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[time-freq] TADD-2 assembly question

John Koster w9ddd at tapr.org
Thu Jan 14 18:29:49 UTC 2010

I don't have one to check to be sure, but you can use the shell of the
Synch input BNC as a ground reference to see which pin of JP2 is ground,
or conversly F1 should be at 13.8, so you can check which pin has
continuity to it.

On Thu, 14 Jan 2010, Kyle Jamieson wrote:

> Hi all,
> I just picked up a TADD-2 and have a question with assembly.
> Installation of most components and the steps "Initial Test--1",
> "Integrated Circuit Installation -- 1" (as documented in the
> instructions) went smoothly.  Now I am at "Initial Test -- 2" where I
> need to apply 13.8V to JP2.  My question is: in which direction
> (looking at the circuit board right side up sitting on a table) across
> JP2 do I apply 13.8V?  Positive lead on the right hand side pin, or
> left?
> Thanks,
> Kyle
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John, W9DDD

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