Hi Also missing on both the Ref-1 and Ref-0 in the same vicinity (only on the back):
U20 (might be U2?0) R212 U205 Also of note: U207 (alarm opto isolator) is present on Ref-0 and missing on Ref-1. Bob > On Nov 5, 2014, at 6:29 PM, Arthur Dent <golgarfrinc...@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@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
