18-3
18 CHECKS AND ADJUSTMENTS
18.3 Adjustment of Compensation Systematic Error of Instrument
1 Vertical axis error
2 Collimation axis error
3 Vertical angle 0 datum error
Correction constants for the above errors are calculated and stored in the instrument by the following
procedure, and then measurement values are corrected using the stored constants. This adjustment
has a direct effect on determining the coordinate origin. Carry out the adjustment very carefully.
Operating procedure
Operation
Display
1
Carefully level the instrument checking the screen.
Turn OFF the power.
2
Power ON the instrument.
Power ON
3
After pressing the
{MENU}
key, press the
{F4}
(P
↓
) key three times to get the menu on page 4
{MENU}
{F4}
{F4}
{F4}
4
Press the
{F1}
key.
{F1}
5
Press the
{F2}
key.
{F2}
6
Press the
{F1}
key.
{F1}
7
Collimate target A. (FACE (1)).
Collimate
A
(Normal)
8
Press the
{F4}
(SET) key. *1)
The sample display shows that the measurement
is made 5 times in FACE 1.
{F4}
9
Turn the telescope in reverse telescope setting
(FACE (2)).
10
Collimate target A.
Turn
telescope
Collimate
A
(Reverse)
MENU 4/4
F1:ADJUSTMENT MODE
F2:CONTRAST ADJ.
F3:STATUS SCREEN P
↓
ADJUSTMENT MODE
F1:V ANGLE 0 POINT
F2:V0 AXIS
P
↓
V0 AXIS
F1:MEASUREMENT
F2:CONSTANT LIST
V0/AXIS ADJUSTMENTS
(A)COLLIMATION
FRONT FACE1 /0
V: 89°55'50"
LEVEL ±0
SET
REVERSE FACE2 /5
V: 270°04'20"
LEVEL ±0
SET
