Nikon DTM-332, DTM-352, DTM-362 User Guide
Total Station DTM-302 Series
Instruction Manual
DTM-332
DTM-352
DTM-362
H165E 05.10.TH.10
Contact Information
Nikon-Trimble Co. Limited
Copyright and Trademarks
© 2005, Nikon-Trimble Co. Limited. All rights
reserved.
All trademarks are the property of their
respective owners.
It is prohibited to alter this manual in part or
whole without express permission.
The contents of this manual are subject to change
without notice. Although every effort has been
made to ensure the accuracy of this manual,
please contact your dealer if you find anything in
it that is incorrect or unclear.
Release Notice
This is the October 2005 release of the Total
Station DTM-302 Series Instruction Manual, part
number H165E. It applies to release 05.10.TH.10
of the Total Station DTM-302 series.
Notices
USA
FCC 15B Class B satisfied.
This equipment has been tested and found to
comply with the limits for a Class B personal
computer and peripherals, pursuant to Part 15 of
the FCC Rules. These limits are designed to
provide reasonable protection against harmful
interference in a residential installation. This
equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in
accordance with the instructions, may cause
harmful interference to radio communications.
However, there is no guarantee that interference
will not occur in a particular installation.
If this equipment does cause harmful interference
to radio or television reception, which can be
determined by turning the equipment off and on,
the user is encouraged to try to correct the
interference by one or more of the following
measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment
and receiver.
– Connect the equipment into an outlet on a
circuit different from that to which the receiver
is connected.
– Consult the dealer or an experienced radio/TV
technician for help.
C
Warning – This equipment has
been certified to comply with the
limits for a Class B personal
computer and peripherals,
pursuant to Subpart B of Part 15
of FCC Rules. Only peripherals
(computer input/output devices,
terminals, printers, etc.) certified
to comply with the Class B limits
may be attached to this
equipment. Operation with
non-certified personal computer
and/or peripherals is likely to
result in interference to radio and
TV reception. The connection of
a non-shielded equipment
interface cable to this equipment
will invalidate the FCC
Certification of this device and
may cause interference levels
which exceed the limits
established by the FCC for this
equipment.
You are cautioned that changes
or modifications not expressly
approved by the party
responsible for compliance could
void your authority to operate the
equipment.
European Union
EU EMC Directive satisfied.
Canada
This Class B digital apparatus meets all
requirements of the Canadian InterferenceCausing Equipment Regulations.
Cet appareil numérique de la Class B respecte
toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
Taiwan
Battery Recycling
Requirements
The product contains a
removable battery. Taiwanese
regulations require that waste batteries are
recycled.
Notice to Our European
Union Customers
For product recycling instructions and
more information, please go to:
www.trimble.com/environment/summ
ary.html
Recycling in Europe
To recycle Trimble WEEE,
call: +31 497 53 2430,
and ask for the “WEEE associate,”
or mail a request for recycling instructions to:
Trimble Europe BV
c/o Menlo Worldwide Logistics
Meerheide 45
5521 DZ Eersel, NL
Safety 1
In this chapter:
Q Introduction
Q LED Safety
Q Warnings and Cautions
Safety
Introduction
For your safety, read this instruction manual carefully and thoroughly before using
the DTM-302 series instrument. Although Nikon products are designed for
maximum safety, using them incorrectly or disregarding the instructions can cause
personal injury or property damage.
You should also read the instruction manual for the battery charger, and the
documentation for any other equipment that you use with a DTM-302 series
instrument.
Note – Always keep the manual near the instrument for easy reference.
vi Total Station DTM-302 Series Instruction Manual
Safety
LED Safety
The DTM-362/352/332 is a Class 1 LED instrument.
Class 1 LED instruments do not require any special precautions, signage or training
for LED safety.
Specifications for LED emission
Wave length 850 nm
Drive method CW
Output power < 200 µW
Repetition rate 15 KHz
Safety class
E.U. EN60825-1/Am.2:2001 (IEC60825-1/Am.2:2001), class 1
Japan JIS C6802-1997, class 1
Total Station DTM-302 Series Instruction Manual vii
Safety
Warnings and Cautions
The following conventions are used to indicate safety instructions:
Warning – Warnings alert you to situations that could cause death or serious
C
injury.
