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    User Manual

    Version 1.0, English

    50403020

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    en

    4English DISTO

    Congratulations on your purchase of a DISTO.

    DISTO classic4/ lite4 hand-held laser meter

    Product identification

    The identification label for your product is fitted onthe back. The serial number is in the battery

    compartment. Enter model and serial number inyour User Manual, and always refer to thisinformation when you need to contact youragency orservice centre.

    Model: DISTO

    Serial no.:

    This User Manual containsimportant safety instructions (seesection "Safety Instructions") as well

    as instructions on use of the instrument.Read carefully through the User Manual before youswitch on the instrument.

    Symbols used

    The symbols used in this Ufollowing meanings:

    DANGER:

    Indicates an imminsituation which, if not avoidor serious injury.

    WARNING:

    Indicates a potentor an unintended use whicresult in death or serious in

    CAUTION:

    Indicates a potentor an unintended use whicresult in minor injury and/ofinancial and environmenta

    Important paragrapadhered to in pract

    product to be used in a tecefficient manner.

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    5DISTO classic4 / lite4 -1.0.0en

    Contents

    Introduction ..................................................................... 6Special features ................................................................... 6

    Area of applicability ............................................................ 6

    Types of Instrument, Keypad ........................................ 7DISTO classic4 ..................................................................... 7

    DISTO lite4 ............................................................................ 7

    Display .............................................................................. 8

    How to Use the Instrument ............................................ 8Inserting / replacing the batteries ...................................... 8

    Switching on DISTO ............................................................ 9

    Switching off DISTO ............................................................ 9

    Clear key ( ) ............................................... .................. 10

    Measuring .......................................................................... 10

    Distance measurement .................................................. 10

    Hints for measuring ........................................................ 10

    Continuous measurement (tracking) .............................. 11

    Laser in continuous operation...... ................................... 11

    Time delay release ......................................................... 12

    Calculations ....................................................................... 12

    Area ............................................................................... 12

    Volume ........................................................................... 12

    Partial heights, chain values ........................................... 13

    Doubling a measured value ............................................ 14

    Menu / settings .................................................................. 14

    Selecting reference setting ............................................. 15

    Selecting units ................................................... ............. 16

    Measure with offset (only classic4) ................................ 16

    Switching on/off "Beep" (only classic4) ........................... 17

    Resetting (only classic4) ................................................. 18

    Functions (only classic4

    ) ................................................... 18Fnc1 = Save values (constants) ..................................... 18

    Recalling the constant .................................................... 18

    Recall last measured value (stack) ................................. 19

    Fnc2 = Tracking - Maximum ........................................... 19

    Fnc3 = Tracking - Minimum ............................................ 20

    Fnc4 = Pythagoras, height measurement ....................... 20

    User Information ............................................................ 22Range ................................................................................. 22

    Rough surfaces ................................................................. 22

    Transparent surfaces ........................................................ 22

    Wet, smooth or high-gloss surfaces ................................ 22Inclined, round surfaces ................................................... 23

    Free-handed aiming .......................................................... 23

    In the field .......................................................................... 23

    Set mark for viewfinder ..................................................... 23

    Illumination ........................................................................ 24

    Accessories ....................................................................... 24

    Safety Instructions ..............Use of the instrument ........

    Permitted use .................

    Prohibited uses ..............

    Limits to use ......................

    Areas of responsibility ......

    Hazards in use ...................Important hazards in use

    Laser classification ...........

    Labelling..... .....................

    DISTO with telescopic view

    Electromagnetic compatibi

    FCC statement (applic. in U

    Care and Storage .................Care ....................................

    Storage ...............................

    Transport ...........................

    Despatch ............................

    Technical Data .....................Remarks on measuring acc

    Accuracy tests ...................

    Message Codes ...................

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    en

    6English DISTO

    This User Manual is for theDISTO lite4.

    General descriptions are

    Sections only valid for a spmarked accordingly.General illustrations are ofgenerally the name DISTO

    The electronic DISTO classic4 / lite4 belong to anew generation of hand-held laser meters. Provenconstruction combined with modern functionsmake it possible to use it efficiently and for exactmeasuring. In this way productivity increases and

    costs are lowered.

    Innovations like automatic release or maximumtracking help to make daily surveying tasks easier.The instrument is suited for width and distancemeasuring as well as calculating areas, volumesand segments.

    The operation of the instrument's functions can belearned easily in a short space of time.

