MAY406 Mini OTDR Optical Time Domain Reflectometer 1550nm 22dB 5 in 1 OPM OLS VFL Dry Battery Power Supply


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  • Integrated design, smart and rugged
  • FC/SC connectors interchangeable
  • Visual Fault Locator (VFL) function
  • Dust-, water- and shock-proof, designed for field use


  • CATV network testing
  • Access network testing
  • LAN network testing
  • Laband Factory testing
  • FTTA troubleshooting

2. Event Map
Event Map is similar to EXFO’s iOLM function, which can display events in user-friendly icons.
3. Optical Power Meter (OPM)
4. Visual Fault Locator (VFL)
Visual Fault Locator uses red laser of 650nm to locate broken fiber point and test fiber continuity.
5. Optical Light Source (OLS)


Model MAY406-15
Wavelength 1550nm±20nm
Dynamic Range 22dB
Fiber Type SMF
Event Dead Zone 3m
Attenuation Dead Zone 10m
Measurement meter
Measurement Pulse Width 5ns~ 8000ns, Auto
Ranging Accuracy ±(1m+2*10-4*Test distance)
File Format SOR standard file format
Laser Safety Level Class II
Adapter FC (Interchangeable SC adapter)
Language English

2. Optical Power Meter

Wavelength Range (±20nm) 800~1700nm
Calibrated Wavelength 850/1300/1310/1490/1550/1625nm
Test Range -50~+26dBm
Resolution 0.01dB
Uncertainty ±5%
Frequency Identification CW/270/330/1k/2kHz
Connector Universal 2.5mm (FC/SC/ST)

3. Visual Fault Locator

Wavelength (±20nm) 650nm
Power ≥10mW
Mode 1Hz/2Hz/CW
Connector Universal 2.5mm (FC/SC/ST)

4. Optical Light Source

Emitter Type FP-LD
Working Wavelength 1550nm±20nm
Output Power ≥-5dBm
Modulation Frequency 270/330/1k/2kHz
Accuracy CW, ±0.5dB/15min (Test after 15 minutes of preheating)
Connector FC (Interchangeable SC adapter)

4.1. The wavelength of Optical Light Source is the same as OTDR wavelength.
4.2. Optical Light Source shares the same fiber port as OTDR port.

Other Specification:

Display 2.6 inch color LCD
Power Supply 3*AA dry batteries
Battery Working Time ≥2000 times measure
Communication USB
Data Storage 500 curves
Weight 0.3kg
Operating Temperature -5 ~ +40°C
Storage Temperature -10 ~ +60°C
Relative Humidity <85% Non-condensation

Standard Accessories:

Item Name Quantity
1 OTDR with FC adapter for OTDR port 1pc
2 SC adapter for OTDR port 1pc
3 AA dry batteries 3pcs
4 USB cable 1pc
5 Soft bag 1pc
6 User manual 1pc

Ordering Information:

Model MAY406-15
Connector None: UPC (default)
Weight 1 kg
Dimensions 23 × 13 × 11 cm
Wavelength & OTDR Port:

1550nm UPC, 1550nm APC


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