Furuno VR-3000 Operator's Manual page 44

HDG - Heading Magnetic
$--HDG,x.x,x.x,a,x.x,a*hh<CR><LF>
| | | | | |
| | | | | +--------- 4
| | | +--+----------- 3
| +----+----------------- 2
+------------------------ 1
1. Magnetic sensor heading, degrees
2. Magnetic deviation, degrees E/W
3. Magnetic variation, degrees E/W
4. Checksum
HDT - Heading True
$--HDT, x.x, T*hh<CR><LF>
$--HDT,x.x,T*hh<CR><LF>
| | |
| | +--------- 2
+----+----------- 1
1. Heading, degrees true
2. Checksum
HSS - Hull stress surveillance systems
0 1 2 3
$xxHSS, c--c, x.x, A, *hh<cr><lf>
0: Header 1: Measurement point ID
3: Data status, A = data valid, V = data invalid 4: Check-sum
Note: This must be verified by Ship Classification. VDR is required to log such data if HSS is fitted
on ship.
34
4
2: Measurement value