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40m Log |
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Fri Oct 29 14:39:37 2021, Anchal, Summary, BHD, 1Y1 cleared. IY3 ready for C1SUS2 I/O and FE.  
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Tue Nov 2 16:42:00 2021, Paco, Summary, BHD, 1Y1 rack work
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Tue Nov 2 18:54:41 2021, Anchal, Paco, Update, BHD, Optical fibres laid for BHD upgrade
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Thu Nov 4 15:03:43 2021, Koji, Summary, BHD, 1Y1 rack work
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Mon Nov 8 10:13:52 2021, Paco, Summary, BHD, 1Y1 rack work; Sorensens removed
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Mon Nov 8 13:13:00 2021, Koji, Summary, BHD, 1Y1 rack work; Sorensens removed
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Mon Nov 8 15:29:05 2021, Paco, Summary, BHD, 1Y1 rack work; New power for cameras
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Mon Nov 8 18:42:38 2021, Koji, Summary, BHD, Rack Layout / Power Strips
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Tue Nov 9 19:02:47 2021, Anchal, Summary, BHD, 1Y0 Populated and 1Y1,1Y0 powered
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Message ID: 16448
Entry time: Thu Nov 4 15:03:43 2021
In reply to: 16444
Reply to this: 16453
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Author: |
Koji |
Type: |
Summary |
Category: |
BHD |
Subject: |
1Y1 rack work |
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I have visited the binder file for the 40m wiring file in the control room.
The 12V power supply on 1Y1 is for the CCD cameras. So we still want to keep the 12V 0.8A power and the side connections for these. It is not necessary to be Sorensen. Can we replace it with an AC-DC adapter with +12V/1A for example? BTW, the video matrix and quads are AC-powered.
The mysterious thick cables and cross-connects (green wires) on the side panel (labeled AP1/AP2/SP/IMCREFL) are for "EO shutters". It was meant for the protection of the PDs from bright beams.
I don't think they have been used. And we don't need them. |