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

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

In this chapter:

QIntroduction

QLED Safety

QWarnings 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 injury.

Caution – Cautions alert you to situations that could cause injury or property damage.

Always read and follow the instructions carefully.

Warnings

Before using the instrument, read the following warnings and follow the instructions that they provide:

C C

Warning – Never look at the sun through the telescope. If you do, you may damage or lose your eyesight.

Warning – DTM-302 series instruments are not designed to be explosion-proof. Do not use the instrument in coal mines, in areas contaminated with coal dust, or near other flammable substances.

C Warning – Never disassemble, modify, or repair the instrument yourself. If you do, you may receive electric shocks or burns, or the instrument may catch fire. You may also impair the accuracy of the instrument.

C Warning – Use only the specified battery charger (part number Q-75U/E) to 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

Safety

C Warning – Do not cover the battery charger while the battery pack is being recharged. The charger must be able to dissipate heat adequately. Coverings such as blankets or clothing can cause the charger to overheat.

C Warning – Avoid recharging the battery pack in humid or dusty places, in 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.

C Warning – Although the battery pack (part number BC-65) has an auto-reset 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.

C C

Warning – Never burn or heat the battery. Doing so may cause the battery to leak or rupture. A leaking or ruptured battery can cause serious injury.

Warning – Before storing the battery pack or battery charger, cover the 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.

C Warning – The battery BC-65 is not waterproof on its own. Do not get the 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:

C Caution – Do not use controls or adjustments, or carry out any procedures, other than those specified in this document. Otherwise you may be exposed to hazardous radiation.

C C

Caution – The tops of the tripod ferrules are very sharp. When handling or carrying the tripod, take care to avoid injuring yourself on the ferrules.

Caution – Before carrying the tripod or the instrument in the carrying case, 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.

C Caution – Before setting up the tripod, make sure that no-one’s hands or feet are underneath it. When the legs of the tripod are being driven into the ground, they could pierce hands or feet.

C Caution – After mounting the instrument on the tripod, securely fasten the thumb screws on the tripod legs. If the thumb screws are not securely fastened, the tripod may collapse, causing personal injury or instrument damage.

C Caution – After mounting the instrument on the tripod, securely fasten the 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.

C Caution – Securely fasten the leveling base clamp knob. If the knob is not 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

Safety

C Caution – Do not stack objects on the plastic carrying case, or use it as a 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 other people.

Caution – Before charging the battery pack, read the instruction manual for the quick charger (part number Q-75U/E).

Total Station DTM-302 Series Instruction Manual xi

Safety

xii Total Station DTM-302 Series Instruction Manual

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

2Preparation. . . . . . . . . . . . . . . . . . . . . 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

3Getting 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

4Applications . . . . . . . . . . . . . . . . . . . . 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

5Menu 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

8System Diagrams . . . . . . . . . . . . . . . . . 181

System Components . . . . . . . . . . . . . . . . . . . 182

9Communications . . . . . . . . . . . . . . . . . 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

10Error 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

C H A P T E R

Introduction

In this chapter:

QWelcome

QParts of the Instrument

QMaintenance

Total Station DTM-302 Series Instruction Manual 1

1 Introduction

Welcome

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

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	Displayed angle	Displayed distance
	performance	resolution	resolution (decimal
	accuracy		places)
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

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

Nikon DTM-332, DTM-352, DTM-362 User Guide

1 Introduction

Parts of the Instrument

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

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Introduction 1

Optical sight (finder)

Objective

Display and face-2 keyboard

Data output/ external power input connector

(Input voltage 7.2 – 11 V DC)

Circular level

Horizontal axis indication mark

Optical plummet

Leveling base

Leveling screw

Figure 1.2 Electronic Total Station DTM-302 series – Face-2

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1 Introduction

Maintenance

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.

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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	Reticle plate cover


	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.

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1 Introduction

8 Total Station DTM-302 Series Instruction Manual

C H A P T E R

Preparation

In this chapter:

QUnpacking and Packing the Instrument

QCharging and Discharging the Battery Pack

QDetaching and Re-Attaching the Battery Pack

QSetting Up the Tripod

QCentering

QLeveling

QSighting

QSetting Up the Prism Reflector

QFace-1/Face-2 Measurements

Total Station DTM-302 Series Instruction Manual 9

2 Preparation

Unpacking and Packing the Instrument

Note – Handle the DTM-302 instrument gently to protect it from shocks and excessive vibration.

Unpacking

To unpack the instrument, grip the carrying handle and gently remove the instrument from the carrying case.

Packing

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

Before charging the battery pack, read the warnings (also listed in the Safety section at the front of this manual) and the following notes.

C Warning – Use only the specified battery charger (part number Q-75U/E) to 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.

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