HI They are still processing my request (it takes time), in the meantime I have an idea. Suppose that each ups voltage measurement could have some measurement error. It could be used to correct some minor measurement errors for any ups, but also could be used in the cyberpower case
Let's introduce a calibration polynomial like Ucalibrated = c0 + c1 * U + c2 * U^2 + ... cn * U^n This will allow practically any type of conversion including high-order nonlinearities. in the config file we enter first n coefficients of the polynomial, the rest c are considered as zero. In cyberpower case it is c0 = 0, c1 = 1/1.53 Ucalibrated = 0 + 0.6536 * U and this would be defined as ups.conf like voltage.calibration = 0 0.6535 So everybody can calibrate his own ups battery measurement make the polynomial fit and just enter the coefficients in ups.conf or just use recommended values for some models that are know to have systematic error what do you say? Best regards, Davor On 4/8/08, davor emard <[EMAIL PROTECTED]> wrote: > I guess it's tied to vendor/product id probably all models e.g. > 400/600/800 differ only in battery capacity and run the same > firmware but I will ask them > > On 4/8/08, Arjen de Korte <[EMAIL PROTECTED]> wrote: > > > I just got reply from Cyberpower R&D department about the battery > > > voltage correction formulae > > > > > >> responsibility of the vendor (CyberPower). If someone provides me with > > >> the > > >> correct conversion values, I'm willing to include this in the > subdriver. > > > > > > Our software group provided the following > > > > > > Battery voltage = (Hid battery voltage) / 1.53 > > > for example: > > > 21.3 /1.53 = 13.9 (measured 13.6) > > > > > > Note, the tolerance is possible for each unit of UPS. > > > > It is not clear to me what the line above means. Do they mean all units of > > the same model, or all CyberPower devices with ProductID=0x0501. We can > > only do this in the latter case since the device provides no information > > about the model, so all we can work with are VendorID and ProductID. > > > > Best regards, Arjen > > > > > _______________________________________________ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
