CST/BERGER 56-DGT2 User manual

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Models
56-DGT2
56-DGT10
Electronic Digital
Transit/Theodolite
INSTRUCTION MANUAL

1
3
4
5
7
2
6
8
9
10
FIG. 1
11
12
13
14
15
16
17
18
19
20
2 • DGT2 - DGT10

DGT2 - DGT10 • 3
FIG. 2
FIG. 3
FIG. 4 FIG. 5
FIG. 6 FIG. 7

4 • DGT2 - DGT10
FIG. 8 FIG. 9
FIG. 10 FIG. 11
FIG. 12
R L V %
HOLD OSET
V
-8.8.8.8.8.8.8.
H RL
8.8.8.8.8.8.8.
G
FIG. 13
R L V %
HOLD OSET
V
H R
0.0.0.0.0.0.0.
R L V %
HOLD OSET
V
9 0 0 0 0 0
H R
0 0 0 0 0
G
FIG. 14

DGT2 - DGT10 • 5
Full
Power
Partial
Power
Low
Power
No
Power
FIG. 15
FIG. 16 FIG. 17
FIG. 18 FIG. 19
FIG. 20

6 • DGT2 - DGT10
Thank you for purchasing the Electronic Digital Transit/Theodolite. Please read this
manual thoroughly before operation
MODELS
56-DGT2 2 Sec. Electronic Digital Transit/Theodolite
56-DGT10 5 Sec. Electronic Digital Transit/Theodolite
Copyright© 2005-2006 CST/Berger. All rights reserved
The information contained herein is proprietary information of CST/Berger, and is subject to
change without notice.
This document shall not be copied or otherwise reproduced without CST/Berger's written consent.
FEATURES FIG.1
1 Targeting Sight 11 Carrying Handle
2 Objective Lens 12 Handle Screw
3 Horizontal Clamp Knob 13 Plate Level
4 Horizontal Tangent Screw 14 Tribrach Clamp Knob (DGT10 Only)
5 Display Window 15 Battery Case
6 Operation Keys 16 Focusing Knob
7 Leveling Screws 17 Eyepiece
8 Instrument Center Mark 18 Vertical Clamp Knob
9 Optical Plummet 19 Vertical Tangent Screw
10 Tripod Base Plate 20 Circular Level (DGT10 Only)
CALIBRATION
This quality CST/Berger instrument has been inspected twice for accuracy before leaving the
factory. The instrument has also been given the best protection possible against damage during
transportation. Even with these precautions, the instrument is subject to rough handling during
shipment. To protect yourself against the possibility of using an instrument which is out of
adjustment, we suggest that you have the instrument checked by a competent person before
using it.
Note: Please read the manual thoroughly before starting the following test.
The following test can be performed to check the instrument’s accuracy:
Set up the instrument in an area that is as level as possible and which is about 220 feet long. Place
two matching level rods (or drive two pieces of strapping into the ground)about 200 feet apart with
EN

DGT2 - DGT10 • 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
V
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.
(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)
GAngular 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)
R L V %
HOLD OSET
V
H R
0.0.0.0.0.0.0.

8 • DGT2 - DGT10
Operating Keys
KEY
SYMBOL FUNCTION OPERATION
R/L Setting horizontal
angle rotational
direction
Used to switch horizontal angle between clockwise
rotation (HR) and counterclockwise rotation (H L).
The direction changes each time the button
is pressed.
HOLD Locking horizontal
angle reading
Used to lock current horizontal angle into display. The
horizontal angle reading will flash when this button
is pressed. The instrument can be turned without
changing the horizontal reading. Pressing the
button again will unlock the horizontal angle display.
Illuminating the|
display and the
crosshairs
Used to light the display and crosshairs. Press to light
display and crosshairs, press again to shut
off the light.
V% Vertical angle to
percent of grade
Used to switch the vertical angle display between
degrees/gons and percent of grade. The “%” sign
will be shown on the display when percent of grade
is active.
0SET Zero the horizontal
angle reading Used to zero the reading of the horizontal angle display. Press to zero the reading at any point.
Power ON/OFF Used to turn the display on and off

