oliverg
Joined: 15 May 2007
Posts: 800
Location: Melbourne, Australia
TV/Projector: Sony G90 X2 - Vidikron Vision 1
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| Posted: Tue Oct 30, 2007 11:24 am Post subject: Dallas Chip |
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This came in earlier - it may be of interest to Sony G90 users
From: hp_agilent_equipment@yahoogroups.com
[mailto:hp_agilent_equipment@yahoogroups.com] On Behalf Of paul.messick
Sent: Tuesday, 30 October 2007 1:31 PM
To: hp_agilent_equipment@yahoogroups.com
Subject: [hp_agilent_equipment] Re: Is there life in the old RAM yet?
I worked at Dallas Semi back in the early days, when the original DS1235 was
made. We
found that, given the currents involved and the amount of energy in the
lithium batteries
used, that the battery backup would last far more than 10 years. But no one
would have
believed a datasheet that said 40 year life, so we used a more sedate 10
year spec.
Unless you've been storing the scope in some sort of hostile environment you
can expect
the memory to last much longer than your interest in using the gear...
Paul
--- In hp_agilent_equipment@yahoogroups.com, Joe McElvenney <ximac@...>
wrote:
>
> Hi,
>
> The DS1235Y non-volatile RAM in my scope (HP54502A) is 17 years
> old. The data sheet for the Maxim DS1230Y replacement gives a
> minimum of 10 years power-off retention. How much longer do you
> reckon I have?
>
>
> Cheers - Joe
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