18-2
18 CHECKS AND ADJUSTMENTS
18.2 Adjustment of Vertical Angle 0 Datum
If when measuring the vertical angle of target A at telescope position normal (direct) and reverse
settings, the amount of normal and reverse measurements combined is other than 360° (ZENITH-0),
half of the difference from 360° is the error amount from corrected 0 setting. Carry out adjustment. As
adjustment for vertical angle 0 setting is the criteria for determining instrument coordinate origin, use
special care for adjustment.
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
{F1}
key.
{F1}
6
Collimate target A from the telescope properly in
normal setting.
Collimate A
(Normal)
7
Press the
{F4}
(ENTER) key.
8
Collimate target A in reverse telescope setting.
{F4}
Collimate A
(Reverse)
9
Press the
{F4}
(ENTER) key.
Measured value is set and carry out normal angle
measurement.
{F4}
10
Check that the total amount of normal and reverse
angular travel is 360° collimating the target A by
normal and reverse positions.
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 ADJUSTMENT
<STEP-1> FRONT
V: 90°00'00"
ENTER
V0 ADJUSTMENT
<STEP-2> REVERSE
V: 270°00'00"
ENTER
<SET!>
V : 270°00'00"
HR: 120°30'40"
0SET HOLD HSET P1
↓
