Topcon GPT-8001A, GPT-8002A, GPT-8003A, GPT-8005A, GPT-8000A Series Instruction Manual

INSTRUCTION MANUAL

AUTOMATIC TRACKING PULSE TOTAL STATION



GPT-8000A

SERVO PULSE TOTAL STATION

SERIES

GPT-8001A
GPT-8002A
GPT-8003A

GPT-8005A

GPT-8000

SERIES

GPT-8001
GPT-8002
GPT-8003
GPT-8005

.

AUTO TRACKING  TOTAL STATION



GPT-8000A series

SERVO TOTAL STATION

GPT-8000 series

TOPCON POSITIONING SYSTEMS, INC.

5758 West Las Positas Blvd., Pleasanton, CA 94588, U.S.A.
Phone: [phone] Fax: [phone] www.topcon.com

TOPCON CALIFORNIA

3380 Industrial Blvd, Suite 105, West Sacramento, CA 95691,
Phone: [phone] Fax: [phone]

TOPCON MIDWEST

891 Busse Road, Elk Grove Village, IL 60007, U.S.A.
Phone: [phone] Fax: [phone]

TOPCON EUROPE B.V .

Essebaan 11, 2908 LJ Capelle a/d IJssel, The Netherlands.
Phone: [phone] Fax: [phone] www.topconeurope.com

TOPCON BELGIUM

Preenakker 8, 1785 Merchtem, Belgium
Phone: [phone] Fax: [phone]

TOPCON DEUTSCHLAND G.m.b.H.

Weidkamp 180, 45356 Essen, GERMANY
Phone: [phone] Fax: [phone] [e-mail]
www.topcon.de

TOPCON S.A.R.L. 

89, Rue de Paris, 92585 Clichy, Cedex, France.
Phone: [phone] Fax: [phone] [e-mail]

U.S.A.

TOPCON ESPAÑA S.A.

HEAD OFFICE

Frederic Mompou 5, ED. Euro 3, 08960, Sant Just Desvern Barcelona, Spain.
Phone: [phone] Fax: [phone] www.topconesp.com

MADRID OFFICE

Avenida Burgos, 16E, 1 28036, Madrid, Spain.
Phone: [phone] Fax: [phone]

TOPCON SCANDINAVIA A. B. 

Neongatan 2 S-43151 Mölndal, SWEDEN
Phone: [phone] Fax: [phone]

TOPCON CORPORA TION

75-1 Hasunuma-cho, Itabashi-ku, Tokyo 174-8580, Japan
Phone: [phone] Fax: [phone] www.topcon.co.jp

TOPCON (GREA T

HEAD OFFICE

Topcon House Kennet Side, Bone Lane, Newbury, Berkshire RG14 5PX U.K.
Phone: [phone] Fax: [phone]
[e-mail] [e-mail]

TOPCON SOUTH ASIA PTE. LTD.

Blk 192 Pandan Loop, Pantech Industrial Complex, #07-01, Singapore 128381
Phone: [phone] Fax: [phone] www.topcon.com.sg

TOPCON AUSTRALIA PTY . L TD .

408 Victoria Road, Gladesville, NSW 2111, Australia
Phone: [phone] Fax: [phone] www.topcon.com.au

TOPCON INSTRUMENTS (THAILAND) CO., LTD.

77/162 Sinn Sathorn T ower, 37th Fl.,
Krungdhonburi Rd., Klongtonsai, Klongsarn, Bangkok 10600 Thailand.
Phone: [phone]~7 Fax: [phone]

TOPCON INSTRUMENTS (MALA YSIA) SDN. BHD .

Lot 226 Jalan Negara 2, Pusat Bandar Taman Melawati,
Taman Melawati, 53100, Kuala Lumpur, Malaysia.
Phone: [phone] Fax: [phone]

TOPCON KOREA CORPORA TION

2F Yooseoung Bldg., 1595-3, Seocho-Dong, Seocho-gu, Seoul, 137-876, Korea
Phone: 82-2-2055-0321 Fax: 82-2-2055-0319 www.topcon.co.kr

TOPCON OPTICAL (H.K.) LIMITED

2/F., Meeco Industrial Bldg., No. 53-55 A u Pui W an Street, Fo Tan Road,
Shatin, N.T ., Hong Kong
Phone: [phone] Fax: [phone] www.topcon.com.hk

TOPCON CORPORATION BEIJING OFFICE

Room No. 962 Poly Plaza Building, 14 Dongzhimen Nandajie,
Dongcheng District, Beijing, 100027, China
Phone: [phone]~2 Fax: [phone]

TOPCON CORPORATION BEIRUT OFFICE

P. O. BOX 70-1002 Antelias, BEIRUT-LEBANON.
Phone: [phone]-523526 Fax: [phone]

TOPCON CORPORATION DUBAI OFFICE

P.O.Box 28595, 102, Al Naily Bldg., 245 Abu Hail Road, Deira,Dubai,UAE
Phone: [phone] Fax: [phone]

BRIT AIN) LTD.

64538 90020 GPT- 8000/8000A Series A 0207 (2B)

FOREWORD

1

FOREWORD

Thank you for purchasing the TOPCON Auto Tracking Pulse Total Station / Servo Pulse Total
Station, GPT-8000A/8000 series. For the best performance of the instruments, please carefully
read these instructions and keep them in a conve-nient location for future reference.

General Ha nd ling P rec aut i on s

Before starting work or operation, be sure to check that the instrument is functioning
correctly with normal performance.

Do not submerge the instrument into water.

The instrument can not be submerged underwater.
The instrument is designed based on the International Standard IP54, therefore it is protected from
the normal rainfall.

Setting the instrument on a tripod

When mounting the instrument on a tripod, use a wooden tripod when possible. The vibrations that
may occur when using a metallic tripod can effect the measuring precision.

Installing the tribrach

If the tribrach is installed incorrectly, the measuring precision could be effected. Occasionally check
the adjusting screws on the tribrach. Make sure the base fixing lever is locked and the base fixing
screws are tightened.

Guarding the instrument against shocks

When transporting the instrument, provide some protection to minimize risk of shocks. Heavy
shocks may cause the measurement to be faulty.

Carrying the instrument

Always carry the instrument by its handgrip.

Exposing the instrument to extreme heat.

Do not leave the instrument in extreme heat for longer than necessary. It could adversely affect its
performance.

Sudden changes of temperature

Any sudden change of temperature to the instrument or prism may result in a reduction of
measuring distance range, i.e when taking the instrument out from a heated vehicle. Let instrument
acclimate itself to ambient temperature.

Battery level check

Confirm battery level remaining before operating.

