Pentax W-821NX, W-822NX, W-823NX, W-835NX, W-825NX Basic Instruction Manual

TI Asahi Co.,Ltd.

International Sales Department
4-3-4 Ueno Iwatsuki-Ku, Saitama-Shi
Saitama, 339-0073 Japan
Tel.: [phone]
Fax. [phone]
E-mail: [e-mail]
www.pentaxsurveying.com/en/

TOTAL STATION

W-800

BASIC
INSTRUCTION

MANUAL

W-821NX
W-822NX
W-823NX
W-825NX
W-835NX

SERIES

This Basic Instruction Manual contains the basic operation procedures and precautions on
W-800 series hardware.

W-800 series is an open platform product and you can enjoy variety of application software on it.
Regarding the operations of application software, please refer to their respective manuals.

Copyright © 2012 TI Asahi Co.,Ltd.

TI Asahi Co.,Ltd. makes no warranty, expressed or implied, including but not limited to any im­plied warranties or merchantability or fitness for a particular purpose, regarding these materials
and makes such materials available.

Before using this product, be sure that you have thoroughly read and
understood this instruction manual to ensure proper operation.After reading
this manual, be sure to keep in a convenient place for easy reference.

1

PRECAUTIONS REGARDING SAFETY

Safety Precautions (Must be followed)

The following items are intended to prevent possible injury to the user or other people and/or
damage to the instrument before it occurs. These safety precautions are important to the safe
operation of this product and should be observed at all times.

Distinctive displays

The following displays are used to distinguish precautions by the degree of injury or damage
that may result if the precaution is ignored.

WARNING

Items indicated by this display are precautions which, if ignored, would result in serious injury.

CAUTION

Items indicated by this display are precautions which,if ignored, may result in injury or
material.

• Here “injury” refers to injuries such as cuts, burns or electric shock the treatment of which
will not likely require hospitalization or long-term attention.

• “Material damage” refers to damage to facilities, buildings, acquired data,etc.

Before using this product, be sure that you have thoroughly read and understood this instruc­tion manual to ensure proper operation.After reading this manual, be sure to keep it in a conve­nient place for easy reference.

This instrument complies with the protection requirement for residential and commercial areas.
If this instrument is used close to industrial areas or transmitters, the equipment can be influen­ced by electromagnetic fields.

WARNING

Do not stare into the laser beam directly as this may result in damage to your eyes.
W-800 is a Class IIIa (3R) Laser product.

Do not look into the laser radiation aperture directly as this may result in damage to your eyes.

Never use the telescope to view intense light such as direct sunlight or sunlight reflected
through a prism as this may result in loss of sight.

Do not disassemble, modify or repair this product as there a risk of laser radiation.

Do not aim the laser beam at a person as it is harmful to the eyes and body. Receive the
examination treatment by the doctor when the eyesight or body trouble is doubted by
any chance.

2

• Electro-Magnetic Compatibility (EMC): This instrument complies with the protection
requirement for residential and commercial areas.If this instrument is used close to industrial
areas or transmitters, the equipment can be influenced by electromagnetic fields.

• Do not use this product in a coal mine, in a location where there is coal dust, or near flam­mable material as there is a risk of explosion.

• Do not disassemble, modify or repair this product as there is a risk of fire, electric shock and
burn injury.If you think the product requires repair, contact the retail outlet where you pur­chased it or an authorized repair site.

• Only use the battery charger intended for this product as the battery charger.
Use of another battery charger entails a risk of fire or burn injury from the battery bursting
into flames due to possible differences in voltage or polarity.

• Do not use a damaged electric cord plug or loose electric outlet when charging as there is
a risk of fire or electric shock.

• Do not charge the battery while covered by clothes or similar item as there is a risk of fire if
the clothes ignite.

• Do not use the battery or charger when wet as there is a risk of fire and burn injury due to
short-circuit.

• To prevent making short-circuit when removing the battery and charger from the case and
storing them, apply electrically resistant tape to the poles of the battery. Storing the bat­tery and charger as it may result in fire or burn injury due to short-circuit.