DGT2 - DGT10 • 9
Setting Up Your Measurement Preferences
A) Turn the power on
B) Press “R/L” and “V%” at the same time. A tone will be heard
and the display
should look similar to what’s shown at right.
C) To specify your measurement preferences:
PRESS TO DISPLAY
R/L
Change the readout of the horizontal
and vertical angle display to show 5
second or 10 second readings. (The
accuracy of this instrument is 10
seconds, not 5 seconds. Changing
the readout does not make the
instrument more accurate.)
V% Change between 360 degree readout
or 400 gon readout for horizontal and
vertical angle measurement.
HOLD
Change the time of automatic power
shut off for the display. The three
modes are
“0”, no auto power off
“20”,20 minute auto power off
“30”,30 minute auto power off
0SET
Change the zero points and angle
pattern of the vertical circle. The
three modes are Ua, Ub and UC. The
following diagrams show the
different vertical
measurement modes.
Change between hearing a tone or
not when the horizontal angle reads
0º, 90º, 180º, 270º
20 360
0UC
10 360
b 0 UC
10 360
b 0 UC
10 360
b 0 UC
10 360
b 0 UC
10 360
b 0 UC

10 • DGT2 - DGT10
Once all preferences have been input, press the “H/R” and “V%” at the same time. A
long tone will be heard and the display will return to normal.

PREPARATION FOR MEASUREMENT
Mounting And Leveling
Mount and level the instrument carefully to get the best performance.
1. Place the tripod over the ground datum point and tighten the legs.
2. Attach the instrument to the tripod and tighten snugly (Follow Step 3 for the DGT10 only)
3. On the DGT10, roughly level the instrument with the circular vial.
A) Use level screws “A” and “B” to move the air bubble in the circular vial so it is
centered left to right. (Fig. 4)
B) Use level screw “C” to move the air bubble to the center of the vial. (Fig. 5)
4. Fine tune level the instrument with the plate level:
A) Turn the instrument until the plate level is in either one of the positions shown. Then use the
“A” and “B” level screws to center the bubble in the level. (Fig .6)
B) Turn the instrument 90° (100 g) and center the air bubble in the vial using level
screw “C”. (Fig .7)
C) Repeat steps A and B until the level stays centered in any direction. If the plate level will not
stay centered, see section 5.2 to adjust the vial.
5. Centering the instrument using the optical plummet
A) Adjust the eyepiece so the bull's-eye reticle comes into sharp focus. (Fig .8)
B) Adjust focus knob so ground target comes into sharp focus. (Fig 8)
C) Slightly loosen the tripod fastening screw and move the instrument until the ground target is
centered in the optical plummet. (Fig .9)
D) Tighten the tripod fastening screw and recheck the level vials by following steps 3 and
4 again. (Fig .10)
Telescope Eyepiece Focus
Point the telescope toward a bright area and turn the telescope eyepiece until the crosshairs
come into sharp focus.
Avoid parallax, the shifting seen between the target and the crosshairs when your eye
moves while sighting through the telescope. Parallax will cause inaccurate measurements.
To avoid parallax, perform the following:
1. Focus the telescope on a target.
2. You should be able to move your eye up and down or left and right without
DGT2 - DGT10 • 11

12 • DGT2 - DGT10
seeing the target shift with respect to the crosshairs.
3. If there is parallax, readjust the eyepiece.
Always remove any parallax before operation to assure accurate measurements.
Aiming At The Target
Loosen the clamps and point at the target using the targeting sights located above and below
the telescope. (Fig .11)
Allow some space between your eye and the targeting sight.
MEASUREMENT
Power
1. Turn the power on. All segments of the display will light for 2 seconds. (Fig 12)
2. The vertical reading will then be shown as “SER”, which stands for “SET” (Fig .13)
3. Rotate the telescope to set the vertical “0” point. This is done to cause the zero pointer to pass
a sensor and start vertical angle measurement. (Fig .14)
4. Check battery power:
Full, partial and low power,measurement is possible. No power, no measurement possible;
replace the batteries.(Fig .15)
Note: Battery operating time will vary depending on type and brand and operating
temperature. Be sure to keep an extra set of alkaline type AA batteries in the carrying
case. For any other questions about the batteries, see section 4.
Measuring Horizontal Angles (FIG 16)
1. Aim at target “A”
2. Press “0SET” key to zero out horizontal angle reading, HR 0°00'00".
3. Aim at second target, “B”, and the angle between “A” and “B” will be displayed, HR 30°15’00".
“HR” shown on the display means that the horizontal angle reading increases as you
turn the instrument clockwise.
“H L” shown on the display means that the horizontal angle reading increases as you turn the
instrument counterclockwise.