Memory back up

The instrument has a built in battery for memory back up. If the battery power is low, “Back up
battery empty” will display. Contact your dealer, to replace the battery.

Taking the battery out

It is recommended not to take the battery out during the power is on. All the data stored is possible
gone at that time. So please do your assembling or taking the battery out after the power is off.

No responsibility

TOPCON Corporation has no responsibility for loss of data stored in the memory in case
unexpected accidents.

FOREWORD

2

Rotating the instrument and telescope

Rotation of the instrument or telescope is driven electronically in normal operation.
Do not disturb the rotation.

Storage in the case

Keep the telescope horizontally and turn the instrument to align its mark with the lower base mark
(Storage mark). Keep its objective lens side downward. Storing it in the case in any other way may
cause damage. Hold the hand grips and base with both hands, when taking the instrument out of the
case, or putting the equipment in the case.


Maintenance for driving parts.

Every 4,000~5,000 hours operation in total, change grease of driving parts.
Contact your dealer or TOPCON Head Office for the maintenance.

FOREWORD

3

Display for Safe Use

In order to encourage the safe use of products and prevent any danger to the operator and
others or damage to properties, important warnings are put on the products and inserted in
the instruction manuals.
We suggest that everyone understand the meaning of the following displays and icons before
reading the “Safety Cautions” and text.



Display Meaning

WARNING

WARNING

CAUTION

CAUTION

• Injury refers to hurt, burn, electric shock, etc.

• Physical damage refers to extensive damage to buildings or equipment and furniture.

Safety Cautions

•There is a risk of fire, electric shock or physical harm if you attempt to disassemble or
r epair the instrument yourself.

This is only to be carried out by TOPCON or an authorized dealer, only!



•Cause eye injury or blindness.

Do not look at the sun through a telescope.



•Laser beams can be dangerous, and can cause eye injury's if used incorrectly.

Never attempt to repair the instrument yourself. (GPT-8000A series and laser plummet model)



•Cause eye injury or blindness.

Do not stare into beam.
(GPT-8000A series and laser plummet model)



•High temperature may cause fire.

Do not cover the charger while it is charging.



•High temperature may cause fire.

Do not connect the battery to an instrument while it is charging.



•Risk of fire or electric shock.

Do not use damaged power cable, plug and socket.



•Risk of fire or electric shock.

Do not use a wet battery or charger.



•May ignite explosively.

Never use an instrument near flammable gas, liquid matter, and do not use in a coal mine.



•Battery can cause explosion or injury.

Do not dispose in fire or heat.



•Risk of fire or electric shock.

Do not use any power voltage except the one given on manufacturers instructions.



•Battery can cause outbreak of fire.

Do not use any other type of charger other than the one specified.



•Risk of fire.

Do not use any other power cable other than the one specified.



•Battery can cause outbreak of fire.

Do not block up the vent of the battery.



•The short circuit of a battery can cause a fire.

Do not short circuit battery when storing it.

Ignoring or disregard of this display may lead to the danger of death or
serious injury.

Ignoring or disregard of this display may lead to personal injury or phys

-ical damage.



WARNING

WARNING

FOREWORD

4

User

1) This product is for professional use only!
The user is required to be a qualified surveyor or have a good knowledge of surveying, in
order to understand the user and safety instructions, before operating, inspecting or adjusting.

2) Wear the required protectors (safety shoes, helmet, etc.) when operating.
Exceptions from Responsibility

Exceptions from Responsibility

1) The user of this product is expected to follow all operating instructions and make periodic
checks of the product’s performance.

2) The manufacturer, or its representatives, assumes no responsibility for results of a faulty or
intentional usage or misuse including any direct, indirect, consequential damage, and loss
of profits.

3) The manufacturer, or its representatives, assumes no responsibility for consequential
damage, and loss of profits by any disaster, (an earthquake, storms, floods etc.).
A fire, accident, or an act of a third party and/or a usage any other usual conditions.

4) The manufacturer, or its representatives, assumes no responsibility for any damage, and
loss of profits due to a change of data, loss of data, an interruption of business etc., caused
by using the product or an unusable product.

5) The manufacturer, or its representatives, assumes no responsibility for any damage, and loss
of profits caused by usage except for explained in the user manual.

6) The manufacturer, or its representatives, assumes no responsibility for damage caused by
wrong movement, or action due to connecting with other products.

CAUTION

CAUTION

Use of controls or adjustment or performance of procedures other than those specified herein
may result in hazardous radiation exposure.(GPT-8000A series and laser plummet model)

Let the laser beam reach the aimed object or the target without anybody else in the laser beam
path. In case you operate laser beam open, avoid radiating laser beam to the height of man's
head. It is quite possible for the beam to enter into one's eyes, and it is possible to lose visual
sight temporarily, and lose one's caution and awareness of other dangers - avoid glaring beam.

(GPT-8000A series and laser plummet model)

Do not connect or disconnect equipment with wet hands, you are at risk of electric shocks if you
do!

Risk of injury by overturn the carrying case.
Do not stand or sit on the carrying cases.

Please note that the tips of tripod can be hazardous, be aware of this when setting up or
carrying the tripod.

Risk of injury by falling down the instrument or case.
Do not use a carrying case with a damaged which belts, grips or latches.

Do not allow skin or clothing to come into contact with acid from the batteries, if this does occur
then wash off with copious amounts of water and seek medical advice.

A plumb bob can cause an injury to a person if used incorrectly.
It could be dangerous if the instrument falls over, please ensure you attach a handle battery to

the instrument securely.
Ensure that you mount the Tribrach correctly, failing to do so may result in injury if the tribrach

were to fall over.
It could be dangerous if the instrument falls over, please check that you fix the instrument to the

tripod correctly.
Risk of injury by falling down a tripod and an instrument.

Always check that the screws of tripod are tightened.

FOREWORD

5

Laser Safety

•

Distance measurement

GPT-8000A/8000 series uses the invisible laser beam to measure the distance. The GPT-8000A/8000
series are manufactured and sold in accordance with "Performance Standards for Light-Emitting
Products" (FDA/BRH 21 CFR 1040) or "Radiation Safety of Laser Products, Equipment Classification,
Requirements and User`s Guide" (IEC Publication 60825-1) provided on the safety standard for laser
beam.
As per the said standard, the GPT-8000 series is classified as "Class 1 (l) Laser Products".
In case of any failure, do not disassemble the instrument. Contact TOPCON or your
TOPCON dealer.

