Leica 788472 User Manual

Leica DISTOTM E7400x

The original laser distance meter

ENTable of Contents

Instrument Set-up - - - - - - - - - - - - - - - - - - - - - - - - - - 2

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2
Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2
Display - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3
Insert batteries - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3

Operations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4

Switching ON/OFF - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4
Clear - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4
Message Codes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4
Adjusting measuring reference / tripod - - - - - - - - - - - - - - - - - 4
Multifunctional endpiece - - - - - - - - - - - - - - - - - - - - - - - - - - - 5
Distance unit setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5
Tilt unit setting- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5
Timer (automatic release) - - - - - - - - - - - - - - - - - - - - - - - - - - 5
Beep ON/OFF - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6
Illumination ON/OFF- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6
Keypad lock ON - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6
Keypad lock OFF - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6

Measuring Functions - - - - - - - - - - - - - - - - - - - - - - - - 7

Measuring single distance - - - - - - - - - - - - - - - - - - - - - - - - - - 7
Permament / Minimum-Maximum measuring- - - - - - - - - - - - - 7
Add / Subtract - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7
Area - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
Volume - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9
Triangular area - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10
Pythagoras (3-point)- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11
Pythagoras (partial height) - - - - - - - - - - - - - - - - - - - - - - - - - 12
Stake out - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 13
Smart Horizontal Mode - - - - - - - - - - - - - - - - - - - - - - - - - - 14
Height tracking - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14
Memory (20 last displays) - - - - - - - - - - - - - - - - - - - - - - - - - 15

Delete Memory - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

Calibration- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16

Calibration of tilt sensor (Tilt Calibration) - - - - - - - - - - - - - - - 16

Technical Data - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17

Message Codes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18

Care- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18

Warranty - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18

Safety Instructions - - - - - - - - - - - - - - - - - - - - - - - - - 18

Areas of responsibility - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18
Permitted use - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
Prohibited use - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
Hazards in use - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
Limits of use - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
Disposal- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
Electromagnetic Compatibility (EMC) - - - - - - - - - - - - - - - - - 19
FCC statement (applicable in U.S.) - - - - - - - - - - - - - - - - - - - 20
Laser classification- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 20
Labelling - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 20

Leica DISTOTM E7400x 788480a

1

ENInstrument Set-up

Display

On/Measure

Add

Area /

Volume /

Triangle area/

Pythagoras/

Stake out

Clear / Off

Subtract

Smart Hori­zontal Mode

Measuring

reference

Memory /
Unit

Timer

Introduction

The safety instructions and the user manual should be read
through carefully before the product is used for the first time.

The person responsible for the product must ensure that all
users understand these directions and adhere to them.

The symbols used have the following meanings:

WARNING

Indicates a potentially hazardous situation or an unintended use
which, if not avoided, will result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation or an unintended use
which, if not avoided, may result in minor injury and/or appreciable
material, financial and environmental damage.

Important paragraphs which must be adhered to in practice as

i

they enable the product to be used in a technically correct and

efficient manner.

Overview

Leica DISTOTM E7400x 788480a

2

ENInstrument Set-up

Horizontal

measurement

Units

Stake out

Ceiling area

Wall area

Circumference

Measuring

reference

2nd result

Area / Volume

Tilt angle

Info

Slope distance

Addition /

Subtraction

Illumination

Memory

Timer

Triangle area

Battery
Min/Max

Measuring
Indirect height

Pythagoras

Main line

i

To ensure a relia­ble use, do not
use zinc-carbon
batteries.

Change batteries
when battery
symbol is flashing.

Display

Insert batteries

Leica DISTOTM E7400x 788480a

3

Switching ON/OFF Clear Message Codes

ON

OFF

2 sec

Device is turned
OFF.

i

Press ON but­ton 2 sec to start
continuous laser
mode.

1x

Undo last action.

2x

Leave actual func­tion, go to default
operation mode.

If the message "InFo" appears with
a number, observe the instructions
in section "Message Codes".

Example:

Distance is measured from the
front of the device.

1

i

Press button
2sec and ref­erence from
front is set
permanently.

Distance is measured
from the tripod thread
permanently.

2

Distance is measured from the rear
of the device (standard setting).

3

Adjusting measuring reference / tripod

ENOperations

Leica DISTOTM E7400x 788480a

4

Multifunctional endpiece

i

The orientation
of the endpiece
is automatically
detected and
the zero point is
accordingly ad­justed.

