ANSCHUTZ RAYTHEON MARINE GMBH 124-167 MOD 033 0611 CHANGE OVER SWITCH

Manufacturer: ANSCHUTZ (now part of Raytheon Anschütz, a leading manufacturer of marine navigation systems).
Part/Model Number: 124-167
Modification/Version: MOD 033
Order/Reference Number: 0611
Product Type: Change Over Switch (also commonly called a Transfer Switch or Selector Switch).

Primary Function:
This unit is a critical control component designed for dual-gyrocompass systems or systems with redundant power supplies. Its core function is to manually or automatically transfer control and signal input/output between a primary unit and a standby (secondary) unit without interruption to the connected navigation equipment.

Typical Use Case:
On vessels equipped with two Anschütz gyrocompasses (e.g., a Main Gyro and a Backup Gyro), this switch allows the navigation bridge to select which gyrocompass is supplying the true heading data to all connected repeaters and interfaced systems, such as:

• Radar

• Electronic Chart Display and Information System (ECDIS)

• Automatic Identification System (AIS)

• Automatic Radar Plotting Aid (ARPA)

• Voyage Data Recorder (VDR)

Key Features & Specifications:

1. System Integrity: Ensures continuous heading data availability. If the primary gyro fails or requires maintenance, the switch allows for immediate and seamless changeover to the secondary gyro, minimizing navigation risks.

2. Signal Management: Handles the transmission of synchronized 360-degree heading signals, typically in analog (synchro) or digital (NMEA 0183/SeaTalk) formats, depending on the system generation.

3. Control Logic: The “MOD 033” indicates a specific hardware or firmware modification from the base model 124-167, which may include improved relay logic, added protection circuits, or compatibility updates for newer system interfaces.

4. Physical Design:

   • Likely a panel-mounted switch unit for installation in a console or control panel.

   • The switch itself is probably a robust, rotary selector switch with clear markings (e.g., “GYRO 1,” “GYRO 2,” “OFF”).

   • May include status indicators (LEDs) to show which source is active.

   • Designed to meet marine environmental standards (resistance to vibration, humidity, and salt spray).

5. Wiring Hub: Acts as a central connection point, simplifying the cabling between the two gyro master units and the multitude of peripheral devices that require heading data.