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AVANT
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Real-Time Data Acquisition and Analysis

Function

Time domain

Time capture, auto correlation analysis, cross correlation analysis, orbit plot

Frequency domain

Real time spectrum analysis, auto power spectrum, cross power spectrum, power spectrum density, transform function, coherence function, FFT, shock response  spectrum

 

Amplitude domain

Histogram

Waveform Source

Sine, square wave, triangle wave, impulse chain, burst chirp, DC, Swept-sine, white noise, burst random and pseudo random

 

Real time rate

Up to 42 kHz analysis frequency on all 8 channels

Spectral lines

200, 400, 800, 1600, 3200, and 6400(FFT Resolution)

Windowing

Hanning, Hamming, Flattop, Uniform, Bartlett, Tukey, Blackman, Blackman Maximum, Blackman Minimum, Welch

Averaging

Linear, exponential, peak hold, peak hold for N frame on both Time and frequency modes

Signal calculator

All signals computation and the display are all on-line finished, including plus, minus, multiplication, division, integral and differential etc

 

Triggering

Input channel, auto/manual arming, Pre/Post-trigger delay, auto noise reduction

 

Acoustic Analysis

Standards

Conforms to ANSI std.S1.11-1986 Order 3 Type 1-D and Standard IEC 225-1966

Frequency Range 

1/1 octave bands: 20Hz~16kHz

 

1/3 octave bands: 20Hz~20kHz

Weighting

Linear, A, B, C selectable

Sound level types

Peak hold, impulse, RMS, fast and slow sound level measurements Slow and Leq Per ANSI S1.4-1983 Type 0 and IEC 651-1979 Type 0

 

Measurement time

1.3 mSec to 48 hours

Measurement range

35dB to 130dB Per ANSI S1.11-1986

 

Real-Time Order Tracking Analysis

Method  

Amplitude estimation based on FFT

Order span

1st to 20th order tracked, 45<RPM<300,000

Order number

20th Real time analysis

Amplitude extraction

Based on fixed band, fixed spectral lines, or frequency range

Delta order

0.0075 to 1

Resolution

Up to 400lines

Amplitude accuracy

?dB (typ.)

Display

Order map (mag. and phase), order track (mag. and phase), orbit

 

Swept Sine Analysis

Swept Sine Analysis

Source level, input range and frequency resolution

Dynamic range

Up to 100dB

 

Modal Data Acquisition & Analysis

Input No.

4 to 16

Data Format

UFF

Applications

Hammer strike, electric shaker (Swept-sine, random vibration excitation)

 

Shock/Drop Measurements and SRS Analysis

Transient capture

Acceleration range

100,000gn

Pulse duration

0.5 to 1,000ms

Shock response spectrum

SRS analysis

Linear or logarithmic resolution 1/1,1/3, 1/6,1/12,1/24th octave analysis

Parameter

Damp coefficients and Q (quality coefficient) adjustment. Independent lower limit, upper limit and reference frequency adjustment

 

SRS definition

Calculate SRS and automatically create RRS via the ideal waveform. Set the tolerance in the RRS table or waveform

 

Reference pulse

Standard  

National STD, MIL-STD, user defined

Pass/Fail tolerance

Time domain definition

U.S. Military Standard Mil-STD 810, High/low percentage magnitude,  Minimum acceleration magnitude, and auto overlap acquired waveform to the ideal one

 

Pass/Fail verification

Verification 

Auto comparison of the offset SRS and RRS error between captured waveform and the preset one

Display 

Logarithmic coordinates to display the consistency between the captured waveform and preset waveform

 

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