[volt-nuts] vSolartron7081 rom reading

[m k]

Hi Joe,

I am in the UK near Guildford. But give me time to get to the locksmith at the weekend first. 
And I am going to try just unplugging the cal key too.

Regards,

M K

> From: jltran at att.net
> To: volt-nuts at febo.com
> Date: Tue, 15 Jan 2013 19:00:57 -0600
> Subject: Re: [volt-nuts] vSolartron7081 rom reading
> 
> MK,
> 
> Where are you?  If you can't get a key made, I can probably send you one.  
> 
> IIRC, you can 'activate' the key by removing a wire from the key switch.
> That places it in 'CAL' mode.  The schematic easily demonstrates this.  I
> don't think it was 'shorting' the two switch wires.  Of course that requires
> you to remove the top of the meter.
> 
> Joe
> 
> -----Original Message-----
> From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
> Behalf Of m k
> Sent: Tuesday, January 15, 2013 4:30 PM
> To: volt-nuts at febo.com
> Subject: Re: [volt-nuts] vSolartron7081 rom reading
> 
> 
> 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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