[volt-nuts] Reading out Calibration data from Datron/Wavetek 4808?

[Daniel Mendes]

I know this is common knowledge but it doesn´t hurt to remember... your 
soldering iron / station is usually grounded so it will short the pin to 
ground while soldering. When I do soldering in an energized circuit i 
heat the station then unplug it from wall when soldering.

Daniel


Em 06/02/2018 07:17, David C. Partridge escreveu:
> I really need to change the memory retention battery in my 4808.
>
> What I intend is to use a small floating PSU with a blocking diode to supply
> just under the battery voltage to the memory circuit, then unsolder and
> replace the battery.
>
> However mistakes do happen, so does anyone know of a way to read the
> contents of the Calibration RAM (and to restore in case of disaster)?
>
> Has anyone ever been down the FRAM route?  The existing RAM is a TC5564PL
> (8k x 8) so a FM1608 may well work fine...
>
> Thanks
> Dave Partridge
>
>
>
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