    Easy and quick to learn. Interactive keys; with large and clear LCD Small, light-weight and easy-to-use Trouble free quick measuring with integrated

    visible laser beam

    Integrated calculation functions Built to withstand the hazards of a constructionsite

    Selectable measuring units

    Introduction Special features Area of applicabil

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    7DISTO classic4 / lite4 -1.0.0en

    Types of Instrument, Keypad

    DISTO classic4 DISTO lite4

    1 On key and measurement key2 Plus / MENU: function forward3 Minus / MENU: function backwards4 Multiply, automatic release5 Equals, enter

    1 On key and measurement key2 Plus / MENU: function forward3 Minus / MENU: function backwards4 Multiply, automatic release

    cld-z01

    cld-z03

    cld-z04

    1

    3

    4

    5

    9

    7

    2

    68

    6 Menu / Function 2/37 Save, Stack8 Functions9 Clear/Clear Entry, Normal Mode

    5 Equals, en6 Menu7 Clear/Clea

    6

    2

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    8English DISTO

    Display How to Use the In

    Inserting / replaci

    1. Simultaneously depressbattery cover. Remove b

    2. Replace batteries.

    If battery voltage issymbol appears on

    batteries.

    Always replace thset!

    c

    ld-z07

    cld-z08

    1

    2

    3

    54

    8

    6

    7

    15 14 13 12 11 10 9

    6

    161 Laser "on"2 Measurement reference (rear, stand, front)3 Reset instrument4 Display of the mathematical operators rsp.

    math. sign

    5 Main display (e.g. measured distance)6 Units (m(mm), m(cm), ft, ft in 1/16, in, in 1/16)7 Time symbol for time delay release8 Auxiliary display, (e.g. previous value)9 Battery display

    10 Pythagoras funct ion11 Recall stored constant

    (max. 10)12 Recal l last 15 values13 Beep (On/Off)14 Information

    15 Contact customer service16 Offset set ting

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    9DISTO classic4 / lite4 -1.0.0en

    Switching on DISTO

    The laser is switched on automatically, this symbolstarts to blink in the display.

    After 30 seconds the laser shuts off automatically.To reactivate the laser press .

    Briefly press (base functions, for all keys).

    Switching off DIS

    After a distance measur

    Press both symbols

    In Measuring and Track

    displayed):(Clear), press

    After 90 seconds tautomatically if:

    in this time no key was continuous measuring w the instrument was not

    measuring mode.

    cld-z10

    Do not use old and new batteries together. Do not use batteries from different

    manufacturers or batteries of different types. For type of battery, refer to Technical Data.

    Fit batteries the right way round.

    3. Replace battery cover. Push in and listen forlocking click sound.

    To save power, the DISTO switches offautomatically after 90 seconds if no key is pressed.

    cld-z09

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    10English DISTO

    DISTO lite4 featurefor measuring from

    Distance measurement

    Measuring

    The result is displayed immediately in the selectedunit.

    With the instrument on and the laser off, itis in "Normal Mode".

    cld-z11

    Switch on instrument. The laser is alsoswitched on, the instrument is in "PointingMode".

    A second press starts the distancemeasurement, "diSt" appears briefly onthe display.

    Hints for measuringThe clear key resets the DISTO to Normal Mode,i.e. it is set to zero (= Clear).

    The clear key may be pressed before or after ameasurement / calculation. In Menu Mode it resets

    to Normal Mode.

    During a function (e.g. during calculations, whilesetting up menus) the last selected function isdeleted (= Clear Entry), if it had not been

    executed by pressing .

    Clear key ( )

    Measuring from edge

    cld

    -z47

    The DISTO lite4 is"marking-off ops." distances.

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    11DISTO classic4 / lite4 -1.0.0en

    x O F Ff

    M E N U

    CDIST

    O N x O F

    F

    f

    M E N U

    CDIST

    O N

    In Normal Mode, psymbol is continuolong "beep" is hear

    A distance measur

    time the key is pre

    Activates continuo

    needs it (

    Switches off continuous la

    During continuous

    laser does not swi

    Press to switch on laser.

    Press and hold until the symbol lights uppermanently and "trc" appears briefly.

    The next press starts a distancemeasurement and the result is displayed.DISTO then resets to Normal Mode.

    Press / / to end Tracking Mode.

    Example:Stake off distance

    cld-z13

    Continuous measurement (tracking) Laser in continuous ope

    Measuring from flat planes

    cld-z12

    For stable measuring turn bumper 90 andplace instrument on the flat plane (only

    classic4).

    cld-z30

    Measuring from corners

    Precise measuring from corners notpossible with DISTO lite4 !

