$PATC,IIHDG,RID,ssss<CR><LF> where ssss is the serial number in ASCII decimal.
5.11 Configure the output sentence structure and type:
$PATC,IIHDG,CFG,abc<CR><LF>
[Replies with the standard acknowledge sentence $PATC,HCHDG,ACK<CR><LF>. ]
Where 'a' is heading sentence type as follows:
a=0 : $HCHDG,hhh.h,,,,<CR><LF>
a=1 : $HCHDT,hhh.h,T<CR><LF>
a=2 : $HCHDM,hhh.h,M<CR><LF>
a=3 : $HCHCC,hhh.h<CR><LF>
a=4 : $HEHDT,hhh.h<CR><LF>
a=5: no heading data sent
hhh.h is the compass heading in degrees
(this compass heading field will be omitted when auto-calibration is in process)
and 'b' is sentence end structure as follows:
b=0 : direction sentence will NOT include checksum nor unit ID serial number.
e.g. $HCHDG,hhh.h,,,,<CR><LF>
b=1 : direction sentence will include a checksum.
e.g. $HCHDG,hhh.h,,,,*cc<CR><LF> (cc is the checksum)
b=2 : include the serial number.
e.g. $HCHDG,hhh.h,,,,*ssss<CR><LF> (ssss is the unit’s serial number)
and where 'c' has the following significance:
c = 0 or is missing means no ROT
c = 1 ROT with 8s average
c = 2 ROT with 16s average
c = 3 ROT with 32s average
c = 4 ROT with 64s average
The form of the transmitted sentence is:
$HFROT,zxxx.x,A*cc<CR><LF>
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