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VIS (BS)
naoatsu.hirata - 15:43 Friday 21 April 2023 (24916) Print this report
Measurements of DAC noise for BS actuators

[Ushiba-san, Sato-san, Hirata]

 

We measured DAC noise for TM, IM on BS.

We connected whitening filter between DAC and ADC and measured TM_AIout, IMH_AIout, IMV_AIout. After that we connected whitening filter to the TM satellite box inside cleanbooth and measured TM_COILout_dw0, dw1, dw2 and dw3.

Measured results are attached.

Measurering data are under /users/DGS/measurements/DAC/k1bs .

Images attached to this report
Comments to this report:
takafumi.ushiba - 14:40 Wednesday 26 April 2023 (24965) Print this report

According to the measurement by AEL groups, ch3 of whitening filter we used was broken unfortunately and 1st whitening filter (#7 bit) was always on during the measurement.
So, we need to compesate the whitening filter effect (z:1, p:10) from the measurement of CH11.

naoatsu.hirata - 18:55 Friday 28 April 2023 (25008) Print this report

[Fabian, Sato-san, Hirata]

We measured DAC noise for IM on BS.

We connected whitening filter to the IMV and IMH satellite box inside cleanbooth and measured IMV_COILout_dw0, dw1, dw2, dw3, IMH_COILout_dw1 dw2, dw3.

We finished measurement for BS.

Measured results are attached.

Measurering data are under /users/DGS/measurements/DAC/k1bs .

Images attached to this comment
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