Presetting Horizontal Angles
1. Turn the instrument until the desired horizontal angle is shown on the display.
HR 60°00’00"
2. Press the “HOLD” button. HR 60°00'00" will blink on and off.
3. Aim the instrument at the target and press the “HOLD” button again. The horizontal angle will
be released from that point. HR 60°00'00" will be the start point for horizontal
angle measurement.
Measuring Vertical Angles
There are three different vertical scales to choose from when measuring vertical angles. See the
three scales in section 1.2.3., performance setup. Choose the vertical angle mode you wish to use
from among the performance setup choices.
Measuring Percent Of Grade (FIG 17)
By pressing the “V%” key, you can switch from vertical angular measurement shown in degrees
to percent of grade shown as 0 to 100% slope. The “%” symbol will be seen on the display next
to the vertical reading when in this mode.
Stadia Measurements
1. Distance measurement can be done using the stadia hairs of the reticle. (Fig .18)
2. Read the length " l " of a level rod shown between the stadia hairs. (Fig .19)
3. The distance to the target is 100 multiplied by " l". The distance between point A and point
B is L. (Fig .20)
L=100 x " l"
Displayed Error Codes
DGT2 - DGT10 • 13
DISPLAY CAUSE PRESS TO
CLEAR ERROR
E01 Instrument spun horizontally at too
great a speed for the horizontal detector.
E02 Telescope spun vertically at too great a
speed for the vertical detector.
E03 Error in the vertical angle measurement
system. Re-start the instrument.
(If error is still shown, return instrument for repair.)
E04 Error in the horizontal angle measurement system.
Re-start the instrument
(If error is still shown, return instrument for repair.)
E06 Error in the setting of the vertical zero point.
Return instrument for repair. N/A
OSET
V%
2X
2X

HANDLING OF POWER SUPPLY
Removing The Battery Compartment
Push down on the battery compartment latch and pull the top of the battery compartment
away from the instrument. (Fig .21)
Replacing Batteries
1. Push down on the hook to remove the metal battery door. (Fig .22)
2. Install batteries as shown. (Fig .23)
3. Slip the projection shown on the metal battery door into the slot shown and push down on the
door until the hook locks the door in place. (Fig .24)
Mounting Battery Compartment
1. Slip the projection on the bottom of the battery compartment into the slot . (Fig .25)
2. Push the top of the battery compartment toward the housing until the battery compartment
latch clicks into place.
CHECKS AND ADJUSTMENTS
Adjustment Precautions (FIG 26)
When attempting to check and adjust an instrument, corrections must be done in a certain order or
the adjustments will not be correct.
Order of adjustment:
1. Check and adjust the plate vial.
2. Check and adjust the circular vial.
3. Check and adjust the optical plummet.
Always recheck your adjustments. We recommend that any adjustments, other than those shown,
be done by a qualified Instrument repair technician.
Checking And Adjusting
1. The plate vial
A) Place the plate vial parallel with the level screws, A and B. Center the bubble using these two
level screws.
B) Turn the instrument 90° and center the bubble using level screw C. (FIG.27)
14 • DGT2 - DGT10

C) Return to the original position in step A. Recheck the bubble and center as necessary. Rotate
the instrument 180° (200g). The bubble should still be centered in the vial. If not, go to step D.
D) Using the adjusting pin provided in the
case, turn the screw until the bubble
moves halfway back to its original
position.
E) Return the instrument to its original
position follows steps A through C.
Repeat these steps until the bubble
stays centered in all positions.
2. The Circular Vial (DGT10 Only)
Part 1, adjusting the plate vial, should have been done prior to this step.
If the circular vial is centered after leveling the plate vial,
then no further adjustment is necessary. If not, proceed with
the following adjustment.
Using the adjusting pin provided in the case, turn the
adjusting screws until the bubble is centered in the vial.
DO NOT OVER TIGHTEN THE ADJUSTING SCREWS.
Loosen one screw 1/4 turn, then tighten one screw 1/4 turn.
3. Optical Plummet
This adjustment is required to make the line of sight of the
optical plummet coincide with the vertical axis.
A) Point the optical plummet at a ground target. This can be
done by adjusting the level screws or by loosening the
instrument fastening screw and moving the instrument
over the target.
B) Turn the instrument 180° (200g) around and re-sight
the target through the optical plummet. If the target is
still centered, no adjustment is necessary. If not, go to
step C.
C) Remove the adjusting screw cover from the optical
plummet. Unscrew in a counterclockwise direction. This
will expose four reticle adjusting screws.
DGT2 - DGT10 • 15

