[time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812...
Bob Camp
kb8tq at n1k.org
Thu Nov 6 01:45:33 UTC 2014
Hi
Does your board have a chip at U4?
The “normal” boards have U1 but no U4. There may have been two different DAC’s for these boards.
Bob
> On Nov 5, 2014, at 6:29 PM, Arthur Dent <golgarfrincham at gmail.com> wrote:
>
> Could someone who has both the REF 0 and REF 1 units check
> to see if the REF 0 unit has U1 missing. U1 is an AD7849
> serial input, 14-Bit/16-Bit DAC on my REF 1 units but is
> missing on an old REF 0 I just dug out of the to-do pile.
> Someone may have already mentioned this and I missed it.
>
> -Arthur
>
> http://www.analog.com/en/digital-to-analog-converters/da-converters/ad7849/products/product.html
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