The Sperry Marine 4881-AA Gyro Repeater is a digital remote indicator designed to display the true heading of a vessel. It receives heading information in NMEA 0183 / IEC 61162 format via an RS-422 communication channel from a master gyrocompass, such as the Sperry Marine NAVIGAT X Mk 1 or NAVIGAT X Mk 2.
This repeater is characterized by its rugged, waterproof construction (often aluminum alloy with powder coating, rated IP-66) suitable for harsh marine environments. It features a clear digital display (often showing heading in 0.1-degree increments) and external LED backlighting for visibility in varying light conditions. Control keys on the front panel allow for easy operation and synchronization with the master compass. It’s designed for straightforward installation and reliable, long-term performance as a crucial component of a ship’s navigation system.
Technical Specification
General:
- Function: Digital remote indicator for displaying vessel’s true heading.
- Compatibility: Designed for use with Sperry Marine master gyrocompasses, notably NAVIGAT X Mk 1 and NAVIGAT X Mk 2.
- Display: Digital, typically showing heading in 0.1-degree increments.
- Backlighting: External LED backlight for clear visibility in various lighting conditions.
Communication & Interfaces:
- Input Data Format: NMEA 0183 / IEC 61162 (standard marine serial data protocol).
- Communication Channel: RS-422 serial interface (for receiving heading information).
Electrical:
- Supply Voltage: 24 V DC (standard marine supply voltage).
- Power Consumption: Approximately 6 W.
Environmental:
- Operating Ambient Temperature: -25 °C to +55 °C.
- Storage Ambient Temperature: -25 °C to +70 °C.
- Degree of Protection: IP-66 (Ingress Protection rating, indicating it is dust-tight and protected against powerful water jets, making it suitable for exposed marine environments).
- Construction: Robust, waterproof housing, often made of aluminum alloy with powder coating.
Physical:
- Controls: Front panel control keys for operation and synchronization.
- Installation: Designed for straightforward installation. A protective cover is generally not required due to its robust design.
There are no reviews yet.