Caution – Cautions alert you to situations that could cause injury or property
C
damage.
Always read and follow the instructions carefully.
Warnings
Before using the instrument, read the following warnings and follow the
instructions that they provide:
Warning – Never look at the sun through the telescope. If you do, you may
C
damage or lose your eyesight.
Warning – DTM-302 series instruments are not designed to be
C
explosion-proof. Do not use the instrument in coal mines, in areas
contaminated with coal dust, or near other flammable substances.
Warning – Never disassemble, modify, or repair the instrument yourself. If you
C
do, you may receive electric shocks or burns, or the instrument may catch fire.
You may also impair the accuracy of the instrument.
Warning – Use only the specified battery charger (part number Q-75U/E) to
C
charge the battery pack (part number BC-65). Using other chargers, such as
a charger with part number Q-7U/E or Q-7C, may cause the battery pack to
catch fire or rupture. (The BC-65 cannot be charged by the Q-7U/E or Q-7C.)
viii Total Station DTM-302 Series Instruction Manual
Warning – Do not cover the battery charger while the battery pack is being
C
recharged. The charger must be able to dissipate heat adequately. Coverings
such as blankets or clothing can cause the charger to overheat.
Warning – Avoid recharging the battery pack in humid or dusty places, in
C
direct sunlight, or near heat sources. Do not recharge the battery pack when it
is wet. If you do, you may receive electric shocks or burns, or the battery pack
may overheat or catch fire.
Warning – Although the battery pack (part number BC-65) has an auto-reset
C
circuit breaker, you should take care not to short circuit the contacts. Short
circuits can cause the battery pack to catch fire or burn you.
Warning – Never burn or heat the battery. Doing so may cause the battery to
C
leak or rupture. A leaking or ruptured battery can cause serious injury.
Warning – Before storing the battery pack or battery charger, cover the
C
contact points with insulation tape. If you do not cover the contact points, the
battery pack or charger may short circuit, causing fire, burns, or damage to
the instrument.
Safety
Warning – The battery BC-65 is not waterproof on its own. Do not get the
C
battery wet when it is removed from the instrument. If water seeps into the
battery, it may cause a fire or burns.
Total Station DTM-302 Series Instruction Manual ix
Safety
Cautions
Before using the instrument, read the following cautions and follow the instructions
that they provide:
Caution – Do not use controls or adjustments, or carry out any procedures,
C
other than those specified in this document. Otherwise you may be exposed
to hazardous radiation.
Caution – The tops of the tripod ferrules are very sharp. When handling or
C
carrying the tripod, take care to avoid injuring yourself on the ferrules.
Caution – Before carrying the tripod or the instrument in the carrying case,
C
check the shoulder strap and its clasp. If the strap is damaged or the clasp is
not securely fastened, the carrying case may fall, causing personal injury or
instrument damage.
Caution – Before setting up the tripod, make sure that no-one’s hands or feet
C
are underneath it. When the legs of the tripod are being driven into the
ground, they could pierce hands or feet.
Caution – After mounting the instrument on the tripod, securely fasten the
C
thumb screws on the tripod legs. If the thumb screws are not securely
fastened, the tripod may collapse, causing personal injury or instrument
damage.
Caution – After mounting the instrument on the tripod, securely fasten the
C
clamp screw on the tripod. If the clamp screw is not securely fastened, the
instrument may fall off the tripod, causing personal injury or instrument
damage.
Caution – Securely fasten the leveling base clamp knob. If the knob is not
C
securely fastened, the leveling base may come loose or fall off when you lift
the instrument, causing personal injury or instrument damage.
x Total Station DTM-302 Series Instruction Manual
Caution – Do not stack objects on the plastic carrying case, or use it as a
C
stool. The plastic carrying case is unstable and its surface is slippery.
Stacking or sitting on the plastic carrying case may cause personal injury or
instrument damage.
Caution – Do not swing or throw the plumb bob. You could injure yourself or
C
other people.
Caution – Before charging the battery pack, read the instruction manual for
C
the quick charger (part number Q-75U/E).