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    12English DISTO

    Calculations

    Area

    Measurement x measurement = area

    Measurement (e.g. 3.500m)

    Multiplication

    Measurement (e.g. 8.375m)

    = Area (e.g. 29.313m)

    Volume

    Measurement x measurem= Volume

    Measurement (e.g

    Multiplication

    Measurement (e.g

    Multiplication

    Measurement (e.g

    = Volume (e.g. 66.

    cld-z15

    Switch on laser (Pointing Mode).

    Press and hold until desired time delay hasbeen reached.

    On the screen it shows " " (delay) and a number(delay in seconds) appears on the display.

    As long as the key is pressed, the delay isincreased (max. 60 seconds).Once the key is released, the remaining seconds(59, 58, 57 ...) are displayed, until measuring. Thelast 5 secs. are counted down with a "beep".

    After the last "beep", the measurement is made,the value displayed.

    cld-z14

    Time delay release

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    13DISTO classic4 / lite4 -1.0.0en

    In the same way c(= any amount of dand sums of areaup.

    During calculations( ) is available has not been exec

    The volume can be calculated following anarea calculation(... = area, , , = volume).

    Measurement + measurement = sum , e.g. ofpartial heights

    Measurement

    Addition

    Measurement

    = Sum

    Measurement - measurement = difference

    Measurement

    Subtraction

    Measurement

    = Difference

    cld-z16

    Partial heights, chain values

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    14English DISTO

    It is easy to double the measured values, e.g. todetermine the length of the walls in a room:

    Measurement

    Addition

    Measurement

    = Sum (= half the length of the walls)

    Repeat, double measured value(= circumference).

    cld-z17

    Doubling a measured value Menu / settings

    With the help of the menu the user can configurethe instrument to his/her own specific and personal

    needs.

    Possible settings:

    DISTO classic4

    1 Setting reference

    2 Selecting measuring un

    cld-z18a

    DISTO lite4

    1 Setting reference

    2 Measure with offset (add/reduce)

    3 Selecting measuring units

    4 Beep (on / off)5 Reset

    cld-z18

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    15DISTO classic4 / lite4 -1.0.0en

    xOFF

    f MENU

    C

    DIST

    ON

    xOFF

    f MENU

    C

    DIST

    ON

    Calling up a menu:

    Switch on DISTO.

    Set to normal mode.

    Call up menu, is displayed.

    Press until desired menu screen appears

    or

    switch between the various menus.

    Confirm selection, activate menu point.

    Make desired selection.

    Confirm setting, reset to Normal Mode.

    "Clear Entry" may also be used (e.g. tocancel a selection).

    Permanent reference setting

    Press until and appear in the

    display.

    Confirm selection, starts to blink.

    Select reference setting.

    Confirm selection, reset to Normal Mode.All subsequent measurements are inreference to this setting !

    front stand

    Selecting reference setting

    Possible settings:

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    16English DISTO

    Reference setting only for one measurement

    Switch on DISTO, starts to blink.

    Select reference setting:

    front , stand , rear .

    Start measurement.

    The result is displayed with a blinking"reference setting" as indication that "rearreference" is not selected.

    Press until the desired unit (e.g. 0.000m)and are displayed.

    Confirm selection, the selected unit starts toblink.

    Select unit.

    Confirm selection, reset to Normal Mode.

    Selectable units: m (mm) = 0.000 m

    m (cm) = 0.00 m

    ft = 0.00 ft

    ft in 1/16 = 0 ft 0 in1/16 in = 0.0 in

    in 1/16 = 0 in1/16

    cld-z23

    Press until an

    Confirm function ,

    Set desired offs

    (e.g. 0.015m); q/ pressed. press .Offset can be pos

    (reduce)!

    Selecting units Measure with offset (onlySelecting reference setting, contd.

    cld-z31

    At the back of the instrument is a 1/4"

    camera thread.

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    17DISTO classic4 / lite4 -1.0.0en

    After making or changing settings, it isimperative that a test measurement is

    performed.

    Using the offset edge measurementscan be made correctly.

    Input of offset: -22mm (-0.022m). Otherwise,wrong measurements are the result.

    cld-z

    36

    Measure with offset (only classic4), contd.

    Press until andisplay.

    Confirm selection, appears in the disp

    Select on ( )

    Confirm selection,

    With Beep switchepermanently displa

    Switching on/off "Beep

    Confirm selection (or cancel with , ).

    To indicate that an offset has been set, thesymbol is displayed continuously (offset z 0).

    Measure. Subject to set offset, the

    measured results are displayed.

