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MAX-QS+ is a white-light and phase-shift interferometer for inspection of single fiber ST, FC, SC, LC, MU, E2000 (PC and APC), small format multi-fiber MT-RJ (PC and APC), SMA and special connectors. MAX-QS features portable design, autofocus and resolution of 1.1 micron.

The device connects to a laptop or desktop computer via USB 3.0 cable and 12V DC power adapter.

Sumix interferometers are supplied with the industry-leading MaxInspect™ software for interferometric inspection of fiber optic connectors.

Download MAX-QS+ brochure

Features and Benefits

High resolution 2D and 3D surface profiles

Explore surface details as small as 1.1 µm.


Minimize operator’s actions to just one click.

Fast measurements

Measure a single fiber connector in 2 seconds or less.

Ergonomic fixture design

Save time with easy ferrule/connector insertion and fixture handling.

Combined anomalies detection and geometry testing

Speed up inspection and increase work efficiency.

Modern and portable design

Make high quality measurements in the field.

Industry-leading MaxInspect™ automated inspection software

Measure radius of curvature, apex offset, fiber height, core dip, etc.

Microscopy mode

Visually inspect connector end face prior to measurement

Compliance to industry standards

Test per IEC, Telcordia or your own Pass/Fail criteria.



Measurement technique:
non-contact; Michelson interferometry
NA = 0.25; reference flatness error < λ/50
green LED (530 nm)
Field of view:
1.1 × 0.9 mm
Lateral resolution:
1.1 µm
500× (the digital zoom turned off)
autofocus and manual
Maximum image size:
2590 x 1940 px
Best suitable for connectors/ferrules (PC and APC):
SC, FC, ST, LC, MU, E2000, SMA, MT-RJ


Measurement mode:
phase shift and white light
Scanning and calculation time:
Measurement time may vary depending on computer performance and connector end face shape.
2* sec
* 64 MHz, standard single fiber connector.
Repeatability C.F.*:
*Values calculated from 30 consecutive measurements without interaction on connector between measurements (connector fixed).
ROC: 0.1 %
Fiber Height: 0.1 nm
Angles: 0.0002 deg
Apex Offset: 0.08 µm
Repeatability C.R.*:
*Values calculated from 30 consecutive measurements with removing and inserting connector between measurements (connector reloaded).
ROC: 0.16 %
Fiber Height: 0.4 nm
Angles: 0.006 deg
Apex Offset: 0.8 µm

Recommended Environment

+20°C… +24°C
700 – 850 mm mercury
5 – 75%, non-condensing

Dimensions and Weight

Dimensions (H × W × L):
103 × 137 × 183 mm (4.06 × 5.39 × 7.2 inches)
3.9 kg (8.6 lbs)


Power supply:
external, USB 3.0 cable, 12 V DC power adapter

System Requirements

Windows 10, Windows 7 Service Pack 1
Intel Core i7
4GB RAM or higher
Built-in Intel USB 3.0 controller
Microsoft Excel 2007 or higher


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