Novatel GNSS Receiver and Antenna SMART-AG - Manual (Page 76)

76 SMART-AG User Manual Rev 5
B.5 $PMDT Configure Tilt Compensation
Use this NMEA command to configure the Tilt Compensation function.
Syntax
$PMDT,[command],[parameters]*cksum
Refer to “Tilt Compensation” on Page 28 and “Tilt Compensation” on Page 40 for setup instructions.
Host Description Command Format Tilt Sensor Response
u
a b Set GPS
Sensor
Height
To set the GPS sensor height in feet and
inches:
$PMDT,u,,ff,ii*cksum crlf
Example: To set the GPS sensor height
to 12 ft 6 in, the command is:
$PMDT,u,,12,6*40
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,<,GPS sensor height
(inches):nnnnn crlf
where nnnnn is a five digit integer, sensor
height in inches.
In this example, the Tilt Sensor response
is:
$PMDT,<,GPS sensor height
(inches): 00150
To set the GPS sensor height in metres:
$PMDT,u,,,,mmm.mmm*cksum crlf
Example: To set the GPS sensor height
to 3.5 metres, the command is:
$PMDT,u,,,,3.5*7C
Response to the ”u” command:
$PMDT,<,GPS sensor height
(inches):nnnnn crlf
where nnnnn is a five digit integer, sensor
height in inches.
In this example, the Tilt Sensor response
is:
$PMDT,<,GPS sensor height
(inches): 00137
l Set Field
Level
$PMDT,l*cksum crlf
Example:
$PMDT,l*4D
Response to the “l” command:
$PMDT,<,Level state set crlf
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 crlf
Example: $PMDT,x*59
Response to the “x” command:
$PMDT,<,Flash updated crlf
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).
b. If an invalid entry is received (>500 inches), the response is:
$PMDT,<Max legal height exceeded: nnnnn and will be ignored clrf
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