    Using this function you can measure withrough size, as an example !

    Please make this a rule:After rough size measurement always setDISTO to offset 0.000 :Call function as described, then , .

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    18English DISTO

    Measure and calculate desired values (e.g. heightof room, area, volume).

    Press until and start to blink.

    If desired, adjust value(e.g. from 2.297m to 2.300m) - for larger

    steps additionally press .

    With the unit can be adjusted. The

    adjustment is for m, m and m rsp. ft, ftand ft only.

    Press, and a number (=memory

    location) starts to blink.

    Select memory location.

    Save value.

    Press briefly, afirst constant memdisplayed (e.g. 2.3

    Select desired v

    Confirm, value is recalculating an area

    Cancel function.

    Functions (only classic4)

    Fnc1 = Save values (constants)

    Resetting

    Press until and appear in thedisplay.

    Confirm selection, starts blinking andis permanently displayed.

    Select components to be reset. Tochoose from:

    stack and constant (are deleted)or

    only stack (is deleted)or

    stack and constant (are deleted) and

    reference (rear) and offset (=0) and Beep (On) and unit (meter)

    Selected components are reset, back toMeasuring Mode.

    (only classic4) Recalling the constant

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    19DISTO classic4 / lite4 -1.0.0en

    Press briefly, and the contents of thefirst constant memory location aredisplayed.

    Press again, stack is activated and isdisplayed.

    Select desired value (max. 15!).

    Confirm, value is ready to be used for (e.g.calculating an area) or

    Cancel function.

    Recall last measured value (stack)

    Press, and are displayed

    or

    switch between the functions.

    Confirm function. Laser is on (PointingMode).

    Aim with the DISTO at a point to the left /right of the corner.

    cld-z20

    Fnc2 = Tracking - Maximum

    Determine maximum dimension, e.g. todetermine the (room) diagonal.

    Activate continuoubrief press.

    Slowly rotate the Dpast the corner.

    Stop cont

    The largest meas(e.g. 12.314m = di

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    en

    20English DISTO

    Move the DISTO a large amount around thetarget point.

    Stop continuous measurement.

    The smallest measurement is displayed(e.g.. 3.215m = height of the room).

    Both planes (e.g. floor/ceiling, walls) mustbe nearly parallel to each other.

    Press repeatedly until andappear.

    Confirm function. Laser is on (PointingMode).

    Aim DISTO approximately at the targetpoint.

    Activate continuous measurement with abrief press.

    cld-z25

    Fnc3 = Tracking - Minimum Fnc4 = Pythagoras, heig

    Determine the minimum dimension, e.g. ceilingheight, without having to precisely align to thenormal.

    cld-z21

    Long press until

    on the display.

    Confirm function, "display.

    Aim at the upper p

    Trigger measureminstrument!

    Accept value, "2 --

    Point the DISTO a(2).

    Long press, a minimeasurement is in

    Press briefly, atriggered.

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    21DISTO classic4 / lite4 -1.0.0en

    cld-z26 Determination with

    three measured points.

    Aim at third point.

    Trigger measurement.

    End function, the height and distance aredisplayed from three measurements(Pythagoras).

    Fnc4 = Pythagoras, ... contd.

    Accept value, "3 --

    Point the DISTO a(3).

    Long press, a minimeasurement is in

    Move the DISTO aideal measuremen

    Stop conti

    End function, the hpoint 1 and 2 (Pyt

    The measuring seadhered to in any

    Function can also measurements!

    All three (two) poin(horizontal) line in

    Press until and appear on the

    display.

    Confirm function, "1 ---"appears on the

    display.Aim at the upper point. (1).

    Trigger measurement; do not move theinstrument!

    Accept value, "2 ---" appears on the display.

    Aim at second point.(2).

    Trigger measurement; do not move theinstrument!

    cld-z32 Height determination

    between point 1 andpoint 2 with threemeasured points.

    Alternative:Move the DISTO a large amount around theideal measurement point.

    Stop of continuous measurement.

    Accept value, "3 ---" appears on the display.

    End function, the height and distance aredisplayed from two measurements (Pytha-goras).

    Or:

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    22English DISTO

    With each of the distance measuring youcan:

    make a simple distance measuring ( ) or

    use a value form stack ( ) or

    continuous measurement minimum ( )

    or

    a measurement with time delay release ( ).

    For short distances, a good base behindthe instrument is sufficient for mechanical

    alignment.

