Date: Thu, 30 Jun 2005 13:36:43 -0400 (EDT) From: Dan Edmunds Subject: Sign off and Testing of PP PFC ATC, ADF Racks Hello, This note has three sections: sign off on ATC and BLS Cable Transition system testing of the production: ATC cards, Pleated Foil Cables, and Patch Panel cards what I would like done next wrt ADF Racks on the sidewalk Sign off on ATC and BLS Cable Transition system We have checked the Channel Link Signals through the ATC card with a week of bit level error testing spread over all 3 Channel Link outputs and see no problems. Jason did this work. We have checked the analog signal path through the Patch Panel Pleated Foil Cables and ATC and see no problems. Jason and Jorge did this work and will present a detailed summary of these tests at a Tuesday meeting. We have checked the SCLD signal path through two ATC cards at D-Zero and see no problems. As far as I know, production of all the components should take place. Testing of the production: ATC cards, Pleated Foil Cables, and Patch Panel cards I don't know much about this topic but I think that there is an effort underway to make "tester cards" so that the production run quantities of: Patch Panel cards, Pleated Foil Cables, and ATC cards may be tested with the GlenAir continuity-shorts tester. My concern is that this effort at making special "tester cards" is distracting a number of people from other work that needs to get done. I very much believe in testing individual components before they are installed in the full system, but instead of making special "tester cards" and using the GlenAir tester, I would like to offer that MSU will test all of these components. We would do this here at D-Zero out on the sidewalk. Jorge would do most of this work. Instead of making a DC short/open GlenAir test, we will make a test a the actual operating frequency by using signals from the "TWG" Test Waveform Generator with the adaptor box that allows 32 of these test signals to be plugged into a Patch Panel at a time. Tests would be made at 3 frequencies (below, at, and above the operating frequency) and the resulting signal that arrives at the ADF-2 card is measured at the 1% level. All of the equipment to do this testing is on its way to D-Zero right now and (depending on the I94 traffic) I expect to have it running on the sidewalk by this evening. Jorge is now moving to Fermi and can start this testing work as soon as the production run Patch Panel, Pleated Foil Cable, and ATC cards arrive at D-Zero. These components could be tested and then labeled and stored in the same sets as will be installed this fall. What I would like done next wrt ADF Racks on the sidewalk. I want to start running full crates of ADF-2 cards out on the sidewalk. We have done this at MSU but not so far here at Fermi. I think this is an important step. I'm very hesitant to install lots of cards in the ADF crates until the mechanical work is finished in these racks. It is stupid to put cards at risk while mechanical work is still being done. Just this morning we found a 1 inch 1/4-20 bolt down in a Wiener crate fan tray. If that crate had been full of cards we could have damaged two of them. I believe that the ADF crates out on the sidewalk still need to be pulled out of their racks again so that all of the mechanical cable support components can be installed. I have seen drawings and proto types of the Pleated Foil Cable support mechanical parts. I don't know if these same cable support parts hold the Channel Link cables. The "back of the back plane" card file mechanical parts to hold the ATC cards have been installed in all 4 of the ADF crates this week. It is very encouraging that people have taken the cables support problems and connection issues into the ADF crate backplane so seriously. The people working on this have found nice solutions to all of these difficult problems. If everyone agrees then I would like to ask that things move forward to install these mechanical parts into the ADF Racks on the sidewalk and complete all other mechanical work that will be done to these racks. I hope that by stopping the design and assembly work of the special GlenAir tester cards it will free up people to concentrate on finishing the ADF rack mechanical work. Thank you all, Dan