Re: 2465B battery

Chuck Harris

If you have a real 2465 DMS, no, it uses an EAROM.

If you have a 2465A DMS, or a 2465B DMS, it has either
a LTC-7P cell, or a Dallas NVRAM.

All you have to do is look at the right side of the
scope, where the A5 controller card lives. You will
either see a Dallas NVRAM in its large black epoxy
DIP package, or you will see a battery in a large black
plastic DIP package... or, if a 2465, you will see nothing.

-Chuck Harris

Tony Fleming wrote:

Does mine 2465DMS have also a battery? Where is it? Thanks.

On Fri, May 31, 2019 at 11:23 AM Bob Koller via Groups.Io <testtech=> wrote:

You are correct, that the SMD control boards B05+, have the Dallas chip.
The earlier boards, and the 2465A, use a Keeper LTC-7P battery. These are
virtually never bad, I don't think I have had to replace more than one or
two, in the many dozens of scope I have repaired over the years. You can of
course replace if you want, but would loose the cal constants unless you
tag another battery with current limit resistor across whilst swapping. I
have done this many times with other instruments.

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