Tilt sensors

When using a GNSS receiver with a built-in tilt sensor, you can:

• View the electronic bubble (eBubble) to help you keep the receiver's integrated antenna level when measuring a point.
• Measure the tilt distance of the pole and store it with the job.
• Configure the survey style to prompt a warning when the pole is outside the specified Tilt tolerance.
• Configure the software to automatically measure a point when the pole is within the configured tilt tolerance for more than half a second.
• Measure points with an unlevelled pole using the compensated points method.

Tilt tolerance is defined as the distance on the ground that the tilt represents given the antenna height. If the pole is held so that the distance on the ground (tilt distance) is less than the tilt tolerance, the point can be measured.

Tilt information is stored with every measured point provided the tilt sensor had a valid calibration at the time the point was stored. No tilt information will be stored if the tilt sensor calibration is not valid.

The built-in tilt sensor is usually used to ensure the pole is level. Conversely, a compensated point uses the built-in tilt sensor to measure points when the pole is not level and calculate an offset. Measuring a compensated point is useful when:

• You want to speed up your workflow without spending time making sure the pole is level.
• An obstruction means that you are unable to position the antenna directly above the point. Traditionally you would need to use an offsetting technique to measure such points. Using the compensated point measurement method corrects the antenna's offset location to produce a ground position at the tip of the pole.