The TL-510 Mini Optical Power Meter is a high-precision fiber optic testing device, developed for installation, maintenance, and troubleshooting of optical communication networks. Covering a wide wavelength range of 800–1650 nm, it supports six pre-calibrated wavelengths for accurate fiber link assessment.
Designed with a durable, compact, and lightweight build, this mini handheld tester is ideal for fiber technicians working in the field. With its long-lasting battery, high measurement accuracy, and broad connector compatibility, the TL-510 is an essential tool for fiber optic professionals worldwide.
Product Specifications
| Parameter | TL-510-A | TL-510-C |
| Measurement Range (dBm) | -70 to +10 dBm | -50 to +26 dBm |
| Wavelength Range (nm) | 800–1650 | 800–1650 |
| Calibrated Wavelengths | 850, 1300, 1310, 1490, 1550, 1625 nm | 850, 1300, 1310, 1490, 1550, 1625 nm |
| Detector Type | InGaAs | InGaAs |
| Accuracy (@-10 dBm, 22°C) | <±3% | <±3% |
| Resolution | 0.1% (linearity), 0.01 dBm (non-linearity) | 0.1% (linearity), 0.01 dBm (non-linearity) |
| Working Temperature | -10°C to +50°C | -10°C to +50°C |
| Storage Temperature | -20°C to +70°C | -20°C to +70°C |
| Relative Humidity | 90% (+30°C) | 90% (+30°C) |
| Connector Type | FC/PC, SC/PC, ST/PC (LC Optional) | FC/PC, SC/PC, ST/PC (LC Optional) |
| Power Supply | 3 × AAA batteries | 3 × AAA batteries |
| DC Power Supply (Optional) | AC 90–240V (Special Order) | AC 90–240V (Special Order) |
| Working Hours | >120 hours (without backlight) | >120 hours (without backlight) |
| Weight | 160 g | 160 g |
| Dimensions (mm) | 130 × 69 × 29 | 130 × 69 × 29 |
Selection Notes
Typically selected when field teams need a compact meter with six pre-calibrated wavelengths and long battery life for routine FTTH/PON checks, and they can standardize the connector workflow (including LC adapter handling if used).
May not be appropriate for organizations that cannot standardize the TL-510-A vs TL-510-C range variant and wavelength-selection routine across crews, since mixed range capability and inconsistent settings commonly reduce comparability in troubleshooting and acceptance testing.
Feature Details
- Mini, Handheld, and Portable: Perfect for on-site fiber testing.
- High Accuracy with InGaAs Detector: Ensures precise power measurement across multiple wavelengths.
- Flexible Power Options: Supports AAA batteries or optional DC power input for extended operation.
- Robust & Durable Design: Built for field use in challenging environments.

Application Details
- Passive Optical Network (PON) Testing: Verifies fiber signal strength in FTTH/FTTB/FTTX applications.
- Optical Cable Maintenance: Ensures proper fiber performance during network troubleshooting.
- Lab & R&D Testing: Provides accurate power readings for fiber optic component testing.
Other Extended Information
Packing List
✔ TL-510 Optical Power Meter × 1
✔ SC Connector × 1
✔ FC Connector × 1
✔ Soft Carrying Case × 1
✔ User Manual × 1
✔ AAA Batteries (Transport Approved) × 3
✔ Quality Certificate × 1
Additional Notes
- Other wavelengths are available upon request.
- DC power supply requires a special order.
- Wide power input support (AC 90-240V) for extended use.
FAQ
Q1: What is the TL-510 Mini Optical Power Meter used for?
It’s used for measuring optical power in fiber networks, ensuring signal strength and system accuracy.
Q2: What wavelength range does it support?
It operates across 800–1700 nm and supports six pre-calibrated wavelengths.
Q3: What’s the difference between TL-510-A and TL-510-C?
The A model measures -70 to +10 dBm, while the C model offers a wider range of -50 to +26 dBm.
Q4: How long can the device operate on batteries?
It runs for over 120 hours without backlight using three AAA batteries.
Q5: Which connectors are supported?
FC, SC, and ST are standard; LC connectors are optional.
Q6: Can it be powered externally?
Yes, an optional DC power supply (AC 90–240V) is available for extended operation.
Q7: Is this device suitable for FTTH and PON testing?
Yes, it’s ideal for FTTH, FTTB, and FTTX optical power measurements.







