Re: Re: Battery for RCM6700

I haven't calculated the life for your hardware. In my app using the OP7200
and the battery I mentioned I calculated the life at > 15 years. My real
intent was to keep the end user from ever opening the instrument.

bob

On Thu, Aug 16, 2012 at 7:45 PM, Phil D <[email protected]> wrote:

>
>
> I do recall the manual saying something about cycling the power to get
> better RTC current draw performance,
> 5 years is a long time to want the RTC to survive is a rechargeable 3V not
> an option is it realistic that the product will be un-powered for this
> period and require the correct time? as this is a network device NTC may be
> a possibility to explore
> I use a 3V lithium ion that i calculated as 72 days RTC time which is
> suitable for my application as real time isn't essential
>
> Phil
>
> On 16 August 2012 20:39, Moore, Robert <[email protected]> wrote:
>
>> **
>>
>>
>> I noticed somewhere in the 6700 manual a REQUIREMENT that you cycle power
>> to the 6700 AFTER attaching the battery. This affects  the drain on the
>> battery . . .
>>
>> bob
>>
>>  On Thu, Aug 16, 2012 at 1:45 PM, seecwriter <seecwriter-/[email protected]>wrote:
>>
>>>  That's not a bad choice. But it's half the capacity I need for a
>>> 5-year life, unless I'm over thinking this.
>>>
>>> We may have to go to a separate time-of-day clock device that uses
>>> far less current than the RCM6700's 120ua in order to get the life
>>> span we want with a reasonable size battery.
>>>
>>> Steve
>>>
>>> --- In [email protected], "Moore, Robert" <robert_moore@...>
>>> wrote:
>>> >
>>> > On the OP7200 I used a AA 3.6 VDC lithium battery (Saft LS14500CBA or
>>> > equivalent) accessible from the outside of the instrument case using a
>>> > Bulgin 122-BX0011/1 . . .   I'm assuming the RCM6700 has the same
>>> pinout
>>> > for this.  My biggest concern was to keep the end-user from opening the
>>> > instrument.
>>> >
>>> > bob
>>> > --
>>> > Robert K Moore, PhD
>>> > Designer, Macular Metrics
>>> > Robert_Moore@...
>>> > 401-226-6888
>>> >
>>> >
>>> >
>>> >
>>> > On Thu, Aug 16, 2012 at 12:31 PM, seecwriter <seecwriter@...> wrote:
>>> >
>>> > > The battery current draw for the RCM6700 seems rather high,
>>> requiring a
>>> > > large battery to maintain the clock for 5-years.
>>> > > Can anything be done to reduce the battery current? I'm just rying to
>>> > > maintain the time-of-clock.
>>> > > What have others done for a battery?
>>> > >
>>> > > Steve
>>> > >
>>> > >
>>> > >
>>> > > ------------------------------------
>>> > >
>>> > > Yahoo! Groups Links
>>> > >
>>> > >
>>> > >
>>> > >
>>> >
>>>
>>>
>>>
>>>
>>> ------------------------------------
>>>
>>> Yahoo! Groups Links
>>>
>>>
>>>
>>>
>>
>>
>> --
>> Robert K Moore, PhD
>> Designer, Macular Metrics
>> [email protected]
>> 401-226-6888
>>
>>
>
>
> 




-- 
Robert K Moore, PhD
Designer, Macular Metrics
[email protected]
401-226-6888