Leica AT930 Absolute Laser Tracker
| Brand | Leica |
|---|---|
| Origin | Switzerland |
| Model | Leica AT930 |
| Max Measurement Range | 160 m (diameter) |
| Horizontal Rotation | 360° |
| Vertical Pitch | ±145° |
| IP Rating | IP54 (IEC 60529) |
| Operating Temperature | 0 °C to 40 °C |
| Relative Humidity | Up to 95% (non-condensing) |
| Laser Class | Class 2, compliant with IEC 60825-1:2014 |
| Data Output Rate | 1000 Hz |
| Integrated Environmental Monitoring | Temperature, Pressure, Humidity |
| Power Options | Hot-swappable rechargeable battery & AC supply |
| Wireless Connectivity | Built-in Wi-Fi (IEEE 802.11 a/b/g/n/ac) |
| Onboard Imaging | High-resolution color panoramic camera (OVC) |
| Target Acquisition | PowerLock™ automatic target reacquisition |
| Measurement Principle | Absolute Interferometric Distance Measurement (AIFM) |
Overview
The Leica AT930 Absolute Laser Tracker is an industrial-grade metrology system engineered for high-accuracy, high-speed 3D coordinate measurement across large-volume workspaces—up to 160 meters in diameter. It implements Leica’s proprietary Absolute Interferometric Distance Measurement (AIFM) technology, which unifies the traceability and long-range stability of absolute distance measurement with the sub-micron resolution and real-time velocity response of heterodyne interferometry. Unlike conventional laser trackers requiring homing or encoder initialization, the AT930 delivers true “absolute” positional data without mechanical referencing—enabling immediate measurement upon power-up. Its fully integrated architecture incorporates an onboard environmental monitoring station (temperature, barometric pressure, and relative humidity), a high-resolution omnidirectional panoramic camera (OVC), and a ruggedized, IP54-rated enclosure validated per IEC 60529. Designed for deployment in production floors, aerospace assembly bays, shipyards, and calibration laboratories, the AT930 meets the stringent requirements of ISO 10360-12 (laser tracker performance verification) and supports traceable compliance with ASME B89.4.19 and VDI/VDE 2617 Part 19 standards.
Key Features
- PowerLock™ Automatic Target Reacquisition: Maintains uninterrupted measurement continuity by autonomously reacquiring the retroreflector within a ±30° horizontal and ±20° vertical field-of-view after beam interruption—eliminating manual intervention and reducing downtime.
- AIFM Core Technology: Combines absolute distance encoding with interferometric fringe counting to deliver simultaneous high accuracy (typical volumetric uncertainty < 15 µm + 6 µm/m) and dynamic tracking capability at up to 1000 Hz data output rate.
- Integrated Environmental Compensation: Real-time thermobaric correction applied directly on-device using calibrated internal sensors—no external weather station required—ensuring dimensional stability under fluctuating ambient conditions.
- Omnidirectional Vision Camera (OVC): 5-megapixel color panoramic imager provides remote visual confirmation of target position and spatial context, accelerating setup and enabling collaborative remote operation via tablet or laptop.
- Hot-Swappable Battery System: Dual lithium-ion battery modules support >8 hours of continuous wireless operation; seamless hot-swap capability ensures zero measurement interruption during extended field campaigns.
- Wi-Fi 5 (802.11ac) & Ethernet Dual-Mode Connectivity: Enables secure, low-latency remote control from Windows PCs, iOS/Android tablets, and web-based dashboards—fully compatible with Leica’s SpatialAnalyzer™ (SA) software suite.
- Center-of-Gravity Alignment (OTG Mode): Software-assisted optical axis alignment parallel to local gravity vector—critical for jig and fixture leveling, aircraft wing spar alignment, and large-part horizontal referencing tasks.
Sample Compatibility & Compliance
The Leica AT930 is optimized for use with standard spherically mounted retroreflectors (SMRs), including 0.5″, 1.0″, and 1.5″ diameter targets, as well as active targets such as the Leica T-Mac and iSpace series. It supports passive and active target configurations across metallic, composite, and thermoplastic surfaces without surface preparation. The system complies with IEC 60825-1:2014 (Class 2 laser safety), IEC 60529 (IP54 ingress protection), and electromagnetic compatibility standards IEC 61326-1 and IEC 61000-6-2/6-4. For regulated environments—including aerospace MRO facilities and medical device manufacturing—the AT930’s audit-ready firmware logging, user-access controls, and SA software configuration support 21 CFR Part 11 compliance when deployed with appropriate validation protocols.
Software & Data Management
The AT930 operates natively with Leica’s SpatialAnalyzer™ (SA) software—a NIST-traceable metrology platform certified for ISO/IEC 17025-compliant calibration workflows. SA provides full GD&T evaluation (ASME Y14.5 / ISO 1101), real-time kinematic simulation, automated report generation (PDF, XML, CSV), and integration with CAD models via STEP, IGES, or native CATIA/Creo/NX interfaces. All measurement sessions are time-stamped, digitally signed, and stored with full metadata—including environmental readings, target ID, operator login, and instrument status logs. Optional SA modules enable statistical process control (SPC), thermal drift modeling, and multi-station networked tracking for volume metrology applications.
Applications
The AT930 serves as a primary reference instrument in large-scale dimensional verification workflows: aircraft fuselage and wing assembly alignment; wind turbine blade geometry validation; ship hull section positioning; robotic cell calibration (ISO 9283); coordinate measuring machine (CMM) volumetric verification; and precision infrastructure surveying (e.g., particle accelerator tunnel alignment). Its portability, battery autonomy, and rapid setup make it equally suitable for on-site tooling certification, reverse engineering of legacy components, and first-article inspection in high-mix, low-volume production environments.
FAQ
Does the AT930 require warm-up time before achieving specified accuracy?
No—its thermally stabilized optics and real-time environmental compensation allow stable metrological performance immediately after power-on.
Can the AT930 operate outdoors under direct sunlight?
Yes, provided ambient temperature remains within 0 °C–40 °C and relative humidity stays below 95% non-condensing; however, reflective glare on SMRs may reduce acquisition reliability—use of matte-finish targets is recommended.
Is the AIFM measurement principle traceable to national standards?
Yes—AIFM distance measurements are traceable to the SI meter via the speed of light in vacuum, with calibration verified against NIST-traceable artifact standards per ISO 10360-12 Annex D.
What level of cybersecurity does the built-in Wi-Fi support?
Wi-Fi interface supports WPA2-Enterprise authentication, TLS 1.2 encrypted command channels, and configurable firewall rules—aligned with IEC 62443-3-3 SL2 requirements for industrial control systems.
How is firmware updated and version-controlled?
Firmware updates are delivered via signed .pkg files through Leica’s secure customer portal; each release includes SHA-256 checksums, revision history, and impact assessment documentation for GxP-regulated deployments.
