Topcon AP-L1A - 4 Angle Measurement; Measuring Horizontal Angle Right and Vertical Angle

4. ANGLE MEASUREMENT
4-1
4. ANGLE MEASUREMENT
4.1 Measuring Horizontal Angle Right and Vertical Angle
Make sure the mode is in Angle measurement.
Operating procedure Operating key Display
 Collimate the 1st target (A).
V: 90 10 '20"
HR : 120 30' 40"
0SET HSET R/L 1
 Set horizontal angle of target A at 0 00'
00". Press [F1](0 set)key, [F3](YES)
key.
[F1]
H-0SET

OK?
– – – – [YES][NO]
[F3]
V: 90 10 '20"
HR : 0 00' 00"
0SET HSET R/L 1
 Collimate the 2nd target (B).
The required H/V angle to target B will
be displayed.
V: 9810'20"
HR : 16040'20"
0SET HSET R/L 1
Note : From a known coordinate value of the instrument point and the backsight point, the AP-L1A
can set a directional angle. See chapter 6.1, "Setting a Direction Angle for Horizontal
Orientation".
How to Collimate
 Point the telescope toward the light. Turn the diopter ring and adjust the diopter so that the cross
hairs are clearly observed.
(Turn the diopter ring toward you first and then backward to focus.)
 Aim the target at the peak of the triangle mark of the sighting collimator. Allow a certain space
between the sighting collimator and yourself for collimating.
 Focus the target with the focusing knob.
Reference