Re: [volt-nuts] vSolartron7081 rom reading (m k)
The zener token value is written on the lower right PCB in the rear right hand corner. Dave -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of Bill Ezell Sent: 18 January 2013 01:21 To: volt-nuts@febo.com Subject: Re: [volt-nuts] vSolartron7081 rom reading (m k) BTW, make absolutely sure you save the Zener current token value somewhere safe. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
Re: [volt-nuts] vSolartron7081 rom reading
Good luck on the key. Someone in Italy (IIRC) was able to do from the pictures. Yes, I made it myself, used a dremel on a brass plate, I still havent made it duplicated it in a real shop, I'm using with a 7061, it's the same key than the 7081. m k if you need a copy I can try to have it duplicate ina a shop and send one to you. Fabio. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
Re: [volt-nuts] vSolartron7081 rom reading (m k)
BTW, make absolutely sure you save the Zener current token value somewhere safe. The rest of the cal constants can be recovered with some good calibration standards, but the Zener value takes some pretty specialized calibration. I think the performance of the 7081 is really phenomenal given that the reference is a non-ovenized Zener. It gets this by individually setting the Zener current to the value that gives the minimal voltage change for temperature change, then injecting a 2nd-order correction factor. The moral of this story is that the current token setting is specific to the Zener, and you'd need a good temperature-controlled chamber and a lot of time to replicate. -- Bill Ezell -- They said 'Windows or better' so I used Linux. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
Re: [volt-nuts] vSolartron7081 rom reading
I have a key, so if the locksmith can't make one to match the lock, I can get one cut. I am in UK. D. -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of m k Sent: 16 January 2013 07:39 To: volt-nuts@febo.com Subject: Re: [volt-nuts] vSolartron7081 rom reading 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 ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
Re: [volt-nuts] vSolartron7081 rom reading
You need to issue OUT,RS232,ON first, otherwise you won't see it the output Regards, David Partridge -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of m k Sent: 16 January 2013 08:02 To: volt-nuts@febo.com Subject: Re: [volt-nuts] vSolartron7081 rom reading Hi Charlie, partial success, calibrate,refresh worked, the display told me so, but the calibrate,dump command did not do anything visible. M K Date: Tue, 15 Jan 2013 18:08:02 -0800 From: cbl...@centurytel.net To: volt-nuts@febo.com Subject: Re: [volt-nuts] vSolartron7081 rom reading MK, All you need to do is unplug the jones plug where the key wiring goes to the circuit board. No need to do any wiring! Charlie On 1/15/2013 5:00 PM, J. L. Trantham wrote: 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-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of m k Sent: Tuesday, January 15, 2013 4:30 PM To: volt-nuts@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.partri...@perdrix.co.uk To: volt-nuts@febo.com Date: Sun, 13 Jan 2013 17:14:07 + 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-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of m k Sent: 13 January 2013 16:57 To: volt-nuts@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 ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
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.partri...@perdrix.co.uk To: volt-nuts@febo.com Date: Sun, 13 Jan 2013 17:14:07 + 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-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of m k Sent: 13 January 2013 16:57 To: volt-nuts@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 ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
Re: [volt-nuts] vSolartron7081 rom reading
Thanks for that, I thought someone had once said that would work, but until I know it better I have been trying to change it as little as possible. Regards, M K Date: Tue, 15 Jan 2013 18:08:02 -0800 From: cbl...@centurytel.net To: volt-nuts@febo.com Subject: Re: [volt-nuts] vSolartron7081 rom reading MK, All you need to do is unplug the jones plug where the key wiring goes to the circuit board. No need to do any wiring! Charlie On 1/15/2013 5:00 PM, J. L. Trantham wrote: 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-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of m k Sent: Tuesday, January 15, 2013 4:30 PM To: volt-nuts@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.partri...@perdrix.co.uk To: volt-nuts@febo.com Date: Sun, 13 Jan 2013 17:14:07 + 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-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of m k Sent: 13 January 2013 16:57 To: volt-nuts@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 ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
Re: [volt-nuts] vSolartron7081 rom reading
Going from memory, no, you have to pull the roms and read them. At least, that's what a few of us in the group have done. You can access ram and nvram, though. -- Bill Ezell -- They said 'Windows or better' so I used Linux. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
Re: [volt-nuts] vSolartron7081 rom reading
Actually, I believe that the MONITOR command will allow you look at storage anywhere within the address space of either of the processors, see pages 8.1 through 8.5 of the service manual. So it should be possible to READ the ROMs this way if both processors are working and communicating. However it would be pretty slow, and as all the ROMs are socketed, it's not a big deal to just remove them and read them in a programmer. Note that I haven't tried this. Regards, David Partridge -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of Bill Ezell Sent: 13 January 2013 13:28 To: volt-nuts@febo.com Subject: Re: [volt-nuts] vSolartron7081 rom reading Going from memory, no, you have to pull the roms and read them. At least, that's what a few of us in the group have done. You can access ram and nvram, though. -- Bill Ezell -- They said 'Windows or better' so I used Linux. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
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 From: david.partri...@perdrix.co.uk To: volt-nuts@febo.com Date: Sun, 13 Jan 2013 16:36:52 + Subject: Re: [volt-nuts] vSolartron7081 rom reading Actually, I believe that the MONITOR command will allow you look at storage anywhere within the address space of either of the processors, see pages 8.1 through 8.5 of the service manual. So it should be possible to READ the ROMs this way if both processors are working and communicating. However it would be pretty slow, and as all the ROMs are socketed, it's not a big deal to just remove them and read them in a programmer. Note that I haven't tried this. Regards, David Partridge -Original Message- From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of Bill Ezell Sent: 13 January 2013 13:28 To: volt-nuts@febo.com Subject: Re: [volt-nuts] vSolartron7081 rom reading Going from memory, no, you have to pull the roms and read them. At least, that's what a few of us in the group have done. You can access ram and nvram, though. -- Bill Ezell -- They said 'Windows or better' so I used Linux. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
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-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On Behalf Of m k Sent: 13 January 2013 16:57 To: volt-nuts@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 ___ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
