Glossary entry

French term or phrase:

à la précision du quartz près

English translation:

to within the accuracy of the crystal

Added to glossary by Tony M
Jun 2, 2015 20:59
9 yrs ago
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French term

précision du quartz près

French to English Tech/Engineering Electronics / Elect Eng Automotive context, PSA/Renault
ASPECTS TEMPORELS DES PARAMETRES ET TRAMES CAN

Précision des périodes théoriques de transmission : Précision du quartz du contrôleur CAN.
Précision de l'instant réel de demande de transmission : Entre 0 et 5 ms après l'instant théorique de transmission.

Exemple : Trame émise avec une période théorique de 20 ms : La période moyenne est de 20 ms (précision du quartz près), et deux demandes successives d'émission sont espacées de 20 ms ± 5 ms.

Temps maximal de transmission d'une trame sur le réseau (hors perturbation) : 5 ms.
Change log

Jun 2, 2015 21:40: Tony M changed "Field" from "Other" to "Tech/Engineering" , "Field (specific)" from "IT (Information Technology)" to "Electronics / Elect Eng" , "Field (write-in)" from "PSA/Renault" to "Automotive context, PSA/Renault"

Jul 9, 2017 00:38: Tony M changed "Edited KOG entry" from "<a href="/profile/1063948">pooja_chic's</a> old entry - "précision du quartz près"" to ""to within the accuracy of the crystal""

Proposed translations

+1
40 mins
Selected

to within the accuracy of the crystal

The expression ...près always requires handling on a case-by-case basis in EN, but I think this would probably be the most natural and idiomatic way of putting it in this particualr context.

quartz of course = quartz crystal — but in EN, we just call it a crystal (used as a very accurate timing reference in many electronic situations)

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Note added at 11 heures (2015-06-03 08:10:15 GMT)
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I think it's important to bear in mind that FR uses the one word 'précision' to convey the meanings of both 'accuracy' and 'precision' in EN — which in many cases are synonymous, though some people here have highlighted nuances of meaning which may be important in some contexts.

I feel sure Asker's main issue here was with the expression uisng 'près', and also perhaps the 'quartz', which amounts to a faux ami here.
Peer comment(s):

neutral Jennifer Levey : Given Asker's context, methinks you mean 'precision' (repeatability/variation of the cycle period), not 'accuracy' (mean cycle period).
3 hrs
No, I mean 'accuracy' — i.e. how close the crystal is to its nominal frequencey — the frequency tolerance.
agree Daryo : 'accuracy' [mean cycle period being always the same] is exactly the point of a device that controls the timing of any process
6 hrs
Merci, Daryo ! Exactly! FR often uses 'précision' where we use 'accuracy', there is a very real danger of a faux ami
neutral Michael Taylor : I would prefer the term precision(mean period correct) here because it is being used for the measurement of an average time period, which also is much greater than the period of the crystal, so there is no information about the repeatabilit of the clock.
10 hrs
I don't think 'accuracy' implies anything about the 'mean period', it is just about how close it is to 20 ms — it will be as accurate ±X% as the accuracy of the crystal; by and large it will always be the same (counts pulses) exc. temp. drift etc.
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4 KudoZ points awarded for this answer. Comment: "Thank you"
10 hrs

to within the accuracy of the quartz

quartz is a mineral and it was used on watches "quartz watch accuracy
Peer comment(s):

neutral Tony M : 'quartz' is only used in that specific context, and in a marketing register; in 'normal' electronic technical language, it is 'crystal'.
4 mins
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