3-90
3
MENU/3: Sett
Menu Item Conditions
2:Dist
Scale Factor
Numerical input between
0.999600 and 1.000400.
Temp&Press Correction
ON/OFF
Sea Level Adjustment
ON/OFF
C&R Correction
OFF : C&R OFF
0.132 : C&R ON (coef. 0.132)
0.200 : C&R ON (coef. 0.200)
As the surface of the earth is curved, the vertical difference (VD
and Z) at the measurement point, as referenced to the horizontal
plane, will inevitably include some error. This error is called
curvature error. Likewise, as the density of the air surrounding the
earth decreases with altitude, light is refracted when it passes
through the air. The subsequent error caused by this refraction is
called refraction error.
＞Ｓｃａｌｅ：１ ．００００００
Ｔ－Ｐ ：ＯＮ
Ｓｅａ Ｌｖｌ：ＯＮ
Ｃ＆Ｒ ：０．１３２
１
O
PA'
A
AI'
AI
A'
Curvature error (A A')
P
Refraction error (AI AI')
Horizontal
direction
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