[evlatests] Correlator outage tomorrow

[Ken Sowinski]

On Mon, 22 Aug 2011, Jim Jackson wrote:

> The question came up in the Coordination Meeting about the status of
> the 128 MHz clock to the WIDAR during the outage tomorrow.  While the
> work is going on in the central racks and on the timecode fiber,
> assume that the 128 MHz will also be missing for long periods of
> time. I don't think this causes any risk to the WIDAR but we were
> asked to let everyone know. Of course, everything will need to be
> restarted after clock and timecode are restored.

Right.  The crossbar boards will detect the loss of external
128 MHz and substitue a 'local' clock for it so the station
boards do not suddenly stop clocking.