Thermo Fisher Scientific Apreo SEM DVIA-ML1000 Installation Report

DVIA-M Series

Installation Report

jiangsu tiangong precision tools co ltd

Thermo Fisher Scientific

SEM

DVIA-ML1000

251218R1-6

Overview

Following the installation of DVIA-ML1000 at Zhenjiang(镇江), tuning and vibration measurement were performed. Vibration measurement was conducted with the equipment in the Idle state.

Data is represented in VC Curve format and reference material on the vibration level is provided.

Vibration Isolation System Information

Model: DVIA-ML1000

Serial Number: 251218R1-6

Engineer

Younguk KIM · DAEIL SYSTEMS

Tuning Date

2026.08.11

End User

jiangsu tiangong precision tools co ltd(江苏天工精密工具有限公司)

Number of Tuning Trial

1st

Site

Zhenjiang(镇江)

Equipment

Manufacturer: Thermo Fisher Scientific

Equipment: SEM

Model: Apreo

Vibration Specification

Horizontal

Frequency [Hz]	Allowable [µm/s RMS]
1	1.5625
100	1.5625

Vertical

Frequency [Hz]	Allowable [µm/s RMS]
1	1.5625
100	1.5625

Equipment Condition

Idle

Tuning Request

Image 1 — Thermo Fisher Scientific Apreo SEM DVIA-ML1000 Installation Report

Measurement Summary

Measurement Point	Vibration Specifications	Axis	Result
Measurement Point	Vibration Specifications	Axis	Floor	DVIA-ML1000
1. Floor 2. DVIA-ML1000	See Section 9	Vertical	✗ FAIL	✓ PASS
		Left to Right	✗ FAIL	✓ PASS
		Front to Back	✗ FAIL	✓ PASS

Measurement Data Obtained via UI Program

Vertical

Vertical — VC Curves

Image 2 — Thermo Fisher Scientific Apreo SEM DVIA-ML1000 Installation Report

Left to Right

Left to Right — VC Curves

Image 3 — Thermo Fisher Scientific Apreo SEM DVIA-ML1000 Installation Report

Front to Back

Front to Back — VC Curves

Image 4 — Thermo Fisher Scientific Apreo SEM DVIA-ML1000 Installation Report

Installation Photo

Equipment

Image 5 — Thermo Fisher Scientific Apreo SEM DVIA-ML1000 Installation Report

Reference

The table below classifies vibration levels based on IEST-RP-CC012.2.

Criterion Curve	Description	Amplitude¹μm/s (μin/s)	Detail Size²μm
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. Usually adequate for computer equipment, hospital recovery rooms, semiconductor probe test equipment, and microscopes less than 40x.	200 (8,000)	75
Operating Theatre (ISO)	Vibration not perceptible. Suitable in most instances for surgical suites, microscopes to 100x and for other equipment of low sensitivity.	100 (4,000)	25
VC-A	Adequate in most instances for optical microscopes to 400x, microbalances, optical balances, proximity and projection aligners, etc.	50 (2,000)	8
VC-B	Appropriate for inspection and lithography equipment (including steppers) to 3μm line widths.	25 (1,000)	3
VC-C	Appropriate standard for optical microscopes to 1000x, lithography and inspection equipment (including moderately sensitive electron microscopes) to 1μm detail size. TFT-LCD stepper/scanner processes.	12.5 (500)	1-3
VC-D	Suitable in most instances for demanding equipment, including many electron microscopes (SEMs and TEMs) and E-Beam systems.	6.25 (250)	0.1-0.3
VC-E	A challenging criterion to achieve. Assumed to be adequate for the most demanding of sensitive systems including long path, laser-based, small target systems, E-Beam lithography systems working at nanometer scales, and other systems requiring extraordinary dynamic stability.	3.12 (125)	<0.1
VC-F	Appropriate for extremely quiet research spaces; generally difficult to achieve in most instances, especially cleanrooms. Not recommended for use as a design criterion, only for evaluation.	1.56 (62.5)	N/A
VC-G	Appropriate for extremely quiet research spaces; generally difficult to achieve in most instances, especially cleanrooms. Not recommended for use as a design criterion, only for evaluation.	0.78 (31.3)	N/A

¹ As measured in one-third octave bands of frequency over the frequency 8 to 80 Hz (VC-A and VC-B) or 1 to 80 Hz (VC-C through VC-G).

² The detail size refers to the width in the case of microelectronics fabrication, the particle (cell) size in the case of medical and pharmaceutical research, etc. It is not relevant to imaging associated with probe technologies, AFMs, and nanotechnology.

The information given in this table is for guidance only. In most instances, it is recommended that the advice of someone knowledgeable about applications and vibration requirements of the equipment and processes be sought.