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SMART6 User Manual Rev 3
66
B.6 $PMDT Configure Tilt Compensation
Use this NMEA command to configure the Tilt Compensation function.
Syntax
$PMDT,[command],[parameters]*cksum
Refer to
on page 32 for setup instructions.
Host
Description
Command Format
Tilt Sensor Response
u
a
b
Set GPS
Sensor Height
To set the GNSS sensor height in feet and
inches:
$PMDT,u,,ff,ii*cksum <cr><lf>
Example: To set the GNSS sensor height to
12 ft 6 in, the command is:
$PMDT,u,,12,6*4D
Note
: Feet and inches are entered as
integers. You can enter feet and inches, but
not feet, inches and metres.
Response to the “u” command:
$PMDT,<,GNSS sensor height
(inches):nnnnn <cr><lf>
where nnnnn is a five digit integer, sensor
height in inches.
In this example, the Tilt Sensor response is:
$PMDT,<,GNSS sensor height (inches):
00150
To set the GNSS sensor height in metres:
$PMDT,u,,,,mmm.mmm*cksum <cr><lf>
Example: To set the GNSS sensor height to
3.5 metres, the command is:
$PMDT,u,,,,3.5*7C
Response to the ”u” command:
$PMDT,<,GNSS sensor height
(inches):nnnnn <cr><lf>
where nnnnn is a five digit integer, sensor
height in inches.
In this example, the Tilt Sensor response is:
$PMDT,<,GNSS sensor height (inches):
00137
l
Set Field Level $PMDT,l*cksum <cr><lf>
Example:
$PMDT,l*4D
Response to the
“
l” command:
$PMDT,<,Level state set <cr><lf>
Example:
$PMDT,<,Level state set
x
Update Flash
Values
To update flash values (needs to follow any
height or level command that is not done
each time you power up):
$PMDT,x*cksum <cr><lf>
Example: $PMDT,x*59
Note
: The command
$PMDT,x*59
must
be used to save the $PMDT settings to
memory. The SAVECONFIG does not save
$PMDT settings.
Response to the “x” command:
$PMDT,<,Flash updated <cr><lf>
Example:
$PMDT,<,Flash updated
a. If all fields in the u command are zero or null, the current height is transmitted without change (with the format shown
above). Use the following command to return the current settings:
$PMDT,u*54
.
b. If an invalid entry is received (>500 inches), the response is:
$PMDT,<Max legal height exceeded: nnnnn and will be ignored
For example, if you enter 42 ft 6 in, you will get the following response:
$PMDT,<,Max legal height exceeded: 00510 and will be ignored
$PMDT,<,GPS sensor height (inches): 00150