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calibration_fe1 [2017/11/27 17:04] acqilc [Injection] |
calibration_fe1 [2021/07/10 23:21] (current) |
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* Tous les canaux allumes + cable d'injection (737974) | * Tous les canaux allumes + cable d'injection (737974) | ||
* mean ~ 474 | * mean ~ 474 | ||
- | * RMS ~ 1.1 | + | * RMS ~ 2.5 cx bruyants 3.3 |
- | Threshold= 474+5*1.1 ~ 480 | + | Threshold= 474+5*3.3 ~ 491 |
On essaie on doit mettre **496** | On essaie on doit mettre **496** | ||
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+ | Si on regarde la calibration cela nous donne | ||
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+ | **VTH (mV)= (496-474)/0.1743 = 126 mV** | ||
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+ | mais la calibration n'est pas sur un canal mais sur les 2 cotes | ||
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+ | donc **seuil minimal ~ 63 mV ou fC** | ||
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+ | Pas si eloigne que ca des 50 fC prevus | ||
==== Injection ==== | ==== Injection ==== |