182
15.4 PERPENDICULARITY BETWEEN LINE OF SIGHT AND HORIZONTAL
AXIS (2C)
Check
1.
Set
object
A
at
about
100
meters
away
the
same
height
as
the
instrument,
and
make
the
vertical
angle
with
±3°.
Then
level
and
center
the
instrument
and
turn
on
the
power
2.
Sight
object
A
in
FaceI
and
read
the
horizontal
angle
value.
(e.g.:
Horizontal
angle
L=10°13
′
10
″
).
3.
Loosen
the
vertical
and
horizontal
clamp
screws
and
rotate
the
telescope.
Sight
object
A
in
Reverse
faceand
read
the
horizontal
angle
value.
(e.g.:
Horizontal
angle
R=
190°13
′
40
″
).
4.
2C
=L
‐
R±180°=
‐
30
″
≥
±
20″
,
adjustment
is
necessary.
Adjust
A.
Electronic
Adjustment
Operation
Steps
:
OPERATIONAL STEPS
KEY
DISPLAY
①
After leveling the instrument, in
the main menu click [System
Setup].
Summary of Contents for NTS-960R
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Page 11: ...4 1 NOMENCLATURE AND FUNCTIONS 1 1 NOMENCLATURE...
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