Mini Fiber OTDR JW3302S

The Mini Fiber OTDR JW3302S is a compact handheld optical time-domain reflectometer designed for FTTH, FTTx, telecommunications, fiber optic installation, maintenance, and fault troubleshooting. It combines OTDR testing with an optical power meter, visual fault locator, stable light source, event mapping, cable sequence testing, cable length measurement, and flashlight functions. With 1310 nm and 1550 nm testing wavelengths, up to 24 dB dynamic range, a 3.5-inch color display, and a 4000 mAh rechargeable battery, the JW3302S provides a practical all-in-one solution for field fiber technicians.

Product Features

OTDR Fiber Testing

The JW3302S helps technicians measure fiber length, loss, reflection events, and identify faults such as breaks, bends, connectors, and splice points.

Dual-Wavelength Testing

Supports 1310 nm and 1550 nm wavelengths for testing single-mode fiber networks and identifying faults at different wavelengths.

Optical Power Meter

The built-in optical power meter measures optical power from 800 nm to 1700 nm, helping technicians verify signal levels and troubleshoot fiber links.

Visual Fault Locator

The 650 nm visual fault locator provides visible red light for locating fiber breaks, bends, and connection problems.

Multiple Testing Functions

Combines OTDR, event map, optical power meter, stable light source, VFL, cable sequence testing, cable length measurement, and flashlight functions in one handheld instrument.

Portable Field Design

The compact 3.5-inch color LCD tester is designed for convenient transportation and extended field use.

Rechargeable Battery

The built-in 4000 mAh lithium battery provides more than 12 hours of measurement time, depending on operating conditions.

Product Specifications

• Brand: Joinwit
• Model: JW3302S
• Product type: Mini handheld fiber OTDR
• Fiber type: G.652 single-mode fiber
• OTDR wavelengths: 1310 nm and 1550 nm ±20 nm
• Dynamic range: 24 dB / 22 dB
• Event dead zone: 3 m
• Attenuation dead zone: 8 m
• Test range: 500 m to 60 km
• Pulse width: 3 ns to 10 us
• Ranging accuracy: ±(1 m + sampling interval + 0.005% x test distance)
• Loss accuracy: ±0.2 dB/dB
• Sampling points: 16K to 128K
• Sampling resolution: 0.05 m to 8 m
• Reflection accuracy: ±3 dB
• Internal storage: 600 or more test records
• External storage: TF card
• File format: SOR standard format
• Optical power meter range: 800 nm to 1700 nm
• OPM measurement range: -50 dBm to +26 dBm
• OPM accuracy: ±5%
• Light source wavelength: 1310 nm and 1550 nm
• Light source output power: At least -5 dBm
• VFL wavelength: 650 nm ±20 nm
• VFL output power: At least 10 mW
• VFL modes: Continuous, 1 Hz, and 2 Hz
• RJ45 cable length measurement: Up to 300 m
• Display: 3.5-inch color LCD
• Data interface: Micro USB
• Battery: 3.7 V, 4000 mAh lithium battery
• Battery measurement time: More than 12 hours
• Operating temperature: -10°C to +50°C
• Storage temperature: -40°C to +70°C
• Operating humidity: 0 to 95%, non-condensing
• Weight: Approximately 350 g
• Dimensions: 173 x 82 x 37 mm
• Applications: FTTH, FTTx, telecom networks, fiber installation, maintenance, fault detection, and access network testing