Safety
Total Station DTM-302 Series Instruction Manual xi
Safety
xii Total Station DTM-302 Series Instruction Manual
Contents
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi
LED Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . viii
1 Introduction . . . . . . . . . . . . . . . . . . . . 1
Welcome . . . . . . . . . . . . . . . . . . . . . . . . . 2
Instrument accuracy and display. . . . . . . . . . . 2
Parts of the Instrument . . . . . . . . . . . . . . . . . . . 4
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Preparation. . . . . . . . . . . . . . . . . . . . . 9
Unpacking and Packing the Instrument . . . . . . . . . . . . 10
Unpacking . . . . . . . . . . . . . . . . . . 10
Packing . . . . . . . . . . . . . . . . . . . 10
Charging and Discharging the Battery Pack . . . . . . . . . . 10
Detaching and Re-Attaching the Battery Pack. . . . . . . . . 13
Setting Up the Tripod. . . . . . . . . . . . . . . . . . . . 14
Centering . . . . . . . . . . . . . . . . . . . . . . . . . 15
Centering using the optical plummet . . . . . . . . 15
Centering using a plumb bob . . . . . . . . . . . 16
Leveling. . . . . . . . . . . . . . . . . . . . . . . . . . 16
Sighting . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Setting Up the Prism Reflector. . . . . . . . . . . . . . . . 18
Adjusting the height of the tribrach adapter . . . . . 19
Changing the direction of the prism . . . . . . . . 19
Setting the prism constant . . . . . . . . . . . . 19
Setting the position of the target plate . . . . . . . 20
Total Station DTM-302 Series Instruction Manual xiii
Contents
Face-1/Face-2 Measurements . . . . . . . . . . . . . . . . 20
3 Getting Started . . . . . . . . . . . . . . . . . . . 23
Turning the Instrument On and Off . . . . . . . . . . . . . . 24
Turning on the instrument . . . . . . . . . . . . 24
Turning off the instrument . . . . . . . . . . . . 25
Selecting a Language . . . . . . . . . . . . . . . . . . . . 26
Changing Regional Configuration Pre-sets . . . . . . . . . . 27
Display and Key Functions . . . . . . . . . . . . . . . . . 29
Status bar . . . . . . . . . . . . . . . . . . . 32
Adjusting lighting and sound levels . . . . . . . . . 34
[DSP] key . . . . . . . . . . . . . . . . . . . 35
[MODE] key . . . . . . . . . . . . . . . . . . . 37
[COD] key . . . . . . . . . . . . . . . . . . . 38
[HOT] key . . . . . . . . . . . . . . . . . . . 39
Bubble indicator . . . . . . . . . . . . . . . . 41
[USR] keys . . . . . . . . . . . . . . . . . . . 42
[DAT] key . . . . . . . . . . . . . . . . . . . 43
List Display . . . . . . . . . . . . . . . . . . . . . . . . 44
Inputting Data . . . . . . . . . . . . . . . . . . . . . . . 45
Entering a point name or number . . . . . . . . . 45
Entering a code. . . . . . . . . . . . . . . . . 48
Advanced feature: Searching for a code
by using the first character . . . . . . . . 50
Entering values in feet and inches . . . . . . . . . 51
Jobs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Creating a new job . . . . . . . . . . . . . . . 52
Measuring Distances . . . . . . . . . . . . . . . . . . . . 54
Sighting a prism reflector. . . . . . . . . . . . . 54
Measuring distances . . . . . . . . . . . . . . . 55
Measurement settings . . . . . . . . . . . . . . 56
xiv Total Station DTM-302 Series Instruction Manual
Contents
4 Applications . . . . . . . . . . . . . . . . . . . . 59
HA Reset and Angle Operations . . . . . . . . . . . . . . . 60
Setting the horizontal angle to 0 . . . . . . . . . . 60
Entering the horizontal angle . . . . . . . . . . . 60
Recording a foresight point after
repeat angle measurement . . . . . . . . . 60
Face-1/Face-2 measurement . . . . . . . . . . . 61
Horizontal angle hold . . . . . . . . . . . . . . 62
Station Setup. . . . . . . . . . . . . . . . . . . . . . . . 62
Setting up a station with known
coordinates or azimuth . . . . . . . . . . . 63
Advanced feature: Measuring F1 and F2 . . . 65
Setting up a station using multiple point resection . . . 67
Advanced feature: Viewing and deleting a
measurement in resection . . . . . . . . . 70
