93
E.g.:
1)
If
p1,
p2,
p3
and
OccPt
fall
on
the
circle,
the
result
can
not
be
computed.
2)
If
the
point
is
near
the
circle
then
the
result
is
unstable.
3)
Residuals
are
useful
to
avoid
that
observations
of
low
quality
will
be
used
for
the
resection
computation.
However,
in
case
of
a
small
number
of
observations
or
a
bad
geometrical
constellation
of
the
points
it
is
possible
that
one
bad
observation
influences
several
residuals.
4)
The
unit
of
residuals
is
similar
to
the
unit
of
the
measurements
performed.
However
the
residuals
of
horizontal
angle
and
vertical
angle
are
always
displayed
in
decimals.
E.g.:
3°49
′
50
″
shows
as
3.4950
5)
The
message
‘Occupied
point
coordinate
is
not
computed
’
is
shown
if
the
calculated
scale
is
not
within
0.9
～
1.1.
6)
More
than
one
measurement
to
the
same
point
can
be
performed
during
resection.
In
that
case
the
character
‘*’
is
placed
behind
the
point
number.
The
average
of
the
measurements
to
same
point
is
used
for
the
calculations.
7)
The
following
table
shows
which
residuals
will
be
shown.
△
H:
The
residual
of
horizontal
angle.
△
V:
The
residual
of
vertical
angle
△
SD:
The
residual
of
slope
distance.
NOTE:
The
residuals
which
will
be
shown
depend
on
the
measuring
mode
and
whether
elevation
is
calculated.
Calc. Elevation
：
ON Calc. Elevation
：
OFF
Meas Mode
：
H/V/SD
△
H
，△
V
，△
SD
△
H
Meas Mode
：
H/V
△
H
，△
V
△
H
11.1.2 Elevation of Occupied Point
If
the
elevation
of
a
point
to
be
occupied
is
not
known
but
a
point
of
known
elevation
can
be
observed,
then
the
station
elevation
can
be
computed.
Example
：
OPERATIONAL STEPS
KEY
DISPLAY
①
In [Occ. & BS Set] main menu,
click [Elevation].
※
1)
[Elevation]
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