Date Created: Friday, July 29, 2005 5:25:21 AM CDT Date Saved: Friday, July 29, 2005 5:58:16 AM CDT Category - Topic - sequence number: Trigger/Log - Trigger_Log - 433485 Operator(s): Alan Stone Keyword(s): :TRIGGER: I did not get as far as I would have liked on setting up the patch panel assemblies and routing the cables. I mounted the foam on the cable latches for eight patch panels, and then took them to the sidewalk for mounting. There are currently 12 patch panels installed in three racks. However, racks S105 and S107 are not perfectly straight. I could attach the bottom-most patch panel with screws on both side rails, but not for the others. The hole alignment is off by about 1/8th of an inch. For the higher panels, I used both mount points on one side to keep it from sagging. I used a couple of cable ties, but found it unsatisfying. Note: One of the patch panels is missing a post to which one mounts the patch panel cards (PPCs). The edges and corners on the patch panels need some rubber coating, so the users do not end up with scars on their hands and lower arms. You have to get on your hands and knees to install the patch panels at the bottom, and I could imagine bumping my head against a sharp corner. I raided Jorge's box of tested components, taking out all of the PPCs, and mounting them to the patch panels following the labelling scheme: 021-030. The latter was already being used in rack S106. Note: I disconnected the pleated foil cables (PFCs) from PPC030, and move the card down two panels. PPC026 now occupies that space. The PFCs are still disconnected. I was planning on routing them as with the others, but... well see below. You need to take care about placing the monitor connectors into the groove of the patch panel. The monitor connectors are not always perfectly aligned on the PPC, and the machining of the panels provides a tight fit. I used a flat head screwdriver that was slightly too big for the small screws used to mount the PPCs to the patch panel posts. This way, I could not overtighten and possibly crack the card, as the screwdriver would slip out of the screw groove if too much torque was applied. I am only able to account for 24 PPCs. 20 are on the sidewalk mounted to the patch panels. 3 were found to have a channel problem with the MSU testing procedure (I have one in hand, and John Fogelsong has the other two). 1 is currently at MSU. We should have 25, so I will need to ask around. Next, I went to raid the pleated foil cables from Jorge's box, and then take another 20 from the box of PFCs tested by Rahmi and Cosmin (31 were tested and found to be good). However, I only found 6! I went ahead and labelled them (PFC061-PFC066), and set them with box of tested components. I want to the PFC cable routing in one go, and I need 40, but only have 26. I am guessing the Jorge used the previously tested PFCs in for the MSU system tests (1 PPC + 2 PFC + 1 ATC), instead of pulling from the untested batch. Even so, there should have been 11 remaining, and I only found 6. Also, where are the other 160+ PFCs? Earlier this week, I saw them at the sidewalk in a box, but someone moved them. I am going to use this as a good excuse to call it a "day". I will finish the job sometime over Fri-Sun, so it is nice and pretty for the start of next week. I still need to locate 14 PFCs (I will not label them if they are untested). To do list:: 1) Install 10 ATCs. 2) Route 40 PFCs from the patch panels to the ADF backplane. 3) Route 30 LVDS cables from the 10 ATCs to the TAB backplane. **Comment by alstone on Friday, July 29, 2005 6:03:38 AM CDT Just so no one panics...I cleaned up a bit, while trying to locate stuff. All the tools have been put back in the tool bag in the cabinet. All the loose papers were stacked in one pile and placed on the red IN/OUT tray. All the empty cardboard boxes were set aside. **Comment by Alan Stone on Friday, July 29, 2005 7:12:32 AM CDT Maybe the other pleated foil cables are in the DAB3 cabinet with other L1 CAL upgrade components. I forgot to look there.