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 Fri Mar 29 19:23:49 2013, Gabriele, Jenne, Frogs, LSC, Analog whitening filter of REFL55 not switching
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 Fri Mar 29 19:58:24 2013, Gabriele, Jenne, Frogs, LSC, Analog whitening filter of REFL55 not switching
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Mon Apr 1 16:24:09 2013, Jamie, Frogs, LSC, PD whitening switching fixed (loose connection at break-out box) 
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Message ID: 8383
Entry time: Mon Apr 1 16:24:09 2013
In reply to: 8375
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| Author: |
Jamie |
| Type: |
Frogs |
| Category: |
LSC |
| Subject: |
PD whitening switching fixed (loose connection at break-out box) |
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| Quote: |
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We discovered that the analog whitening filter of the REFL55_I board is not switching when we operate the button on the user interface. We checked with the Stanford analyzer that the transfer function always correspond to the whitening on.
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This turned out to just be a loose connection of the ribbon cable from Contec board in the LSC IO chassis at the BIO break-out box. The DSUB connector at the break-out box was not strain relieved! I reseated the connector and strain relieved it and now everything is switching fine.
I wonder if we'll ever learn to strain relieve... |