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Commands
GRD: Datum-to-Grid (Map Projection)— Extended Memory G12 Only
$PASHS,GRD,s1
This command allows you to enable or disable the usage of the user defined datum
to grid transformation to position outputs, where s1 is either NON (transformation
disabled) or UDG (enable user defined datum to grid transformation). The GRD
command is used in conjunction with the $PASHS,UDG command, which is used
to select the desired datum to grid transformation parameters.
Example
Enter the following command to enable the user defined to grid transformation:
$PASHS,GRD,UDG
$PASHQ,GRD,[c1]
This command allows you to query for current GRD status, where c1 is the optional
port designator for the output of the response. If a port is not specified, the receiver
sends the response to the current port.
$PASHR,GRD
The response message is output in the format:
$PASHR,GRD,s1*hh
The s1 parameter is the 3-character string indicating the current datum-to-grid
setting (NON or UDG).
HDP: HDOP Mask Value
$PASHS,HDP,d1
This command allows you to set the value of the HDOP mask, where d1 is a number
between 0 and 99.9. If the HDOP value computed by the G12 is higher than the
HDOP mask value, the receiver will automatically go into fixed altitude mode. You
can view the current HDOP mask value by entering the query command
$PASHQ,PAR and checking the HDP field.
Example
Enter the following command to set an HDOP mask value of 6:
$PASHS,HDP,6
G12RevD.book Page 71 Tuesday, April 2, 2002 4:33 PM
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