Fabio,
I uploaded the EPROM contents from my meter to Didier's site as well. The
Floating board I have has 'AA' version firmware while yours is 'CA'. Mine
uses TMS2516 chips that are 24 pin and I think yours are 2764 28 pin chips.
I'll investigate the statistics function after I make sure it is 'in range'
as far as the calibration goes.
I don't understand 'SP1 and SP2 on floating board are both open circuit'.
To what does this refer?
Thanks.
Joe
-Original Message-
From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On
Behalf Of Fabio Eboli
Sent: Monday, June 25, 2012 10:54 AM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] 7061 On Board Clock and Battery
Interesting, these roms are mine's:
http://www.ko4bb.com/Manuals/04)_ROM_Images_and_Drivers/Solartron_7061_ROMs.
zip
I have also a problem with statistics,
seem that the standard deviation calculation is
wrong:
http://www.febo.com/pipermail/volt-nuts/2012-April/001793.html
If you have time to test yours for this I would be grateful.
Another thing is that on mine SP1 and SP2 on floating board are both
open circuit.
Fabio.
J. L. Trantham jlt...@att.net ha scritto:
Fabio,
Thanks for the link to the pictures. I never seem to remember eevblog
when
it comes to looking for stuff.
Your pictures show that your Earthy board is completely different from
mine
in the area of 'B101'. You have no place for B101. Also, your Floating
board is different in that you have the 'CA' firmware and 28 pin EPROM's.
I
wonder if anyone has modified my 'version' of the Floating board to use 28
pin EPROM's and if there would be any utility to doing this.
I did not get a message directly from you (that I recognized at least).
I'll try to send you one directly to make sure we can 'establish
communications'.
Joe
-Original Message-
From: volt-nuts-boun...@febo.com [mailto:volt-nuts-boun...@febo.com] On
Behalf Of Fabio Eboli
Sent: Monday, June 25, 2012 5:14 AM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] 7061 On Board Clock and Battery
Here are some pics of the mine, only one battery:
http://www.eevblog.com/forum/product-reviews-photos-and-discussion/solartron
-7061-help-and-come-photos/msg93650/#msg93650
As for the manual I did try to contact you directly,
did you read the message?
Fabio.
J. L. Trantham jlt...@att.net ha scritto:
My 7061 has a single battery installed, B501, a 3.6 V Ni-MH
Rechargeable 3 pin battery. My 7081 has two batteries installed, the
same 3.6 V Ni-MH Rechargeable battery and a ½ AA Lithium Battery that
serves as the onboard clock backup battery. It is connected with its
negative pin to a 47K resistor to ground and its positive pin to a
diode that feeds a connection that is also fed by another diode from
the main power supply. The common connection of these diodes feed the
clock chip.
On my 7061 there is a location, B101 that appears to be for the same
type ½ AA Lithium Battery. The + pin connects to a diode, in a manner
similar to that described above, and the pin connects to a space
for a resistor, R117, with the other end of the resistor going to
ground. Both the battery, B101, and the resistor, R117, are missing.
My questions are:
1. Does anyone have a 7061 with this battery and resistor installed?
2. If so, what is the value of the resistor, R117, and what type is the
battery?
It seems that this would be an easy addition to get a live clock
without the need to restart the clock each time the meter is turned
on. Or, perhaps there is a reason why this in not a good idea.
Thanks in advance.
Joe
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