•

GPT-8000A series

GPT-8000Aseries uses the visible laser beam for auto tracking and optical communication. The
GPT-8000Aseries products are manufactured and sold in accordance with “Radiation Safety of Laser
Products, Equipment Classification, Requirements and User‘s Guide” (IEC Publication 60825-1) or
“Performance Standards for Light-Emitting Products” (FDA/BRH 21 CFR 1040) provided on the safety
standards for laser beam.
As per the said standards, GPT-8000Aseries is classified as “Class 2 (CLASS II) Laser Products”.
The laser beam belongs not very dangerous type but we request you to keep and understand “Safety
standard for users” as mentioned in the manual instruction.
In case of any failure, do not disassemble the instrument. Contact TOPCON or your
TOPCON dealer.

Labels

Find the labels which describes the caution and safety about the laser beam as follows in GPT-8000A
series. We request you to replace it one anytime the caution labels are damaged or lost and paste a
new one at the same place. You can get the labels from Topcon or
your dealer.

Beam aperture

ent

Beam aperture

GPT-8000A series

Symbol marks while the laser is emitting.

The following symbol marks of instrument status will indicate that the laser is emitting.

Marks Status of instrum

V : 87°55'45"
HR: 180°44'12"

SD HD NEZ 0SET HOLD P1↓

The symbol mark

Warning Label

Explanatory Label

CAUTION

LASER RADIA TION

DO NOT STARE INTO BEAM

Maximum output 1mW Wave length 690nm CW

CLASS 2 LASER PRODUCT

Each label is differed by the market.

Auto-collimating

Auto-tracking

Waiting

Searching

FOREWORD

6

•

Laser Plummet Model

GPT-8000A/8000 series Laser plummet model use a visible laser beam to perform the plumb laser
function. The GPT-8000A/8000 series Laser plummet type products are manufactured and sold in
accordance with "Radiation Safety of Laser Products, Equipment Classification, Requirements and
User`s Guide" (IEC Publication 60825-1) or "Performance Standards for Light-Emitting Products"
(FDA/BRH 21 CFR 1040) regarding the safety standard for laser products.
As per these standards, the GPT-8000A/8000 series Laser plummet type is classified as "Class II (2)
Laser Products".
Since Laser radiation is emitted from the GPT-8000A/8000 series Laser plummet type instruments,
please refer to the "Laser Safety" bulletin which accompanies the instrument in the United States as
well as the "Safety Standard for Users" that is mentioned in the instruction manual.
In the case of any technical failure, do not disassemble the instrument. Contact either TOPCON or
your authorized TOPCON dealer.

Labels

The following labels are found on the instruments which describe the GPT-8000A/8000 series
Laser plummet type: Precautions and safety information about the laser beam.
If, at any time, any of these labels are damaged and become illegible, please replace these
important labels. Please the new labels in exactly the same position as the original labels.
Replacement labels can be obtained from Topcon or your authorized Topcon dealer.

Depending on the country where the instrumetn is sold, either of these labels may be
found on the GPT-8000A/8000 series laser plummet type.

Symbol mark while the laser is emitting.

The following symbol mark willappear at the right side of the second line.

The symbol mark will blink while the laser
plummet is working.

Warning Label

GPT-8000A/8000 series
Laser Plummet type

P1

Ap

erture Label

AVOID EXPOSURE

LASER LIGHT IS EMITTED

FROM THIS APERTURE

Beam aperture

V : 87°55'45"5
HR: 180°44'12"5

SD HD NEZ 0SET HOLD

P1

↓

Explanatory Label

CAUTION

LASER RADIA TION-DO NOT

STARE INTO BEAM

WAVE LENGTH 633n m

1mW MAXIMUM OUTPUT

CLASS II LASER PRODUCT

LASER RADIATION

DO NOT STARE INTO BEAM

Maximum output 1mW Wave length 633nm

CLASS 2

LASER PRODUCT

FOREWORD

7

Contents

FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

General Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Display for Safe Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Safety Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

User . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Exceptions from Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Laser Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Standard Set Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1 NOMENCLATURE AND FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.3 Operating Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.4 Function Key (Soft Key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1.5 Star key mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.6 Auto Power Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1.7 Data Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1.8 Rotating Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1.8.1 Rotating by H/V Shuttle and H/V Jog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1.8.2 Auto Inversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1.8.3 Rotating automatically to a required Horizontal and Vertical angle . . . . . . . . . 1-13

1.9 Using together with RC-2II Remote Control System

(GPT-8000Aseries) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1.10 Using connecting with Personal Computer (PC) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

2 PREPARATION FOR MEASUREMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1 Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 Setting Instrument Up For Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.3 Power Switch Key ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.4 Battery Level Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.5 Main Menu Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2.6 Vertical and Horizontal Angle Tilt Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.7 Compensation of Systematic Error of Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.8 Resume Mode ON/OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.9 How to Enter Numerals and Alphabet Letters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.10 Memory Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.11 Inclination of Prism and Measuring Error (GPT-8000A series) . . . . . . . . . . . . . . . . . 2-10

3 AUTOMATIC TRACKING / AUTOMATIC COLLIMATION

(GPT-8000A series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1 Automatic Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Automatic Collimation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.3 Range of Laser for Auto-tracking and Auto-collimating . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.4 Setting Parameters for Auto-Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.4.1 Setting Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.4.2 How to set the parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

4 STANDARD MEASUREMENT MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 Angle Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1.1 Measuring Horizontal Angle Right and Vertical Angle . . . . . . . . . . . . . . . . . . . 4-1

4.1.2 Switching Horizontal Angle Right/Left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.1.3 Measuring from the Required Horizontal Angle . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.1.4 Vertical Angle Percent Grade(%) Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.1.5 Automatic Rotation to a Required Horizontal and Vertical Absolute Angle . . . . 4-4

4.2 Distance Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.2.1 Setting of the Atmospheric Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.2.2 Setting of the Correction for Prism Constant / Non-prism Constant . . . . . . . . . 4-5

4.2.3 Distance Measurement (Continuous Measurement) . . . . . . . . . . . . . . . . . . . . 4-6

4.2.4 Distance Measurement (Single/N-times Measurement) . . . . . . . . . . . . . . . . . 4-7

4.2.5 Fine / Coarse Measuring Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

4.2.6 Stake Out (S-O) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

4.3 COORDINATE MEASUREMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

FOREWORD

8

4.3.1 Setting Coordinate Values of Occupied Point . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

4.3.2 Setting of the Instrument Height / Prism Height . . . . . . . . . . . . . . . . . . . . . . . 4-13

4.3.3 Execution of Coordinate Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

4.4 DATA OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

5 PROGRAM MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1 Setting a Direction Angle for Backsight Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.2 Retaining a Coordinate (STORE- NEZ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.3 Remote Elevation measurement (REM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.4 Missing Line Measurement (MLM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