Setting up the station quickly without coordinates . . . 71
Determining station elevation . . . . . . . . . . . 72
Checking and resetting the backsight direction . . . . 73
Two-point resection along a known line . . . . . . . 75
Stakeout . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Specifying the stakeout point by angle and distance . . 77
Specifying the stakeout point by coordinates . . . . . 80
Advanced feature: Specifying a stakeout list
by range input . . . . . . . . . . . . . . . 82
DivLine S-O . . . . . . . . . . . . . . . . . 83
RefLine S-O . . . . . . . . . . . . . . . . . 84
Program Key. . . . . . . . . . . . . . . . . . . . . . . . 86
Measuring distance and offset values
along a specified line . . . . . . . . . . . 86
Measuring distance and offset values
on the arc-curve . . . . . . . . . . . . . 88
Total Station DTM-302 Series Instruction Manual xv
Contents
Remote distance measurement. . . . . . . . . . . 91
Measuring remote elevation . . . . . . . . . . . 94
Measuring distance and offset values
on the vertical plane . . . . . . . . . . . . 95
Measuring distance and offset values on the slope . . . 97
Recording Measurement Data . . . . . . . . . . . . . . . . 99
Recording data from any observation screen . . . . . 99
Outputting data to the COM port . . . . . . . . .100
Measuring Offsets . . . . . . . . . . . . . . . . . . . . 101
Measuring taped offsets . . . . . . . . . . . . .101
Measuring angle offsets . . . . . . . . . . . . .102
Two-prism pole . . . . . . . . . . . . . . . .103
Extending a line by horizontal angle offset. . . . . .104
Entering a horizontal distance
after an angle-only shot . . . . . . . . . . .106
Calculating a corner point . . . . . . . . . . . .107
Measuring circle offsets . . . . . . . . . . . . .108
Extending the slope distance . . . . . . . . . . .110
5 Menu Key . . . . . . . . . . . . . . . . . . . . . 111
Introduction . . . . . . . . . . . . . . . . . . . . . . . 112
Job Manager . . . . . . . . . . . . . . . . . . . . . . . 112
Opening an existing job . . . . . . . . . . . . .112
Creating a new job . . . . . . . . . . . . . . .113
Deleting a job . . . . . . . . . . . . . . . . .114
Setting the control job . . . . . . . . . . . . . .115
Displaying job Information . . . . . . . . . . . .116
Cogo . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Calculating angle and distance
between two coordinates . . . . . . . . . .116
Calculating and manually inputting coordinates . . . .119
xvi Total Station DTM-302 Series Instruction Manual
Contents
Calculating area and perimeter. . . . . . . . . . .121
Advanced feature:
Entering a range of points . . . . . . . . .123
Calculating coordinates from line and offset . . . . .123
Calculating coordinates using intersection functions . .125
Advanced feature:
Entering angle and distance offsets . . . .130
Settings . . . . . . . . . . . . . . . . . . . . . . . . . 131
Angle . . . . . . . . . . . . . . . . . . . .131
Distance . . . . . . . . . . . . . . . . . . .132
Coordinate . . . . . . . . . . . . . . . . . .134
Power saving . . . . . . . . . . . . . . . . .134
Communications . . . . . . . . . . . . . . . .134
Stakeout . . . . . . . . . . . . . . . . . . .134
Unit . . . . . . . . . . . . . . . . . . . . .135
Recording . . . . . . . . . . . . . . . . . . .135
Others settings . . . . . . . . . . . . . . . . .136
Data. . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Viewing records . . . . . . . . . . . . . . . .137
Deleting records . . . . . . . . . . . . . . . .142
Editing records . . . . . . . . . . . . . . . . .144
Searching records . . . . . . . . . . . . . . .147
Entering coordinates. . . . . . . . . . . . . . .150
Point name list and code list . . . . . . . . . . .150
Communication . . . . . . . . . . . . . . . . . . . . . 155
Downloading data . . . . . . . . . . . . . . .156
Uploading coordinate data . . . . . . . . . . . .156
Advanced feature:
Editing the data order for upload . . . . .158
Uploading a point name list or code list . . . . . . .158
