40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Thu Jan 14 11:46:20 2021, gautam, Update, CDS, Expansion chassis from LHO 
    Reply  Thu Jan 14 12:19:43 2021, Jon, Update, CDS, Expansion chassis from LHO 
    Reply  Fri Jan 15 15:06:42 2021, Jon, Update, CDS, Expansion chassis from LHO 
       Reply  Fri Jan 15 16:54:57 2021, gautam, Update, CDS, Expansion chassis from LHO Screenshot_2021-01-15_17-00-06.png
          Reply  Tue Jan 19 13:19:24 2021, Jon, Update, CDS, Expansion chassis from LHO 
Message ID: 15763     Entry time: Thu Jan 14 11:46:20 2021     Reply to this: 15764   15766
Author: gautam 
Type: Update 
Category: CDS 
Subject: Expansion chassis from LHO 

I picked the boxes up this morning. The inventory per Fil's email looks accurate. Some comments:

  1. They shipped the chassis and mounting parts (we should still get rails to mount these on, they're pretty heavy to just be supported on 4 rack nuts on the front). idk if we still need the two empty chassis that were requested from Rich.
  2. Regarding the fibers - one of the fibers is pre-2012. These are known to fail (according to Rolf). One of the two that LHO shipped is from 2012 (judging by S/N, I can't find an online lookup for the serial number), the other is 2011. IIRC, Rolf offered us some fibers so we may want to take him up on that. We may also be able to use copper cables if the distances b/w server and expansion chassis are short.
  3. The units are fitted with a +24V DC input power connector and not the AC power supplies that we have on all the rest of the chassis. This is probably just gonna be a matter of convenience, whether we want to stick to this scheme or revert to the AC input adaptor we have on all the other units. idk what the current draw will be from the Sorensen - I tested that the boards get power, and with noi ADCs/DACs/BIOs, the chassis draws ~1A (read off from DCPS display, not measured with a DMM). ~Half of this is for the cooling fans It seems like KT @ LLO has offered to ship AC power supplies so maybe we want to take them up on that offer.
  4. Without the host side OSSI PCIe card, timing interface board, and supermicro servers that actually have enough PCIe slots, we still can't actually run any meaningful test. I ran just a basic diagnostic that the chassis can be powered on, and the indicator LEDs and cooling fans run.
  5. Some photos of the contents are here. The units are stored along the east arm pending installation.

    >     Koji,
    >
    >     Barebones on this order.
    >
    >        1. Main PCIe board
    >        2. Backplane (Interface board)
    >        3. Power Board
    >        4. Fiber (One Stop) Interface Card, chassis side only
    >        5. Two One Stop Fibers
    >        6. No Timing Interface
    >        7. No Binary Cards.
    >        8. No ADC or DAC cards
    >
    >     Fil Clara
    >       
ELOG V3.1.3-