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7 DATA COLLECTION
7.3 Data Collect Offset Measurement mode
This mode is useful when it is difficult to set up the prism directly, for example at the center of a tree.
Data Collect . Offset Measurement has two measuring methods.
● Angle offset measurement
● Distance offset measurement
● Plane offset measurement
● Column offset measurement
7.3.1 Angle Offset Measurement
Place the prism at the same horizontal distance from the instrument as that of point A0 to measure.
When measuring coordinates of ground point A1 :Set the
instrument height / prism height.
When measuring coordinates of point A0 : Set the
instrument height only. (Set the prism height to 0 ).
Operating procedure Operation Display
1 Press the [F3](MEAS) key and press the [F4]key to
get to the next soft key page.
[F3]
[F4]
2 Press the [F1](OFSET) key.
[F1]
3 Press the [F1](ANG.OFFSET) key.
[F1]
4 Collimate the prism.
Collimate P
Prism P
Prism height
Instrument height
Occ.Point
When sighting to A
0
, you can select one of two
ways. One is to fix vertical angle to the prism
position even up down the telescope position, and
the other is to gear vertical angle to the up down
of telescope movement. In case following the
vertical angle to the movement of telescope, SD
(Slope Distance) and VD (Vertical Distance) will
be changed according to the movement of
telescope.
To set this option, refer to Chapter 16
“SELECTING MODE”.
PT#
→
PT-11
PCODE :TOPCON
R.HT : 1.200 m
INPUT SRCH MEAS ALL
PT#
→
PT-11
PCODE :TOPCON
R.HT : 1.200 m
VH *SD NEZ P1
↓
OFSET --- NP/P P2
↓
OFFSET 1/2
F1:ANG. OFFSET
F2:DIST. OFFSET
F3:PLANE OFFSET P
↓
OFFSET-MEASUREMENT
HR: 120°30'40"
HD: m
MEAS --- NP/P ---