Thanks for the feedback Lincoln! We've also had difficulties with this and flagged the issue with Mo just yesterday. He's going to measure the boxes he's got in stock and then we'll have to duke it out with Allfab.
Jason On 01 Aug 2013, at 22:53 , Lincoln Greenhill wrote: > > In field deployment of the LEDA > correlator over the last week, > we encountered significant difficulty > stacking our 16 ROACH2s (rev2) in 16U. > > We measured the ROACH2 enclosure > dimensions and found that they are not > to EIA specification: > > 1U == 1.75" = 44.45 mm > 1U frontplate = 44.45 mm > 1U chassis = 43.66 mm > Screw pattern 5/8" 5/8" 1/2" > > We found: > > ROACH2 = 44.48 mm front plate > 44.49 mm body > > The ROACH2 rev2 faceplate is correct > or close to correct, but the enclosure > definitely is 0.82mm too tall. In > the end, we were forced to leave gaps > every fourth ROACH and were fortunate > that by chance our v. tight racking plan could > accommodate this. > > Have others in CASPER had difficulty > stacking ROACH2 (rev2) enclosures > (1U per systen)? > > We think that Rurik and Jonathan > have not had difficulty w/ ROACH2 > (rev1). > > > Best, > Lincoln (+ Jonathon, Danny, and Ben) > > > -- > Lincoln J. Greenhill Harvard-Smithsonian CfA > Office: 1 617-495-7194 60 Garden St, Mail Stop 42 > Cell: 1 650 722-7798 Cambridge, MA 02138 > FAX: 1 617-495-7345 [email protected] > Skype: ljgreenhill www.cfa.harvard.edu/~lincoln >
