Installation Report

DVIA-ULF Series

09-02-2022

SNU Precision OCA CTQ Equipment DVIA-UB350 (220614R01) Installation Report

DVIA-ULF Series

Installation Report

SNU Precision

SNU

OCA CTQ

DVIA-UB350

220614R01

Asan

Prepared for

SNU Precision

Prepared by

Engineer: Seounghoon Cheon

Tuning date: 22.09.01

Report written date: 22.09.02

Date of business trip : 17.12.27~17.12.29

Overview

The DVIA-UB350 active vibration isolation platform is appropriately installed and functioning as intended.

System Information

Model: DVIA-UB350(1700x725x133H)

Serial Number: 220614R01

Engineer

Seounghoon Cheon, from DAEIL SYSTEMS

Tuning Date

September 01, 2022

Location

SNU Precision, Asan-si

Equipment

SNU OCA CTQ Equipment

Measurement Device

7.1) Data Physics

Hardware: Quattro, Serial Number: 22436

Software: SignalCalc ACE

7.2) Measurement Setting

-Bandwidth: 0 – 80 Hz

-Lines: 800

-Window: Hanning

-Averaging: FFT Spectrum Averaging

-Engineering Units: m/s^2

7.3) Sensor

PCB Accelerometer

Model: 393B05

Summary of Vibration Results

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	D	D	F	G	G	F
Active	F	F	G	G	F	G

Data and Image (Equipment Turn off)

Floor Z-axis (Vertical) VC curves

Top Z-axis (Vertical) VC curves

Z-axis (Vertical) Transmissibility

Floor X-axis (Left to Right) VC curves

Top X-axis (Left to Right) VC curves

X-axis (Left to Right) Transmissibility

Floor Y-axis (Front to Back) VC curves

Top Y-axis (Front to Back) VC curves

Y-axis (Front to Back) Transmissibility

Reference

Generic Vibration Criteria

Criterion Curve	Description	Amplitude μm/s (µin/s)	Detail Size μm
Workshop (ISO)	Distinctly perceptible vibration. Appropriate to workshops and non-sensitive areas.	800 (32,000)	N/A
Office (ISO)	Perceptible vibration. Appropriate to offices and non-sensitive areas.	400 (16,000)	N/A
Residential Area (ISO)	Barely perceptible vibration. Appropriate to sleep areas in most instances.	200 (8,000)	75
Operating Theatre (ISO)	Vibration not perceptible. Suitable for surgical suites, microscopes to 100x.	100 (4,000)	25
VC-A	Adequate for optical microscopes to 400x, microbalances, optical balances.	50 (2,000)	8
VC-B	Appropriate for inspection and lithography equipment to 3μm line widths.	25 (1,000)	3
VC-C	Appropriate for optical microscopes to 1000x, lithography equipment to 1μm.	12.5 (500)	1 - 3
VC-D	Suitable for demanding equipment including electron microscopes (SEMs/TEMs).	6.25 (250)	0.1 - 0.3
VC-E	For the most demanding systems including E-Beam lithography at nanometer scales.	3.12 (125)	< 0.1
VC-F	For extremely quiet research spaces. Not recommended as design criterion.	1.56 (62.5)	N/A
VC-G	For extremely quiet research spaces. Not recommended as design criterion.	0.78 (31.25)	N/A