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Re: [tracker2] Re: Config selection local only...

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  • Scott Miller
    Hi James, Proto E didn t have it, and it s not on the schematic. You re right, shorting R4 ought to help. Scott
    Message 1 of 13 , Feb 24, 2009
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      Hi James,

      Proto E didn't have it, and it's not on the schematic. You're right,
      shorting R4 ought to help.

      Scott

      James Ewen wrote:
      >
      >
      > On Mon, Feb 16, 2009 at 7:00 PM, Scott Miller <scott@...
      > <mailto:scott%40opentrac.org>> wrote:
      >
      > > There's a very small (0402 size) resistor on the bottom of the OT2m, not
      > > marked. Desolder that and it'll boost the output level. It's the only
      > > component on the bottom side, and you can locate it by feel - that and
      > > the crystal leads are the only protrusions.
      >
      > Hmm, I pulled the PCB out of the case, and find no components on the
      > bottom. This is an OT2m Proto E... Is that your current production
      > unit, or is there another one out now?
      >
      > However, looking at the schematic, I'm thinking that you are talking
      > about R4 (100K), which the HI output jumper modifies by putting R3
      > (30K) in parallel, which would take you down to about 23K with the
      > jumper installed. A jumper shorting out R4 would look to be a way to
      > gain some output level.
      >
      > James
      >
      >
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