Message 1212 (Satellite Elevation Mask Control); Message 1213 (Satellite Candidate Select) - Navman 12 Designer's Manual

3.5.2.4 Message 1212 (satellite elevation mask
control).
This message allows the user to set the elevation
mask angle used by the receiver to select visible
satellites. Storage of the Elevation Mask Angle
parameter requires EEPROM. The contents of
the 'satellite elevation mask control' message are
described in Table 3-26.
Message ID: 1212
Rate: as required (maximum rate 1 Hz)
Message length: 8 words
Word No.
1-4
5
6 Sequence number (Note 1)
7 Elevation mask angle
8
Note 1: The sequence number is a count that indicates whether the data in a particular binary message has been updated or
changed since the last message input.
Table 3-26 Message 1212 (satellite elevation mask control)
Message ID: 1213
Rate: as required (maximum rate 1 Hz)
Message length: 10 words
Word No.
1-4
5
6 Sequence number (Note 1)
7.0
•
•
•
7.15
8.0
•
•
•
8.15
9.0 Non-volatile storage select
9.1-9.15
10
Note 1: The sequence number is a count that indicates whether the data in a particular binary message has been updated or
changed since the last message input.
MN002000A © 2004 Navman NZ Ltd. All rights reserved. Proprietary information and specifications subject to change without notice.
Name
Message header
Header checksum
Data checksum
Name
Message header
Header checksum
Satellite PRN #1
Satellite PRN #16
Satellite PRN #17
Satellite PRN #32
Reserved
Data checksum
Table 3-27 Message 1213 (satellite candidate select)

3.5.2.5 Message 1213 (satellite candidate select).

This message allows the user to construct the list
of satellites which will be considered for selection
by the receiver. The contents of the 'satellite
candidate select' message are described in
Table 3-27.
Type Units
I
UI rad
Type Units
I
Bit
Bit
Bit
Bit
Bit
Range Resolution
0 to 32 767
0 to ±�/2 10
-3
Range
0 to 32767
1 = included
1 = included
1 = included
1 = included
1 = store in non-volatile
memory
35