    You will obtain the best results if the DISTO

    is rotated around a fixed point (rear edge,

    thread position) and the axis of the laser beampasses through this axis. So do not simply place on

    a camera tripod, in this case the axis of the laser

    beam is approx. 70 to 100mm above the centre ofrotation, this can lead to significant variations in the

    height.

    User Information

    Range

    In daylight (outdoors) always work with laserviewfinder. If necessary, shade the target.

    Increased ranges:At night, at dusk and when target area is in theshade.

    Reduced range:The range of the DISTO can be reduced by matt,green and blue surfaces (also by trees or plants).

    Rough surfaces

    On a rough surface (e.g. coarse plaster) a meanvalue is indicated.

    To avoid measuring to the bottom of plaster joints:Use target plate, 3M "Post-it" or board.

    Transparent surfac

    To avoid measuring errorscolorless liquids (like wateFor materials and liquids u

    take a trial measurement.

    When aiming throuthere are several o

    erroneous measurements

    Wet, smooth or hig

    1. Aiming at a "flat" angle

    The DISTO may receive(error message E 255).2. If aiming at a right angle

    a signal that is too stron

    Fnc4 = Pythagoras, ... contd.

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    23DISTO classic4 / lite4 -1.0.0en

    (approx. 20 - 40 m):Use target plate 563875 (DIN C6) rsp. 723385 (DIN

    A4) or:Make your own target plates of any size:

    Attach the telescopic viewfinder, and check it isengaged by applying pressure from the side.

    Setting the telescopic viewfinder

    1. Keep pressed, laser on continously ( ).

    2. Set up indoors, 5m, 10m or 30m from a wall.

    3. Turn eyepiece slowly until crosshair and laserspot are sharply focused.

    In the field

    4. Use the two screws (side, height) to adjust the

    laser spot.

    Example: You are positioned exactly 5m in front ofa wall (approx. 0.5m). The laser spot must be inthe centre, exactly beside the 5m distance mark.In the field check adjustment from time to time. (inthe half-shade about 10-15m).

    Aim with and without the red filter in position(visibility is increased).

    Free-handed aiming

    Can be measured with the laser:Requirement: There is enough area on the targetsurface for the laser spot.

    Inclined, round surfaces

    cld-z27

    * Manufacturer 3MCompany

    'LVWQ G

    WR P ZKLWH 6.R W. K &DO

    PEURZQ (QJLQHHULQJ*UDGH

    Set mark for viewf

    Setting mark for adjustingthe telescopic viewfinder.

    Please copy the abovediagram 1:1.

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    24English DISTO

    Accessories

    Telescopic viewer (667478)For simple aiming operations, out in the open. Forhighly accurate aiming while far away from theobject. The laser spot on the object can be seenparticularly well in shaded areas after slewing inthe red filter.

    Wrist strap (667491) safeguard against dropping, prevents injury.

    Attach to fastening thread (1/4").Adjust loop: So that DISTO does not slip from the wrist. Loop does not need to be re-adjusted every time.

    Shoulder strap (563879)Fasten to hand loop clip; adjustable over a widerange.

    DISTO-clip (714871)With this clip your DISTO hangs comfortably onyour belt or waistband and is easily reached.

    Carrying pouch (667169)Large black carrying pouchprotection.Compartments for user maviewfinder and palmtop co

    Level (667158)For horizontal and vertical wall is highly uneven.

    Aiming accuracy about 1,measuring error of only abDISTO with this level is no

    Target plate 563875 (DIN

    723385 (DIN A4)For poorly reflecting surfac40 - 50m, over this distancthe special reflection layerUp to over 100m: Combinlarge target area.

    Holster (667489)For max. protection. Fitted

    Illumination

    Thanks to fluorescence, you can also see yourresult in the dark. If the display is placed under alight source (daylight, artificial light), it will

    illuminate for more than 15 minutes! Withoutconsuming any power!

    cld-z34

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    25DISTO classic4 / lite4 -1.0.0en

    WARNING:

    Prohibited use canmalfunction, and material It is the task of the person instrument to inform the ushow to counteract them. Toperated until the user has

    Limits to use

    See section "Tech

    Environment:Suitable for use in an atmopermanent human habitatiaggressive or explosive enUse in rain is permissible f

    Safety Instructions

    The following directions should enable the personresponsible for the DISTO, and the person whoactually uses the instrument, to anticipate andavoid operational hazards.The person responsible for the instrument mustensure that all users understand these directions

    and adhere to them.

