Topcon GTS-823A - Manual (Page 55)

4-13
4 STANDARD MEASUREMENT MODE
4.3.3 Execution of Coordinate Measuring
Measure the coordinates by entering the instrument height and prism height, coordinates of unknown
point will be measured directly.
l When setting coordinate values of occupied point, see Section 4.3.1“Setting Coordinate Values of
Occupied Point” .
l When setting the instrument height and prism height, see Section 4.3.2“Setting of the Instrument
Height / Prism Height” .
l The coordinates of the unknown point are calculated as shown below and displayed:
Coordinates of occupied point : (N
0
, E
0
, Z
0
)
Instrument height : Inst.h
Prism height : R.h
Vertical distance (Relative elevation) : z
Coordinates of the center of the prism,
originated from the center point of the instrument
: (n,e,z)
Coordinates of unknown point : (N
1
, E
1
, Z
1
)
N
1
= N
0
+ n
E
1
= E
0
+ e
Z
1
= Z
0
+ Inst.h + z - P.h
Confirm the angle measurement mode.
Operating procedure Operation Display
1 Set coordinates values of occupied point and
instrument/prism height. *1)
2 Set the direction angle of known point A. *2) Set
direction
angle
3 Collimate target B.
Collimate
4 Press [F3](NEZ) key.*3)
Measuring starts.
[F3]
Origin (o, o, o)
Occupied point (No, Eo, Zo)
Center point of the instrument
(No, Eo, Zo + Inst.h)
Coordinates of the center of the prism, originated from the center point of the instrument (n,e,z)
Unknown point
(N 1 , E 1 , Z 1 )
V : 90
°10'20"
HR: 120
°30'40"
SD HD NEZ 0SET HOLD P1 ↓
N : <
E : PSM 0.0
Z : PPM 0.0
(m) *F.R
MEAS MODE VH SD HD P1 ↓