LM-3 series optical multimeter with integrated OLS, OPM, and VFL for precise fiber power, loss, continuity, and fault testing.
Need a custom spec or OEM branding on this product? Talk to our engineering team.
Every batch, before shipment
Manufacturing
Custom specs and branding
Americas, Europe and Africa
The LM-3 Series Optical Multimeter is a high-performance, rugged testing instrument that integrates an Optical Light Source (OLS), Optical Power Meter (OPM), and Visual Fault Locator (VFL) into a single, portable unit. Designed for installation, maintenance, and troubleshooting of fiber optic networks, it offers technicians a complete solution for measuring optical power, loss, continuity, and pinpointing faults.
With auto-wavelength recognition, modulation frequency detection, and the ability to store up to 1000 test results, the LM-3 series streamlines workflow and improves efficiency. Its LCD display with backlight ensures clear visibility in all lighting conditions, and the USB port allows seamless data transfer for reporting and analysis.
The integrated laser source provides stable output across multiple wavelengths, including 1310/1490/1550 nm, while the built-in 10 mW Visual Fault Locator enables quick location of breaks or defects in fiber. Interchangeable connectors and a wide operating temperature range make it adaptable to various field conditions.
Compact, durable, and equipped with advanced measurement accuracy of ±0.2 dB, the LM-3 Series Optical Multimeter is the ideal all-in-one tool for both field and laboratory applications in fiber optic testing.
Combines OLS, OPM, and VFL in one rugged device
Auto-wavelength recognition for efficient operation
Up to 1000 test result storage with USB data transfer
Built-in 10 mW Visual Fault Locator
High accuracy: ±0.2 dB
Stable laser source output for precise measurements
Backlit LCD display for use in any lighting environment
Auto power-off with battery indicator
Interchangeable FC/PC and universal 2.5 mm connector
Optional SC, ST, and LC adapters available
| Specification | Details |
|---|---|
| Model | LM-3TD / LM-3CD / LM-3TP / LM-3CP |
| Calibration Wavelength | 850 / 980 / 1300 / 1310 / 1490 / 1550 / 1625 nm |
| Connector | FC/PC & 2.5 mm universal |
| Display Units | dB / dBm / mW / μW |
| Accuracy | ±0.2 dB |
| Modulation Frequency Detection | 270 Hz / 1 kHz / 2 kHz |
| Measuring Range | LM-3TD / LM-3TP: -70 to +10 dBm; LM-3CD / LM-3CP: -50 to +26 dBm |
| Laser Source Wavelength | 1310 / 1550 nm (TD/TP) ; 1310 / 1490 / 1550 nm (CD/CP) |
| Laser Output Power | ≥ -5 dBm @ 1310/1490/1550 nm; ≥ -10 dBm @ 850/1300 nm |
| Output Stability | Short term: ±0.05 dB @ 1490 nm; ±0.2 dB @ other wavelengths; Long term: ±0.2 dB @ 1490 nm; ±0.8 dB @ other wavelengths |
| Visual Fault Locator | Wavelength: 650 nm; Output Wave: CW & 2 Hz; Output Power: 10 mW |
| Power Supply | 3 × AA batteries; AC/DC adapter |
| Operating Temperature | -10°C to +50°C |
| Storage Temperature | -20°C to +70°C |
| Dimensions | 170 × 82 × 35 mm |
LM-3 series, optical multimeter, OLS/OPM/VFL tester, fiber optic power meter, laser source, visual fault locator, fiber continuity tester
Our engineering team can confirm compatibility, custom specs and OEM branding options.