Switch between the
following units:

0.000 m

0.0000 m

0.00 m

0.00 ft

0‘00‘‘ 1/32

0‘00‘‘ 1/16

0‘00‘‘ 1/8

0‘00‘‘ 1/4

0.00 in

0 in 1/32

0 in 1/16

0 in 1/8

0 in 1/4

2 sec

Switch between the
following units:

0.0 °

0.0 %

2 sec

simultaneously

s

1

Adjust delay of auto­matic release (max.
60 sec, standard set­ting 5 sec)

2

i

Once the key is released with the la­ser activated, the remaining seconds
until the measurement are displayed
in a countdown. The delayed release
is recommended for precise aiming
e.g. at long distances. It avoids shak­ing of the device when pressing the
measurement key.

Distance unit setting Tilt unit setting

Timer (automatic release)

ENOperations

Leica DISTOTM E7400x 788480a

5

Beep ON/OFF Illumination ON/OFF

2 sec

simultane-

ously

2 sec

simultane-

ously

2 sec

simultane-

ously

PRESS

MINUS

1

within

2 sec

2

Keypad lock ON Keypad lock OFF

ENOperations

Leica DISTOTM E7400x 788480a

6

Measuring single distance

1

Aim active laser at target.

2

8.532 m

3

i

Target surfaces: Measuring errors
can occur when measuring to col­ourless liquids, glass, styrofoam or
semi-permeable surfaces or when
aiming at high gloss surfaces.
Against dark surfaces the measur­ing time increases.

1

2 sec

8.532 m

Used to measure room diagonals (maximum val­ues) or horizontal distance (minimum values)

The minimum and maximum dis­tance measured is displayed (min,
max.). The last value measured is
displayed in the main line.

min. max.

2

Stops permanent / minimum­maximum measuring.

3

7.332 m

1

The next meas­urement is added
to the previous
one.

2

The next meas­urement is sub­tracted from the
previous one.

7.332 m

12.847 m

3

i

The result is shown in the main
line and the measured value
above. This process can be re­peated as required. The same
process can be used for adding or
subtracting areas or volumes.

Permament / Minimum-Maximum measuring

Add / Subtract

ENMeasuring Functions

Leica DISTOTM E7400x 788480a

7

Area

11x2

Aim laser at first
target point.

3

4

Aim laser at sec­ond target point.

24.352 m

2

5

i

The result is shown in the main line
and the measured value above.

Partial Measurements:
Press + or - after starting the first

measurement. Measure and add
or subtract distances. Finish with
DIST. Measure 2nd length.

19.823 m

24.352 m

2

2 sec

Circumference

Area

6

ENMeasuring Functions

Leica DISTOTM E7400x 788480a

8

Volume

12x2

Aim laser at first
target point.

3

4

Aim laser at sec­ond target point.

5

6

Aim laser at third
target point.

78.694 m

3

7

i

The result is
shown in the
main line and
the measured
value above.

24.224 m

2

208.703 m

2

80.208 m

78.694 m

3

2 sec

Circumference

Wall areas
Ceiling/floor area

Volume

8

ENMeasuring Functions

Leica DISTOTM E7400x 788480a

9

Triangular area

13x2

Aim laser at first
target point.

3

4

Aim laser at sec­ond target point.

5

6

Aim laser at third
target point.

24.352 m

2

7

33.852 m

24.352 m

2

40.8 °

2 sec

Angle included by the first
two measurements

Circumference

Triangular area

8

ENMeasuring Functions

Leica DISTOTM E7400x 788480a

10

Pythagoras (3-point)

14x2

Aim laser at upper
point.

3

4

Aim laser at rec­tangular point.

5

6

Aim laser at lower point.

8.294 m

7

i

The result is shown in the main
line and the measured distance
above.

Pressing the measuring key for 2
sec in the function activates auto­matically Minimum or Maximum
measurement.

ENMeasuring Functions

Leica DISTOTM E7400x 788480a

11

Pythagoras (partial height)

15x2

Aim laser at upper
point.

3

4

Aim laser at 2nd
point.

5

6

Aim laser at rec­tangular point.

2.602 m

7

i

The result is shown in the main
line and the measured distance
above.

Pressing the measuring key for 2
sec in the function activates au­tomatically Minimum or Maxi­mum measurement.

ENMeasuring Functions

Leica DISTOTM E7400x 788480a

12

Stake out

i

Two different
distances (a
and b) can be
entered to
mark off de­fined measured
lengths.

