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IOO (Laser Bench)
kohei.yamamoto - 18:52 Wednesday 01 August 2018 (5669) Print this report
The problem of the common mode servo for the MZM experiment

Uehara, Guiguo, Kohei Yamamoto
(Acknowledgements Takahiro Yamamoto)

We continued to look into the BO problem(related link).
With some investigations, we attributed this to the software.   
Then we finally found the mistake of the model.
After solving the problem, the common mode servo successfully worked.
Tomorrow we will try to lock the modulation system.

Comments to this report:
kiwamu.izumi - 9:09 Thursday 02 August 2018 (5679) Print this report

Hey Yamamoto-kun,

It is good to hear that the BIOs are now working fine with a common mode servo board.

Regarding this issue, could you elaborate a bit more on the software "mistake" that you found?

I am asking because we will be also installing several BIOs for the common mode servo boards at some point in a near future.

kohei.yamamoto - 10:13 Thursday 02 August 2018 (5681) Print this report

Izumi-san,

The "mistake" was the silly one related to the model I created.
In the model, I applied the number of 1 & 2 to the BO modules.
Because these BO cards are the first ones installed in the IOO1 chassis, the number should have been 0 & 1.

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