Total Station DTM-302 Series Instruction Manual xvii
Contents
1sec-Keys . . . . . . . . . . . . . . . . . . . . . . . . 159
[MSR] key settings . . . . . . . . . . . . . . . .159
[DSP] key settings . . . . . . . . . . . . . . . .160
[USR] key settings . . . . . . . . . . . . . . . .161
[S-O] key settings . . . . . . . . . . . . . . . .161
[DAT] key settings . . . . . . . . . . . . . . . .162
Calibration . . . . . . . . . . . . . . . . . . . . . . . 162
Time . . . . . . . . . . . . . . . . . . . . . . . . . . 162
6 Checking and Adjustment . . . . . . . . . . . . . 165
Checking and Adjusting the Plate Level . . . . . . . . . . 166
Checking and Adjusting the Circular Level . . . . . . . . . 166
Checking and Adjusting the Optical Plummet . . . . . . . . 167
Zero Point Errors of Vertical Scale and
Horizontal Angle Corrections . . . . . . . . . . . . 168
Checking . . . . . . . . . . . . . . . . . . .168
Adjusting . . . . . . . . . . . . . . . . . . .168
Checking the Instrument Constant . . . . . . . . . . . . . 170
7 Specifications. . . . . . . . . . . . . . . . . . . 173
Main Body . . . . . . . . . . . . . . . . . . . . . . . 174
Telescope . . . . . . . . . . . . . . . . . . .174
EDM. . . . . . . . . . . . . . . . . . . . .174
Dual-axis tilt sensor (DTM-332 single-axis) . . . . .174
Angle measurement . . . . . . . . . . . . . . .175
Precision . . . . . . . . . . . . . . . . . . .175
Measurement intervals . . . . . . . . . . . . .176
Clamps/tangent screws . . . . . . . . . . . . .176
Tribrach . . . . . . . . . . . . . . . . . . .176
Level vial sensitivity . . . . . . . . . . . . . .176
Optical plummet . . . . . . . . . . . . . . . .177
xviii Total Station DTM-302 Series Instruction Manual
Contents
Display and keypad . . . . . . . . . . . . . . .177
Connections in the base of instrument . . . . . . .177
Battery pack BC-65 . . . . . . . . . . . . . . .177
Environmental performance . . . . . . . . . . .178
Dimensions . . . . . . . . . . . . . . . . . .178
Weight . . . . . . . . . . . . . . . . . . . .178
Standard Components. . . . . . . . . . . . . . . . . . . 178
External Device Connector . . . . . . . . . . . . . . . . 179
8 System Diagrams . . . . . . . . . . . . . . . . . 181
System Components . . . . . . . . . . . . . . . . . . . 182
9 Communications . . . . . . . . . . . . . . . . . 185
Uploading Coordinate Data . . . . . . . . . . . . . . . . 186
Settings . . . . . . . . . . . . . . . . . . .186
Record format . . . . . . . . . . . . . . . . .186
Data example . . . . . . . . . . . . . . . . .187
Uploading Point Lists and Code Lists . . . . . . . . . . . 187
Settings . . . . . . . . . . . . . . . . . . .187
File format . . . . . . . . . . . . . . . . . .188
Data example . . . . . . . . . . . . . . . . .189
Downloading Data . . . . . . . . . . . . . . . . . . . . 190
Settings . . . . . . . . . . . . . . . . . . .190
Nikon raw record formats . . . . . . . . . . . .190
SDR2x and SDR33 record formats . . . . . . . . .193
Data examples . . . . . . . . . . . . . . . . .198
10 Error Messages . . . . . . . . . . . . . . . . . . 201
Angle . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Cogo . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Communications . . . . . . . . . . . . . . . . . . . . . 202
Data. . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Total Station DTM-302 Series Instruction Manual xix
Contents
Job Manager . . . . . . . . . . . . . . . . . . . . . . . 204
Programs . . . . . . . . . . . . . . . . . . . . . . . . 205
Recording Data . . . . . . . . . . . . . . . . . . . . . 205
Searching . . . . . . . . . . . . . . . . . . . . . . . . 207
Settings . . . . . . . . . . . . . . . . . . . . . . . . . 207
Stakeout . . . . . . . . . . . . . . . . . . . . . . . . . 207
Station Setup. . . . . . . . . . . . . . . . . . . . . . . 208
xx Total Station DTM-302 Series Instruction Manual
CHAPTER
1
Introduction 1
In this chapter:
Q Welcome
Q Parts of the Instrument
Q Maintenance
Total Station DTM-302 Series Instruction Manual 1
1 Introduction
Welcome 1.1
Thank you for purchasing this Nikon product.