• Do not throw the battery into fire or expose it to heat as there is a risk of injury if it explodes.

CAUTION

For your safety,perform the initial and periodical inspection as well as when the instrument
is fixed and adjusted.

When the laser beam enters eyes, an unexpected accident might be caused by blink of
eyes. Do not place the laser product at a height where its laser beam may hit the eyes of
car drivers and pedestrians.

Do not place the laser product at a place where its laser beam may hit a reflecting object
such as a mirror or a glass window.The reflection beam of the laser is also harmful to the
human body.

When not performing measurement, cut off the power supply or shade the Objective lens
with Objective cap to prevent the instrument emitting the laser beam.

Keep the laser product in the place where the person who does not have the product
knowledge such as children does not touch by mistake.

Before disposing of the instrument, destroy its power supply mechanism to prevent it
from emitting the laser beam.

• Do not remove the handgrip without good reason. If it does come off, be sure to attach it
securely to the instrument with screws. If it is not fastened securely,the instrument may fall
when you grasp the handgrip, leading to possible injury.

• Do not short the poles of the battery or charger as there is a risk of injury or fire.

• Do not touch any fluid which may leak from the battery as there is a risk of chemical burn
injury or reaction.

• Do not insert or remove the electric plug with wet hands as there is a risk of electric shock.

• Do not use the case to stand on as it is slippery and unstable and may cause you to fall,
resulting in possible injury.

• Be sure the tripod itself and the instrument on the tripod are both installed securely as inse­cure installation may cause the tripod to fall over or the instrument to drop, resulting in pos­sible injury.

• Do not carry the tripod with the metal shoe pointing toward another person as it may injure
him/her.

• The instrument contains a rechargeable battery and a battery charger.

• It may be illegal to dispose the battery at the end of its useful life.

• Check with your local solid waste officials for details for recycling.

[Usage precautions]

Surveying instruments are high-precision instruments.In order to assure that the Electronic Total
Station W-800 series product which you have purchased will provide long-lasting maximum per­formance, the precautions in this manual must be followed. Be sure to follow these instructions
and use this product properly at all times.

[Solar observation]

WARNING

Never view the sun directly using the telescope as this may result in loss of sight.Never point the objec­tive lens directly at the sun as this may damage internal components.When using the instrument for
solar observation, be sure to attach the specially designed solar filter (MU64) to the objective lens.

[Laser beam]

Do not stare into laser beam.W-800 series is a Class IIIa (3R) Laser product.

[EDM axis]

The W-800 series EDM is the red visible laser beam and the beam diameter is very small. The
beam is emitted from the objective center and the base plate center hole. The EDM axis is
designed to coincide with the telescope sight axis (but both axes may deviate slightly because
of intense temperature changes and a long time lapse).

[Target constant]

Confirm the Target Constant of the instrument before measurement.
If a different constant is to be used,use the correct constant of the target.The constant is stored
in the instrument's memory when turned off.

3

4

[Reflectorless and reflector sheet]

Reflectorless measurement precautions:

• The measurement range and accuracy of Reflectorless are based on the condition that laser
beam is emitted perpendicular to the white side of the Kodak Gray Card. There is a possibi­lity that the range may vary when the target does not satisfy the conditions above at sur­vey work. The measurement range may be influenced by the shape of the target and its
environment.

• There is a possibility that the instrument may not be able to correctly calculate out the dis­tance when receiving reflected laser beam from forth and back directions in case of measu­ring the target on the road.

• There is a possibility that measured distance may be longer or shorter than the actual one
when measuring a target of slope or sphere or rugged shape as the distance is calculated
out from synthesized values.

• There is a possibility that the instrument may not be able to correctly calculate out the dis­tance when receiving reflected laser beam from a man or a car that comes and goes in front
of the target.

• There is a possibility that the distance may not be correctly measured when measuring a
target in the direction where there is a reflecting object (mirror, stainless board and white
wall, etc.) or under too strong sun light.

