JW3703 Optical Time-Domain Reflectometer (OTDR)

JW3703

Optical Time-Domain Reflectometer (OTDR)

High-dynamic-range OTDR for long-distance fiber testing, network maintenance, and fault diagnosis

The JW3703 optical time-domain reflectometer (OTDR) is designed for FTTH, metropolitan area networks, and secondary backbone communication systems, this high-performance OTDR delivers accurate fiber measurements for engineering construction, line maintenance, emergency testing, and manufacturing research. Featuring a 5.6-inch capacitive touchscreen, the OTDR supports long-distance testing over 180 km with up to a 45 dB dynamic range. It is powered by a high-capacity 5200 mAh polymer lithium battery supporting smart power management and portable power bank charging.

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Functions Overview

Features

Dynamic Range: Maximum 45 dB for testing over 180 km
Sampling Resolution: Up to 256k sampling points with resolution down to 2.5 cm
Event Dead Zone: Minimum 0.8 m
Supported Wavelengths: Up to four wavelengths (1310/1550/850/1300 nm) and live-fiber testing (1310/1550/1625 nm)
Display & Language: 5.6-inch capacitive touchscreen with 8 interface languages
Auto OTDR: One-touch automated testing without complex settings
Expert OTDR: Simultaneous display of measurement results, trace, list, and map
Event Map: Clear link visualization for event analysis
Intelligent Diagnostics: Supports 1:32 and 1:64 optical splitter testing
Comprehensive Measurements: Measures length, loss, connection quality, and event parameters
Optical Power Testing: Integrated wavelength-selective optical power meter and standard OPM
Light Source: Built-in optical light source with continuous and modulated modes
Visual Fault Locator (VFL): Built-in red light source for visual fault tracing
Additional Utilities: RJ45 cable tracking, multi-fiber testing, loss testing, fiber end-face inspection, and PON terminal status verification
System & File Management: Automatic communication optical signal monitoring, standard SOR file format support, and onboard file management

Specifications

Dimensions	177mm×109mm×37mm (Excluding soft rubber protection)
Weight	0.8kg (with battery)
Operating Wavelength (nm)	1310/1550	1310/1550/1625	1310/1550/850/1300
Max. Dynamic Range (dB)	32/30	37/36/37	37/36/28/26
	37/35
	40/38	42/40/42
	42/40	45/43/43
	45/43	42/40/40/40
Event Dead Zone	0.8m
Attenuation Dead Zone	5m
Distance Accuracy (m)	±(0.75m + distance×0.0025% + sampling interval) Excluding refractive index error
Resolution (m)	0.025, 0.05, 0.1, 0.2, 0.5, 1, 2, 4, 8, 16, 32
Distance Range (km)	0.4, 0.8, 1.6, 3.2, 6.4, 16, 32, 64, 128, 256, 512
Pulse Width (ns)	5, 10, 30, 80, 160, 320, 640, 1280, 5120, 10240, 20480
Max. Sampling Points	256k
Linearity (dB/dB)	0.03
Loss Resolution (dB)	0.001
Refractive Index Setting Range	1.00000 to 1.99999 (Step: 0.00001)
Distance Units	Kilometer, Meter, Kilofoot, Foot
Display	5.6" TFT Color LCD (Capacitive Touchscreen)
Optical Connector	FC/UPC (Standard), SC/UPC (Optional)
Language	Simplified Chinese, English. Additional languages upon request
External Ports	USB Type-C, microSD
Power Supply	AC/DC Adapter: Input: AC100V to 240V, 50/60Hz Output: DC 12V/2A Internal Li-ion Battery: 3.7V, 5200mAh
Battery Life	≥8 hours (High brightness standby)
Environmental Conditions	Operating Temp: 0℃ to +40℃ (Charging: 5℃ to 40℃) Storage Temp: -20℃ to +60℃ Humidity: 5% to 95% (Non-condensing)

Typical Applications

Telecom Network Construction

Low-Voltage Systems Engineering

Fiber Network Installation & Maintenance

Residential Broadband Deployment

Monitoring & Surveillance Network Installation

Fiber Link Troubleshooting

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Fiber Optic Test Equipment Manufacturer

Since 1998

We provide various testing equipment, measuring equipment, and monitoring equipment for the optical communication industry, and have accumulated a large number of professional technologies and mature solutions.

Engage in the research and development and manufacturing of desktop and handheld photoelectric testing instruments
The annual output of photoelectric testing equipment reaches 500,000 units
Passed ISO9001 series quality certification, 14001 environmental certification, CE certification, FC certification, RoHS certification, and many other international certificates
All products have 100% independent intellectual property rights, and provide OEM/ODM services
Our products have been recognized by Japan's NTT Communications, South Korea's SK Telecom, Deutsche Telekom, and the United States' Verizon, and have reached cooperation