MAY430 Optical Network Tester

MAY430 Optical Network Tester - Front View
MAY430 Optical Network Tester - Rear View
MAY430 Optical Network Tester - Left Side
MAY430 Optical Network Tester - Right Side
MAY430 Optical Network Tester - Optical Ports
MAY430 Optical Network Tester - Standard Accessories

Standard Accessories

FC Adapter for OTDR

FC Adapter for OTDR Port (Standard)    

SC Adapter for OTDR

SC Adapter for OTDR Port (Standard)

Network Cable Tracker for MAY400 Mini OTDR

Network Cable Tracker (Standard)

EU Power Adapter

EU Power Adapter (For Selection)

US Power Adapter

US Power Adapter (For Selection)

UK Power Adapter - 1

UK Power Adapter (For Selection)

LC Adapter for OTDR

LC Adapter for OTDR Port (Optional

ST Adapter for OTDR

ST Adapter for OTDR Port (Optional)

MAY430 Optical Network Tester is a powerful tester, widely used in Metropolitan area network construction, network maintenance and emergency repair of fiber optic network. It is used to measure fiber length, loss, connection quality, RJ45 Ethernet cable sequence, length and tracking.


  • Integrated design, smart and rugged
  • FC/SC/ST connectors interchangeable
  • Automatic and expert test function
  • OTDR Viewer software for data analysis
  • Support USB Type C export data protection
  • Intelligent power saving management


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

1. Auto OTDR
There is no need to do complicated settings, one button operation.
2. Expert OTDR
It provides professional measurement and displays curve, list and map simultaneously.
3. Event Map
Event Map is similar to EXFO’s iOLM function, which can display events in user-friendly icons.
4. Optical Power Meter (OPM)
5. Visual Fault Locator (VFL)
Visual Fault Locator uses red laser of 650nm to locate broken fiber point and test fiber continuity.
6. Optical Light Source (Laser Source)
7. RJ45 Tracker
It can trace and locate the RJ45 network cable.
8. RJ45 Sequene
It can check wire map of RJ45 cable.
9. RJ45 Length
It can measure the length of RJ45 cable.
10. Laser Distance Meters
It includes 12 functions: Single, Continuous, Addition, Subtraction, Angle, Hypotenuse, Height (1), Height (2), Triangle Area, Rectangle Area, Volume, and Speed.
11. Optical Loss Test
Optical Light Source (OLS) can run in the background. Open OLS first and then open OPM to test insertion loss.
When OLS and OPM are used together, TWINS function can be opened to identify the wavelength and frequency of the tester laser source.

Model MAY430-D28 MAY430-D30 MAY430-D32 MAY430-P26 MAY430-P28 MAY430-C26 MAY430-C28 MAY430-MD24
Wavelength 1310/1550nm 1625nm 1650nm 850/1300nm
Dynamic Range 28/26dB 30/28dB 32/30dB 26dB 28dB 26dB 28dB 22/24dB
Fiber Type SMF MMF
Event Dead Zone 1.2m
Attenuation Dead Zone 5m
Measurement Range 500m, 1km, 2km, 4km, 8km, 16km, 32km, 64km, 100km
Measurement Pulse Width 3ns, 5ns, 10ns, 20ns, 30ns, 50ns, 80ns, 160ns, 320ns, 500ns, 800ns, 1us, 2us, 3us, 5us, 8us, 10us, 20us
Ranging Accuracy ±(1m + Sample interval + 0.005%×Test distance)
Sampling Resolution 0.05m~8m
Samping Points 256,000 points
Linearity ≤0.05dB/dB
Loss Threshold 0.01dB
Loss Resolution 0.001dB
Range Resolution 0.001m
Refraction Setting 1.00000~2.00000, 0.00001 step
Refraction Accuracy ±3dB
File Format SOR standard file format
Laser Safety Level Class II
Adapter FC (Interchangeable SC adapter)
Language Chinese, English, Traditional Chinese, French, Korean (Select one language)
2. Optical Power Meter
Wavelength Range (±20nm) 800~1700nm
Calibrated Wavelength 850/980/1300/1310/1490/1550/1625/1650nm
Test Range Type A: -50~+26dBm (default); Type B: -70~+10dBm (optional)
Tone Detection CW, 270, 330, 1k, 2kHz
Resolution 0.01dB
Uncertainty ±5%
Auto Wavelength Recoginition Support
Connector Universal 2.5mm (FC/SC/ST)
3. Optical Light Source
Emitter Type FP-LD
Working Wavelength Same as OTDR
Output Power ≥-5dBm
Modulation Frequency CW/270/330/1k/2kHz
Accuracy CW, ±0.5dB/15min (Test after 15 minutes of preheating)
Auto Wavelength Recoginition Support
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.
3.3. Optical Light Source can run in the background, but will shut off during OTDR testing.

4. Visual Fault Locator
Wavelength (±20nm) 650nm
Power ≥10mW
Mode CW/1Hz/2Hz
Laser Safety Level Class III
Connector Universal 2.5mm (FC/SC/ST)

Note: Visual Fault Locator can run in the background.

5. RJ45 Sequene, RJ45 Length
Test Range 300m
6. RJ45 Tracker
Mode Digital tracking
Online/Line Pair Tracking Support
Test Range 300m
7. Laser Distance Meters
Test Range 0.05~40m
Accuracy ±2.0mm
Laser Type 620~690nm
Laser Safety Level Class II, <1nW
Other Specification:
Display 4.3 inch full-view capacitive touch screen, support multi-touch, TFT 800×480 resolution
Power Supply AC/DC adapter: AC: 100~240V, 50/60Hz, 5V, 2A; Lithium battery: 3.7V 4,000mAh
Battery Standby Life ≥20h
Battery Working Hours ≥10h (under high brightness)
Data Interface USB Type C
Data Storage 100,000 curves; 8G internal storage
Weight 400g (including battery)
Size 174*92*45mm
Operating Temperature -10 ~ +50°C
Storage Temperature -40 ~ +70°C
Relative Humidity < 95% Non-condensation
Standard Accessories:
Item Name Quantity
1 OTDR with FC adapter for OTDR/LS port and Lithium battery 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 with shoulder strap 1pc
8 Network Cable Tracker 1pc
9 Warranty card 1pc
Optional Accessories:
Item Name Quantity
1 LC Adapter for OTDR port 1pc
2 ST Adapter for OTDR port 1pc
Ordering Information:
Model MAY430
Wavelength and Dynamic Range D28: 1310/1550nm, 28/26dB
D30: 1310/1550nm, 30/28dB
D32: 1310/1550nm, 32/30dB
P26: 1625nm, 26dB
P28: 1625nm, 28dB
C26: 1650nm, 26dB
C28: 1650nm, 28dB
MD24: 850/1300nm, 22/24dB
Power Meter A: -50~+26dBm (default)
B: -70~+10dBm
Connector None: FC/UPC and SC/UPC (default)

1. Manual