    Use of the instrument

    Permitted use

    The permitted uses of the DISTO are the following: Measuring distances Computing areas and volumes Storing measurements

    Using the instrument without instruction Using outside the stated limits Deactivation of safety systems and removal of

    explanatory and hazard labels Opening of the equipment by using tools

    (screwdrivers etc.), as far as not specifically

    permitted for certain cases Carrying out modification or conversion of the

    product Use after misappropriation Use of accessories from other manufacturers

    without the express approval of LeicaGeosystems

    Deliberate or irresponsible behaviour onscaffolding, when using ladders, whenmeasuring near machines which are running, or

    near parts of machines or installations which areunprotected Aiming directly into the sun Deliberate dazzling of third parties; also in the

    dark Inadequate safeguards at the surveying site (e.g.

    when measuring on roads, etc.)

    Prohibited uses

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    26English DISTO

    Areas of responsibility

    Responsibilities of the manufacturer of theoriginal equipment Leica Geosystems AG,CH-9435 Heerbrugg (Leica Geosystems):Leica Geosystems is responsible for supplying theproduct, including the User Manual and originalaccessories, in a completely safe condition.

    Responsibilities of the manufacturer of non-Leica accessories:

    The manufacturers of non-LeicaGeosystems accessories for the DISTO are

    responsible for developing, implementing andcommunicating safety concepts for their products.They are also responsible for the effectiveness ofthese safety concepts in combination with theLeica Geosystems equipment.

    Responsibilities of the person in charge of theinstrument:

    WARNING:

    The person responsible for the instrumentmust ensure that the equipment is used in

    accordance with the instructions. This person isalso accountable for the deployment of personneland for their training and for the safety of theequipment when in use.The person in charge of the instrument has thefollowing duties: To understand the safety instructions on the

    product and the instructions in the User Manual. To be familiar with local safety regulations

    relating to accident prevention.

    To inform Leica Geosystems immediately if theequipment becomes unsafe.

    Hazards in use

    Important hazards in us

    WARNING:

    The absence of insinadequate imparting of inincorrect or prohibited useaccidents with far-reachingfinancial and environmentaPrecautions:

    All users must follow the sby the manufacturer and thperson responsible for the

    CAUTION:

    Watch out for erronmeasurements if the instru

    has been dropped or has bmodified.Precautions:Carry out periodic test meafter the instrument has beuse, and before, during anmeasurements.Make sure the DISTO optithere is no mechanical dam

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    27DISTO classic4

    / lite4

    -1.0.0en

    CAUTION:

    If you do not intendfor a long time, the batterieyour equipment!Precautions:Remove batteries if you ar

    instrument for an extended

    CAUTION:

    If the accessories are not properly secured, asubjected to mechanical setc.), the equipment may bdevices may be ineffectiveinjury.Precautions:

    When setting-up the instruaccessories (e.g. telescopshoulder strap, etc.) are cosecured and locked in pos

    Avoid subjecting the equipshock.

    CAUTION:

    In using the instruments for distancemeasurements or for positioning moving objects,(e.g. cranes, building equipment, platforms etc.)unforseen events may cause erroneousmeasurements.

    Precautions:Only use this product as a measuring sensor, notas a control device.Your system must beconfigured and operated in such a way, that in caseof an erroneous measurement, malfunction of thedevice or power failure due to installed safetymeasures (e.g. safety limit switch), it is assuredthat no damage will occur.

    CAUTION:

    On sending the instrument, or on thedisposal of batteries that are not fully discharged, afire could be caused by improper treatment.Precautions:Remove the batteries from their compartmentbefore sending the instrument. Dispose of batteriesonly if they are completely discharged (operate theinstrument in tracking mode, until batteries arecompletely discharged).

    CAUTION:

    Take care when aiming the DISTO directlyinto the sun. The receiver lens acts as amagnifying glass and can thus cause damage tothe instrument internals.Precautions:

    Do not aim the DISTO directly at the sun.

    WARNING:

    Insufficient securing or marking of yourmeasurement site could cause a dangeroussituation on the public highway, building site, or inthe factory etc.Precautions:

    Always ensure your measurement site isappropriately secured. Obey the local accident

    prevention regulations, and road safety rules, at alltimes.

    Important hazards in use, contd.

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    28English DISTO

    WARNING:

    If the equipment is improperly disposed of,the following can happen: If plastic parts are burnt, poisonous gases are

    produced which may impair health. If batteries are damaged or overheated, they can

    explode and cause poisoning, burning, corrosionor environmental contamination.

    By disposing of the equipment irresponsibly youmay enable unauthorized persons to use it incontravention of the regulations, exposingthemselves and third parties to the risk of severeinjury and contaminating the environment.

