User Manual
Simrad HS50 Heading Sensor 
44  20221081 / F 
Re-calibration of the Sensor unit 
The direction of the Sensor unit relative to the vessel's heading 
has to be recalculated only if the Sensor unit has been moved or 
dismounted from its holder. Then the calibration procedure 
described in General section, page 28 has to be followed for re-
calibration of the heading. 
Processing unit 
No special maintenance is required. It is advisable, however, at 
the start of each season to make a visual inspection of the 
terminals below the bottom cover (terminal cover) and check all 
connections. 
Display unit 
The Display unit will under normal use require little 
maintenance. 
If the unit requires any form of cleaning, use fresh water and a 
mild soap solution (not a detergent). It is important to avoid 
using chemical cleaners and hydrocarbons such as diesel, petrol 
etc. 
Make sure that all open connectors on the Display unit are fitted 
with a protection cap. 
It is advisable at the start of each season to check all connections 
to the unit and cover with Vaseline or WD40. If the Display unit 
is not removed from the vessel, it should be covered with the 
white protection cover. 
Software upgrades 
Software upgrades with improvements and new functionality 
will regularly be offered. Download of new software version is 
performed from an external PC by utilizing the Ethernet port on 
the PC and the HS50 Processing unit. Some new software 
releases will also require a new PROMM installed in the 
Display unit. 










