MX510/MX512 Operator & Installation Manual - Simrad Professional ...

Compass - External Compass Input & Magnetic Variation
Table
The MX51x will accept compass input using the NMEA 0183 data record of xxHDT,
xxHDG, xxHDM, xxHCC, xxHCD, xxVHW, or any of the above. The “xx” refers to the
Talker Identifier as specified in the NMEA 0183 standard. It will accept these data
records vitually from any talker ID, and from any version (1.5 or higher) of the NMEA
0183 standard.
To implement this feature, change Compass Connected to Yes.
Identify the appropriate input port that the compass connects to the CDU by using the
Change softkey.
Select whether or not the MX51x should give an alarm if data is not received on the input
port.
Select the compass type, either Magnetic, Gyro, or MX575. Only the NMEA 0183 records
identified above are accepted for the gyro input.
Magnetic:
Select the magnetic deviation method: either In Compass - the deviation is corrected
before being sent to the MX51x; or In Navigator - the deviation is corrected by editing a
deviation table (Edit Table softkey) in the MX51x.
Gyro:
Set the constant Gyro Heading Offset (or bias) if any.
Specify the input NMEA 0183 record for the Input Sentence. HDT, HDG, HDM, HCC, HCD,
VHW, or Any.
72 | Keypad & Display Descriptione