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RoyalTek GPS Receiver REB-2000/REB-12R REV-2000 Operational Manual
22
Table 24 DOP Mask Control
Binary(Hex)
Name
Bytes
Scale Example
Units
Description
Message ID 1 88 ASCII 137
DOP Selection 1 00 See Table 25
GDOP Value 1 08 Range 1 to 50
PDOP Value 1 08 Range 1 to 50
HDOP Value 1 08 Range 1 to 50
Payload Length: 5 bytes
Table 25 DOP Selection
Byte Value Description
0 Auto PDOP/HDOP
1 PDOP
2 HDOP
3 GDOP
4 Do Not Use
DGPS Control – Message I.D.138
Table 26 contains the input values for the
following example:
Set DGPS to exclusive with a time out of
30 seconds.
Example:
A0A20003 – Start Sequence and Payload
Length
8A011E – Payload
00A9B0B3 – Message Checksum and
End Sequence
Table 26 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 27 DGPS Selection
Byte Value Description
0 Auto
1 Exclusive
2 Never
3 Mixed (not recommended)
Elevation Mask – Message I.D.139
Table 28 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