5.5 Line Measurement (LINE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

5.6 Offset measurement (OFFSET) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

5.6.1 Angle Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

5.6.2 Distance Offset Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

5.6.3 Plane Offset Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

5.6.4 Column Offset Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

5.7 External Link (GPT-8000Aseries) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

5.7.1 Starting compatible communication program of AP-L1A . . . . . . . . . . . . . . . . 5-23

5.7.2 Setting for the communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

5.7.3 Carrying out Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

6 MEMORY MANAGE MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.1 View Internal Memory and Card Memory Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2 Protect a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.3 Rename a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.4 Deleting a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.5 Copy a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.6 Initializing Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

7 COMMUNICATION MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1 Setting of PROTOCOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2 Data File In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.3 Data File Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

8 PARAMETERS SETTING MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1 Parameter Setting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1.1 Parameters for Measurement and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1.2 Parameters for communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8.2 Setting Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8.2.1 Parameters for Measurement and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8.2.2 Parameters for Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

8.2.3 Password Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

9 CHECK AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1 Checking and Adjusting of Instrument Constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1.1 Checking of the accuracy of the non-prism mode . . . . . . . . . . . . . . . . . . . . . . 9-1

9.2 Checking the Optical Axis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

9.3 Checking/Adjusting the Theodolite Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

9.3.1 Checking /Adjusting the Plate Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

9.3.2 Checking /Adjusting the Circular Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

9.3.3 Adjustment of the Vertical Cross-hair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

9.3.4 Collimation of the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

9.3.5 Checking / Adjusting the Optical Plummet Telescope . . . . . . . . . . . . . . . . . . . 9-8

9.3.6 Checking / Adjusting the Laser Plummet (For Laser Plummet type) . . . . . . . . 9-9

9.4 Adjustment of Compensation Systematic Error of Instrument . . . . . . . . . . . . . . . . . . 9-10

9.5 Showing Constant List and Switch ON/OFF

Compensation Systematic Error of Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12

9.6 How to adjust the date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13

9.7 How to Set the Instrument Constant Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14

9.8 Inspection and Adjustment of Optic Axis for Auto -Tracking

(GPT-8000ASeries) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15

10 SETTING THE PRISM / NON-PRISM CONSTANT VALUE . . . . . . . . . . . 10-1

11 SETTING ATMOSPHERIC CORRECTION . . . . . . . . . . . . . . . . . . . . . . . 11-1

11.1 Calculation of Atmospheric Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

11.2 Setting of Atmospheric Correction Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

FOREWORD

9

12 CORRECTION FOR REFRACTION AND EARTH CURVATURE . . . . . . . 12-1

12.1 Distance Calculation Formula. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

13 POWER SOURCE AND CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

13.1 Rechargeable Battery BT-56Q . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1

14 DETACH/ATTACH OF TRIBRACH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1

15 BATTERY SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1

16 PRISM SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-1

17 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-1

18 ERROR DISPLAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-1

19 SPECIAL ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-1

20 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1

APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . APPENDIX-1

Dual Axis Compensation ............................................................................................ APPENDIX-1

Precaution when Charging or Storing Batteries.......................................................... APPENDIX-3

Standard Set Composition

1) GPT-8000A/8000 series (with lens cap) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 each

2) Battery BT-56Q . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 each

3) Battery charger BC-27BR or BC-27CR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 each

4) Tool kit with case [ rod pins, screwdriver, cleaning brush ] . . . . . . . . . . . . . . . . . . . 1 set

5) Plastic carrying case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 each

6) Silicon cloth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 each

7) Plastic rain cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 each

8) Instruction manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 each

(Make sure that all of the above items are with the instrument when purchased.)

Remarks:

1) Battery charger BC-27CR is for AC 230V use and BC-27BR is for AC 120V use.

2) Plumb bob set and plumb bob hook are supplied for certain markets.Remarks:

1 NOMENCLATURE AND FUNCTIONS

1-1

1 NOMENCLATURE AND FUNCTIONS

1.1 Nomenclature

Laser aperture
(for optical
communication)
(GPT-8000A series)

Objective lens
Laser aperture
(for auto-tracking)
(GPT-8000A series)

Tracking indicator
(GPT-8000A series)
Point guide
(GPT-8000 series)

Handle

Sighting collimator

Handle fi xing knob

Instrument height
mark

Instrument center
mark

Card cover lever

.

Optical plummet
telescope

Display window

Operation keys

The caution l abels are past ed up GPT-8000A series and Laser plummet mo del which describe
the warning of laser beam.
Refer to " Lase r Safety" and "Laser plum me t model" about l abe l posi ti o ns and their shapes

Base fixing screw

Battery BT-56Q

Power suppl y
connector

Serial Signal
Connector-1(6pin)

Leveling screw

Base (Model 5)

1 NOMENCLATURE AND FUNCTIONS

1-2

Telescope
focusing knob

Battery fixing knob

Instrument height
mark

Telesco pe gri p

Telescope eyepi ece

Plate level

Centronics
connector

Circular level

Instrument center
mark

Vertical shuttle

Vertical jog

Power switc

Horizontal shuttle

h

Horizontal jog

Adjusting screws for
circul ar level

Tribrach fixing lever

1 NOMENCLATURE AND FUNCTIONS

1-3

1.2 Display

• Display

In general upper four lines display the measuring data, and the bottom line displays the soft key
function which is changed by the measuring mode.

• Contrast

The contrast and illumination of display window are adjusted by star ( ) key.

• Heater (Automatic)

The built-in heater keeps the display functional when the temperature goes below 0°C (32 °F). To
switch the heater ON or OFF, refer to Chapter 8 "PARAMETERS SETTING MODE". When the
heater is ON and the temperature goes below 0°C (32 °F), the heater automatically
adjust the temperature to the display to keep it operating.

• Example

Angle measurement mode
V-angle: 87º55’45”
H-angle: 180º44’12”

Distance measurement mode
Horizontal-angle: 87º55’45”
Horizontal distance: 180º44’12”
Relative elevation: 12.345m

V : 87°55'45"
HR: 180°44'12"

SD HD NEZ 0SET HOLD P1

Display Contents Display Content

VV-angle(m)Meter unit

V% Percent grade ( f) Feet unit

HR H-angle right F Fine mode

HL H-angle left C Coarse mode (1m m)
HD Horizontal distance c Coarse mode (10mm)
VD Relative elevation R Repeat measurement
SD Slope distance S Single measurement

NN coordinate N N-times measurement

↓

V : 87°55'40"
HR: 180 °44'12" PSM 0.0
SD: 12.345 PPM 0.0
(m) *F.R
MEAS MODE VH HD NEZ

↓

EE coordinate ppm Atmosphe ric correction value
ZZ coordinate PSM Prism constant value

*EDM workingNPM Non-Prism constant value

NP Non-prism mode

Battery Level Indicator
Refer to Section 2.4 “Battery Lev e l
Indicator” for further information.

