KNS SUPERTRACK S4 Installation And Operation Manual page 17

NOTE: KA-70 ACU can receive the various format of NMEA, as follow: HDT; HDG;
HDM. KA-70 ACU(ver. E.1.23) can accept the gyro signal even though there is no
checksum as below.
$HEHDT,x.x,T*hh<CR><LF>
$HEHDG,x.x,x.x,a,x.x,a*hh<CR><LF>
*hh means checksum of format.
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