[volt-nuts] Solartron 7061 ROM and behaviour questions (was help request (eeprom?))

[David C. Partridge]

>SP1:2716 SP2:2732/64, the instrument mounts 2764 roms and the 
>corresponding jumper SP2 is full of solder,
>but not jumped correctly, SP1 is not soldered.

SP2 should be jumpered with solder for 2764 ROMS, and SP1 should be open circuit.

So that is correct.

Dave
-----Original Message-----
From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On Behalf Of Fabio Eboli
Sent: 03 March 2012 13:29
To: volt-nuts at febo.com
Subject: [volt-nuts] Solartron 7061 ROM and behaviour questions (was help request (eeprom?))

Hello everybody,
I've some questions for who has the solartron 7061 and/or can help:
1- behaviour: is it normal to have measurement "noise" on last digit?
measuring a lithium battery and a geller labs voltage source i get the reading jumping usually +-3 +-4 counts on last digit, less frequently
6-7 digits or 1-2 digits. Range 10V, 7 digits, filter on.
2- ROM: I tried download ROMs content. I don't trust the (willem) programmer I used, since it's from a friend of mine and I don't have experience with it.
I'd like to verify the ROMs content I download if are correct.
Now on the labels there is the model number and a 4 alphanumeric code, is this checksum? What kind of algorithm should it be?
3- Jumper config: I noted a strange thing, that maybe is non significant, on the side of IC804 rom on analogue board there are soler-jumpers SP1 and SP2 marked
SP1:2716 SP2:2732/64, the instrument mounts 2764 roms and the corresponding jumper SP2 is full of solder, but not jumped correctly, SP1 is not soldered.
Should this jumper be solder-closed?

Thanks,
Fabio.

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