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RoyalTek RGM-3000/REB-3000
GPS Module Operational Manual)
26
A0A20003 – Start Sequence and Payload
Length
8A011E – Payload
00A9B0B3 – Message Checksum and
End Sequence
Table 28 DGPS Control
Binary(Hex)
Name
Bytes
Scale Example
Units
Description
Message ID 1 8A ASCII 138
DGPS Selection 1 01 See Table 27
DGPS Time Out 1 1E Seconds Range 1 to 120
Payload Length:3 bytes
Table 29 DGPS Selection
Byte Value Description
0 Auto
1 Exclusive
2 Never
3 Mixed (not recommended)
Elevation Mask – Message I.D.139
Table 30 contains the input values for the
following example:
Set Navigation Mask to 15.5 degrees
(Tracking Mask is defaulted to 5 degrees).
Example:
A0A20005 – Start Sequence and Payload
Length
8B0032009B – Payload
0269B0B3 – Message Checksum and End
Sequence
Table 30 Elevation Mask
Binary(Hex)
Name
Bytes
Scale Example
Units
Description
Message ID 1 8B ASCII 139
Tracking Mask 2 *10 0032 degrees Not currently used
Navigation Mask 2 *10 009B degrees Range –20.0 to 90.0
Payload Length:5 bytes
Power Mask – Message I.D.140
Table 31 contains the input values for the
following example: Navigation mask to
33dBHz (tracking default value of 28)
Example:
A0A20003 – Start Sequence and Payload
Length
8C1C21 – Payload
00C9B0B3 – Message Checksum and
End Sequence
Table 31 Power Mask
Binary(Hex)
Name
Bytes
Scale Example
Units
Description
Message ID 1 8C ASCII 140
Tracking Mask 1 1C dBHz Not currently implemented
Navigation Mask 1 21 dBHz Range –28 to 50
Payload Length:3 bytes