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10.2.2 Set backsight point by coordinate
You can set backsight azimuth angle by inputting backsight coordinate, the machine calculates
azimuth angle by station point coordinate and backsight coordinate.
Operation Procedure
Key
Display
1) In backsight setting menu, choose “2.
Coordinate”.
2.Coordina
te
REC BS
1. Angle
2. Coordinate
2) Input backsight point coordinate NBS, EBS,
ZBS, after each entry press ENT, then press OK .
To use value in memory, press Read key.
Input
backsight
point
coordinate
+
OK
Coordinate
NBS ： 1382.450 m
EBS ： 3455.235 m
ZBS ： 1234.344 m
BS BS1
Code 1
READ REC. CODE OK
3)
The machine calculates backsight azimuth by
station point coordinate and backsight point
coordinate, screen shows as right. (HAR is the
backsight azimuth)
Sighting BS
Sighting BS
HAR 117°31′50″
NO YES
4)
Sight at backsight point, press YES, finish setting
and returns to coordinate measurement menu
screen.
Coordinate
（
1/2
）
1. Observation
2. Stn data
3. Back sight data
NOTE:
Read coordinate value from memory.
Read backsight station coordinate value: Move the cursor to NBS or EBS or ZBS and press
READ.
10.3 Coordinate Measurement
·
The coordinate values of the target can be found by measuring the distance and angle to the target
based the settings of station data and azimuth angle.
The coordinate values of the target are calculated and displayed using the following formula:
