[widar-wg] CPCC Battleshort Fixture

[Kevin Ryan]

Hi Sean,

The CPCCs are not common machines and these particular ones come from one source only; as time goes on, we may have difficulty finding drop in replacements.  I'm being overly paranoid.

Kevin

On Jun 22, 2011, at 12:04 PM, Sean Dougherty wrote:

> Kevin,
> 
> Why would the correlator be down for weeks if we lose the CPCC and the
> spare? Isn't it a case of replacing the CPCC and associated software - if
> so, does that take so long? 
> 
> Sean
> 
> 
> -----Original Message-----
> From: widar-wg-bounces at nrao.edu [mailto:widar-wg-bounces at nrao.edu] On Behalf
> Of Kevin Ryan
> Sent: June-22-11 10:31 AM
> To: WIDAR-WG
> Cc: Kevin Ryan
> Subject: [widar-wg] CPCC Battleshort Fixture
> 
> The discussion of CPCC spares prompted me to bring this up. 
> 
> Though it is difficult to imagine how we could lose both CPCCs and the
> spare, the fact of the matter is that, if we do, the EVLA could be off the
> air for weeks.
> 
> A simple 'CPCC bypass' would be RPMIB-cable terminating connectors that are
> hard-wired to cause the boards to be powered up and the rack fans to be set
> to high.  With either set of CPCC cables plugged into these terminators, the
> system would run.
> 
> This should be relatively inexpensive to implement (connectors, +5V power
> supply, panel, Kerry).  
> 
> Does this sound like something we should do?
> 
> Kevin
> 
> 
> 
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