ARCHE Semilab AFM-2000 DVIA-UB350 Installation Report
Contents
Prepared for
SEMILAB
Overview
The DVIA-UB350 active vibration isolation platform is appropriately installed and functioning as intended.
System Information
Model: DVIA-UB350
Serial Number: 220621R1
Engineer: Youngha Lee, DAEIL SYSTEMS
Tuning date: June 08, 2023
Report written date: June 09, 2023
Date of business trip: December 27–29, 2017
Location: ARCHE, 147, Annyeong-gil, Byeongjeom-gu, Hwaseong-si, Gyeonggi-do, Republic of Korea
Equipment: AFM-2000
Summary of vibration measurement results
Idle-condition measurement
| Measurement Point | Z-axis (Vertical) 1–10 Hz | Z-axis (Vertical) 12.5–80 Hz | X-axis (Left to Right) 1–10 Hz | X-axis (Left to Right) 12.5–80 Hz | Y-axis (Front to Back) 1–10 Hz | Y-axis (Front to Back) 10–80 Hz |
|---|---|---|---|---|---|---|
| Floor | C | C | F | F | F | F |
| Active (DVIA-UB350) | G | G | G | G | G | G |
Enclosure-door disturbance measurement
| Measurement Point | Z-axis (Vertical) 1–10 Hz | Z-axis (Vertical) 12.5–80 Hz | X-axis (Left to Right) 1–10 Hz | X-axis (Left to Right) 12.5–80 Hz | Y-axis (Front to Back) 1–10 Hz | Y-axis (Front to Back) 10–80 Hz |
|---|---|---|---|---|---|---|
| Floor | E | D | F | F | E | E |
| Active (DVIA-UB350) | F | F | E | G | F | G |
Data and Image
Z-axis (Vertical) Transmissibility
Z-axis (Vertical) VC-Curve graph — routine condition
Z-axis (Vertical) VC-Curve graph — enclosure-door disturbance
When ambient vibration was produced by opening and closing doors, low-frequency vibration on the isolator top plate increased but remained within VC-E; floor vibration did not increase while top-plate vibration did, suggesting interference from vibrations applied to the enclosure reaching the isolator top plate.
X-axis (Left to Right) Transmissibility
X-axis (Left to Right) VC-Curve graph — routine condition
X-axis (Left to Right) VC-Curve graph — enclosure-door disturbance
When ambient vibration was produced by opening and closing doors, vibration on the isolator top plate from 1–7 Hz increased but remained within VC-E; as with the Z-axis VC curve, floor vibration did not increase while top-plate vibration did, suggesting interference from vibrations applied to the enclosure reaching the isolator top plate.
Y-axis (Front to Back) Transmissibility
Y-axis (Front to Back) VC-Curve graph — routine condition
Y-axis (Front to Back) VC-Curve graph — enclosure-door disturbance
When ambient vibration was produced by opening and closing doors, vibration on the isolator top plate from 1–7 Hz increased but remained within VC-F; compared with the other axes, interference from ambient vibration sources appears relatively small.
Equipment installation picture
Acoustic enclosure exterior
Installation detail — cable tension and breadboard fastening (labeled ① and ②)
Installation improvements
Cable tension from the PC-to-equipment connection shown as item ① was strong, which could allow enclosure vibration to couple into the isolator top plate (equipment). Available slack should be increased to reduce cable tension.
During the site visit, a breadboard-mounted fixture used to limit equipment motion during transfer (item ②) was installed. Because enclosure vibration could couple into the isolator top plate (equipment), the engineer was asked to remove that fixture.
Reference
Generic Vibration Criteria
*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.
