[time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812...

Bob Camp kb8tq at n1k.org
Wed Nov 5 21:16:21 EST 2014


Also missing on both the Ref-1 and Ref-0 in the same vicinity (only on the back):

U20 (might be U2?0)

Also of note:

U207 (alarm opto isolator) is present on Ref-0 and missing on Ref-1.


> 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
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

More information about the time-nuts mailing list