The Picomotor of PR3 IM PITCH, ROLL and YAW was operated to measure the movement and drive range.

This work was done before K-Log15976.

PITCH
 We measured K1:VIS-PR3_IM_DAMP_P_INMON by driving from 0 to 80000, 80000 to -100000, and -100000 to 70000.
 In the positive direction, it moved at about 0.04 [urad/step] on the way to and from the destination.
 In the minus direction, it was different between the return trip and the return trip.
It was linear from 0.5 mrad to -1.5 [mrad], but then it became more gradual and there was a linear region up to -3 [mrad].

ROLL
We measured K1:VIS-PR3_IM_DAMP_R_INMON by driving from 0 to 160000, 160000 to -140000, and -140000 to 0.
It was moving at approximately 0.04 [urad/step].
It was linear in the range of ±3mrad.

YAW
We measured K1:VIS-PR3_IM_DAMP_Y_INMON by driving from 0 to 30000, 30000 to -30000, and -30000 to 20000.
It was moving at approximately -0.3[urad/step].
It was linear from -1.5[mrad] to around 4[mrad].
The hysteresis is large. Also, the count and sign of the motor were reversed.

After the work was finished, it was returned to around the original position.

DATA

/kagra/Dropbox/Personal/ikeda/VIS/20210210/