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  • VibroMatrix® - Questions & Answers

    General questions

    1. How does the license system of VibroMatrix work?

    VibroMatrix works with activation codes that can be purchased by the user and are installed via the InnoMaster on the InnoBeamer. This has the advantage that the licenses are present at the measurement independently of the computer. Consequently it is permitted to install VibroMatrix on several computers. There is no cumbersome activation or registration.

    One activation code is only valid for one specific channel (1 or 2) of an InnoBeamer with a specific serial number. Therefore, this information is required in the subsequent acquisition of a software license: serial number and channel number.

    Since one license is required for each software instrument per channel, three licenses are needed for triaxial instruments as for instance the InnoMeter HVM 5349. Therefore, discounts are already granted with the second license. Because of further discount levels, the price advantages increase quickly with more licenses.

    This license model reflects the high expandability of VibroMatrix and serves both users with small installations as well as power users fairly.

    2. How can I test VibroMatrix?

    On our download page we offer a free trial version of the VibroMatrix software. This is the full software package including all instruments. If you click the icon InnoMaster Trainer in your program menu, the software starts in the training mode. Instead of connecting the InnoBeamer hardware you may use simulated signals. The simulation menu opens after a right mouse click in the measuring channels window.

    3. Can I calibrate VibroMatrix?

    Yes. The system includes a calibration function which allows to calibrate the entire measuring chain from the sensor through the InnoBeamer to the software using a vibration calibrator.

    Additionally we offer the calibration of an entire measuring chain from the sensor to the VibroMatrix instrument as service.

    4. Can VibroMatrix be operated self-sufficiently for a longer period on an unattended PC?

    Yes, some of our customers practice this that way. Here, the use of the annunciating technique vie e-mail is advantageous. Events and measurement diagrams are automatically sent to your workspace then.

    The automatic start of a measurement with starting the computer can be set up as follows:

    • Put a link to the InnoMaster into the autostart folder of your PC.
    • Activate in the InnoMaster the loading of the last used workplace.

    5. How can I export measuring results from VibroMatrix into other software?

    Most instruments with graphical output provide an export function for the graphic as bitmap via the clipboard, as bitmap, PNG or EMF file as well as text file with the illustrated pairs of values.

    The InnoLogger records the measured values on hard disk so that they can later be evaluated and displayed with different programs.It is possible to store the data either as binary file or in text format.

    Also the raw data recording in the InnoMaster RT allows a data export. The recorded raw data file (*.ids) is loaded into the InnoMaster Replay. With the optionally available export functions IDS2ASC and IDS2BIN, you are able to export the raw data into an ASCII or binary file.

    6. How can VibroMatrix display time graphs of vibration signals?

    Slowly changing vibration signals, i.e. characteristic values as rms or peak values,  may be recorded in the InnoPlotter in the way a strip chart recorder does. Für die Darstellung schneller Zeitsignale, wie z.B. Impulsverläufe des Momentanwerts eignet sich das InnoScope.

    7. Can I install and use one VibroMatrix license on several PCs?

    Yes, the license key for the VibroMatrix instruments is only installed inside the InnoBeamer and the use by several computers is explicitly permitted.

    8. How does offline measurement work?

    VibroMatrix can  save the real-time signal of the InnoBeamer on hard disk, as soon as the software instruments are switched on. You only need to enter a file name and to activate a checkbox in the InnoMaster. The recording happens in the background while you measure as usual.

    To replay stored data, close the InnoMaster RT and start the InnoMaster Replay. You load the raw data file and see already the recorded data as a time bar with modulation for each recorded channel. Then open the instruments as usual and configure them as needed. Because the advantage of the raw data is that you now are able to adjust subsequently any signal processing - even the one that you did not use during measurement period - without having to perform the measurement again.

    As known from other play-back devices you will find the buttons play, fast forward, rewind and stop, as well as fast-track and single-step mode. After clicking the play button, all activated software instruments will start measuring with the data from hard disk.

