Operation
Chapter 3
SMART6-L User Manual Rev 3
20
Commands are typed at the interfacing computing device’s keypad and executed after issuing a carriage
return command which is usually the same as pressing the <Enter> key.
An example of a response to an input command is the
FIX POSITION
command. It can be as:
[COM2] FIX POSITION 51.11635 -114.0383 1048.2 [Carriage Return]
<OK
where
[COM2]
is the port prompt, followed by the command entered and [Carriage Return] is a prompt to
press the <Enter> key.
The example above illustrates the command input to the base receiver’s COM2 port, which sets the
position of the base station receiver for differential operation. Confirmation that the command was
actually accepted is the appearance of
<OK
.
If a command is entered incorrectly, the receiver responds with:
<Invalid Message ID
(or
a
more
detailed
message)
3.3
Transmitting and Receiving Corrections
RTK or DGPS corrections can be transmitted from a base station to a rover station to improve position
accuracy. The base station is the GNSS receiver, which is acting as the stationary reference. It has a
known position and transmits correction messages to the rover station. The rover station is the GNSS
receiver which does not know its exact position and can be sent correction messages from a base station
to calculate differential GNSS positions. The SMART6-L can be used as a base receiver to transmit RTK
or DGPS corrections or a rover to receive the same corrections. An example of a differential setup is
given in
Figure 7, Open Connection Window
on page 19
.
Ensure computers Control Panel’s Power Settings are not set to Hibernate or Standby
modes. Data is lost if one of these modes occurs during a logging session.
