I. NLM17500A Laser Rangefinder Module Technical Specifications

High-Energy Telemetry Engine for Long-Range Strategic Reconnaissance.

The NLM17500A Laser Rangefinder Module utilizes a 1535nm DPSS architecture to achieve a strategic measuring range of ≥17,500m for 3m×3m targets and ≥6,000m for 1.7m×0.5m targets. Under test conditions of 10km visibility and 80% RH, this Class 1 eye-safe Laser Rangefinder Module sustains a ≥98% hit rate and ±1m precision through its Φ65mm high-aperture receiver and Φ29mm transmitter. Designed for UAV payloads and drone surveying, the ≤596g Laser Rangefinder Module supports reliable telemetry across a -40℃ to +60℃ thermal range, integrating via RS422 and a J30J-9ZKP connector (DC 18V-36V) to provide mission-critical data with a ≤120m blind zone and ≤50m resolution.

Laser Rangefinder Module

17.5km Strategic Ranging

UAV Reconnaissance Sensor

1535nm DPSS Technology

Long-Range Telemetry Core

II. Engineering Advantages & Signal Integrity

Long-Path Extinction Mitigation: Oversized Φ65mm reception optics ensure reliable signal acquisition at extreme strategic ranges (≥17,500m).
Strategic Target Resolution: High-resolution signal processing (≤50m) and distance gating facilitate detection in complex cluttered environments.
Aerospace Power Profile: Optimized for endurance-sensitive drones with low standby power (≤2.5W) and broad voltage compatibility (18V-36V).
Thermal-Mechanical Stability: Reinforced chassis maintains optical axis integrity (≤0.3mrad) across extreme environmental shifts and vibration.

III. Application Scenarios for 17.5km Ranging Systems

Drone Laser Rangefinder Modules for UAV Payloads

Designed for integration into high-altitude strategic UAV payloads. The 17.5km range and covert 1535nm wavelength provide critical distance data for border reconnaissance, maritime surveillance, and standoff target positioning.

Strategic Mapping & Infrastructure Surveying

Delivers ±1m accuracy for large-scale topographical mapping, forestry surveys, and long-range infrastructure monitoring where stable distance telemetry is required in harsh outdoor environments.

IV. NLM17500A Technical Specification Matrix

Specification Item	NTRON Standard Technical Values
Range (3m×3m Large Target)	≥ 17,500m (Reflectivity 0.3, Visibility 10km, RH 80%)
Range (1.7m×0.5m Small Target)	≥ 6,000m (Reflectivity 0.3, Visibility 10km, RH 80%)
Accuracy (RMS) & Hit Rate	± 1m \| ≥ 98%
Laser Technology	1535nm ± 10nm (DPSS) \| Class 1 Eye-Safe
Blind Zone & Resolution	≤ 120m \| ≤ 50m
Weight & Dimensions	≤ 596g \| ≤ 144mm × 108mm × 75mm
Operating/Storage Temp.	-40℃ to +60℃ \| -55℃ to +70℃
Repetition Frequency	Single-shot, 1Hz
Communication Interface	RS422 (Baud Rate 38400)
Power Metrics	Standby ≤ 2.5W \| Average ≤ 6W
Supply Voltage	DC 18V ~ 36V

V. OEM Integration & Electrical Interface

Military-Standard Connectivity: Employs the J30J-9ZKP connector for secure power and communication links in aerospace platforms.
System Intelligence: Real-time acquisition of temperature, frequency status, and command-initiated self-tests.
Dynamic Signal Logic: Features user-programmable range gating and first/last target selection for cluttered mission profiles.

Pin No.	Label	Signal Character (Laser Side)
P-1	NC	No Connection
P-2 / P-3	RS422_RXD+/-	Laser Serial Port Receive (Positive/Negative)
P-4 / P-5	RS422_TXD-/+	Laser Serial Port Transmit (Negative/Positive)
P-6 / P-7	VIN+	Power Supply Input Positive (DC 18V-36V)
P-8 / P-9	GND_P	Power Supply Ground (GND)

VI. Mechanical and Optical Interface Specifications (17.5km Range)

The structural layout of the NLM17500A is optimized for aerospace mounting, featuring a high-precision 3 × Φ5.4 through-hole pattern for sub-milliradian axis alignment.

NLM17500A Laser Rangefinder Module Dimensions and Optical Interface

Effective Aperture: Tx Φ 29mm, Rx Φ 65mm | Mounting: 3 × Φ 5.4 holes for strategic platform integration.

Optical Window Geometry: Integrated Φ29mm laser emission window and Φ65mm large-aperture reception window for long-range photon capture.
Mechanical Alignment: Secured via a 3 × Φ5.4 pattern, ensuring stable mechanical-to-optical datum references under vibration.
Warning: Avoid direct exposure to sunlight and electrostatic discharge. ESD-safe handling is mandatory for J30J-9ZKP connector termination.

VII. Laser Rangefinder Module Universal Adaptability

The Laser Rangefinder Module NLM17500A provides a standardized, high-performance distance measurement solution for UAV payloads and strategic monitoring systems. Its combination of an 17.5km reach, ±1m accuracy, and a 596g aerospace-hardened chassis ensures seamless integration into advanced electro-optical gimbals. With full support for RS422 communication and a wide 18V-36V power input, it empowers system integrators to achieve reliable standoff reconnaissance and maritime surveillance across global strategic sensor networks.