    9. Why does the measurement stops after a while?

    The measurement data transmission in VibroMatrix works as a continous data stream. From the time when the first instrument is switched on until the last one is switched off, the data is consistently transported and processed in the instruments. This requires a computer, which copes with a constant load. If the used computer is overloaded, VibroMatrix stops by default, since the continuity of the measurement data stream has been violated.

    Check the CPU load display of the InnoMaster. If the displayed values are permanently above 100%, you should either reduce the refresh rate in the menu "Displaying" or minimize the number of opened instrument windows.

    Furthermore, the InnoMaster offers a function, which restarts the measurement even after overload. Of course, the otherwise continous data stream is interrupted then.


    InnoBeamer®

    1. Does the system measure with full sampling rate when both channels of an InnoBeamer are active?

    Yes. Both channels of the InnoBeamer are sampled with full sampling rate.

     

    Type

    Sampling rate for each channel [Hz]

    Signal width for each channel [Hz]

    X2

    96 000

    40 000

    LX2

    8 000

    3 200

    L2

    10 000

    2 000

    2. Are there InnoBeamer drivers for other software?

    No.

    3. Why do I just receive measurement values of one InnoBeamer?

    Are more InnoBeamer of type X2 or LX2 connected to a PC, the devices have to be linked among one another by the synchronisation cable i310. Otherwise, the devices do not run synchronously.

    Multi-channel instruments, that obtain the measurement data from different InnoBeamer, recognize this situation. The instruments wait then until they receive data simultaneously.

    4. How many InnoBeamer devices can I connect to one PC?

    That depends on the type of InnoBeamer. The type X2 with a sampling rate of 96 000 values/s has been tested successfully with 8 devices, i.e. 16 channels. For the type LX2 with a sampling rate of 8 000 values/s it has been 32 devices = 64 channels.The InnoBeamer are connected to the PC via USB hubs. Not every hub is sufficient. You get suitable, industrial compatible USB hubs from the IDS Innomic GmbH.


    Questions concerning measurement

    1. In the measurement of the vibration displacement, to high or unstable values are displayed.

    The reason for this is, that in the use of accelerometers a double integration of the signal over time is necessary. This procedure enhances in particular low-frequency noise. Increase the high-pass filter to the extent that low frequency noise can be suppressed. From 3 Hz on, no significant interferences should occur anymore.

    2. My photoelectric reflex switch does not work. No speed signal appears, although the photoelectric switch lights up as soon as it detects the reflector.

    The power supplied from your PC via the USB interface may be too low. This problem so far only occurred when a USB extension cable was used and the cable resistance became too high.

    3. The rotary speed detection does not work reliably at higher speed. No rpm value is displayed.

    The rpm sensor needs a certain impulse length in order to capture the rpm impulse. If the reflective sticker is very small, the impulse duration may be too short.

    • Remedy offers a larger piece of reflective foil that covers a bigger part of the rotor circumference.
    • Likewise, it helps to glue the reflective sticker on a smaller radius, e.g. if it has been attached to the front of the rotor.

    During an internal test we were able to capture a mark of 8 mm width on a radius of 40 mm still until 18 000 1/min.

    For even higher speeds we offer other rpm detection as the standard model. For instance, the contrast scanner LS KTM is suitable. This one is used successfully in the high-speed engineering at speeds up to 60 000 1/min.


    InnoAnalyzer®

    I want to see low frequencies in high spectral resolution but also observe higher frequencies. Why does InnoAnalyzer not have a logarithmic frequency axis?

    An FFT produces equidistant spectral lines. If you plot them logarithmically, only a few lines will appear in the range of lower frequencies, i.e. in the first third of the frequency axis. The rest crowds much more in the right part of the axis. The a.m. problem can be solved much better by means of the clone function:

    • Display the entire frequency range in one InnoAnalyzer window.
    • Clone the InnoAnalyzer.
    • Display the lower frequency range with high resolution in the second InnoAnalyzer.