corporation a paper and pulp mill equipment supplier in Montreal, Canada, with more units due to go to Finland and Thailand.

Mobilyzer-II is available on short delivery at very competitive prices.