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 Wed Dec 10 15:05:32 2014, Jenne, Update, Electronics, Xend QPD whitening board modified already 
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 Thu Dec 11 16:42:12 2014, Jenne, Update, Electronics, Xend QPD whitening board plan
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Fri Dec 12 19:54:21 2014, Jenne, Update, Electronics, Xend QPD whitening board modified
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Sat Dec 13 00:35:11 2014, rana, Update, Electronics, Xend QPD whitening board modified
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Mon Dec 15 22:30:50 2014, Jenne, Update, Electronics, Yend QPD modified
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Mon Dec 15 22:45:59 2014, Jenne, Update, Electronics, Yend QPD modified
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Fri Feb 13 14:27:30 2015, ericq, Update, Electronics, Second QPD Whitening Switch enabled
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Fri Feb 13 14:59:13 2015, ericq, Update, Electronics, Second QPD Whitening Switch enabled
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Fri Feb 13 18:56:44 2015, rana, Update, Electronics, Second QPD Whitening Switch enabled
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Thu Feb 19 04:09:21 2015, ericq, Update, Electronics, Second QPD Whitening Switch enabled
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Fri Feb 13 17:07:51 2015, Jenne, Update, Electronics, Second QPD Whitening Switch enabled
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Message ID: 11049
Entry time: Thu Feb 19 04:09:21 2015
In reply to: 11025
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| Author: |
ericq |
| Type: |
Update |
| Category: |
Electronics |
| Subject: |
Second QPD Whitening Switch enabled |
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X end QPD has recieved 0.2+0.4 absorptive ND filters. Y end QPD got one at 0.6. This appears to have mitigated the saturations for now; the unwhitened signals no longer go negative. The digital gains have been reset.
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