MAY402 Smart OTDR Optical Time Domain Reflectometer 1310/1550nm 22/20dB 24/22dB 4 in 1 OPM OLS VFL Touch Screen


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The High Precision OTDR is a Professtional Equipment For FTTx & Metro Optical network Systems.

As fiber optics plays more and more important role in modern telecommunication and CATV networks, the requirements to the construction, test and maintenance of fiber optics links also become more prominent. MAY402 OTDR is a unique product mainly designed for construction and maintenance of telecommunication and CATV networks. MAY402 OTDR can be widely used in engineering construction, maintenance test and emergency repair of all fiber optics related systems. Comparing with a regular OTDR, MAY402 OTDR is more compact in size and easier for field use.

MAY402 OTDR handheld design, compact and lightweight, easy to carry. Event information through IPS color dispaly and data storage capabilities. Through the USB interface, the test data can be uploaded to the PC, to facilitate the post-processing, archiving and printing.


  • High precision
  • Integrated design, smart and rugged
  • Shockproof, outdoor enhanced
  • FC/SC Connectors exchangeable
  • Automatic and manual test function
  • OTDR Viewer software for data analysis


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

2. Optical Power Meter (OPM)
3. Optical Light Source (OLS)
4. Visual Fault Locator (VFL)
Visual Fault Locator uses red laser of 650nm to locate broken fiber point and test fiber continuity.
5. Report Print
PC software helps print out OTDR test reports.


Model MAY402-D22 MAY402-D24
Wavelength 1310/1550nm
Dynamic Range 22/20dB 24/22dB
Distance Range 3m to 60km
Fiber Type SMF
Samping Points Maximum 65K
Linearity ≤0.05dB/dB
Averaging Time 5s, 15s, 30s, 1min, 2min, 3min
Auto Off Off/on
Ranging Accuracy ±(1m+measuring distance×2×10-4+sampling resolution) (excluding IOR uncertainty)
Screen Backlight ≤99
IOR Setting 1.0000~2.0000
Units Meter, Feet, Mile
OTDR Trace Format Telcordia universal, SOR, issue 2 (SR-4731)
OTDR: User selectable automatic or manual
Laser Peak ≥30mW
Event Dead Zone 2m
Attenuation Dead Zone 12m
Adapter FC (Interchangeable SC adapter)
Language English

2. Optical Power Meter

Wavelength Range (±20nm) 800~1650nm
Calibrated Wavelength 850/1300/1310/1490/1550/1625nm
Detector InGaAs
Test Range -70~+10dBm
Accuracy <±3% (-10dBm, 22°C)
Resolution Linearity: 0.1%, Non-linearity: 0.01dBm
Connector FC (Interchangeable SC adapter)

3. Optical Light Source

Emitter Type FP-LD
Working Wavelength 1310/1550nm±20nm
Output Power ≥-5dBm
Modulation Frequency CW/270/1k/2kHz
Accuracy ±0.04 @ 20°C @15min
Fiber Type SMF
Connector FC (Interchangeable SC adapter)

3.1. The wavelength of Optical Light Source is the same as OTDR wavelength.
3.2. Optical Light Source shares the same fiber port as OTDR port.

4. Visual Fault Locator

Wavelength (±20nm) 650nm
Power 10mW CLASS IIB (15km)
Mode CW/1Hz/2Hz
Fiber Type SM/MM
Connector Universal 2.5mm (FC/SC/ST)

Other Specification:

Display IPS Touch Screen, 800×400px, 4 inch
Power Supply 7.4V/4400mAH(dc), 100V(ac) to 240V(ac), 50~60Hz; Lithium battery: 8.4V 4400mAh
Battery Working Hours ≥8h, Telcordia GR-196-Core
Interface 1×USB, 1×OTDR port, 1×VFL port, 1×Power Meter Port, 1×Charging Port
Power Saving Backlight off, Auto shutdown
Data Storage Internal: 100 curves
Weight 0.3kg
Size 190*84*52mm
Operating Temperature -10 ~ +50°C
Storage Temperature -20 ~ +70°C
Relative Humidity < 95% Non-condensation

Standard Accessories:

Item Name Quantity
1 OTDR with FC Adapters 1pc
2 AC/DC power adapter 1pc
3 CD (including simulation analysis software) 1pc
4 SC adapter for OTDR port 1pc
5 SC adapter for OPM port 1pc
6 User manual 1pc
7 Test Report 1pc
8 Soft bag 1pc

Ordering Information:

Model MAY402
Wavelength and Dynamic Range D22: 1310/1550nm, 22/20dB
D24: 1310/1550nm, 24/22dB
Connector None: FC/UPC and SC/UPC (default)
Weight 1.5 kg
Dimensions 23 × 16 × 8 cm
Wavelength & Dynamic Range:

1310/1550nm 22/20dB, 1310/1550nm 24/22dB

OTDR Port:



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