Empathy List Archives

DD

Dr. David Kirkby (Kirkby Microwave Ltd)

Sun, Jan 24, 2016 10:51 PM

On 24 January 2016 at 22:46, Poul-Henning Kamp phk@phk.freebsd.dk wrote:

In message <CANX10hDC=Nq=nv_6pi4mgX53OYtqzCbdvPjGVwrX=
T305G+rFA@mail.gmail.com>
, "Dr. David Kirkby (Kirkby Microwave Ltd)" writes:

Thank you. That is certainly important if that's the case. I can't seem to
find a data sheet on the exact SRAM in my 3457A (Toshiba TC5564PL-15), so
difficult to know.

This one ?

     www.cryptomuseum.com/spy/fs5000/files/TC5564.pdf

That looks like vanilla CMOS RAM, and it has a wide range of
retention VCC, so you should be fine.

No. I had already found that data sheet. My SRAM does not have that extra
"A" in the model - it is a TC5564PL-15 not an TC5564APL-15. I suspect they
are similar, but I don't have any hard evidence to support that assumption.

Dave

On 24 January 2016 at 22:46, Poul-Henning Kamp <phk@phk.freebsd.dk> wrote: > -------- > In message <CANX10hDC=Nq=nv_6pi4mgX53OYtqzCbdvPjGVwrX= > T305G+rFA@mail.gmail.com> > , "Dr. David Kirkby (Kirkby Microwave Ltd)" writes: > > >Thank you. That is certainly important if that's the case. I can't seem to > >find a data sheet on the exact SRAM in my 3457A (Toshiba TC5564PL-15), so > >difficult to know. > > This one ? > > www.cryptomuseum.com/spy/fs5000/files/TC5564.pdf > > That looks like vanilla CMOS RAM, and it has a wide range of > retention VCC, so you should be fine. > No. I had already found that data sheet. My SRAM does not have that extra "A" in the model - it is a TC5564PL-15 not an TC5564APL-15. I suspect they are similar, but I don't have any hard evidence to support that assumption. Dave

AB

Andrea Baldoni

Mon, Jan 25, 2016 3:23 PM

On Sun, Jan 24, 2016 at 07:54:34PM +0000, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:

I've got a HP 3457A 6.5 digit multimeter - S/N 2703A04579. It's working
fine, but I'm aware the battery must be at least 11 years old, as I first
bought the meter 11 years ago. I suspect its due for a change. I'm trying
to find a reputable source for a replacement. I want to avoid eBay, due
to the number of fakes on there.

Hello David.
If the Panasonic replacement is good, you can buy the equivalent Varta
06127201301 from RS (their code is 240-9437).

http://uk.rs-online.com/web/

Best regards,
Andrea Baldoni

On Sun, Jan 24, 2016 at 07:54:34PM +0000, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: > I've got a HP 3457A 6.5 digit multimeter - S/N 2703A04579. It's working > fine, but I'm aware the battery must be at least 11 years old, as I first > bought the meter 11 years ago. I suspect its due for a change. I'm trying > to find a *reputable* source for a replacement. I want to avoid eBay, due > to the number of fakes on there. Hello David. If the Panasonic replacement is good, you can buy the equivalent Varta 06127201301 from RS (their code is 240-9437). http://uk.rs-online.com/web/ Best regards, Andrea Baldoni

DD

Dr. David Kirkby (Kirkby Microwave Ltd)

Mon, Jan 25, 2016 4:52 PM

On 25 January 2016 at 15:23, Andrea Baldoni erm191ba3@ermione.com wrote:

On Sun, Jan 24, 2016 at 07:54:34PM +0000, Dr. David Kirkby (Kirkby
Microwave Ltd) wrote:

I've got a HP 3457A 6.5 digit multimeter - S/N 2703A04579. It's working
fine, but I'm aware the battery must be at least 11 years old, as I first
bought the meter 11 years ago. I suspect its due for a change. I'm

trying

to find a reputable source for a replacement. I want to avoid eBay, due
to the number of fakes on there.

Hello David.
If the Panasonic replacement is good, you can buy the equivalent Varta
06127201301 from RS (their code is 240-9437).

http://uk.rs-online.com/web/

Best regards,
Andrea Baldoni

It is the same general type, but the pinout is wrong. Mine has two radial
pins, not 3. That will not fit.

Dave

On 25 January 2016 at 15:23, Andrea Baldoni <erm191ba3@ermione.com> wrote: > On Sun, Jan 24, 2016 at 07:54:34PM +0000, Dr. David Kirkby (Kirkby > Microwave Ltd) wrote: > > > I've got a HP 3457A 6.5 digit multimeter - S/N 2703A04579. It's working > > fine, but I'm aware the battery must be at least 11 years old, as I first > > bought the meter 11 years ago. I suspect its due for a change. I'm > trying > > to find a *reputable* source for a replacement. I want to avoid eBay, due > > to the number of fakes on there. > > Hello David. > If the Panasonic replacement is good, you can buy the equivalent Varta > 06127201301 from RS (their code is 240-9437). > > http://uk.rs-online.com/web/ > > Best regards, > Andrea Baldoni > It is the same general type, but the pinout is wrong. Mine has two radial pins, not 3. That will not fit. Dave

AB

Andrea Baldoni

Mon, Jan 25, 2016 7:10 PM

On Mon, Jan 25, 2016 at 04:52:56PM +0000, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:

It is the same general type, but the pinout is wrong. Mine has two radial
pins, not 3. That will not fit.

Sorry, I understand now it's a 2/3A, much bigger.

The original LX1634 (LX16/34) is a Li-SO2, 850mAh, 2.8V nominal, 3V open
circuit. Current SAFT model is "G 32/3".

Here is the datasheet

http://www.saftbatteries.com/force_download/G_323.pdf

I saw the code "G 32/3.4" should point to the version with PCB pins, but I
wasn't able to find the original datasheet and any EU source.

If you can accept to change the chemistry to a Li-MnO2, you can use the Varta
06237501301 from the supplier I suggested. This is a 2/3AA, same height,
thinner, with radial leads like a capacitor, so you should find the way to fit
it.

Another idea could be use a holder and put a (very easy to find everywhere)
CR123A.

Best regards,
Andrea Baldoni

On Mon, Jan 25, 2016 at 04:52:56PM +0000, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: > It is the same general type, but the pinout is wrong. Mine has two radial > pins, not 3. That will not fit. Sorry, I understand now it's a 2/3A, much bigger. The original LX1634 (LX16/34) is a Li-SO2, 850mAh, 2.8V nominal, 3V open circuit. Current SAFT model is "G 32/3". Here is the datasheet http://www.saftbatteries.com/force_download/G_323.pdf I saw the code "G 32/3.4" should point to the version with PCB pins, but I wasn't able to find the original datasheet and any EU source. If you can accept to change the chemistry to a Li-MnO2, you can use the Varta 06237501301 from the supplier I suggested. This is a 2/3AA, same height, thinner, with radial leads like a capacitor, so you should find the way to fit it. Another idea could be use a holder and put a (very easy to find everywhere) CR123A. Best regards, Andrea Baldoni

volt-nuts@lists.febo.com

Wanted - UK source of a replacement battery (type LX 1634) for HP 3457A 6.5 digit multimeter