GPT-3000 SERIES - FLT Geosystems

2.5 Vertical and Horizontal Angle Tilt Correction(GPT-3007 has vertical angle tilt correction only.)2 PREPARATION FOR MEASUREMENTWhen the tilt sensors are activated, automatic correction of vertical and horizontal angle formislevelment is displayed.To ensure a precise angle measurement, tilt sensors must be turned on. The display can also be usedto fine level the instrument. If the (TILT OVER) display appears the instrument is out of automaticcompensation range and must be leveled manually.ZenithZenithStanding axisInclination of the standingaxis in the X directionStanding axisInclination of the standingaxis in the Y directionHorizontalTrunnion axis●●GPT-3000 compensates both the vertical angle and the horizontal angle readings due to inclinationof the standing axis in the X and Y directions .For more information about dual axis compensation, refer to APPENDIX 1 “Dual AxisCompensation”.When the instrument is out of compensation. (TILT OVER)V : ° ' "HR: ° ' "Standing Axis in the X directionout of rangeV : ° ' "HR: ° ' "Standing Axis in the Y directionout of rangeV : ° ' "HR: ° ' "Standing Axis in the X and Ydirections out of range●●The display of Vertical or Horizontal angle is unstable when instrument is on an unstable stage or awindy day. You can turn off the auto tilt correction function of V/H angle in this case.To set auto tilt correction from the moment that power is on, see Section 6.4.3“Vertical andHorizontal Angle Tilt correction ( Tilt ON/OFF)” .2-5