YIMO Beijing University of Aeronautics and Astronautics Unisoku STM DVIA-ML1000 (250730R1-1) Installation Report
Contents
Overview
On December 3, 2025, an issue with the Z-axis VCM was identified during tuning, and a follow-up inspection was conducted on December 11, 2025.
As a result of the inspection, the Z2 VCM was found to be faulty, and the Z3 and Z4 VCMs were configured with reversed output polarity.
As an interim measure, the Z2 VCM was turned off, and tuning was performed after reversing the sign of the output matrix for the Z3 and Z4 VCMs.
After tuning, slight performance degradation was observed in the horizontal axes, but the overall performance was measured to be acceptable
Full performance is expected only after the issues with the Z2, Z3, and Z4 VCMs are fully resolved.
Vibration Isolation System Info
Model: DVIA-ML1000
Serial Number: 250730R1-1
Engineer
Chaewon Lee DAEIL SYSTEMS
Tuning Date
December 11, 2025
Report written date
December 12, 2025
End User
Beijing University of Aeronautics and Astronautics
Number of Tuning Trial
2nd (1st: 25.12.03)
Location
Beijing, China
Equipment
Manufacturer: Unisoku
Equipment: STM
Model: N/A
Equipment Condition
The equipment is installed/IDLE
Tuning Request
Data and Image
Vertical Transmissibility
Left to Right Transmissibility
Front to Back Transmissibility
Equipment picture
Reference
Notes:
- As measured in one-third octave bands over 8-80 Hz (VC-A/B) or 1-80 Hz (VC-C through VC-G).
- Detail size refers to width in microelectronics fabrication or particle size in medical research.
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