D) Using the adjusting pin
provided in the case, turn the
reticle adjusting screws until
half the displacement has
been removed. Loosen one
screw 1/4 turn, then tighten
the opposing screw 1/4 turn.
E) Repeat steps A through D
until there is no displacement
of the target when the
instrument is turned about its
vertical axis.
Setting The Vertical Zero Position
16 • DGT2 - DGT10
PROCEDURE KEY DISPLAY
Accurately level the instrument N/A
Press and hold the V% key while pressing
the power key. The instrument display will
enter the vertical zero adjustment mode.
Turn the telescope past the zero point.
The display will show "STEP 1".
Sight the telescope at a target that is level
with the instrument within 10 seconds.
Press "V%". This will store the data for the
first point. The display will show "STEP 2".
Reverse the telescope and re-sight the
original target. Press the "V%" key. This will
store the data for the second point and
establish a vertical zero point at level. Once a
key is pressed, the instrument will beep and
return to regular measurement mode.
V%
2X
V%
V%
V
O S E
L
V
H R
S E - - 1
L
9 5 1 0 2 0
V
H R
S E - - 2
L
9 5 1 0 2 0
V
2 6 1 1 2 4 3
H R
1 8 0 0 0 0 0

TRIBRACH (FOR DGT10 ONLY)
Removal:
Turn the locking lever 180° counterclockwise (FIG. 28). The instrument can now be removed from
the tribrach.
Attachment:
Line up the tongue on the instrument with the notch in the tribrach (FIG. 29). Turn the locking lever
180° clockwise.
ACCESSORIES
Standard Equipment:
Carry case, Sunshade, Tool kit, Rain cover, Drying rag, Plumb bob
Optional equipment:
Rechargeable battery, Charger, Tripod, Diagonal eyepiece, Level rod, Solar filter, Triangle tribrach,
Solar reticle.
MAINTENANCE AND CARE
• Use care to avoid shock to the instrument. Always provide some cushioning to minimize risk of
shock during transportation. The instrument cannot be expected to function properly if exposed
to heavy shock.
• Check the battery indicator. Be sure to check the voltage level before using the instrument.
• Carrying the instrument. Always remove the instrument from the tripod when carrying at the job
site. If the instrument must be carried on the tripod, hold the instrument as vertically as possible
and keep it in front of you. Never carry the instrument horizontally over your shoulder. Any long
distance transport should be done with the instrument in the carrying case.
• Do not expose the instrument to direct sunlight for long periods. Never leave the instrument
exposed to extreme heat longer than necessary. It could affect the instrument's performance.
• Store the instrument properly. The instrument should be stored in an area of low humidity and
where the temperature will not exceed 110° F (45° C). Always remove the batteries before
storing the instrument.
• Cleaning the instrument. Any dust on the lenses should be removed first with a small brush,
then use a lens tissue or soft clean cloth (use a light touch to avoid scratching the lenses).
Dry the instrument after use in the rain. Do not use harsh chemicals to clean the
instrument or carrying case. A mild detergent or water dampened rag is all that is necessary.
DGT2 - DGT10 • 17

ENVIRONMENTAL PROTECTION
Recycle raw materials instead of disposing as waste. The machine, accessories and
packaging should be sorted for environmental-friendly recycling. Do not throw used batteries
into waste, fire or water but dispose of in an environmentally friendly manner according to
the applicable legal regulations.
SPECIFICATIONS
Description 56-DGT2 56-DGT10
Telescope
Overall Length 155mm (6.1") 155mm (6.1")
Objective aperture 45mm (1.77") 45mm (1.77")
Magnification 30X 30X
Image Erect Erect
Field of view 1° 30' 1° 30'
Resolving power 2.5" 2.5"
Minimum focus 1.3M (53") 1.3M (53")
Stadia Ratio 100 to 1 100 to 1
Stadia constant 0 0
ELECTRONIC ANGLE MEASUREMENT
Method Incremental Incremental
Minimum reading 5/1(1mgon/0.5 mgon) 5"/10" (3/5 mgon)
Accuracy** 2” (0.5 mgon) 5" (1.5 mgon)
Diameter of circle 82mm (3.22") 82mm (3.22")
ILLUMINATION Display & Reticle Display & Reticle
OPTICAL PLUMMET
Magnification 3X 3X
Field of view 5° 5°
Focusing range 0.5 M to infinity (20" to infinity) 0.5 M to infinity (20" to infinity)
LEVEL VIAL SENSITIVITY
Plate vial 30" per 2mm 30" per 2mm
Circular vial 8' per 2mm 8' per 2mm
18 • DGT2 - DGT10