• In a situation high accuracy may not be expected, perform the measurement by reflector
sheet or prism.

• The measurement range at TRACK mode is over 5m.

• It may take longer time than usual when measuring the distance exceeding 300m or the
distance to an object that is hard to measure.

Reflector sheet measurement precautions:

• There is a possibility that correct distance measurement may not be performed by disper­sion or reduction of laser beam when the laser beam comes into the target from diagonal
angle.

• When using reflector sheet, set the reflector sheet to have its surface be perpendicular to
the aiming line. If it is positioned not to be perpendicular, there is a possibility that correct
distance measurement may not be performed by dispersion or reduction of laser beam.

[Battery & charger]

• Do not use any batteries and battery chargers other than those PENTAX assured adequate.

• If water should happen to splash on the instrument or the battery,wipe it off immediately and
allow it to dry in a dry location. Do not put the instrument in the case until it is completely dry
as this may result in damage to the instrument.

• Turn off the power when removing the battery from the instrument as removing the battery
while the power is still on may result in damage to the instrument.

• The battery mark displayed on the instrument is only an estimate of remaining battery
power and is not completely accurate. Replace the battery quickly when it is about to run
out as the time a battery lasts on one full charge differs depending on conditions of
ambient temperature, and the measurement mode of the instrument.

• Confirm the battery level remaining before operating.

[Auto focus]

The Auto focus mechanism is very precise but will not function under every condition. Focusing
depends on brightness,contrast,the shape and size of the target.In such a case,press the AF but­ton and focus on the target by operating the Power focus key or the Focus ring.

[LD POINT, laser pointer]

When making a correct direction using the “LD POINT”, aim the laser beam at the wall and mark
the center and then confirm the discrepancy between the reticle center and the marked point
beforehand.

[Interface]

Do not insert or remove SD card, CF card and USB Connector outdoors.
Be careful not to let dust, mud, sand, water, harmful gas or salty steam enter the card slot or USB
connector port. Be sure to turn the instrument’s power off before inserting or removing the SD
card, CF card or USB Connector.

[Touch panel]

Use the Stylus pen when you touch the panel for operation of software.
Do not touch the panel with any things such as fingertips or pen point as this may scratch and
damage the screen.

[Data saving]

When using application software, store data in SD card drive, CF card drive or DiskOnChip folder.
Data stored in other drives is deleted when the power is turned OFF.

[Storage and operating environment]

• To prevent making short-circuit when removing the battery and charger from the case and
storing them, apply electrically resistant tape to the poles of the battery. Storing the battery
and charger as is may result in fire or burn injury due to short-circuit.

• Avoid storing the instrument in places subject to extreme high, low or radically
fluctuating temperature. (Ambient temperature range during use: –20° C to +50° C)

• Distance measurements may take longer when atmospheric conditions are poor such as
when heat shimmer is present. When storing the instrument, always put it in its case and
avoid storage in dusty location or location subject to vibration or extreme heat or humidity.

• Whenever there is a sharp temperature difference between the instrument’s storage and
usage environment,allow the instrument to adjust to the environment for an hour or more
before using it. Be sure to protect the instrument from the sun if the location is subject to
intense direct sunlight.

• During surveys for which the survey precision or atmospheric measurement method has
been defined measure the atmospheric temperature and pressure separately and enter
those values rather than using the Automatic Atmospheric Correction function.

• The battery should be charged approximately once per month if the instrument is to be sto­red for an extended period of time. The instrument should also be removed from its case
occasionally and aired out.

• In addition to these precautions, be sure to handle the instrument properly at all times follo­wing the descriptions given in the various sections of this manual to assure safe and proper
measurements.

5

[Transporting and carrying the instrument]

• Be careful to protect this instrument from shock of impact and excessive vibration which
may result in damage during transportation and shipment.

• When transporting the instrument, always put it in the case and wrap shockabsorbing
material around it and be sure it is handled as “FRAGILE”.

