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40m
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| 40m Log |
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 Sat Nov 21 00:45:30 2015, Koji, Update, IOO, IMC fix 
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 Sat Nov 21 00:46:33 2015, Koji, Update, IOO, IMC OLTF
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Sun Nov 22 12:12:17 2015, Koji, Update, IOO, IMC OLTF
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Sun Nov 22 07:09:01 2015, rana, Update, IOO, IMC fix
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Sun Nov 22 12:07:09 2015, Koji, Update, IOO, IMC fix
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Mon Nov 23 22:12:10 2015, Koji, Update, IOO, LO level check for the IMC demod board
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Wed Nov 25 04:24:21 2015, rana, Update, IOO, LO level check for the IMC demod board
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Wed Nov 25 10:07:10 2015, Koji, Update, IOO, LO level check for the IMC demod board
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Wed Nov 25 16:46:10 2015, Koji, Update, IOO, LO level check for the IMC demod board
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Wed Nov 25 20:07:35 2015, rana, Update, IOO, LO level check for the IMC demod board
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Mon Nov 30 14:12:14 2015, ericq, Update, LSC, LO level check for the LSC RF distribution box
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Mon Nov 30 15:17:57 2015, Koji, Update, LSC, LO level check for the LSC RF distribution box
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Message ID: 11796
Entry time: Sun Nov 22 07:09:01 2015
In reply to: 11794
Reply to this: 11797
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| Author: |
rana |
| Type: |
Update |
| Category: |
IOO |
| Subject: |
IMC fix |
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On the demod board there is a 10 dB attenuator (AT1), which lowers the level to -10 dBm before the ERA-5. Then it should be 10 dBm before going to the rest of the parts. But I guess the ERA-5 chips which come later on in the circuit could be decaying like the ones in the PMC LO board.
| Quote: |
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Later at home, I thought this nominal LO level of 0dBm could have been wrong.
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