Replacing the Infrastructure

After you have configured your D4 RTLS, you may need to perform a number of ongoing maintenance tasks, including:

  • Replacing sensors and TDUs.

  • Moving sensors and TDUs.

  • Replacing timing cables.

The Solver keeps track of all the solver runs and how these were used for calculating sensor properties. If you make any changes to the physical infrastructure after you have saved any solver runs, you must:

  1. Invalidate the old solver results.
  2. Rerun the Solver.

Periodically, you may also need to update the software and firmware versions of sensors and TDUs.

Moving a Sensor or TDU

When you move a sensor, the existing orientation results continue to be used, even though they may not be correct for the sensor in its new location. You must therefore assert that you have moved the device before rerunning the Solver.

To assert that you have moved the device, in the LSC:

  1. On the Replace infrastructure tab, double-click <Assert that a sensor has moved>.

  2. Type the MAC address of the sensor that you have moved and click Save.

You can now rerun the Solver for the sensor as described in Solving Sensor Parameters.

Replacing and Removing a Device

When you replace a sensor, the existing orientation results continue to be used, even though they may not be correct for the new sensor.

To change the MAC address of a sensor or TDU that you have replaced or removed, in the LSC:

  1. On the Replace infrastructure tab, double-click <Swap devices>.

  2. Type the MAC addresses of the old and new devices.

  3. Save your changes.

    You can now rerun the Solver.

LSC keeps a record of all devices that have been swapped. You do not have to delete any of these records.

Reusing Sensors

The following steps take you through how to reuse previously-used sensors in your D4 system. There are two parts to the process:

  • Archiving the sensor to remove it from its current group and take it out of use
  • Adding the sensor to its new group and reconfiguring it

Archiving a sensor

  1. Create a sensor group for archived sensors.

    In the Place devices tab, create a sensor group for all physically removed sensors, for example called "Storage".

    See Adding and Placing Devices for additional information on working with sensors and groups.

  2. Move the sensor to the archived sensors group.

    In the Place devices tab, locate the sensor to be archived, select it and drag it from its current group to the archived group.

    You can add a comment to the sensor if required in the View sensor status tab.

  3. Unset the position of the sensor so it is no longer visible.

    In the Place devices tab, double-click the MAC address or name of the sensor, select the Unset sensor position checkbox, and click Save.

    The sensor is now listed in the archive group and as Unpositioned.

  4. Assert that the sensor has moved.

    In the Replace infrastructure tab, double-click <Assert that a sensor has moved>, type the MAC address of the sensor and click Save.

Reusing a sensor

  1. If you added a comment to the archived sensor, clear the comment.

    in the View sensor status tab, double-click the sensor, delete the text, and click Save.

  2. Rename the sensor, if required.

    In the Place devices tab, double-click the MAC address or name of the sensor, type the new name and click Save.

  3. Move the sensor to a new group and set the new position.

    In the Place devices tab, locate the sensor in the archived group, select it and drag it to its new group. Then double-click the MAC address or name of the sensor to open the editor where you can enter its location.

  4. Configure a custom network configuration for the sensor, if required.

    At this point, the sensor should be working with DHCP, but you can assign custom settings if necessary. To do this, in the Sensor network configuration tab, double-click the MAC address or name of the sensor, enter the required settings, and click Save.

    See Assigning Network Settings to Devices for information on valid combinations of settings.

  5. Reboot the sensor and confirm it is running.

    On the View sensor status tab, select the sensor and click Reboot. If the device's status is Running, it has booted successfully.

  6. Initiate the solving procedure for the sensor on the Solve sensor parameters tab.

    See Solving Sensor Parameters for further information.

Replacing a Timing Cable

When you replace a timing cable, the existing timing results for all the sensors that use the cable in their timing route continue to be used, even though these results may not be valid. You must therefore assert that you have changed the cable before rerunning the Solver.

To record that a cable has been changed, in the LSC:

  1. On the Replace infrastructure tab, double-click <Swap cable>.

  2. Type the MAC addresses of the sensors that are connected by the cable.

You can now rerun the Solver.