DISPLAY OPERATING RANGE
Operating voltage 4-6 VDC 4-6 VDC
required (4) AA Batteries (4) AA Batteries
Operating time 15 hrs continuous use 15 hrs continuous use
(Alkaline batteries) @ 20°C (68°F) @ 20°C (68°F)
Operating Temperature range -20° to +50°C -20° to +50°C
(-4° to +122°F) (-4° to +122°F)
SIZE 150x160x320mm 145x200x300mm
WEIGHT 4.4Kg inst only 4.4 Kg inst only
6.8 Kg w/case 6.8 Kg w/case
** Standard deviation based on DIN18723.
WARRANTY
ONE Year Warranty. CST/Berger, a division of Stanley Works, warrants this electronic measuring
tool against deficiencies in material and workmanship for a period of one year from the date of
purchase. Deficient products will be repaired or replaced at CST/Berger's option. Proof of
purchase is required.
For warranty and repair information, contact:
Your Local Distributor, or CST/Berger.
This Warranty does not cover deficiencies caused by accidental damage, wear and tear, use other
than in accordance with the manufacturer's instructions or repair or alteration of this product not
authorized by CST/Berger.
Repair or replacement under this Warranty does not affect the expiry date of the Warranty. To the
extent permitted by law, CST/Berger shall not be liable under this Warranty for indirect or
consequential loss resulting from deficiencies in this product.
Agents of CST/Berger cannot change this warranty.
This Warranty may not be varied without the authorization of CST/Berger.
This warranty may provide you with additional rights that vary by state, province or nation.
IMPORTANT NOTE: The customer is responsible for the correct use and care of the instrument.
Moreover he is completely responsible for checking the job along its prosecution, and therefore for
the calibration of the instrument. Calibration and care are not covered by warranty.
Subject to change without notice
DGT2 - DGT10 • 19

Gracias por su confianza en nuestro teodolito eléctronico digital. Se recomienda
leer atentamente estas instrucciones de uso, antes de la primera utilización del
instrumento.
MODELOS
56-DGT2 Teodolito eléctronico digital 2segundos
56-DGT10 Teodolito eléctronico digital 5 segundos
Copyright© 2002-2003 CST/Berger. Derechos reservados.
Toda esta información es propiedad de CST/Berger. CST se reserva el derecho de aportar
modificaciones técnicas sin previo aviso.
Este documento no debe ser copiado o reproducido sin el consentimiento escrito de CST/Berger.
CARACTERÍSTICAS FIG. 1
1 Mira del objetivo ó punto de mira 11 Asa de transporte
2 Objetivo 12 Tornillo de bloqueo de la asa
3 Tornillo de presión del eje horizontal 13 Nivel tubular
4 Tornillo de coincidencia del eje horizontal 14 Cierre de la base nivelante (sólo DGT10)
5 Pantalla 15 Tapa de la batería
6 Teclado 16 Enfoque del objetivo
7 Tornillos de nivelación 17 Enfoque del retículo
8 Punto central del eje de muñones 18 Tornillo de presión del eje vertical
9 Plomada óptica 19 Tornillo de coincidencia del eje vertical
10 Base nivelante 20 Nivel esférico (sólo DGT-10)
CALIBRACIÓN
La precisión del teodolito CST/Berger ha sido comprobada antes de su salida de la fábrica.
El instrumento ha sido embalado adecuadamente para protegerlo de las incidencias del
transporte.
Sin embargo durante el transporte puede ser manjado sin cuidado. Para evitar el uso del
instrumento descorregido se aconseja comprobarlo antes de su utilización.
NNoottaa: Leer atentamente el manual antes de realizar el test de verificación.
20 • DGT2 - DGT10
E