This instruction manual was written for the users of Electronic Total Station
DTM-302 series instruments. Before you operate a DTM-302 series instrument,
read this manual carefully. In particular, pay attention to the warnings and cautions
that appear in the Safety section at the front of the manual. Before you begin, you
should also read the maintenance instructions. For more information, see
Maintenance, page 6.
Instrument accuracy and display 11.1
One of the benefits of the Nikon DTM-302, NPL-302, and DTM-502 series
products is ease-of-use. The software for these three product series has been
designed to make it easy for you to learn to operate one model of instrument and
apply that knowledge to the other models with little additional training. A
DTM-302 series user can easily operate the non-prism NPL-302 series instruments
or the higher accuracy DTM-502 series instruments.
There are some subtle differences in the software between these different product
families. Some of these differences stem from additional capabilities or features
available in some models. For example, the DTM-502 series offers the Lumi-Guide
functionality, which guides the rodman to the correct stake-out position quickly and
easily. The NPL-302 series offers reflectorless operation, allowing you to take
measurements to points inaccessible with a prism. This manual shows the unique
capabilities and features available in the DTM-302 series instrument.
Other differences stem from the accuracy specifications of the different product
families. Each instrument model is specified to different performance levels, and the
instrument’s display resolution then varies depending on the instrument’s accuracy.
2 Total Station DTM-302 Series Instruction Manual
Introduction 1
The following table describes the instrument accuracy and the corresponding angle
and distance resolution displayed on the instrument’s screen.
Model Angle
performance
accuracy
DTM-332 5'' 1'' 3
DTM-352 5'' 1'' 3
DTM-362 3'' 1'' 3
NPL-332 5'' 1'' 3
NPL-352 5'' 1'' 3
NPL-362 3'' 1'' 3
DTM-522 3'' 1'' 4
DTM-532 2'' 1'' 4
DTM-552 1'' 0.5'' 4
Displayed angle
resolution
Displayed distance
resolution (decimal
places)
The manuals for all of these total station product families show the measurement
screens with the higher resolution data for the highest accuracy DTM-552.
Total Station DTM-302 Series Instruction Manual 3
1 Introduction
Parts of the Instrument 1.2
Figure 1.1 and Figure 1.2 show the main parts of the DTM-302 series instrument.
Carrying
handle
Telescope
focusing ring
Telescope
eyepiece
Diopter ring
Plate level
Display
and face-1
keyboard
Battery mounting
button
Vertical tangent
screw
Vertical clamp
Upper plate clamp
Upper plate
tangent screw
Leveling base
clamp knob
Figure 1.1 Electronic Total Station DTM-302 series – Face-1
4 Total Station DTM-302 Series Instruction Manual
Optical sight
(finder)
Introduction 1
Objective
Display and
face-2 keyboard
Data output/
external power
input connector
(Input voltage
7.2 – 11 V DC)
Circular level
Figure 1.2 Electronic Total Station DTM-302 series – Face-2
Horizontal axis
indication mark
Optical plummet
Leveling base
Leveling screw
Total Station DTM-302 Series Instruction Manual 5
1 Introduction
Maintenance 1.3
Before using the instrument, read and follow the following maintenance
instructions:
• Do not leave the instrument in direct sunlight or in a closed vehicle for
prolonged periods. Overheating the instrument may reduce its efficiency.
• If the DTM-302 series instrument has been used in wet conditions, immediately
wipe off any moisture and dry the instrument completely before returning the
instrument to the carrying case. The instrument contains sensitive electronic
assemblies which have been well protected against dust and moisture. However,
if dust or moisture gets into the instrument, severe damage could result.
• Sudden changes in temperature may cloud the lenses and drastically reduce the
measurable distance, or cause an electrical system failure. If there has been a
sudden change in temperature, leave the instrument in a closed carrying case in a
warm location until the temperature of the instrument returns to room
temperature.
• Do not store the DTM-302 series instrument in hot or humid locations. In
particular, you must store the battery pack in a dry location at a temperature of
less than 30 °C (86 °F). High temperature or excessive humidity can cause mold
to grow on the lenses. It can also cause the electronic assemblies to deteriorate,
and so lead to instrument failure.
• Store the battery pack with the battery discharged.
• When storing the instrument in areas subject to extremely low temperatures,
leave the carrying case open.
• Do not overtighten any of the clamp screws.
• When adjusting the vertical tangent screws, upper plate tangent screws, or
leveling screws, stay as close as possible to the center of each screw’s range. The
center is indicated by a line on the screw. For final adjustment of tangent screws,
rotate the screw clockwise.
• If the leveling base will not be used for an extended period, lock down the
leveling base clamp knob and tighten its safety screw.
• Do not use organic solvents (such as ether or paint thinner) to clean the
non-metallic parts of the instrument (such as the keyboard) or the painted or
printed surfaces. Doing so could result in discoloration of the surface, or in
peeling of printed characters. Clean these parts only with a soft cloth or a tissue,
lightly moistened with water or a mild detergent.
6 Total Station DTM-302 Series Instruction Manual
Introduction 1
• To clean the optical lenses, lightly wipe them with a soft cloth or a lens tissue
that is moistened with alcohol.
• The reticle plate cover has been correctly
mounted. Do not release it or subject it to
excessive force to make it watertight.
• Before attaching the battery pack, check
that the contact surfaces on the battery
and instrument are clean. Press the
battery pack into place until the batterymounting button rises up to the battery
pack top surface. If the battery pack is not
Reticle plate cover
attached securely, the instrument is not
watertight.
• Press the cap that covers the data output/external power input connector terminal
until it clicks into place. The instrument is not watertight if the cap is not
attached securely, or when the data output/external power input connector is
used.
• The carrying case is designed to be watertight, but you should not leave it
exposed to rain for an extended period. If exposure to rain is unavoidable, make
sure that the carrying case is placed with the Nikon nameplate facing upward.
• The BC-65 battery pack contains a Ni-MH battery. When disposing of the
battery pack, follow the laws or rules of your municipal waste system.
• The instrument can be damaged by static electricity from the human body
discharged through the data output/external power input connector. Before
handling the instrument, touch any other conductive material once to remove
static electricity.
Total Station DTM-302 Series Instruction Manual 7
1 Introduction
8 Total Station DTM-302 Series Instruction Manual
CHAPTER
2
Preparation 2
In this chapter:
Q Unpacking and Packing the Instrument
Q Charging and Discharging the Battery Pack
Q Detaching and Re-Attaching the Battery Pack
Q Setting Up the Tripod
Q Centering
Q Leveling
Q Sighting
Q Setting Up the Prism Reflector
Q Face-1/Face-2 Measurements
Total Station DTM-302 Series Instruction Manual 9
2 Preparation
Unpacking and Packing the Instrument 2.1
Note – Handle the DTM-302 instrument gently to protect it from shocks and
excessive vibration.
Unpacking 21.1
To unpack the instrument, grip the carrying
handle and gently remove the instrument
from the carrying case.
Packing 21.2
Note – Store the instrument with the battery
pack attached.
To pack the instrument back into the carrying
case:
1. Set the telescope in the horizontal face-1 position.
2. Align the W storage mark on the bottom of
the face-1 keyboard with W the mark on the
leveling base clamp knob.
3. Lightly fasten the clamp knobs.
4. Place the instrument in the carrying case.
Note – When packing the charger (Q-75U/E) in
the plastic carrying case, make sure that you
store it as shown on the sticker inside the case.
Make sure that the battery charger cable is not
pinched when you close the case cover.
Charging and Discharging the Battery Pack 2.1
Before charging the battery pack, read the warnings (also listed in the Safety section
at the front of this manual) and the following notes.
Warning – Use only the specified battery charger (part number Q-75U/E) to
C
charge the battery pack (part number BC-65). Using other chargers, such as
a charger with part number Q-7U/E or Q7C, may cause the battery pack to
catch fire or rupture.
10 Total Station DTM-302 Series Instruction Manual
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