RS120 - NO FIX being reported on Pathfinder Series Display or Multifunction Display
Raymarine's hsb & hsb2 Series Displays and Multifunction Displays have no inherent GPS capabilities. These displays rely on an external GPS data source to provide position, course over ground (COG), and speed over ground (COG) to the display. Raymarine's Raystar 120 GPS sensor (RS120) was produced during the timeframe that the hsb and hsb2 Series Displays were in production to satisfy the external GPS data source requirements of these displays. The RS120 GPS sensor was produced in SeaTalk and NMEA 0183 versions and feature a medallion on their upper surface specifying whether the sensor is the SeaTalk or NMEA variant.
Before beginning diagnostics, verify the following:
The following diagnostic can be used to troubleshoot a NO FIX condition for the RS120 SeaTalk (most common). Verify the following:
If the RS120 fails to fix or the fix is intermittent, then RS120 should be serviced by Raymarine's Factory Service Department or alternatively replaced with a Raystar 125 GPS Senstor (RS125) . If replacing the RS120 with a RS125, the RS125 can be spliced into the existing RS120 cable. If creating a splice, be certain to cut the cable in a manner that sufficient cable remains to permit a splice to be performed. The RS125 would be spliced to the RS120 (SeaTalk version) as follows: