Even if you change the default color (Basic colors) of the waveform in the environment setting, the basic color list is displayed on the color setting screen and the waveform color can be restored to the original color.

This function controls starting or operating the OS-2000 series from the other software on Windows.

Control API is an application interface library to control access of OS-2000 series, and Control API monitor displays the display of its conditions.

Since Control API is Network responding, the OS-2000 series can be controlled from other PCs on a LAN without complicated setting.

As Control API is provided as DLL component, it allows for the use of managed code (Microsoft Visual C#) that is handled on NET Framework.

*The followings are required to be installed to a client PC. .NET Framework 2.0 Service Pack 2 or later / Microsoft Visual C# 2005 or later.

We provide sample program executable file and source code for controlling of the OS-2000 series. Sending commands from a client side allows it to control various functions externally.

---Switching playback channel
Playback channel can be changed without stopping the sound in a seamless way. You can change the channel whenever you want and compare subtle sound difference between channels.

---Mixing playback
This function enables mixing of several data on which a different phenomenon was recorded. For example, sound files of frequency-resolved sound can be compounded and played back as one file.

The binary ERG file recorded by IPG Automotive simulation software (CarMaker/ TruckMaker/ MotorcycleMaker) is able to be read directly without conversion to the text file.

The actual vehicle data recorded by LC series GPS speedometer (Ono Sokki), test data recorded by FAMS-R5 Flexible Automatic Measuring System Release 5 (Ono Sokki), and simulation software data (IPG Automotive) are able to easily be compared on the OS-2000 series software by displaying side by side.

* .xls and *.xlsx formats of Excel^® files can be imported. Microsoft Excel^® 2003/2007/2010 must be installed on the same PC.

* Excel^® is registered trademarks or trademarks of Microsoft Corporation of the U.S.A and other countries.

Recorded file (*.aqv) by Visual data recorder AQ-VU (made by TEAC) can be read. The AQ-VU is a data recorder which can record up to 4 channels video and analog signals at the same time.

Enables direct import of the recorded file by AQ-VU. Video and analog data can be checked without file conversion.

To check the effect of fluctuation sound, the frequency band component of the sound had to be increased and decreased by bandpass filter. So it cannot help changing the frequency characteristics of the sound.

The fluctuation sound simulator removes and amplifies only the fluctuation components of the sound without changing frequency characteristics.

You can extract the specified component when you want to check just the fluctuation component.

>> Click here for more details(OS-2760)

In Parametric Equalizer, not only frequency filter but also order filter is available. Order Filter is the filter for frequency of noise or vibration that changes according to the variation of rotation speed in rotation equipments including engine and compressor. Only noise and vibration that is generated from the specific rotating body can be extracted, removed, and evaluated.

The example of using BRF (Band reject filter) is as follows when the center frequency is 100 Hz and the order is third.

When the center frequency of the BPF is 100 Hz, the center frequency of the filter remains 100 Hz even if the rotation speed of the rotating body varies from 2000 r/min to 8000 r/min. On the other hand, the center frequency of the BRF changes depending on the rotation speed when the order is third; BRF for the center frequency100 Hz at 2000 r/min, BPF for the center frequency 400 Hz at 8000 r/min. Only the noise or vibration generated from the specific rotating body that has found in tracking analysis can be filtered.

Synchronizer is a function for aligning the positions of waveforms. For example, when the recording start times of measurement data are misaligned, but start trigger signals were recorded for the respective channels, you can adjust the waveform to align the positions of the start trigger signals.

You can align the positions of plural time-series waveforms in terms of setting a threshold.

By using the template created in advance, FFT analysis (power spectrum) and 1/N octave analysis can be executed automatically up to 100 files.

*The OS-0252 FFT analysis and OS-0264 1/N octave analysis (options) are required to use continuous automatic analysis function.

Example of continuous automatic analysis using DR-7100 (acoustic vibration portable data recorder)

Helpful functions to make analysis using movie effective.

--Playback speed adjustment
Enables to adjust playback speed freely with a slider. The high speed video can be seen in slow motion. Also you can see the change of the continuous data in each step by using single frame step function.

