Simrad Rf300 Installation Manual !!top!! -
Mount the RF300 near the rudder stock. It must be installed on a flat, stable surface where the transmission link can move freely without hitting the hull or other components. Alignment:
Set the multimeter to DC Voltage. Measure across the feedback terminals on the autopilot computer board. You should read a steady 4.5 to 5.0 VDC . If 0V is present, check the autopilot computer fuse or internal board power. Preventive Maintenance Checklist
: Use the provided 10m (33ft) cable for direct connection to the autopilot computer. Standard wiring involves connecting to specific terminals (e.g., terminals 11 and 12 on older J101A junction units, where brown is signal and white is common). Technical Specifications Output Variable Frequency (3400Hz Center, 20Hz/degree) Cable 10 meters (twisted pair) Compatibility NAC-3, AC70, AD80, SD80, H5000 Pilot Computers Material Corrosion-resistant, sealed/potted electronics Configuration & Commissioning
center to its ball joint (Y2). This ensures a 1:1 mechanical relationship. Wiring & Connections : The simrad rf300 installation manual
Verify that the internal components do not bottom out. The RF300 safely measures angles up to , but standard boat rudders only rotate between ±35 and ±45 degrees. 4. Electrical Wiring & Interface
If the autopilot is shaky, the linkage rod might be binding or too loose.
The Simrad RF300 outputs a frequency-modulated signal (or a specific resistance curve depending on the legacy configuration) that connects directly to the autopilot computer or junction box (e.g., AC10, AC20, AC40, or NAC series computers). Wiring Color Code Mount the RF300 near the rudder stock
Use a 4.2 mm drill and 5 mm tap to attach the ball joint to the tiller arm. Wiring & Electrical Connection: The
Manually move the helm from hard-over port to hard-over starboard. Verify that the linkage moves freely without binding, hitting obstructions, or exceeding the mechanical limits of the RF300 arm. Wiring and Electrical Connections
: The distance from the rudder post center to the tiller pin must exactly match the distance from the RF300 shaft center to its arm pin. The standard distance is typically 140 mm (5.5 inches) . Measure across the feedback terminals on the autopilot
The Simrad RF300 connects to your autopilot computer via a CAN (Controller Area Network) bus, making integration straightforward for modern marine electronics systems. The RF300 is compatible with a wide range of Simrad autopilot computers, including the NAC-3, AC42, AC12, AD80, and many others.
If the frequency does not change while turning the shaft, or reads 0 Hz, the internal sensor is damaged and the unit must be replaced.