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Entry  Fri May 13 23:04:58 2011, Suresh, Update, RF System, DC power supply on RF distribution box has been replaced. P5130120.JPG
    Reply  Sat May 14 14:12:16 2011, Koji, Update, RF System, DC power supply on RF distribution box has been replaced. sorensen.png
       Reply  Wed May 18 15:54:50 2011, Koji, Update, RF System, DC power supplies for the RF generation box in place 
          Reply  Wed May 18 17:06:39 2011, Suresh, Update, RF System, DC power supplies for the RF generation box in place 
    Reply  Sat May 14 14:50:21 2011, Koji, Update, LSC, 1Y2 5V Blown Fuse found -> Fixed 1Y2_5V_Fuse.JPG
Message ID: 4740     Entry time: Wed May 18 17:06:39 2011     In reply to: 4738
Author: Suresh 
Type: Update 
Category: RF System 
Subject: DC power supplies for the RF generation box in place 

 

I have checked the voltages on the connector.  They are okay and I have plugged in the Sorensen power into the RF Source.  The ground reference for the Sorensens comes from the 1X2 Rack ground reference lines on the south side of the rack. 

I looked for the OMC ground reference. Could not find one on either of the the OMC half racks.

Quote:

[Koji, Steve]

DC power supplies for the RF generation box are now in place. They are the top two of the 6 Sorensens in the OMC short rack next to 1X2.

We made the connections as we did for the RF distribution box, the power supplies labele, and the cables strain-relieved.

The power supply is not yet connected to the actual RF generation box. This should be done by Suresh or someone with the supervision of him.

Note:
We have two +18V supply on the short OMC rack, in total. One is for the RF source, the other is for the OMC PZTs, whitening, etc.
This is to avoid unnecessary ground loop although the grounding situation of the OMC side is not known to me.

 

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