STONEX R20 - Program Calibration

Stonex R20 – User Manual 70
Determine the HZ-collimation:
1. Set up the tripod and instrument stable.
2. Power on the instrument. Precisely level the instrument under the electronic level indication of {Level &
Plummet}.
3. In face I, accurately aim at a target about 100m away whose height was similar as the instrument. Record
the HA
L
.
4. Turn to face II, accurately aim at the same target again. Record the HA
R
.
5. Calculate the horizontal collimation error C:
𝐶 =
（ 𝐻𝐴
𝐿
− 𝐻𝐴
𝑅
± 180)
2
6. If
|
𝐶
|
> 8", a program calibration is required. Refer to Program Calibration.
V-index
When the VA (Zenith 0) is 90°0′0″, ideally the CA should be precisely perpendicular to the SA. And the actual
deviation that exists is the V-index (i).
1. Set up the tripod and instrument stable.
2. Power on the instrument. Precisely level the instrument under the electronic level indication of
{Level & Plummet}.
3. In face I, accurately aim at a target about 100m away whose height was similar as the instrument.
Record the VA
L
.
4. Turn to face II, accurately aim at the same target again. Record the VA
R
.
5. Calculate the vertical index errore I:
𝑖 =
(VA
L
− VA
R
− 360°)
2
6. If
|
𝑖
|
> 10", a program calibration is required. Refer to Program Calibration.
12.3. Program Calibration
The built-in calibration program can calibrate the following instrument error: