Re: Re: Battery for RCM6700
Phil D <[email protected]>
| Newsgroups | gmane.comp.hardware.rabbit-semiconductor |
|---|---|
| Message-ID | <CAL8BBoO5LSbM8GdKR2BB0GqHw0r+GX423v_h7SwM1HfzmUWidg@mail.gmail.com> |
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 > > >