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Commands Chapter 5
EuroPak-15a Receiver User Manual Rev 5 53
5.3.6 ECUTOFF Set Satellite Elevation Cut-off
This command sets the elevation cut-off angle for tracked satellites. The receiver will not track a satellite until
it rises above the cut-off angle. Tracked satellites that fall below the cut-off angle will no longer be tracked
unless they were manually assigned using the ASSIGN command.
In either case, satellites below the ECUTOFF angle will be eliminated from the internal position and clock
offset solution computations.
If the receiver has not yet received an almanac, satellites below the cut-off angle may be tracked.
This command permits a negative cut-off angle, which could be used in these situations:
• the antenna is at a high altitude, and thus can look below the local horizon
• satellites are visible below the horizon due to atmospheric refraction
1. This command only affects GPS satellites. GEO and Galileo satellites maintain their lock.
2. Care must be taken when using ECUTOFF because the signals from lower elevation satellites are
travelling through more atmosphere and are therefore degraded.
Syntax: Message ID: 50
Example:
ECUTOFF 10.0
ECUTOFF ANGLE
Field
Field
Name
Valid Values Description Format
Binary
Bytes
Binary
Offset
1 header
This field contains the Abbreviated ASCII command name. See
Section 4.1 on Page 31.
H 0
2 angle
-90.0 to +90.0
Elevation cut-off angle
relative to horizon in
degrees.
Float 4 H