Introduction
The AHD-POS 10 is a navigation lights monitoring system designed to ensure the proper functioning of a ship's navigation lights, which are crucial for indicating the vessel's heading and preventing collisions at sea. These lights must be operational from sunset to sunrise and during restricted visibility conditions. The system is mandatory for certified ships and monitors up to ten lights, including masthead, portside, starboard side, and stern lights.

Functional Description
The AHD-POS 10 monitors the status of navigation lights, detecting whether they are on, off, or defective. It is installed in the electrical circuit between the switch and the lamp. The system uses CAN-Bus for communication and provides both optical and acoustic alarms in case of lamp failure. The alarms are displayed on a color monitor, which switches to an alarm page when a fault is detected. The system supports both AC and DC lamps and includes semiconductor fuses to prevent overcurrent.

Apparatus Assembly
The system includes a pluggable terminal block for connecting up to ten lamps, power supply inputs, and collective alarm relay outputs. It is designed for installation inside a distribution box or switch cabinet and requires a termination resistor if no additional devices are connected.

Installation
The AHD-POS 10 must be installed between the switch and the lamp, with specific terminals for each lamp. The color display connects via CAN-Bus, and the system can monitor up to ten lamps.

Technical Data

• AHD-POS 10: Power supply: 18-32 VDC, Power consumption: 150 mA, Operating temperature: -10°C to 65°C, Weight: 0.55 kg, Degree of protection: IP 00, Interfaces: 1 x CAN, 1 x RS 232.
• Color Display: Power supply: 9-32 VDC, Power consumption: 450 mA, Resolution: 400 x 240 pixels, Operating temperature: -10°C to 85°C, Weight: 1.5 kg, Degree of protection: front IP 67, rear IP 65.

Conclusion
The AHD-POS 10 is a robust system for monitoring navigation lights, ensuring maritime safety by providing timely alerts for any light failures. It is essential for compliance with international maritime regulations.