MAY400E MINI PRO Multi-functional OTDR

MAY400E MINI PRO Multi-functional OTDR - Back View
MAY400E MINI PRO Multi-functional OTDR - Optical Ports
MAY400E MINI PRO Multi-functional OTDR - Left Side
MAY400E MINI PRO Multi-functional OTDR - Right Side
MAY400E Mini OTDR with Remote RJ45 Module
MAY400E MINI PRO Multi-functional OTDR - Standard Accessories

Standard Accessories

MAY400E MINI PRO Multi-functional OTDR integrates OTDR, OPM, VFL, Laser Source, Loss Test and RJ45 Sequence in one unit. It is a powerful and economic tester for installers of fiber cable and network cable.


  • Integrated design, smart and rugged
  • FC/SC/ST connectors interchangeable
  • Automatic and manual test function
  • Visual Fault Locator (VFL) function
  • OTDR Viewer software for data analysis


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

2. Optical Power Meter (OPM)
3. Visual Fault Locator (VFL)
Visual Fault Locator uses red laser of 650nm to locate broken fiber point and test fiber continuity.
4. Optical Laser Source (Laser)
5. Loss Test
OPM and OLS can be opened at the same time to test insertion loss.
6. RJ45 Sequence (RJ45 Seq.)
It can check wire map of RJ45 cable.
7. Flashlight
8. Report Print
PC software helps print out OTDR test reports.

Model MAY400E
Wavelength 1310/1550nm
Dynamic Range① 24/22dB
Fiber Type SMF
Event Dead Zone② 3m
Attenuation Dead Zone 8m
Measurement Range 500m/1km/2km/4km/8km/16km/32km/60km
Pulse Width 5ns/10ns/20ns/30ns/50ns/80ns/160ns/320ns/500ns/800ns/1000ns/2000ns/3000ns/5000ns/8000ns/10000ns
Ranging Accuracy ±(1m+Sampling Interval +0.005%×Test Distance)
Linearity ±0.2dB/dB
Sampling Resolution 0.05~8m
Samping Points 16~128K
Loss Resolution 0.01dB
Loss Threshold 0.2dB
Range Resolution 0.0001m
Refractive Index 1.40000~1.49900
Reflection Accuracy ±3dB
File Format SOR standard file format
Loss Analysis 4-point method / 5-point method
Laser Safety Level Class II
Adapter FC (Interchangeable SC adapter)
Language English, Russian, Spanish, Vietnamese, Chinese

①Testing temperature is 25°C±2°C, maximum pulse width, average time is more than 3 minutes.
②Test conditions of Event Dead Zone are minimum range, minimum pulse width, reflection loss of optical fiber end surface (>45dB), typical value.

2. Optical Power Meter
Wavelength Range 800~1700nm
Calibrated Wavelength 850/1270/1300/1310/1490/1550/1577/1625nm
Test Range -50~+26dBm
Resolution 0.01dB
Uncertainty ±5%
Frequency Identification CW/270Hz/1kHz/2kHz
Connector Universal 2.5mm (FC/SC/ST)
3. Optical Light Source
Emitter Type FP-LD
Working Wavelength 1310/1550nm±20nm
Output Power ≥-5dBm
Modulation Frequency CW/270Hz/1kHz/2kHz
Accuracy CW, ±0.5dB/15min (Test after 15 minutes of preheating)
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 650nm±20nm
Power ≥10mW
Mode CW/1Hz/2Hz
Connector Universal 2.5mm (FC/SC/ST)
5. RJ45 Sequene
Test Range 300m
Other Specification:
Display 3.5 inch color LCD
Power Supply AC/DC adapter: Input: 100~240VAC, 50/60Hz, 0.4A; Output: 5V, 2.0A; Lithium battery: 3.7V, 4000mAh
Battery Standby Life ≥20h
Battery Working Hours ≥12h
Communication Micro USB
Data Storage Internal: 600 curves; External: TF card (not included)
Net Weight 0.4kg
Size 173*82*37mm
Operating Temperature -10 ~ +50°C
Storage Temperature -40 ~ +70°C
Relative Humidity 0~95% Non-condensing
Warranty 2 years
Standard Accessories:
Item Name Quantity
1 OTDR with FC Adapter 1pc
2 AC/DC Power Adapter 1pc
3 Data Line 1pc
4 SC Adapter for OTDR Port 1pc
5 User Manual 1pc
6 Calibration Certificate 1pc
7 Soft Bag 1pc
Optional Accessories:
Item Name Quantity
1 LC Adapter 1pc
2 ST Adapter 1pc
Ordering Information:
Model MAY400E
Connector None: FC/UPC and SC/UPC (default)

1. Manual