[Checks and repairs]

• Always check the instrument before beginning work and check that the instrument is main­taining the proper level of precision. Pentax bears absolutely no responsibility for damages
due to survey results obtained from surveys conducted without an initial instrument check.
Never disassemble the instrument, battery or charger even if you do detect an abnormality
as there is a risk of fire or electric shock due to short-circuit.
If you think the product requires repair , contact the retail outlet where you purchased it or
an authorized repair site.

• Never disassemble the instrument, battery or charger even if you do detect an abnormality
as there is a there is a risk of fire or electric shock due to short-circuit, If you think the product
requires repair, contact the retail outlet where you purchased it or an authorized repair site.

6

CONTENTS

PRECAUTIONS REGARDING SAFETY 1

SAFETY PRECAUTIONS (MUST BE FOLLOWED) 1

USAGE PRECAUTIONS 3

1. BEFORE USING THE INSTRUMENT 9

1.1 NAMES OF PARTS 9

1.2 UNPACKING AND PACKING 10

1.3 STANDARD EQUIPMENT 10

1.4 ATTACHING AND CHARGING THE BATTERY 11

1.5 INSERTING / REMOVING SD CARD 14

1.6 INSERTING / REMOVING CF CARD 15

1.7 CONECTING USB CABLE 16

1.8 INTERNAL MEMORY 17

1.9 DETACHING / ATTACHING STYLUS PEN 17

2. DISPLAY AND KEYBOARD 18

2.1 DISPLAY AND KEYBOARD 18

2.2 OPERATION KEYS 18

2.3 ALPHANUMERIC INPUT 19

2.4 LD POINT, LASER POINTER 19

3. PREPARATION FOR SURVEYING 20

3.1 CENTERING AND LEVELING OF THE INSTRUMEN 20

3.2 LASER PLUMMET 21

3.3 LEVELING WITH CIRCULAR VIAL 22

3.4 EYEPIECE ADJUSTMENT 23

3.5 TARGET SIGHTING 24

3.6 ATTACHMENT AND DETACHMENT OF TRIBRACH 28

4. CHECKS AND ADJUSTMENTS 29

4.1 ELECTRONIC VIAL 29

4.2 CIRCULAR VIAL 30

4.3 VERTICAL RETICLE 31

4.4 PERPEND CULARITY OF LINE OF SIGHT TO HORIZONTAL AXIS 32

4.5 VERTICAL 0 POINT ERROR 32

4.6 LASER PLUMMET 33

4.7 OFFSET CONSTANT 33

4.8 BEAM AXIS AND LINE OF SIGHT 34

4.9 THE EDM BEAM AXIS 34

7

5. SPECIFICATIONS 35

6. APPENDIX 37

6.1 ATMOSPHERIC CORRECTION 37

6.2 hpa AND mmHg CONVERSION TABLE 37

6.3 ERROR WHEN NO ATMOSPHERIC CORRECTION IS MADE 38

6.4 ATMOSPHERIC REFRACTION AND EARTH CURVATURE CORRECTION 39

6.5 DISTANCE RANGE 40

7. NOTICE TO THE USER OF THIS PRODUCT 41

8

1. BEFORE USING THE INSTRUMENT

1.1 Names of parts

A shift fixed screw is attached to Base plate of a shift base type model.

9

Collimator

Power focus key

Eyepiece ring

Eyepiece

Laser indicator

Circulator vial

CF card slot

Display panel

Key board

RS-232C connector

Leveling screw

Focus ring

AF buton

Instrument height mark

Battery latch

Battery pack

Telescope tangent screw

Telescope clamp screw

Clamp screw

Tangent screw

SD card slot

USB connector

Top handle

Detaching knob

Base plate

Objective lens

1.2 Unpacking and packing

[Unpacking the Instrument from the case]

Å Set the case down gently with the lid facing upwards.
Ç Open the latches while pressing down on the lock (safety mechanism) and open the lid

of the case.

É Remove the instrument from the case.

