Simrad HS50 - Manual (Page 34)

Simrad HS50 Heading Sensor
26
20221081 / F
Differential corrections
The signal cable with the differential corrections is connected to
the terminal block P205 on the Processing unit for RS-422 input
signal, and P206 for RS-232 input signal.
In the Diff. corrections submenu the correct baud rate and
format for the signal must be set. If RTCM format is selected,
the correct RTCM Options must be selected to enable
differential corrections to be used in the position solution.
If data from more than one reference station are available on the
link, HS50 automatically uses the nearest reference station to
obtain the best solution. The default RTCM Option is MSB 1st
and 6 of 8.