2. PREPARATION FOR MEASUREMENT
2-8
Prism type-2 (Normal prism)
Distance Measuring error
Angle measuring error
Inclined angle (degree)
Inclined angle
Prism type - 3 or 5 (Prism unit A2/A3)
Distance Measuring error
Angle measuring error
Inclined angle (degree)
Inclined angle
(Example) In case Prism constant value (C) = 0mm, Prism inclination = 20
, Measuring distance =
100m by Prism type-2 :
Distance error is :
From the graph prism type-2, the distance error shows in increasing range quantity 2.5mm
along curved line of C=0 when prism inclination is 20
.
Angle error is :
From the graph prism type-2, along curved line of C=0 with prism inclination of 20
, find
angle error quantity (14.2mm) and calculate angle error by the following formula.
Angle error = tan
-1
Angle error range
Measuring distance
Angle error = tan
-1
14.2
100
103
Angle
error
range
Increasing
distance
range
Increasing
distance
range
( mm )
( mm )
( mm )
Angle
error
range
( mm )
= 29”
Summary of Contents for AP-L1A
Page 1: ...INSTRUCTION MANUAL AUTOMATIC TRACKING TOTAL STATION AP L1A AP L1AN...
Page 14: ...1 NOMENCLATURE AND FUNCTIONS 1 3 2 The details of label will be differed by the market...
Page 82: ...11 SETTING ATMOSPHERIC CORRECTION 11 4 Temprerature C Temprerature F...
Page 83: ...11 SETTING ATMOSPHERIC CORRECTION 11 5 Temprerature F...