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SAR V3 Calibration

PostPosted: Sat Jul 24, 2010 9:24 pm
by HansR
I have been trying to calibrate the Voltage Reference.
[*]I disconnected the temp wire
[*]In PROGRAM>>CHARGER>>OP MODE? I put AUTO? on FALSE
[*]Put FLOAT? on TRUE
[*]Then went into PROGRAM>>CHARGER>>VALUES>>CALIBRATE?
[*]Tried to DOWN the existing value of 14.3 to 13.60 (the setting of FLOAT), but nothing happens.
What am I doing wrong?
Your advice will be greatly appreciated.

HansR

Re: SAR V3 Calibration

PostPosted: Mon Jul 26, 2010 10:53 am
by Coulomb
The Emon functions you are attempting only work with the V1 and V2 regulators.

Equalization with the V3 is done using just the V3, not the Emon.

Re: SAR V3 Calibration

PostPosted: Mon Jul 26, 2010 8:53 pm
by HansR
Hi Coulomb,
Thanks for this, but I think you misread my question.

It wasn't about equalization, but about setting the voltage reference. It did have one effect: the voltage shown on Emon is now about 0.7V to 0.8V too high, when compared with a direct reading off the batteries.

Cheers
HansR

Re: SAR V3 Calibration

PostPosted: Tue Jul 27, 2010 2:24 pm
by Coulomb
That amount of error on the Emon is symptomatic of a missing ground. Either the digital ground or the analog ground on TB1 of the Emon. They both need to be connected together at negative distribution.