[time-nuts] Lucent RFTG-m-XO
David I. Emery
die at dieconsulting.com
Fri Feb 2 16:17:56 EST 2007
On Fri, Feb 02, 2007 at 10:07:45AM -0600, Jason Rabel wrote:
> The Motorola's expect an antenna to draw power within a certain range. It's
> possible that they simply shunted that current to keep the false-alarms to a
> minimum and used power from the secondary board and allow a wider range of
> current draw, maybe not even monitoring the current.
There is a 4 input 8 bit A/D chip on the mezzanine board as well as
a 16 bit A/D chip present only on the mezzanine boards of the XOs. It
would seem likely that one port of this chip reads the antenna current
and maybe another the various lamp and temp outputs of the LPRO/OCXO.
Dave Emery N1PRE, die at dieconsulting.com DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in
celebration of what could have been, but wasn't and is not to be now either."
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