DESCRIPTION
The HOLIGHT TL-512 Optical Light Source is an advanced handheld instrument engineered for fiber optic network construction, inspection, and maintenance.
It delivers highly stable dual-wavelength laser output for both single-mode and multimode fibers, ensuring precise link loss measurements and optical calibration.
Equipped with an ergonomic body, large backlit LCD, and automatic shutdown, TL-512 offers dependable performance for telecom, CATV, and FTTH technicians working in the field or lab.
Product Specifications
| Parameter | TL-512 Optical Light Source |
| Wavelength (nm) | 850 / 1300 or 1310 / 1550 (optional custom wavelengths) |
| Emitter Type | FP-LD (Fabry-Perot Laser Diode) |
| Output Power (dBm) | ≥ –7 dBm @ 850/1300 or 1310/1550 |
| Output Stability (dB) | ± 0.04 @ 20 °C (15 min) |
| Modulation Frequencies | CW / 270 Hz / 1 kHz / 2 kHz |
| Optical Connector | FC (standard), SC or ST optional |
| Fiber Type | Single-mode / Multimode |
| Display | LCD with Backlight |
| Auto Power-Off | 10 minutes (user selectable) |
| Power Supply | 3 × AAA (1.5 V) batteries |
| Battery Life | ≈ 40 hours continuous operation |
| Operating Temperature (°C) | –10 ~ +50 |
| Storage Temperature (°C) | –20 ~ +70 |
| Dimensions (mm) | 130 × 63 × 29 |
| Weight (g) | 160 |
| Origin | China |
Selection Notes
- Typically selected when teams need a portable dual-wavelength source to run standard link-loss measurements (with a compatible power meter) across either 850/1300 (MM) or 1310/1550 (SM) test workflows, including frequency-based identification when required.
- May not be appropriate for projects where crews cannot standardize the wavelength pair and modulation mode across sites or where the meter/test process is not aligned to those settings, since mixed configurations commonly reduce comparability and increase retesting during acceptance and maintenance.
Feature Details
- Dual-Wavelength Laser Output
Supports 850/1300 nm or 1310/1550 nm pairs, enabling accurate testing for both multimode and single-mode fibers in one compact tool. - High Stability Performance
FP-LD laser module maintains ±0.04 dB power stability for consistent readings during extended measurements. - Multiple Modulation Modes
Selectable CW, 270 Hz, 1 kHz, or 2 kHz modulation frequencies ensure compatibility with various optical power meters and test systems. - Intuitive LCD with Backlight
Large screen displays output wavelength, frequency, and battery status clearly under any lighting condition. - Energy-Efficient and Portable
Powered by three AAA batteries for up to 40 hours of operation; auto shutdown extends battery life for field engineers. - Durable Field-Ready Design
Robust housing resists impact and dust exposure, while the compact form fits comfortably in one hand or tool pouch.
Application Details
- Telecom Networks – Verify fiber continuity and loss in backbone and access networks.
- CATV Systems – Test optical distribution lines and monitor signal attenuation.
- FTTH Installation – Perform end-to-end optical verification during subscriber activation.
- Laboratories & R&D – Use as a stable optical source for calibration and measurement.
- Educational Institutes – Ideal for fiber optics training and hands-on learning modules.
Other Extended Information
Packing List
✔ TL-512 Optical Light Source × 1
✔ FC Connector × 1
✔ SC/ST Connector (Optional) × 1
✔ Soft Carrying Case × 1
✔ User Manual × 1
✔ AAA Batteries (Transport Approved) × 3
✔ Quality Certificate × 1
Additional Notes
- Custom wavelengths available upon request.
- SC/ST connectors can be provided based on requirements.
- Battery-powered for field portability.
FAQ
Q1: What fibers can the TL-512 test?
It supports both single-mode and multimode fibers, depending on the selected wavelength pair.
Q2: Is the output power adjustable?
The output power is factory-calibrated to ensure stability and accuracy; custom power levels can be ordered for OEM applications.
Q3: How do I select different wavelengths or modulation frequencies?
Use the λ key to switch wavelengths, and press the MODE key to toggle between CW / 270 Hz / 1 kHz / 2 kHz modes.
Q4: What is the expected battery life?
Approximately 40 hours of continuous operation using three AAA alkaline batteries.
Q5: Does it have auto power-off protection?
Yes, the device automatically shuts down after 10 minutes of inactivity to conserve energy.
Q6: Can the wavelength range be customized?
Yes, other wavelength combinations are available upon request for special or customized applications.
Q7: Which connectors are included?
FC is standard; SC and ST connector interfaces can be supplied upon request.
Q8: Is OEM branding available?
Yes, HOLIGHT supports OEM and ODM services, including housing color, logo, and label customization.