    Precautions:Dispose of the equipment appropriately inaccordance with the regulations in force in your

    country. Always prevent access to the equipmentby unauthorized personnel.

    Important hazards in use, contd. Laser classification

    The DISTO produces a visible laser beam whichemerges from the front of the instrument.

    It is a Class 2 laser product in accordance with: IEC60825-1 : 1993 "Radiation safety of laser

    products"

    EN60825-1 : 1994 "Radiation safety of laserproducts"

    It is a Class II laser product in accordance with: FDA 21CFR Ch.I 1040 : 1988 (US Department

    of Health and Human Service, Code of FederalRegulations)

    Laser Class 2/II products:Do not stare into the laser beam or direct it towardsother people unnecessarily. Eye protection is

    normally afforded by aversion responses includingthe blink reflex.

    WARNING:

    Looking directly intaids (e.g. binoculars, teleshazardous.Precautions:Do not look directly into th

    CAUTION:

    Looking into the lahazardous to the eyes.Precautions:Do not look into the laser blaser beam is aimed above(particularly with fixed instetc..)

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    29DISTO classic4

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    CAUTION:

    Allow only authorizservice workshops

    instruments.

    Laser beam

    outlet

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    Maximum radiant power : 0.95mW

    Emitted wavelength : 620-690nm

    Standard applied : EN60825-1:1994

    IEC60825-1 : 1993

    Labelling

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    en

    30English DISTO

    DISTO with telescopic viewfinder

    WARNING:

    Looking right at the reflected laser beam ina DISTO operated with telescopic viewfinder couldbe dangerous when you aim at areas that reflectlike a mirror, or emit reflections unexpectedly (e.g.a mirror, metallic surfaces, windows, prisms,

    liquids).Precautions:If you are using a telescopic viewfinder, do not aimat areas that are reflective like a mirror, or whichcould produce unintended reflections (e.g. mirrors,metallic surfaces, windows, prisms).

    Electromagnetic compatibility (EMC)

    The term "electromagnetic compatibility" is taken tomean the capability of the DISTO to functionsmoothly in an environment where electromagneticradiation and electrostatic discharges are present,and without causing electromagnetic interferenceto other equipment.

    WARNING:

    Electromagnetic radiation can causeinterference in other equipment.

    Although the DISTO meets the strict regulationsand standards which are in force in this respect,Leica Geosystems cannot completely exclude thepossibility that interference may be caused to otherequipment.

    CAUTION:

    Interference causeradiation can result in the measurements being exce

    Although the DISTO meetsand standards which are in

    Leica Geosystems cannotpossibility that interferenceDISTO by very intensive efor instance near radio tradiesel generators etc.Under such conditions, chfor their plausibility.

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    31DISTO classic4

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    FCC statement (applic. in U.S.)

    WARNING:

    This equipment has been tested and foundto comply with the limits for a Class B digitaldevice, pursuant to part 15 of the FCC Rules.These limits are designed to provide reasonableprotection against harmful interference in a

    residential installation.This equipment generates, uses and can radiateradio frequency energy and, if not installed andused in accordance with the instructions, maycause harmful interference to radiocommunications.

    However, there is no guarantee that interferencewill not occur in a particular installation.

    If this equipment does cause harmful interferenceto radio or television reception, which can bedetermined by turning the equipment off and on,the user is encouraged to try to correct theinterference by one or more of the followingmeasures: Reorient or relocate the receiving antenna. Increase the separation between the equipment

    and receiver.

    Connect the equipment into an outlet on a circuitdifferent from that to which the receiver isconnected.

    Consult the dealer or an experienced radio/TVtechnician for help.

    WARNING:Changes or modifications not expressly

    approved by Leica Geosystems for compliancecould void the users authority to operate theequipment.

    Product labelling:

    This device complies with part 15 of the FCCRules. Operation is subject to the following twoconditions: (1) This device may not cause harmfulinterference, and (2) this device must accept anyinterference received, including interference thatmay cause undesired operation.

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    en

    32English DISTO

    Care and Storage

    Care

    Clean and dry

    Blow away dust from lenses. Do not touch glass with fingers. Only clean with a soft cloth; if necessary, damp

    with pure alcohol.

    Do not use other cleaning agents. Plastic partscould be affected.Wipe off splashes of cement, plaster, etc. asquickly as possible, using water and a damp clothor sponge. Look after the optical surfaces with thesame care that you would apply to spectacles,cameras and field glasses.

