9
6.Test and Calibration
6.1 Circular Bubble
After setting up the tripod and mount the instrument, rotate the footscrews to center
the circular bubble. Turn the instrument 180 degrees round and if the bubble moves
away from the mid-position, calibration will be needed. Eliminate half the residual
deviation by means of footscrews and half by adjusting the circular bubble with the
adjustment screws using the hexagon spanner. Tighten a screw and the bubble will
move towards the screw; loosen a screw and the bubble will move away from the
screw. First adjust the closest screw to the connecting line between the center of the
bubble and the mid-position until the bubble is centered. If the bubble cannot be
centered with the single screw, adjust another screw. Repeat the procedure until the
bubble is centered. The bubble is adjusted correctly if it is always on the center
wherever the telescope sights. At this point the compensator is within its working
range.
6.2 Interest Point Detection
To avoid the influence of transport, storage and temperature on the
measurement result, interest point detection is needed.
Set up two staffs (1, 2) roughly 45 m apart. Divide this distance into three and define
two instruments stations (A, B) about 15 m away from the staffs on the connecting line
between them. Measure both staffs from each of these stations.
Press MENU
key for three
times
Parameters
AUTO PWR:
ON
Press FUNC
key twice
Parameters
INV Staff: off
Press
△
H
key to switch
Parameters
INV Staff: On
Press MENU
Key twice
Rh
↓ 0.0000m
Hd
：
0.000m
（
In this mode there is a ↓
symbol following Staff
）
StationB
15m
15m
15m
Staff2
Staff1
StationA
