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12.HEIGHT DIFFERENCE MEASUREMENT
Height difference measurement allows the user to calculate the relative height between a known point
and a specified point. The instrument is moved from instrument station to instrument station along a
route from the known point to the unknown point taking measurements at each section. The total of
measurements at all sections gives the height difference between the known point and the specified
point. This method is particularly useful when the known and unknown points are far apart, relative
height is great, or there are obstacles preventing sighting.
• Except when special circumstances exist, there should be an even number of sections along a
route.
The route between bench mark and bench mark must be set before starting measurement. Select an
existing route or create a new route.
• Route setup is performed in <Route menu>.
• It is possible to select a partially completed route and recommence measurement from where you
left off.
• When performing double-run leveling, each run is treated as a separate route.
• It is possible to change the route ID and memo of routes containing measurement data.
• Procedures for reobservation are explained elsewhere in this manual.
"14.4 Reobserved Route Merge"
• The maximum number of routes per JOB is 100.
• The maximum number of fixed points/end points per route is 100 (2000 total in all routes incl. fixed
points/end points)
• The maximum number of start conditions per route is 100 (1000 total in all routes incl. start
conditions)
PROCEDURE Selecting a route
1. Select "Meas" in <Menu>.
12.1
Route Setup
Menu
1.Meas
2.Management
3.Config
4.Calculation
DL-501_E.book 45 ページ ２０１５年９月１７日 木曜日 午後１時２１分
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