[volt-nuts] vSolartron7081 rom reading

[m k]

I just noticed a gotcha, I need to set the key to calibrate before I may issue those commands, I guess I need a key. I have printed off the photo and measurements someone on this board did, now to get to a key shop...

M K

> From: david.partridge at perdrix.co.uk
> To: volt-nuts at febo.com
> Date: Sun, 13 Jan 2013 17:14:07 +0000
> Subject: Re: [volt-nuts] vSolartron7081 rom reading
> 
> If all you want is to save the calibration factors, just issue CALIBRATE,DUMP command
> 
> To refresh the EAROM calibration factors, issue CALIBRATE,REFRESH - barring component failure that should be good for another ten years or so.  You can also display the NVM contents with the MONITOR command, but NOT re-write them.
> 
> The only way that I am aware of that will write the caibration constants if they have been lost is to run a full calibration.
> 
> Again all this in chapter 8.
> 
> I don't know which ROM programmers that can read or write the ER3400 (just ignorance - there may be loads).
> 
> 
> Regards,
> David Partridge
> -----Original Message-----
> From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On Behalf Of m k
> Sent: 13 January 2013 16:57
> To: volt-nuts at febo.com
> Subject: Re: [volt-nuts] vSolartron7081 rom reading
> 
> 
> Hi David,
> 
> well it is currently working and close to calibrated as far as I can tell. But I want to get those calibration factors saved before it dies on me. Last calibrated 2008, and well down on drift by now.
> 
> I get a diurnal 0.14 microvolt drift with a shorting plug that stays on when not in use. a drift of about 0.1 microvolts in about 3 weeks. Nothing else to confirm anything else as I have only just got it chatting out through the rs232.
> 
> I will have to buy something to read them with.
> 
> M K 
> 
> 
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