--Brightness · contrast adjustment
Video not bright enough can be seen easily by brightness · contrast adjustment function.

--Distance between two points display
Distance and displacement in the image can be checked by moving two search cursors with mouse operation.

--Customization of frequency weighting correction
It is possible to use reverse A-weighting and user-defined filters as a a frequency weighting correction.

--Enhanced calculation function
"ABS()"and "SQRT()"calculations are added.
Added SQRT function enables power summation of tri-axial data and evaluation of magnetic field.

Time frequency analysis of the transient phenomena can be performed using Short time Fourier Transform, Wavelet conversion and Wigner distribution

Calculation speed of Wavelet conversion gets faster when the PC you use has multi-core CPU*1 or GPU*2.

*1: Calculation by the PC with CPU: Approx. 5 times (CPU: Corei7-930 2.8GHz)
*2: Calculation by the PC with GPD: Approx. 7 times (GPU: GeForce GTX560)

This analysis function is effective when the following situation.

1. For timbre evaluation of a musical instrument during a performance, it is not easy to see the state that frequency changes for broadband in short time by FFT Analysis.  

 
2. It is difficult to capture the amount of feature (frequency) of the impulsive abnormal noise which is sometimes mixed in machine tool sound by FFT Analysis.

--G weighting correction
G weighting correction of 1/3 octave is added. It enables to evaluate affect of micro low frequency (standardized in ISO7196:1995) to human senses.

--Linear Leq
Result of 1/N octave can be obtained as linear Leq which conforms to JIS Z 8731:1999. Instantaneous value not including time constant value can be calculated.

--Y-axis linear scale
Y-axis in a graph can be displayed in both decibel and linear scale.

· Two analyses methods of ""ISO532-1"" are added: method for calculating loudness intended for stationary sounds, and method for calculating loudness intended for non-stationary sounds.

"LL_E"* value is displayed on the avarage screen of ""ISO532-1 Stationary sound Loudness"", and "LL_P"* value is displayed on the time trend and color map of ""ISO532-1 Non-stationary sound Loudness"

· Conforms to DIN 45631/A1 Non-stationary loudness which is the standard described in Deutsche Industrie Normen.

· In stationary loudness (ISO 532B) and non-stationary loudness, the analysis result can be checked every 0.1 Bark with Bark display mode.

· Three kinds methods of calculating the sharpness of ISO 532B stationary loudness have been added: DIN45692, Aures, and Bismarck.

(LL_E is the loudness level obtained from the average energy value of the 1/3 octave band level used in the calculation of ISO532-1. LL_P is the loudness level obtained from the average energy value of the time-series data (2ms interval) calculated in the calculation of ISO532-1 Non-steady-state Sounds Loudness.)"

Data of DS-3000 series can be recorded and played Recording available up to 102.4 kHz of sampling frequency (DS-3000 series. 8 channels).

Connecting interface can be selected in accordance with your PC. (PCI Express, PC card, Express card, or USB)

Max. sampling frequency to be recorded

[Frequency analysis plug-in] is included in optional OS-0251: Statistics Analysis.

Vehicle, machinery, and structural object are affected by vibration irregularly changed. To capture the changing phenomena over time accurately, it is important to grasp the quantity and the rate that the phenomenon occur. This function can show the extreme value or amplitude value such as stress or vibration acceleration as histogram by using various processing technique. Various kinds of phenomena can be captured.

The following algorithms are used in Frequency Analysis of the OS-0251 Statistics Analysis.

Multiple TDMS format files created by the SYNC measurement function (DS-0328) of the combustion analysis software (DS-0328) are displayed in one continuous file on the OS-2000 series software. This is effective for continuous analysis of start/stop of HEV or idling-stop.

When reading the TDMS file recorded by SYNC measurement function on the OS-2000 series software;
· Multiple divided files can be read at once.
· Display as a continuous file on the OS-2000 is available.
· Multiple files become one group and you can move all files in conjunction by aligning them.
· It is possible to draw multiple cycles of in-cylinder pressure in the combustion analysis monitor.

[Combustion Analysis System]

https://www.onosokki.co.jp/English/hp_e/products/keisoku/automotive/ds3000_combustion.htm