Sokkia SET 550 Setup And Operation page 26

Backsight
Backsight
Use this method when you have 2
Use this method when you have 2
known survey points with the
known survey points with the
instrument established on one and the
instrument established on one and the
mirror target on the other survey point
mirror target on the other survey point
From the " MEAS
From the " MEAS
[COORD] and then
[COORD] and then
Orientation " . Set the instrument
Orientation " . Set the instrument
coordinates with
coordinates with
and then select [OK] and return to
and then select [OK] and return to
" Backsight "
" Backsight "
Select " Coord " and then enter the
Select " Coord " and then enter the
backsight target coordinates (NBS,
backsight target coordinates (NBS,
EBS, ZBS) and select [OK]
EBS, ZBS) and select [OK]
Sight in the target and inspect the
Sight in the target and inspect the
" Azmth " (it should be reasonable for
" Azmth " (it should be reasonable for
your coordinate system).
your coordinate system).
Select [YES] to calibrate. If you don
Select [YES] to calibrate. If you don
select [YES] the coordinate system is
select [YES] the coordinate system is
still random
still random
by Coordinate
by Coordinate
" menu select
" menu select
" Stn .
" Stn .
" Stn . Coordinate "
" Stn . Coordinate "
' t
' t