[Packing the Instrument in the case]

Å Make sure the telescope is fairly level and lightly tighten the telescope clamp screw.
Ç Line up the housing marks (round yellow marks on the instrument) and tighten the

upper and lower clamp screws.

É With the housing marks facing upward,set the instrument gently in the case without forcing it.
Ñ Close the lid to the case and secure the latches.

1.3 Standard equipment

• Instrument

• Carrying case

• BP02 battery

• BC03/AC01 charger

• Plumb bob

• Hexagonal wrench

• Rain cover

• Quick Reference Guide

•CD

10

1.4 Attaching and charging the battery

[Removing the Battery]

Å Turn the Battery latch anticlockwise and remove the battery pack.
Ç Lift up the battery pack and remove it from the instrument.

• Be absolutely sure to turn the power off when removing the battery pack as removing
the battery pack while the power is still on may result in damage to the instrument.

[Attaching the battery]

Å Align the guide grooves on the battery pack with the guide grooves on the instrument

and push the top of the battery pack into place.

Ç Turn the Battery latch clockwise to fix.

• Turn and fix the Battery latch to lock the battery pack while in use

11

[Charging the battery]

• The battery BP02 is not charged at our factory shipment.It must be changed before use.

• For BP02 charge, use the special BC03 charger.

[Connection of code]

Å Insert the output plug of the power supply code in Jack of the AC adaptor.
Ç Insert the output plug of the AC adaptor in Jack of the charger.
É Insert the power supply plug of the power supply code in the outlet of AC power supply.

[Installation of battery]

Å Draw the battery to the lock lever side and put it on the battery pocket.

The battery is firmly installed on the battery pocket.

Ç Press down the battery and then slide it to the opposite direction of the lock lever.
É The lock lever goes up, and the battery is fixed.
Ñ Under such a condition, if “Connection of the code” is done, the charge with the battery

is begun.

[Detaching the battery]

Å Press the lock lever and slide the battery to the lock lever direction.
Ç Detach the battery packing from the battery pocket.

12

[Display panel]

Å Power supply lamp (red): Turns on when the power supply is turned on.
Ç Charge lamp (green): Turns on while charging and turns off when the charge is

completed.

É Discharge lamp (yellow): Turns on when you push the discharge button.

Turns off when the discharge is completed.

Ñ Installation lamp (red): Blinks or turns on when the battery packing is attached

normally.
Blinks when charge or discharge and turns on when charge is
completed.
(The charge lamp in the lower does not blink and does not
turn on)

Ö Discharge button: Discharge lamp lights when you push this button, and the

discharge of battery begins.

[How to charge]

Å It begins charging automatically when you set the battery packing in the charger which

beams the power supply lamp.

Ç Leave just as it is until the charge is completed.
É When the charge is completed, the charge lamp is turned off.
Ñ Detach the battery packing from the charger when the charge is completed.

[Refreshing the battery]

The use time shortens gradually by the phenomenon of “Effect of the memory” when the NiMH
battery leaves capacity and repeats the charge.The voltage recovers after refreshing and the use
time returns normally in such a battery.Please refresh one degree every five times of the charge.

[Refreshing]

Set the battery in the charger as well as the case of the charge. Push the electrical discharge
button.The electrical discharge lamp lights and the electrical discharge begins.
The electrical discharge lamp is turned off when the electrical discharge ends, the charge lamp
lights, and the charge starts automatically. Leave just as it is until the charge is completed.When
the charge is completed, the charge lamp is turned off. Detach the battery from the charger.

[Time of refreshing and charge]

Battery BP02 is discharged from the state of a full charge at about 960 minutes and the charge
is completed from the electrical discharge at about 130 minutes.However, the electrical dischar­ge time is proportional to the remainder capacity of the battery. Moreover,the time required for
refreshing might be different from the above-mentioned time according to a surrounding tem­perature and the state of the battery.

13

Å Power supply lamp

É Discharge lamp

Ö Discharge button

Ñ Installation lamp

Ç Charge lamp