Using a Trimble HPS2 handle

1. Press the power button on the HPS2 handle under the DA2 receiver until the receiver's blue LED starts blinking.

2. In TerraFlex tap and tap Settings. Tap Location Service.

3. Your device scans for nearby devices. Receivers are listed by model name and serial number.

   If the receiver you want to connect to is not listed, tap Scan for more devices. If there are a number of Bluetooth devices in the vicinity you may need to refresh the list a couple of times. You may need to scroll down to see all receivers.

   If you are not sure which receiver is yours, check the serial number label on the underside of the receiver.

4. Select the DA2 receiver on the HPS2 handle; check that the serial number matches the serial number on the label on the underside of the receiver.

5. Once connected, the Location Service tile shows the name of the HPS2 handle's connected DA2 receiver; the receiver's blue LED stops blinking and stays on.

6. Tap Antenna Settings:

   1. Tap Antenna Height and enter the height of the DA2.

   2. Tap Measurement Method and select the method — Bottom of HPS2 handle, or Bottom of HPS2 w/ pole mount.

   3. Tap .

7. Tap the Laser Rangefinder tile. From the list of devices, tap Trimble HPS2.

   If your HPS2 handle's rangefinder is not listed, tap Scan for more devices. If there are a number of Bluetooth devices in the vicinity you may need to refresh the list a couple of times. You may need to scroll down to see all devices.

8. Tap the HPS2 rangefinder to connect to it; the serial number for the rangefinder is the same as for the DA2 receiver.

   When the rangefinder is connected, TerraFlex returns to the Settings screen. The connected HPS2 rangefinder shows in the the Laser Rangefinder tile.

The purpose of the calibration is to align your device's camera with the EDM in the HPS2 handle, so when you use the camera view in the offset workflow, the device's camera and the HPS2 EDM laser are pointing at the same target.

Calibration settings are stored for a specific phone + HPS2 combination. TerraFlex can store calibration settings for multiple phone + HPS2 pairings so you should only need to calibrate once. If you change how your phone is mounted on the HPS2 handle, for example by removing and re-attaching the magnetic mount plate, then you will need to recalibrate.

1. When you first connect to the HSPS2 handle, you are warned that the device is not calibrated. Tap YES to calibrate it.

   You can calibrate / recalibrate the device at any time; tap the Device Calibration tile.

2. If you have not enabled the camera permission for TerraFlex, you are prompted to allo it. See above.

3. The Device calibration instructions appear, as follows:

   Device calibration requires aligning the center of the crosshairs on the screen with the red dot from the EDM.

   This is required to be done at two different distances, the first at close range (45 cm-60 cm) and the second further away ( more than 3 meters).

   The alignment process is done automatically and must be done indoors.

   

4. Tap X (top right) to close the instructions.

5. Hold the device steady facing a plain wall at the required distance until the crosshair aligns itself with the red dot.

   The automatic alignment works by detecting the red dot in the camera image. Ensure there are not other sources of red colour in view when completing the alignment.

   Refer to the image above to ensure the crosshair is accurately aligned with the red dot. This is most important on the first alignment.

6. Tap Confirm first point.

7. You are then prompted to move further away; move more than 3 meters away until the Move further away message is no longer showing on the screen. Continue to hold the device steady facing the wall until the crosshair aligns itself with the red dot. Refer to the image above to ensure the crosshair is accurately aligned with the red dot.

8. Tap Confirm second point.

9. Tap Finish calibration. The status on the Device Calibration tile changes to Calibrated.

10. Tap to exit the Settings screen.

Once calibration is complete, use the HPS2 handle to perform distance-distance offsets when capturing the location of point features.

1. In the map, tap (Log with offset).

2. Move to the location you want to use as a starting point, and use the rangefinder to measure the offset from your current position to the asset you want to capturing.

3. Tap Measure Offset; your first position is logged, along with the offset distance.

4. Move 90 degrees around the asset, following the prompts on the screen to ensure you stay within range. When you at the second location, tap Measure second offset.

5. Use the rangefinder to measure the second offset from your position to the asset you are capturing.

6. Tap Measure Offset; your second position is logged, along with the offset distance.

   The software uses the two reference positions you logged and the distance values from the rangefinder measurements to calculate two intersecting circles that show the two possible locations of the asset and shows them on the map:

   • the two blue map pins indicate the reference positions;

   • the two solid yellow discs indicate the two possible asset locations.

7. From the two highlighted asset locations on the map, tap the solid yellow disc that is the correct location of the asset. If you are not sure which location is correct, walk toward the asset.

8. If you are not able to get closer to the asset, or if the selected location is outside the accuracy threshold and you are not permitted to accept it, tap X, confirm that you want to cancel the current offset measurement, and then repeat steps 2 through 7 above.

9. To save the collected offset, tap .