    Storage

    Please respect the temperature limits,specially during summer when storing the

    equipment inside a vehicle.(-40C to +70C / -40F to +158F)

    Unpack instruments and accessories thathave become wet. Dry off the instrument,

    container and accessories (at maximum 40 C /108F) and clean. Only repack the equipment whenit is completely dry.

    After longer periods of storage or transportcarry out a check measurement before

    using the equipment.

    If the indoor and outdoor temperatures are verydifferent, allow time for the instrument to adapt.

    If the DISTO is removed from an air-conditionedroom and exposed to warm damp air, theinstrument and the optics will fog over. To reduce

    this effect, cover the instrument with a cloth andallow it to adapt slowly to the new conditions asyou would for a camera or a video.

    Transport

    The holster protects the Dmechanical shock, but not It is recommended that yoDISTO in the holster or ancontainer or packaging.

    Do not exceed the temperBefore embarking on a fligare permitted the DISTO a

    Despatch

    Always use the oripackaging (holster

    sending the instrument.You must remove the batteinstrument without batteri

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    Technical Data

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    34English DISTO

    Possible method of calcdeviation s:When using a computer wif you use the program Excmean value and the stadirectly from the 10 measu

    Formula for the standard d

    Calculation using the progOn the Insert menu, choosSelect category: Statistics within the Function AssistaDepending on the version language used, the names

    n ... number of measuxi... individual value of

    ... mean value of a s

    Remarks on measuring accuracy

    Range increases, the better the laserlight isreflected from the target area (diffuse, notreflective), and the brighter the laserpoint iscompared to the surrounding luminosity (indoors,dawn).From approx. 40 - 50 m use target plate, brown

    side (page 24)

    * The measuring accuracy corresponds to the ISO-recommendation ISO/R 1938-1971 with a statisticalconfidence level of 95% (i.e. twice the standarddeviation). The typical measuring accuracy relatesto average conditions for measuring within thespecified range. It is not valid for the user functions

    Fnc 2, 3, 4, and is not valid in the Tracking Mode.The maximum measuring error relates tounfavourable conditions such as: highly-reflecting surfaces (e.g. reflector tapes), operating at the limits of the permitted

    temperature range, adaption to ambienttemperature interrupted. (page 32)

    very bright ambient conditions, strong heatshimmer and can be up to 5 mm (twice thestandard deviation).

    ** At long range 30 ppm ( 3 mm/100 m) plusshort range error.

    A M C d

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    Accuracy tests Message Codes

    In case of messages sseveral times and check if displayed. Then call servicmessage displayed.Reset message with oswitch off).

    Accuracy tests on the DISTO for users certified toISO 900...:

    You can perform your own accuracy tests on theDISTO to meet the requirements of ISO 900... formeasuring equipment.

    Take a fixed, invariable, and convenientlyaccessible distance of about 1m to 10m, such asthe width of a window opening or of a room.Measure it ten times.

    Determine the magnitude of this distance with ameans of measurement that is monitored by anational, accredited calibration institute (traceabilityback to national standards).

    Determine the amount that the measurements varyfrom the nominal distance, and compute thestandard deviation (page 34).

    Record the standard deviation and set a date forthe next test.

    Repeat these tests at frequent and regularintervals, also before and after importantmeasuring jobs.

    Affix an adhesive label on the DISTO for accuracytests of measuring equipment and keep a detailed

    record of the test procedure.

    Your DISTO meets the specified accuracy ifstandard deviation remains smaller or equal to thetypical specified value.

    A DISTO whose measuring accuracy has beentested over a test distance works within thespecified tolerance over the entire distance andtemperature range specified in the manual.

    Please note the technical data and the descriptionof measuring accuracy in the manual (page 34).

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    Leica Geosystems AG, Heerbrugg, Switzerlandhas been certified as being equipped with a

    quality system which meets the International

    Standards of Quality Management and Quality

    Systems (ISO standard 9001) and Environmen-

    tal Management Systems (ISO standard 14001).

    Total Quality ManagemenOur commitment to total

    Ask your local Leica Geos

    information about our TQM

    TQM

    Pat No

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    Printed in Switzerland - Copyright Leica Geosystems AG,

    Heerbrugg, Switzerland 2001

    Translation of original text (723881-1.0.0de)

    723865-1.0.0en/fr/es/pt

    Leica Geosy

    CH-9435 H

    (Switze

    Phone +41 7

    Fax +41 71

    www.leica-geo

    Pat. No.

    US 5,815,251

    US 5,949,531

    EP 0738 899

    EP 0932 835