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Items set and options (*: Factory setting)
Dist. mode (Distance measurement mode):Fine 'R'*/Fine AVG n= 1(Setting: 1 to 9 times)/Fine 'S'/Rapid 'R'/
Distance mode
Hdist
C&R crn.
Ref.Index
Sea level crn. (Sea level correction)
Scale factor
Coordinates
Dist.reso. (Distance resolution)
Tracking reso. (Tracking resolution)
EDM ALC
• Input the number of the times for "Fine AVG" distance measurement mode using the numeric keys.
• "Road" in "Dist. mode" is displayed only when "N-Prism" is selected in <Reflector>.
" Observation Conditions - Reflector (Target)"
• "Ref.Index" is displayed only when "C&R crn." is set to "Yes(K:Voluntary)". An arbitrary index can be input.
Road
"Road" is the specialized distance mode to measure road surface etc. by sighting obliquely and to obtain
rough measurement values. "Road" can be selected only when "Reflector type" is set to "N-Prism". Even
if "Road" is selected, "Distance mode" changes to "Tracking" automatically when "Reflector type" is set to
other than "N-Prism".
Hdist
The instrument calculates horizontal distance using slope distance values. Horizontal distance display can
be selected from the following methods.
Ground:
Distance without sea level correction
Grid:
Distance on the rectangular coordinates system calculated by sea level correction (When "Sea
level crn." is set to "No", Distance on the rectangular coordinates system without correction)
Sea level correction
The instrument calculates horizontal distance using slope distance values. As this horizontal distance
does not take height above sea level into consideration, performing spherical correction is recommended
when measuring at high altitudes. Spherical distance is calculated as follows.
Spherical distance
Where:
R = radius of the spheroid (6371.000 m)
H
= averaged elevation of the instrument point and target point
a
d
= horizontal distance
1
Rapid 'S'/Tracking/Road
: Sdist (slope distance)*/Hdist (horizontal distance)/ V.dist (height
difference)
: Ground*/Grid
: No/Yes(K=0.142)/Yes(K=0.20)*/Yes(K:Voluntary)
: -10.000 to 15.000 (0.000*)
: Yes/No*
: 0.50000000 to 2.00000000 (1.00000000*)
: N-E-Z*/E-N-Z
: 0.1 mm/1 mm*
: 1 mm/10 mm*
: Free*/Hold
R Ha
–
×
=
----------------- -
d 1
R
Slope distance
Ground
Grid
110
19. CHANGING THE SETTINGS
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