JW3109 Handheld Optical Light Source

Overview

The JW3109 Handheld Optical Light Source is a rugged and reliable test instrument designed for fiber optic network maintenance. Paired with an optical power meter, it provides a stable laser source to accurately measure fiber loss and characterize network links. This makes it an essential tool for field technicians working on FTTx, CATV, and telecommunication systems. Its ergonomic, portable design ensures it is ready for any job site.

This versatile fiber optic light source offers excellent stability and portability for in-field testing. It supports multiple wavelengths, including common single-mode (1310/1550nm) and multi-mode (850/1300nm) options. The intuitive user interface and clear backlit display allow for quick, effortless operation, even in low-light conditions. Consequently, the JW3109 streamlines the process of network installation, verification, and repair.

Key Features

• Dual Wavelength Output: Provides stable power for two wavelengths simultaneously to suit various testing needs.
• High Stability: Delivers exceptionally stable output power for consistent and repeatable measurements.
• Modulation Frequencies: Supports CW, 270Hz, 1KHz, and 2KHz for use with corresponding power meters and fiber identifiers.
• Backlit LCD Display: Features a large, easy-to-read screen with a backlight for operation in dark environments.
• Portable & Rugged Design: Compact and durable, this portable fiber tester is built for demanding field conditions.
• Long Battery Life: Operates for up to 45 hours on standard AA batteries, with a low-power indicator.
• Interchangeable Connectors: Comes with FC/PC connectors, with optional SC and ST adapters available for greater flexibility.

Applications

The JW3109 optical light source is an indispensable fiber optic tester for a wide range of tasks. Its primary use is in the maintenance and installation of telecom networks and CATV systems. It is also highly effective for fiber-to-the-home (FTTx) deployment. In laboratory settings, it serves as a stable signal source for research and development. In the field, technicians rely on it for continuity checks and evaluating fiber link attenuation.

Specifications

Advantages

Choosing the JW3109 Handheld Optical Light Source offers significant practical benefits. Its primary advantage is providing lab-grade stability in a device built for the field, ensuring all measurements are accurate and trustworthy. Moreover, its simple, one-handed operation and clear display reduce testing time and complexity, increasing technician productivity. The unit’s exceptional battery life means less downtime and more work accomplished on a single set of batteries.

Furthermore, this instrument is a cost-effective solution without compromising on performance. It provides the core functionality needed for most fiber loss tests at a fraction of the cost of larger, more complex units. Its robust construction ensures a long service life, even with daily use in challenging environments. Thus, the JW3109 represents a smart investment for any fiber optic professional.

FAQ (Technical & Product Questions)

1. What is a handheld optical light source used for?

A handheld optical light source is used with an optical power meter to test for loss (attenuation) in fiber optic cables. It provides a stable, calibrated light signal that is sent through the fiber, allowing technicians to verify link quality and troubleshoot problems.

2. How do you use the JW3109 with an optical power meter?

To perform a loss test, you first connect the JW3109 optical light source to one end of a fiber cable and an optical power meter to the other. You set both devices to the same wavelength (e.g., 1310nm). The difference between the source’s output power and the power received by the meter indicates the total loss in the link.

3. What is the purpose of the modulation frequencies (270Hz, 1KHz, 2KHz)?

Modulation adds a specific frequency to the light signal. This allows a compatible optical power meter or fiber identifier to lock onto the signal from your fiber optic light source, which is especially useful for identifying a specific fiber within a bundle of live fibers.

4. Can the JW3109 test both single-mode and multi-mode fiber?

Yes, but you must choose the correct model. The model with 850/1300nm wavelengths is for multi-mode fiber, while the model with 1310/1550nm wavelengths is for single-mode fiber. Models with four wavelengths are also available for maximum versatility.

5. What kind of battery does the JW3109 use?

The JW3109 operates on three standard AA 1.5V alkaline batteries. It can also be powered using an AC adapter for continuous use in a lab environment. The long battery life makes it a reliable portable fiber tester.

6. How do I change the wavelength on this optical light source?

Changing the wavelength is simple. You can cycle through the available wavelengths for your specific model by pressing the dedicated WAVE key on the front panel. The currently selected wavelength is clearly shown on the LCD display.

7. What does the low battery indicator mean?

When the low battery icon appears on the display, it indicates that the batteries are nearly depleted. While the JW3109 may continue to function for a short time, you should replace the batteries as soon as possible to ensure stable output power and accurate measurements.

8. What is CW (Continuous Wave) output?

CW or Continuous Wave is the standard, non-modulated output mode. It provides a constant, steady stream of light at the selected wavelength. This is the primary mode used for most standard fiber optic loss measurements with a power meter.