Calibrating the SW1

Ensure that the SW1 is level prior to calibrating.

Calibration Rod Configurations

The original calibration rod is a PVC pipe with removable calibration weight. The end of the pipe nearest the label goes against the back wall of the cradle. If the calibration weight has an “UP” indicator, orient it appropriately.
Config #1: The weight is installed on the end of the rod for the first and third groups.
Type 1, Configuration 1
Config #2: The weight is removed for the middle group.
Type 1, Configuration 2

The current calibration rod is extendable with a permanent weight. To extend or retract the rod, twist the octagonal weight counterclockwise to unlock it and clockwise to lock it. For greatest accuracy, when locking the rod in the extended position, either let it hang vertically or, if locking it while installed in the SW1, support the weight to keep the rod straight.
Config #1: The rod is fully-retracted for the first and third groups.
Type 2, Configuration 1
Config #2: The rod is fully-extended for the middle group. Ensure that all four internal sections are extended to reach the full length of 29" (74 cm).
Type 2, Configuration 2

Calibrating

  1. If not already mounted, mount the calibration rod in the cradle in Config #1.
    Rod Against Rear\
  2. Navigate to the Measure page.
    Navigate To Measure
  3. Place the phone in the cradle. Ensure that it is upright, fully seated, and secure.
    Install Phone
  4. Press and hold the cradle against the spring stop that has an indicating arrow.
    Load Cradle Load Cradle Close
  5. Tap the Measure button.
    Measure Button
  6. Release the cradle to record a measurement. Note: Measurements will be inaccurate until calibration is complete.
  7. When Stop appears in the button, stop the cradle.
    Recording Button
    Stop Button
    Wait Button
  8. Change the calibration rod to Config #2 and ensure it is still tight against the back of the cradle.
  9. Tap the + button to add a second measurement group.
    Plus Button
  10. Repeat steps 4-7 two times to record two measurements.
  11. Change the calibration rod back to Config #1 and ensure it is still tight against the back of the cradle.
  12. Tap the + button to add a third measurement group.
  13. Repeat steps 4-7 to record a measurement.
  14. Navigate to the Calibrate page.
    Navigate to Calibrate
  15. Verify that the five calibration checks are satisfied. If not, re-measure to correct.
    Calibration Checks
  16. Tap the Calibrate button. The calibration result below the button will update, and calibration is complete.
    Calibrate Button

Calibration is Complete

You’re now ready to measure.

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