Laser plum me t is work ing.
(Only for lase r pl ummet model)

Rotation Indicator
Refer to Section 1.8 “Rotating
Method” for further information.

1 NOMENCLATURE AND FUNCTIONS

1-4

• The symbol marks for Auto-tracking and Auto-collimating (GPT-8000A series)

1.3 Operating Key

Auto-collimating
(

Laser is emitting

GPT-8000A s eries is in auto­collimating status.

Waiting (Laser is emitting)
GPT-8000A series is in waiting
status.

Failure in auto-collimating.
(

Laser is off

GPT-8000A series could not find
the target prism during auto­collimating.

)

Auto-tracking

)

(

Laser is emitting

GPT-8000A series is in au to­tracking status.

Searching (Laser is emitting)
GPT-8000A series is searc hing
a prism.

)

KEY NAME FUNCTION

F1~F6 Soft key Functions are ac cording to the displayed message.
0~9 . - Numeric key Numeric Character Entry for Preset Data
A ~/ Alp ha key Alpha Characte r Entry
ESC Escape key Escape to Previous Display or Menu

Star key Optional instrument functions

ENTEnter key End operat i on of data input and accept s data

POWER Power key

ON/OFF of power sou rce.
(Power key is locate d on the side of the instrument.

1 NOMENCLATURE AND FUNCTIONS

1-5

1.4 Function Key (Soft Key)

The Soft Key Functions are labeled on teh bottom of display. Soft Key functions are different for
each measurement).

V : 87°55'45"5
HR: 180°44'12"5

SD HD NEZ 0SET HOLD

P1

↓

[F1] [F2] [F3] [F4]

V : 87°55'45"5
HR: 180°44'12"5

SD HD NEZ 0SET HOLD P1

TURN HSET R/L V/% TILT P2

Angle measuring

V : 90 10'20"5
HR: 120 30'40"5 PSM 0.0
HD: PPM 0.0
VD: (m) F.R
MEAS MODE VH SD NEZ P1

REC SO MEAN P2

Horizontal distance measuring

Page D isplay

Angle

measuring

NEZ F3 Coordinate distanc

0SET F4 Set horizontal angle to 0¡00’00".
HOLD F5 Horizontal angle hold.
TURN F1 Turns the instrument to required angle automatically.
HSET F2 Preset a horizonta l angle .

V/% F4 Changes the display to vertical angle or percent of grade.
TILT F5

Soft

key

SD F1 Slope dista nce measuring mode.
HD F2 Horizontal distance measuring mode.

R/L F3 Changes horizontal angle right or left.

Sets the tilt function, ON/OFF.
If ON, the display shows tilt correction value.

Soft keys

↓

↓

P1

↓

↓

e measuring mode.

[F5]

[F6]

V : 90°10'20"5
HR: 120°30'40"5 PSM 0.0
SD: PPM 0.0
(m) F.R
MEAS MODE VH HD NEZ

TURN SO MEAN m/ft P2

Slope distance measuring

N : 12345.6789
E : -12345.6789 PSM 0.0
Z : 10.1234 PPM 0.0
(m) F.R
MEAS MODE VH SD HD P1

↓

TURN HT MEAN P2

Coordinate measuring

Function

↓

↓

↓

1 NOMENCLATURE AND FUNCTIONS

1-6

Page Display

Slope

distance

measuring

Horizontal

distance

measuring

Coordinate

measuring

Soft

key

MEAS F1

MODE F2 Changes Fine / Coarse(1mm) /Coarse(10mm) mode.

VH F3 Angle measurement mode.

HD F4

NEZ F5

TURN F1 Turns the instrument to required angle automatically.

SO F2 Stake out measurem ent mode .

MEAN F3 Sets the number of N-time measur ement.

m/ft F4 Changes distance measurement unit to meter or feet.

MEAS F1

MODE F2 Changes Fine / Coarse(1mm) /Coarse(10mm) mode.

VH F3 Angle measurement mode.
SD F4

NEZ F5

TURN F1 Turns the instrument to required angle automatically.

SO F2 Stake out measurem ent mode .

MEAN F3 Sets the number of N-time measur ement.

m/ft F4 Switches meter or feet unit.

MEAS F1

MODE F2 Changes Fine / Coarse(1mm) /Coarse(10mm) mode.

VH F3 Angle measurement mode.
SD F4

HD F5

TURN F1 Turns the instrument to required angle automatically.

HT F2 Input Instrument / prism height values.

MEAN F3 Sets the number of N-t i me meas u rement.

m/ft F4 Switches meter or feet unit.

SET F5 Pre-set instrument coordi nate v alues

Starts slope distan ce measurement mode.
Changes Continuous/ N-times (single) measurement mode.

Horizontal distance measurement mode. Displays the horizontal distance
data after N-times or single measurement.

Coordinate measurement mode.
Displays the coordinate after N-times or single measurement.

Starts horizont al d ist ance measurement mode .
Changes continuous/ N-times (single) measurement mode.

Slope distance measuring mode.
Display the slope distance after N-time

Coordinate measurement mode.
Displays the coordinate after N-times or single measurement.

.

Starts coordinate measurement mode.
Changes continuous/ N-times (single) measurement mode.

Slope distance measuring mode.
Display the slope distance after N-t imes or single measurement.

Horizontal distance measurement mode. Displays the horizontal distance
data after N-times or single measurement.

Function

s or single measurement.

1.5 Star Key Mode

Press the ( ) key to view the instrument options. Since there are three screens (GPT-8000Aseries)
or two screens (GPT-8000 series) of options, press [F6](1 ) soft key to view the next screen.
The following instrument options can be selected from the ( ):

GPT-8000A Series

• Screen One

1) View Date & Time

2) Auto-tracking [F1]

3) Auto-collimating [F2]

4) Set the parameters for Auto-tracking. [F3]

5) Auto- inversion [F4]

6) Non-prism mode / Prism mode selection [F5]

• Screen Two

7) Adjustment the contrast of the display [F1 & F2]

8) Turn the back light of the display ON/OFF [F3]

9) Reticle illumination---Off / Low / Medium / High [F4]

10) View free memory for internal and card memory [F5]

• Screen Three

11) The light acceptance quantity level (signal level) is displayed.[F1]

12) Set the Temperature, Pressure, Atmospheric Correction Value (PPM), and Prism
Constant Value (PSM) [F2]

13) Turn the Tracking Indicator option ON/OFF [F3]

14) Electric circular graphic display [F5]

15) Turn the Laser plummet option ON/OFF [F5] (only for Laser plummet model)

