Topcon GPT-7500 Series, Instruction Manual

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69
3 STANDARD MEASUREMENT MODE
3.3.3 Execution of Coordinate Measuring
Measure the coordinates by entering the instrument height and reflector height, coordinates of
unknown point will be measured directly.
•
When setting coordinate values of occupied point, see section 3.3.1“Setting Coordinate Values of
Occupied Point” .
•
When setting the instrument height and reflector height, see section 3.3.2“Setting of the Instrument
Height / Reflector(Prism) Height” .
•
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.HT
Reflector height : R.HT
Vertical distance(Relative elevation) : z
Coordinates of the center of the reflector,
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.HT+z - R.HT
Confirm the angle measurement mode.
1
Set coordinates values of occupied point
and instrument/reflector height. *1)
2
Set the direction angle of known point A. *2)
3
Collimate the reflector.
4
Press the [ ] key.
Measuring starts.
*1) In case the coordinate of occupied point is not entered, (0,0,0) will be used as the default for the
occupied point.
The instrument height will be calculated as 0 when the instrument height is not entered.
The reflector height will be calculated as 0 when the reflector height is not set.
*2) Refer to section 3.1.3“Measuring from the Required Horizontal Angle” .
Origin (o, o, o)
Occupied point (No, Eo, Zo)
Center point of the instrument
(No, Eo, Zo+INST.HT)
Coordinates of the center of the reflector, originated from the center point of the instrument (n,e,z)
Unknown point
(N
1
, E
1
, Z
1
)