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| 40m Log |
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 Fri Apr 10 19:09:48 2009, Jenne, Update, PSL, PMC LO Calibration 
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 Sat Apr 11 00:45:41 2009, Yoichi, Update, PSL, PMC LO Calibration
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Sun Apr 12 19:27:20 2009, rana, Update, PSL, PMC LO Calibration
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Mon Apr 13 08:59:57 2009, steve, Update, PSL, mixers on order
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Message ID: 1475
Entry time: Sun Apr 12 19:27:20 2009
In reply to: 1473
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| Author: |
rana |
| Type: |
Update |
| Category: |
PSL |
| Subject: |
PMC LO Calibration |
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| Quote: |
3.8Vpp is about 16dBm.
The mixer for the PMC demodulator is level 23. So 16dBm is insufficient.
What is the level of the new mixer Steve ordered ? 13 ? |
Since Steve and Jenne were on it, I'm sure they ordered the optimum values...
From the table, it looks like the drive level adjuster is busted. Its not supposed to just give a
1-2 dB change over the full range. We'll have to think about what exactly to do, but we should
probably install the level 13 mixer and put in the right attenuation to make the LO be ~13.5 dBm
including the filter. Also need to calibrate the LO readback on the board like what Peter did for
the FSS. |