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Entry  Wed Aug 26 16:10:28 2009, Peter King, Configuration, PSL, PSL reference cavity temperature box modifications DSC_0731.jpg
    Reply  Wed Aug 26 16:35:03 2009, Alberto, Configuration, PSL, PSL reference cavity temperature box modifications 
    Reply  Sun May 8 22:59:40 2011, rana, Update, PSL, PSL reference cavity temperature box modifications 
       Reply  Mon May 9 20:30:20 2011, rana, Update, PSL, PSL reference cavity temperature box modifications Untitled.png
          Reply  Tue May 10 20:57:05 2011, rana, Update, PSL, PSL reference cavity temperature box modifications : after 24 hours still OK Untitled.png
Message ID: 1953     Entry time: Wed Aug 26 16:35:03 2009     In reply to: 1950
Author: Alberto 
Type: Configuration 
Category: PSL 
Subject: PSL reference cavity temperature box modifications 

Basically, in addition to the replacement of the resistors with metal film ones, Peter replaced the chip that provides a voltage reference.

The old one provided about 2.5 V, whereas the new one gets to about 7V. Such reference voltage somehow depends on the room temperature and it is used to generate an error signal for the temperature of the reference cavity.

Peter said that the new higher reference should work better.

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