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Message ID: 361
Entry time: Wed Mar 5 17:35:24 2008
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| Author: |
rana |
| Type: |
Update |
| Category: |
IOO |
| Subject: |
RFAM during MC lock |
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I used an ezcaservo command to adjust the offsets for Alberto's StochMon channels. They are all
at +2 V with no light on the RFAM PD (MC unlocked).
Then I looked at 5 minutes of second trend around when the MC locks. Since Alberto has chosen
to use +2V to indicate zero RF and a negative gain, there is a large RF signal when the StochMon
channels approach zero.
From the plot one can see that the RFAM for the 133 & 199 MHz channels is much worse than for the 33 and 166.
Its also clear that the turn on of the WFS (when the RFAMPD's DC light level goes up) makes the single demod
signals get better but the double demod get worse. |
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