CST/BERGER 56-DGT2 Manuel D'instructions page 7

the faces toward each other. Position and level the instrument so that the distance from the
instrument to each rod is the same (measure; Fig. 2).
Take a reading on each rod with the instrument (or mark each piece of strapping where the
crosshair is sighted). Note the difference and record them. Next, move the instrument to another
point in line with the two level rods as shown in Fig. 3. Level the instrument and take readings on
the two level rods (or re-mark the two pieces of strapping with the new crosshair sightings). The
differences should be the same ( A - A'should equal B - B'). The difference between A - A' and B -
B' is the instrument error at 200 feet.
Correction of instrument error should be performed by a competent repair technician.
The instrument should be rechecked periodically to assure continued accuracy.
FUNCTIONS
Display
DISPLAY FUNCTION
Vertical angle symbol
will be shown in place of the vertical reading until the telescope
has been turned past the zero point of the horizontal axis. This
sets the zero point.
V
R L V %
V
HOLD OSET
H
0.0.0.0.0.0.0.
R
(See section 1.2.3, preference set up)
HR
Horizontal angle counterclockwise symbol
HL
Horizontal angle clockwise symbol
Battery strength symbol (See section 4, power)
G
Angular measurements are in gons (See section 1.2.3, preference set up)
Vertical reading shown as percent of grade
%
(see section 1.2.3, preference set up)
DGT2 - DGT10 • 7