HengaoDe H24515 Red Laser Fault Locator Pen
| Brand | HengaoDe |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | H24515 |
| Pricing | Upon Request |
Overview
The HengaoDe H24515 Red Laser Fault Locator Pen is an essential handheld optical troubleshooting tool engineered for rapid visual identification and localization of faults in single-mode and multimode fiber optic cables. Operating at a stable 650 nm visible red wavelength, it employs quantum-well laser diode (LD) technology to deliver consistent, eye-safe output with high coupling efficiency into standard 2.5 mm ferrule connectors (FC/SC/ST compatible). Its core function relies on visible light transmission through the fiber—enabling technicians to detect macro-bends, breaks, poor splices, connector misalignments, and mechanical splice imperfections by observing light leakage at fault points. Designed specifically for field use in telecom, CATV, and enterprise network environments, the device meets IEC 60825-1 Class II laser safety requirements and undergoes rigorous 8-hour thermal stress testing at 50 °C prior to shipment to ensure long-term reliability under operational conditions.
Key Features
- Three operational modes: Continuous emission (Constant ON), fast flashing (~5 Hz), and slow flashing (~1 Hz) — enabling flexible signal differentiation in multi-fiber or congested duct environments.
- Constant-power output circuitry maintains stable optical power across battery discharge cycles, minimizing measurement drift during extended diagnostics.
- Aluminum alloy housing with nano-engineered surface treatment provides ESD protection, corrosion resistance, and mechanical robustness against drops and abrasion.
- Integrated optical port guard cap prevents accidental contamination or damage to the laser output interface when not in use.
- Ergonomic pen-style form factor with integrated switch guard ring minimizes unintended actuation during transport or pocket storage.
- Fiber-coupled design ensures >90% launch efficiency into standard 2.5 mm connectors without alignment tools or adapters.
Sample Compatibility & Compliance
The H24515 is compatible with all common fiber types used in access and backbone networks, including ITU-T G.652.D single-mode fiber and OM1–OM5 multimode fibers (50/125 µm and 62.5/125 µm). It supports direct coupling via universal 2.5 mm physical contact (PC) interfaces and is routinely deployed in scenarios where OTDR dead zones prevent accurate fault detection—such as near patch panels, splitters, or active equipment ports. The instrument complies with IEC 60825-1:2014 (Edition 3) for Class II laser products and conforms to RoHS Directive 2011/65/EU. While not intended for quantitative optical loss measurement, its qualitative fault indication capability aligns with industry best practices outlined in Telcordia GR-326-CORE and ANSI/TIA-568.3-D for fiber continuity verification.
Software & Data Management
As a standalone optical diagnostic tool, the H24515 does not incorporate embedded firmware, wireless connectivity, or data logging functionality. Its operation is entirely hardware-based and requires no software installation, driver configuration, or calibration maintenance. This architecture eliminates dependency on operating systems, firmware updates, or cybersecurity patching—making it suitable for secure environments governed by NIST SP 800-53 controls or ISO/IEC 27001-compliant infrastructure. All functional settings are controlled manually via tactile push-button switching; no configuration files, audit trails, or user authentication mechanisms are present.
Applications
- Visual fault location within OTDR blind zones (<2 m from launch point), especially critical for FTTx drop cable verification and last-meter fiber handover.
- End-to-end fiber identification in multi-fiber trays or crowded distribution frames using distinct flash patterns to avoid misconnection.
- Optimization of mechanical splice performance by observing light scatter intensity and uniformity along the splice region.
- Routine pre- and post-installation continuity checks during structured cabling deployments per ISO/IEC 11801 and ANSI/TIA-568 standards.
- Field validation of passive optical components—including splitters, WDM filters, and attenuators—for gross insertion loss anomalies.
FAQ
Is the H24515 suitable for use with single-mode fiber?
Yes—it couples efficiently into standard SMF-28e+ and G.652.D fibers with typical launch power exceeding –3 dBm at the output connector.
What is the expected battery life under continuous operation?
Using two standard AAA alkaline cells, the device delivers ≥12 hours of continuous emission or up to 72 hours in slow-flash mode.
Can this tool be used to measure optical loss quantitatively?
No—the H24515 is a qualitative fault locator only. For loss measurement, an optical power meter and light source combination compliant with IEC 61280-2-1 is required.
Does the unit require recalibration after extended field use?
No—laser diode output stability is maintained via constant-current drive circuitry; no periodic recalibration is specified or supported.
Is the laser output eye-safe under normal operating conditions?
Yes—classified as IEC 60825-1 Class II, with maximum accessible emission limit (AEL) of 1 mW. Direct intrabeam viewing should still be avoided per ANSI Z136.1 guidance.