1 NOMENCLATURE AND FUNCTIONS

1-7

2002-07-07 14:30:40

1

↓

2002-07-07 14:30:40

2

↓

Back Light of Display

Auto- inversion

Date & Time

Set para meter for Au to-tr ack ing

Auto-collimating

Auto-tracking

2002-07-07 14:30:40

3

↓

Contrast adjustment

T

racking in dicator

Set the Temperature, Pressure, Atmospheric Correction
Value (PPM), and Prism Constant Value (PSM)

Displaying
Signal Level

Screen 1

Screen 2

Screen 3

View free memory for Card/Internal Memory

Reticle illumination

Laser Plummet
(Only for Laser Plummet type)

Electric circular graphic display

NP/P

Non-prism/ Prism
mode

1 NOMENCLATURE AND FUNCTIONS

1-8

GPT-8000A Series

• Screen One

1) View Date & Time

2) Electric circular graphic display [F1]

3) The light acceptance quantity level (signal level) is displayed [F2]

4) Set the Temperature, Pressure, Atmospheric Correction Value (PPM), and Prism
Constant Value (PSM)[F3]

5) Auto- inversion [F4]

6) Non-prism mode / Prism mode selection [F5]

• Screen Two

7) Adjustment the contrast of the display [F1 & F2]

8) Turn the back light of the display ON/OFF [F3]

9) Reticle illumination---Off / Low / Medium / High [F4]

10) View free memory for internal and card memory [F5]

• Screen Three

11)Turn the Point Guide option ON/OFF.[F1]

12) Turn the Laser plummet option ON/OFF [F1] (only for Laser plummet model)

Electric circular graphic display

Displaying Signal Level

Back Light of Display

Contrast adjustment

● Only for Laser Plummet type

Point guide

2002-07-07 14:30:40

2002-07-07 14:30:40

Auto- inversion

Date & Time

↓

e

Set the Temperature, Pressure, Atmospheric Correction
Value (PPM), and Prism Constant Val ue (PSM)

Reticle
illumination

NP/P

View free memory for the Card/Internal Memory

1

↓

2

Non-prism/ Pri sm mod

Screen 1

Screen 2

2001-07-10 14:30:40

Laser Plummet
(Only for Laser Plummet type)

Screen 3

3

↓

1 NOMENCLATURE AND FUNCTIONS

1-9

1) View Date & Time

The date and time can be viewed on both screens. To change the displayed order of the date,
(Date/Month/Year), (Month / Date / Year) or (Year/Month/Date), see Chapter 8 “PARAMETERS SET­TING MODE” .
To set the date and time, see Chapter 9 “CHECK AND ADJUSTMENT”.

2) Turn the auto-tracking ON/OFF (GPT-8000A series)

Press the [F1] key to start auto-tracking. See Section 3.1 “Automatic Tracking” .

3) Turn the auto-collimating ON/OFF (GPT-8000A series)

Press the [F2] key to start auto-collimating. See Section 3.2 “ Automatic Collimation” .

4) Set the parameters for the auto-tracking (GPT-8000A series)

A proper setting for each parameter such as tracking pattern, tracking range, waiting time, track­ingspeed and tracking sensitivity. See Section 3.4 “Setting Parameters for
Auto-Tracking” .

5) Auto Inversion

Pressing the [F4] key causes the instrument to reverse and turn the telescope and
instrument automatically.

•To stop auto rotating in case of emergency, press any keys except POWER key.

• During auto rotation, do not disturb the instrument.(Stopping the rotation with a touch of the hand).
Such action may cause trouble or harm to instrument or operator.

6) Adjustment the contrast of the display

This enable you to adjust the contrast of the display.
Press the [F6] key to get to Screen 2 on the display.
Press the [F1] or [F2] key to brighten or dim the display.

7) Turn the display back light ON/OFF

When the back light is OFF, the light bulb icon is dark.
Press the [F6] key to get to Screen 2 on the display.
To turn the back light ON, press the [F3] key. Press [F3] again to turn the back light OFF.

8) Reticle illumination (OFF/Low/Middle/High)

Press the [F6] key to get to Screen 2 on the display. Press the [F4] key to turn the reticle illumination
ON. Continuing to press [F4] will change the intensity options.

9) View free memory

The amount of free memory for the card or internal memory can be displayed.
Press the [F6] key to get to Screen 2 on the display.
Press the [F5] key to view free memory.
The card memory icon (top left side of the display) shows the size of the card and the amount of free
memory. The second icon shows the amount of free internal memory.

See Chapter 6 “MEMORY MANAGE MODES”, for further options and instructions.

Low

OFF

Middle

High

1 NOMENCLATURE AND FUNCTIONS

1-10

10) Set audio mode

The light acceptance quantity level (Signal level) is displayed in this mode.
When reflected light from the prism is received, a buzzer sounds. This function is good for easy
collimation when the target is difficult to find.
Press the [F1] key on screen 3 (GPT-8000Aseries) or [F2] key on screen 1 (GPT-8000 series).
The received return signal level is displayed with bar graph as follows.

(1) To stop the buzzer, see Chapter 8 “PARAMETERS SETTING MODE”.
(2) Also, it is possible to display the signal level in Distance Measuring Mode.

11) Setting Temperature, Pressure, Atmospheric correction value (PPM), Prism
constant value (PSM)

The temperature, pressure, PPM, and PSM can be viewed by pressing the [F2] key on screen 3
(GPT-8000Aseries) or [F3] key on screen 1 (GPT-8000 series).
The received return signal level is displayed with bar graph as follows.
Refer to Chapter 10 “SETTING THE PRISM / NON-PRISM CONSTANT VALUE” and Chapter 11
“SETTING ATMOSPHERIC CORRECTION”, for further instructions.

12) Tracking Indicator (GPT-8000A series)

A man who is staying on line with the direction of GPT-8000Aseries or automatic tracking status
by emitted LED light (orange color) from GPT-8000Aseries.

• Operation

Pressing [F3] key on the screen three functions Tracking Indicator. The tracking indicator status
will be changed according to the type of auto tracking mode and its conditions. Aman from the
prism side can recognize the status of instrument.
When angle measuring value turns stable during tracking still object, the tracking indicator
changes from quick continuous flashing to quick intermittent flashing. So you can decide from the
sign of flashing for recording data timing at one person surveying.

Meaning of Tracking Indicator ON or Flashing

• The function of the Tracking Indicator will be
used as a guide to know the status of GPT­8000A series from the prism side. This is not a
function to determine precise collimating for
measuring.

• The quality of its results will depend on the
weather conditions and the use's eyesight.

• Sometimes happens difficulty of seeing the
tracking indicator because too much bright of
the beam for tracking.

