MAX-QS+ Interferometer

Single fiber inspection
PASS/FAIL verdict
Scratch detection
Fast measurement
Industry standards

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, 100 micron scan range for fiber height 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.

MAX-QS+ is supplied with the industry-leading MaxInspect™ software for interferometric inspection of fiber optic connectors.

Download brochure


More images you can find here


High resolution 2D and 3D surface profiles

Explore surface details as small as 1.1 μm.


Minimize operator’s actions to just one click.

Combined anomalies detection and geometry testing

Speed up inspection and increase work efficiency.

Fast measurements

Measure a single fiber connector in 2 seconds or less.

Microscopy mode

Visually inspect connector end face prior to measurement.

Industry-leading MaxInspect™ automated inspection software

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

More than 1000 micron scan range for fiber height

Accurately inspect ferrule surfaces with large discontinuities and special connectors.

Data-base connectivity

Store measurement data from all local sites in one place and easily integrate Sumix equipment into your manufacturing systems. Learn more

Compliance to industry standards

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

MAX-QS+ Specification


Measurement technique:
non-contact; Michelson interferometry
NA = 0.25; 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 × 1940 px
Best suitable for connectors/ferrules (PC and APC):
SC, FC, ST, LC, MU, E2000™, SMA, MT-RJ
Microscopy Mode:


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.
Measurement Range:
ROC (mm): 1 to flat
Apex offset (μm): 0 to 2000
Fiber height* (μm): more than 1000**
Angles measurements - full range (degrees): 0 to 28***
* Difference from the highest and lowest points of the scanned object.
**<100 µm available by default. >100 µm - for special connectors/tasks (software adjustment required).
*** Regular fixtures - 0, 8, 9 degrees. Customized fixtures - 0 -28 degrees.
Repeatability C.F.*:
* Values were calculated from 30 consecutive measurements without interaction on connector between measurements (connector fixed) and represent one sigma value.
ROC: 0.1 %
Fiber Height: 0.1 nm
Angles: 0.0002 deg
Apex Offset: 0.08 µm
Repeatability C.R.*:
* Values were calculated from 30 consecutive measurements with removing and inserting connector between measurements (connector reloaded) and represent one sigma value.
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
Intel Core i7
4GB RAM or higher
Built-in Intel USB 3.0 controller
Microsoft Excel 2010 or higher

MAX-QS+ interferometric system includes:

  • MAX-QS+ interferometer
  • Optical flat standard for device verification
  • USB 3.0 cable
  • AC adapter
  • Allen key
  • Case
  • MaxInspect™ software license

Fixtures and other accessories should be ordered separately.


Sample Images

E2000 is a trademark of Diamond SA.
MTP is a registered trademark of US Conec Ltd.
CS is a registered trademark of Senko Advanced Components Inc.