Precision 1 mHz –10 kHz arbitrary waveform generation capability

10:22 Nov 3, 2016 

Pouvez-vous nous communiquer la traduction pour toute la phrase interrogée:
« Precision 1 mHz –10 kHz arbitrary waveform generation capability » ?

Nota: Le terme choisi « plage de fréquences » n’est qu’une circonscription pour « 1 mHz –10 kHz » et désigne « frequency range » ou « frequency band », termes non interrogés. Comment sont les autres termes « arbitrary waveform generation capability » et « precision » traduit dans le contexte ?

Malheureusement personne s’occupait de la question « quel est le mot problématique ».

18:56 Oct 29, 2016 

As no response received so far, I started my own research and found no trace of testing equipment for mechanical properties, but some AWG-instruments for electrical testing with terminology in English and French, allowing me to propose a different translation.

BTW: The question, whether "1 mHz –10 kHz" designates a frequency range or not, can be answered as well: The equipment is capable to generate individual frequencies within this range. This must be distinguished from equipment which produces a broad band of frequencies, called wobbulators or sweep generators.

22:17 Oct 28, 2016 

I know material tests like 'Creep and Stress-Relaxation Test' or 'tensile strength test' from my professional activity as test engineer. But I cannot associate a waveform generator with this testing machinery. Normally the workbench is actuated by electric motors like step motors or gear motors supplied by mains voltage or frequency converters. But I cannot believe in such low frequencies for the supply voltage.

Or do you mean the test cycle or ramp time? A mechanical stress and strain variation over the time?

Unfortunately we do not have any additional information from J.-C. up to now, answering these essential questions.

09:08 Oct 28, 2016 

In the mechanical test machines that I know for working on their manuals since years, the waveform generator drives the test bench through an electric or hydraulic actuator to test materials.
In creep and stress relaxation tests, it is not unusual to have 1000 second cycles, this is less than 20 minutes, which may be approppriate to test the fire resistance of a building beam.
http://www.instron.us/en-us/our-company/library/glossary/c/c...
By the way understanding Mega instead of milli should create an odd order for the numbers, 10 kHz should probably be before 1 MHz

08:29 Oct 28, 2016 

Thank you for your suggestion, Tony. To be sure, I like to have a corresponding confirmation by Jean-Christophe. "waveform generation" is to vague for me. It would be better that he also informs about the purpose of that instrument.

He should also explain, what the strange wordings "Precision ... waveform generation" comprises. It raises questions, whether it describes a accurate waveform without any harmonics, or indicates the precision of the selected frequency, or how exactly the frequency is determined or maintained?

What are values and units for this "precision" indicated anywhere in the document?

07:24 Oct 28, 2016 

There is nothing wrong with the concept of 1 millihertz here, and it would be a grave error to assume it was meant to be 'mega-' — not least, becasue freqiencye ranges are always conventionally give from the lower to the higher frequency, unless specifically stated otherwise.
Here, it is not the electromagnetic wavelength that is of interest, but the period — this sort of low-frequency synthesized waveforms are comonly used in specialist fields, one of them being vibration and seismic analysis, for example, as well as other fields where it is not necessarily the periodic nature of the waveform that is of the most interest, but rather, the length of time over which a custom waveform can be 'programmed'.

22:59 Oct 27, 2016 

I'm also confused as a frequency of 1 Millihertz [mHz] has a wavelength of 1000 seconds x 300,000 km/s = 300,000,000 km. That is 2 times longer than the distance from the earth to the sun. Who can make use of such slow periods changing polarity all 7 minutes? Or does it means 'Megahertz'?

Do you know the application of this generator? Is it a sweep generator, generating all frequencies over the complete frequency range?
https://en.m.wikipedia.org/wiki/Sweep_generator
https://en.m.wikipedia.org/wiki/Wobbulator

09:47 Oct 27, 2016