• Using Tracking Indicator mode will result shorter
in reduced time out of the battery.

No light acceptance

Minimum quantity level

Maximum quantity leve

Tracking Indicator Status of instrume nt

Continuous ON Wait status
Slow flash ing Manual mode
Quick continuous flashing In case angle measuring value is instable during auto tracking mode.
Quick intermittent flashing In case angle measuring value is stable during auto tracking mode.

1 NOMENCLATURE AND FUNCTIONS

1-11

13) Point-guide (Point guide type of GPT-8000 series only)

This feature is most useful when doing stake out work. The Point Guide's red LEDs on the
GPT-8000 Series telescope assist the rod person in getting on-line. The Point Guide feature is fast
and simple to use.

•Operating Instructions

Press the [F1] key on the screen three to turn ON the Point Guide LEDs. The Point guide icon on the
display will become bright when turned ON. Looking the objective lens of the telescope, the right LED
will blink and the left LED will stay lit.

The Point Guide should be used within a dis­tance of 100 meters (328 ft.). The quality of its
results will depend on the weather conditions
and the use's eyesight.
The goal of the rod person is to look at both
LEDs on the instrument and move the prism
on-line until both LEDs become equally bright .
If the solid LED is brighter, move to the right. If
the blinking LED is brighter, move to the left.

14) Electric circular level graphic display

Electric circular level can be displayed by graphic. This function is good for level the instrument
when the circular level is difficult to see directly.
Press the [F4](GPT-8000Aseries) on the screen three or [F1] (GPT-8000 series) on the screen one
key to display the graphic.
In the displays of reverse side, the graphic bubble moves in reverse.

Rotate the leveling screws while observing the display.
After leveling, press [F1]. The display changes to the previous mode.

1 NOMENCLATURE AND FUNCTIONS

1-12

15) Laser Plummet (Only for Laser Plummet type)

Laser plummet option will help you to center the instrument easily onto the measurement point.
Press the star key to view the instrument options. Since there are three screens of options, press
[F6](•) soft key twice to view the screen 3.
Press the [F1] key (GPT-8000 series) or [F5] key (GPT-8000A series) to turn on/off of laser plum­met option.

Laser plummet icon will change as follows.

Symbol mark while the laser is emitting.

The following symbol mark will indicate that the laser is emitting.

Laser Plummet auto-cut off function

The laser plummet will be turned off automatically after 1 to 99 minutes (Default:3 minutes). It is
also possible to stop the auto-cut off function.
Refer to Chapter 8 “PARAMETERS SETTING MODE” to change the time or to invalidate the
function.

1.6 Auto Power Off

The Auto Power OFF feature can be set from 1 to 99 minutes. If no keys are pressed within the set
time, the Auto Power OFF will automatically turn the instrument OFF in order to save the
battery time.
See Chapter 8 “PARAMETERS SETTING MODE”, for further instructions.

1.7 Data Output

When GPT-8000A/8000 series receives data output command from an external
connected device, the measured data will be output by GPT-8000A/8000 series. Select
from the following 2 ways for the output. (For setting, see Chapter 8 “PARAMETERS
SETTING MODE” .)
REC-A : The measurement is started and new data is output.
REC-B : The data being displayed is output.

1.8 Rotating Method

1.8.1 Rotating by H/V Shuttle and H/V Jog

H/V shuttle or H/V jog can be used to rotate the instrument manually. The shuttle movement or
displacement is proportional in speed and size of angle desired. Asmall, slow turn of the shuttle will
result in a slow small angle displaced. Likewise, a larger abrupt turn of the shuttle will result in a
coarse angle displacement. H/V jog can be used for accurate collimating of the target much like a
standard tangent screw.

1.8.2 Auto Inversion

Pressing the [F4] key in Star Key mode causes the instrument to reverse and turn the telescope and
instrument automatically.

•To stop auto rotating by auto inversion key in case of emergency, press any keys except
POWER key.

V : 87°55'45"5
HR: 180°44'12"5

SD HD NEZ

The symbol mark will blink while the laser
plummet is working

↓

1 NOMENCLATURE AND FUNCTIONS

1-13

• During auto rotation, don't disturb the instrument.(Stopping the rotation with a touch of the
hand). Such action may cause trouble or harm to instrument or operator.
See Section 1.5 “Star key mode” for further instructions.

1.8.3 Rotating automatically to a required Horizontal and Vertical angle

In Standard Measurement Modes, the instrument can be rotated automatically by input a required
horizontal and/or vertical angle.
For further instructions, see Section 4.1.5 “Automatic Rotation to a Required Horizontal and Vertical
Absolute Angle” .

• Attaching Precaution Label

Attach 4 precaution labels to the instrument in specified places to avoid the unexpected
accident such as pinching fingers between telescope and body of instrument or telescope
and hand grip during automatic rotation.

• Attach upper side of telescope and near the plate level.

V : 87°55'45"5

This mark will appear while the
instrument is rotating automat ically.

HR: 180°44'12"5

SD HD NEZ 0SET HOLD P1

Caution label

↓

CAUTION

Do not place fingers near
telescope during rotation.

● Attach upper side of telescope and nea r the pla t e le vel

Caution label

Caution l abel

1 NOMENCLATURE AND FUNCTIONS

1-14

1.9 Using together with RC-2II Remote Control System
(GPT-8000A series)

Using together with RC-2II Remote Control System makes it possible to optical communicate
between the instrument and remote controller RC-2II, the prism side. This gives easy operation by
one man surveying in applying programs.
Also connecting data collector to remote controller, you can manage communication reciprocally
between the instrument and direct to data collector.

Turn-round function

You can turn the GPT-8000A series round to the remote controller RC-2II side easily by [Turn-round]
key of the remote controller RC-2II. This function helps to increase one man surveying efficiency.

See to Section 5.7 “External Link (GPT-8000Aseries)” and Chapter 8 “PARAMETERS SETTING
MODE” for further information.

• Set the transmit path to " RC".

• Set the transmit channel same as RC-2II side.

•To execute transmission, set the remote in Programs mode to [Remote].

1 NOMENCLATURE AND FUNCTIONS

1-15

1.10 Using connecting with Personal Computer (PC)

Commands for tracking mode correspond only to GPT-8000A series.

The auto-tracking function or auto collimating function makes easy remote control of the instrument
from PC. The followings are the main communication commands and explanations. How to communi­cate or more informations of communication command, you can see the interface manual which pro­vided optionally.Commands for tracking mode correspond only to GPT-8000A series. The auto-track­ing function or auto collimating function makes easy remote control of the instrument from PC. The fol­lowings are the main communication commands and explanations. How to communicate or more
informations of communication command, you can see the interface manual which provided optionally.

