Appendix 1: Manually Indexing The Vertical Circle - Sokkia SET2CII Operator's Manual

APPENDIX 1: MANUALLY INDEXING THE
VERTICAL CIRCLE
9
Like all theodolites, the SET2Cwill have a small vertical indexerror.
For angle measurement of the highest accuracy, the vertical index
error can be removed as follows:
1) In parameter setting mode, select
the "V indexing" parameter and
set to "2. Manual".
ZA
Face 1
HAR 314' 50' 30"
2) In Basic mode, press
@
after
step I), or switch off and on again.
"ZA Face 1" is displayed.
0 SET
,
.
Index V crrcle In
face left
'
/
ZA Face 2
/
HAR
2 4 ' 0 1 ' 3 0
face right
3) In face left (Face I), accurately
sight a clear target at a horizontal
distance of about 30 m.
Press ,
.
"ZA Face 2" is displayed.
4)
Loosen the horizontal clamp @
and rotate the upper part of the
SET2C through 180". In face right
(Face 21, accurately sight the
same target.
Press
,
&
The vertical circle has been in-
dexed.
Note: If the power switch is turned
off,thevertical circle should be
indexed again.