Trimble Outdoors SPSX51 - Manual (Page 159)

SPSx51 Modular GPS Receivers User Guide 157
Transmitting Corrections D
Scenario 2: Outputting corrections using a TRIMMARK 3 radio
A Construction base station such as the SPS851 has an internal 900 MHz radio and you
want to transmit corrections on a Trimble TRIMMARK 3 radio connected to the
SPS851 receiver.
Solution
The TRIMMARK 3 radio comes with both a 7-pin Lemo to 7-pin Lemo cable and a
7-pin Lemo to 9-pin D-sub cable.
To connect the TRIMMARK 3 radio to the SPS851 receiver, do one of the following:
• Use the 7-pin Lemo (SPS851) to 7-pin Lemo (TRIMMARK 3) cable.
• Use the Lemo-to-Lemo cable.
• Use the 7-pin Lemo to 9-pin D-sub cable and then connect to the Modem port
(9-pin D-sub connector) on the SPS851 adaptor.
To configure the system, do one of the following:
• Use the SCS900 Site Controller software to connect to the receiver (either by
cable or Bluetooth wireless technology). Start the base station and then
configure RTK messages to be transmitted through an external radio. The
SCS900 software will locate the TRIMMARK 3 radio and then allow you to set
the radio channel. Then, use the front panel of the receiver to select Radio and
Lemo (R+L) or (R+M) to turn on the internal 900 MHz radio transmissions.
• Use the web interface to access the SPS851 setup. Select I/O Configuration / Port
Configuration. Select the Serial 1 / Lemo option and select corrections to be sent
on the Lemo port at those baud rate settings. If using 9-pin D-sub, then use the
Modem port. While in the Port Configuration menu, also set the internal radio to
transmit corrections.
• Use the front panel of the receiver to set up the Lemo port and to select the radio
on which to output the data (shown as R+L or R+M on the receiver display).