Commands Action of GPT-8000A series

Transmit

command

Mode setting

Trans m i t command for measured data

Trans m i t command for tracking mode

Trans m i t command for battery level The ba ttery level will be out put.

Trans m i t command for coordinate of
instrument point

Trans m i t command for tracking
parameter

Setting of angle measurement

Setting of distance measurement

Setting coordinate of instrument point Setting the coordinate of instrument point.

Setting the tracking parameter

Each measured data will be out put
according to the com man d ty pe.

The status of Automatic Tracking mode
will be out put.

Setting coordinate of instrument point will
be out pu t .

Each setting trac king parameter of
instrument will be out put acc or d ing to the
command type.

Each selecting mode in horizontal angle
or angle measurement can be decided
according to the purpose of comm and.

Setting the measurement mode for
distance measurement.

Setti ng each tracki ng parameter
according to the com man d.

Action

T.I. ON / OFF ON / OFF of Tracking indicator.

Rotating command Rotating of s ett ing angle.

Inversion Inversion movement.

Setting tracki ng mode

Setting from automatic tracking mode to
each command mode.

2 PREPARATION FOR MEASUREMENT

2-1

2 PREPARATION FOR MEASUREMENT

2.1 Power Connection

(unnecessary if on-board Ni-MH battery BT-56Q is used)

See below for connecting the external battery pack.

• Battery pack BT-3Q

Power cord , PC-5 is used.

• Large capacity battery pack BT-3L

Power cord PC-6 is used.

• When using a external battery, the rechargeable battery BT-56Q should be attached
(The instrument will lack in balance if the internal battery BT-56Q is removed.)

The external battery and the internal battery can be used at the same time. The GPT-8000A/8000
series will select a battery due to the battery remaining automatically.

Connector ends

PC-5

PC-6

BT-3Q

BT

-3L

PC-5

PC-6

2 PREPARATION FOR MEASUREMENT

2-2

2.2 Setting Instrument Up For Measurement

Mount the instrument to the tripod. Level and center the instrument precisely to insure the best per­formance. Use tripods with a tripod screw of 5/8 in. diameter and 11 threads per inch, such as the
Type E TOPCON wide- frame wooden tripod.

Reference: Leveling and Centering the Instrumen

1. Setting up the T r ipod

First, e xtend the e xtension legs to suitable lengths
and tighten the screws on their mid sections.

2. Attaching the Instrument on the Tripod
Head

Place the instrument carefully on the tripod head
and slide the instrument by loosening the tripod
screw . If the plumb bob is positioned right over the
center of th e point, slightly ti gh ten t he tripod
screw.

3. Roughly Le veling the Instru men t by Using
the Circular Level

1Turn the leveling screws A and B to move the

bubble in the circular level. The bubble is now
located on a line per pendicular to a line
running throug h the centers o f the tw o le ve ling
screws being adjusted.

Leveling screw C

Leveling
screw A

2Turn the leveling screw C to bring the bubble

to the center of the circul ar l e vel.

4. Centering by Using the Plate Level

1Rotate the instrument horizon tally by using

the Horizontal motion/clamp screw and place
the plate level par allel with the line connecting
leveling screws A and B, and then bring the
bubble to the center of the plate level by
turning leveling screws A and B.

Leveling screw B

2Rotate the instrument 90

ver tical axis and turn the remaining leveling
screw or C to center the bubble once more.

90

3Repeat the procedures 1 and 2 for each 90

(100g) rotation of the instrument and check
whethe r t he bubble i s correctly cente red f o r all
four points.

5. Centering b y Usin g the Optical Plummet
Telescope

Adjust t he e y epiece of the optical plumm et
telescope to your ey esight.
Slide the instrument by loosening the tripod

t

screw, place the point on the cent er mark, and
then tighten the tripod screw. Sliding the
instrument carefully not to rotate that allows you
to get the least dislocation of the bubbl e.

Point

°

(100g) around its

Leveling screw C

Center mark

°

Leveling
screw A

6. Completely Leveling the Instrument

Lev el i ng the instrum ent precisely in a simila r way
to 4. Rotate the instrument and check to see that
the bub ble is in the center of t he plate level
regardless o f telescope dir ecti on, then tighten th e
tripod screw hard.

Leveling
screw B

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2-3

2.3 Power Switch Key ON

1) Confirm the instrument is leveled.

2) Turn the power switch ON.

3) Type your password.
Self checking mode will display.

To skip the self checking, press [F1](ESC)
key.

Level the instrument by turning the leveling
screws.
When the leveling is within ±30" and stable,
the self checking will start.

The instrument will turn automatically and
the tilt sensor offset value will be measured
and memorized.

After checking, the main menu icons will be
shown.

Battery Power Remaining Display

• Self checking option

The self checking function is to check internal communication and tilt sensor offset value. When
ambient temperature is changed or the instrument is not balanced by its internal battery is attached
or detached, the self checking is recommended.

• Password option

Setting a password (Maximum 10 digits number) and activating ON of password option can be help­ful to avoid miss operation by unauthorized operator. Setting password option is necessary to use
this function. To set password option, see Chapter 8 “PARAMETERS SETTING MODE”.

• Confirm the battery power remaining on the display. Replace with charged battery or charge
when battery level is low. Refer to Section 2.4 “Battery Level Indicator”.

Power O N

Input a password
[ ]

Self check mode

ESC

X:00°00'00"
Y:00°00'00"

Self checking ...

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Self checki

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2-4

2.4 Battery Level Indicator

The battery power indicator shows the level of battery strength.

Indicates Battery Power Remaining

Measurement is possible.

The power is poor. The battery should
be recharged or replace
the battery.
(Angle measurement can only be possi­ble, the auto-collimating and distance
measurement can not be possible.)

Measurement is impossible. Need to
recharge or replace the battery.

* Battery power remaining display is omitted in this manual.

Note:

1) The battery operating time will vary depending on the environmental conditions, such as
ambient temperature, charging time, and the number of times charging and discharging
the battery.

2)In low temperature (especially while the heater of display is working), the battery operating
time will shorten to one-half of normal temperature use.

3)The indicator for battery power remaining shows the power level during each measurement
mode. The condition indicated for the battery power remaining in the angle measurement mode
may not be adequate to measure a distance. Changing from angle mode to distance mode
during a poor battery condition may cause the EDM not to measure a distance. We recommend
that you check the battery condition before going into the field.

4)Also note, when changing from one measurement mode to another, the battery indicator
may not show a decrease or an increase immediately. The battery indicator system was
designed to show the general condition for the battery strength. It does not respond
instantly.

5)For more information on battery usage, refer to Chapter 13
“POWER SOURCE AND CHARGING”.

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