Scenario 1: Outputting corrections using a TDL450/HPB450 radio-modem

A construction base station such as the SPS Modular has an internal 900 MHz radio and you want to also transmit corrections on a Trimble TDL450/HPB450 radio-modem connected to the SPS Modular receiver.

Solution

The TDL450/HPB450 radio comes with a 5-pin Lemo to 7-pin Lemo connector with a power connection lead:

  1. Connect the 7-pin Lemo connector to the connector on the receiver.

  2. Connect the 5-pin Lemo connector to the TDL450/HPB450 radio.

  3. Connect the DC power lead to an external power source.

  4. Turn on the TDL450/HPB450 radio.

If the TDL450/HPB450 radio has the 5-pin Lemo connector to 9-pin D-sub connector cable:

  1. Connect the 9-pin D connector to the 26-pin to 9-pin D-sub adapter on the receiver.

  2. Connect the 5-pin Lemo connector to the HPB450 radio.

  3. Connect the DC power lead to an external power source.

  4. Turn on the TDL450/HPB450 radio.

To configure the system, do one of the following:

  • Use the Siteworks or SCS900 Site Controller software to connect to the receiver. Set up the base station with the external radio. The software will locate the TDL450/HPB450 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) to then turn on the internal 900 MHz radio transmissions. If using the 9-pin D-sub connector, select Radio and Modem Port (R+M).

  • Use the web interface to configure the settings. 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 (the TDL450/HPB450 serial interface is shipped with the default rates 38400 8/N/1).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).

Configuration software accompanies the TDL450/HPB450 radio if you need to change the serial connection baud rate.