Topcon Rotating Laser RL-SV2S

Press the keys to move the laser beam between X1 and X2 according to step 9 of the horizontal rotation check.

Press the ENT key to complete the adjustment for the X axis.

Ensure the RL-SV2S is not touched while it calculates the correction value until [End] is displayed.

Was the adjustment range exceeded?

If adjustment range was exceeded, describe the error displayed (refer to p. 62).

Power on the LS-80L and switch to high precision mode

Install the LS-80L on a beam 10 meters or higher above the floor

Hang the weight from the LS-80L indicator to the floor (Point A)

Mark the standard line on the floor perpendicular to the beam direction at Point A

Set up the RL-SV2S for vertical rotation at the designated position and power it on

Align the standard line on the floor with the laser beam and move the RL-SV2S in the arrow's direction

Ensure the laser beam is at the LS-80L indicator position (check with the buzzer sound from the LS-80L)

Measure the difference X between the standard line and laser beam

Is the difference X within 1 mm?

Set up tripod approximately 50 meters away from a wall, and set the instrument on level with the X1 facing the wall.

While pressing the grade key, turn ON the power. [CaLIb] will flash on the X axis screen.

Press the ENT key to enter X-axis check and adjusting mode. Auto leveling on the RL-SV2S is complete and the laser will emit.

Laser Beam Detection and Marking

Turn the LS-80L to the high precision mode.

Detect the center of the laser beam on the wall with the LS-80L and mark it as X1.

Loosen the centering screw, rotate the RL-SV2S 180°, and tighten the screw to secure. Ensure the instrument height is not misaligned.

Set up the laser centered between two walls approximately 50 m (164 ft) apart. Orient the instrument so one axis, either X or Y, is facing the walls. Grade should be set to 0.00% in both axes.

Locate and mark the position of the RL-SV2S beam on both walls using the LS-80L.

Turn off the RL-SV2S and move the RL-SV2S closer to wall A (1 m to 2 m /3 ft to 6 ft). Do not change the axis orientation of the RL-SV2S. Turn the RL-SV2S on.

Again locate and mark the position of the RL-SV2S beam on both walls using the LS-80L.

Measure the distance between the first and second marks on each wall.

Is the difference between each set of marks less than ±5 mm (±7/32 of an inch)?

Contact your dealer or Topcon if the difference between wall A-side and wall B-side exceeds ±5 mm (±7/32 of an inch).

Ensure Horizontal Calibration is completed

Ensure Horizontal Rotation Cone Error is completed

Setup the X-side facing the staff

Securely position Nail 1 and Nail 2 exactly 30m apart

Record the staff height of Nail 1 at grade setting of 0% with LS-80L

Record the staff height of Nail 2 at grade setting of 0% with LS-80L