1

2

3

a

b

b

a = b

1

2

3

a

b

b

a = b

1.000 m

1

6x

1.012 m

2

Adjust
value "a".

3

Approve
value "a".

0.625 m

4

Adjust
value "b".

5

Approve value "b" and
start measurement.

6

Move device
slowly along the
stake-out line.
The distance to
the next stake out
point is displayed.

0.625 m

0.240 m

0.240 m is missing up to
next 0.625 m distance.

i

When approaching a stake
out point to less than 0.1 m
the instrument starts to beep.

The function can be stopped
by pressing the CLEAR/OFF
button.

ENMeasuring Functions

Leica DISTOTM E7400x 788480a

13

Smart Horizontal Mode

1

Aim laser at tar­get.

2

0.032 m

5.204 m

40.8 °

4.827 m

x

z

x

y

z

y

3

(up to 360° and a transverse
tilt of ±10°)

i

Press key
again to
switch off
horizontal
measure­ment.

i

This function displays continously the
tracking height if the device is turned
on a tripod. No 2nd distance meas­uring is needed as only the angle is
automatically measured.

1

2x

x

Aim laser at low­er point.

2

3

h1

h2

h3

Aim laser at upper points and angle/
height tracking starts automatically.

4

30.2 °

6.932 m

40.8 °

9.827 m

x

y

h1

h2

h3

x

y

5

= Tracking height if device is
turned on tripod

= Tracking angle

6

Stops Height tracking and displays
last measurement.

Height tracking

ENMeasuring Functions

Leica DISTOTM E7400x 788480a

14

Memory (20 last displays) Delete Memory

8.294 m

20

20 last displays
are displayed.

1

8.294 m

20

Navigates trough
20 last displays.

2

The value from
the main line can
be used for fur­ther calculations.

2 sec

3

2 sec

simultaneously

Memory is completely deleted.

ENMeasuring Functions

Leica DISTOTM E7400x 788480a

15

Calibration of tilt sensor (Tilt Calibration)

1

2 sec

simultane-

ously

2

Place device on absolutely flat surface.

3

180°

4

Turn the device horizontally by 180°
and place it again on absolutely flat
surface.

5

6

Place device on absolutely flat surface.

7

180°

8

Turn the device horizontally by 180°
and place it again on absolutely flat
surface.

9

i

After 2 sec
the device
goes back to
the normal
mode.

ENCalibration

Leica DISTOTM E7400x 788480a

16

Distance measurement

Typical Measuring Tolerance* ± 1.0 mm / ~1/16" ***

Maximum Measuring
Tolerance**

Range at Leica target plate
GZM26

Typical Range* 0.05-80 m / 2-265 ft

Range at unfavourable
condition ****

Smallest unit displayed 0.1 mm / 1/32 in

Power Range Technology™yes

Ø laser point
at distances

± 2.0 mm / 0.08 in ***

100 m / 330 ft

60 m / 197 ft

6 /30 / 60 mm
(10 / 50 / 100 m)

Tilt measurement

Measuring tolerance to laser
beam*****

Measuring tolerance to
housing*****

Range 360°

± 0.2°

± 0.2°

General

Laser class 2

Laser type 635 nm, < 1 mW

Protection class IP65 (dust tight and jet

Autom. laser switch off after 90 s

Autom. power switch-off after 180 s

Battery durability (2 x AAA) up to 5000 measure-

Dimension (H x D x W) 122 x 55 x 31 mm

Weight (with batteries) 155 g / 4.98 oz

Temperature range:

-Storage

-Operation

water protected)

ments

4.80 x 2.17 x 1.22 in

-25 to 70 °C

-13 to 158 °F

-10 to 50 °C
14 to 122 °F

* applies for 100 % target reflectivity (white painted wall),
low background illumination, 25 ºC

** applies for 10 to 500 % target reflectivity, high background
illumination, - 10 ºC to + 50 ºC

*** Tolerances apply from 0.05 m to 10 m with a confidence
level of 95%. The maximum tolerance may deteriorate to

0.1 mm/m between 10 m to 30 m and to 0.20 mm/m for
distances above 30 m

**** applies for 100 % target reflectivity, background illumi­nation of approximately 30'000 lux

***** after user calibration. Additional angle related devia­tion of +/- 0.01° per degree up to +/-45° in each quadrant.
Applies at room temperature. For the whole operating
temperature range the maximum deviation increases by +/-

0.1°.

For accurate indirect results, the use of

i

a tripod is recommended. For accurate
tilt measurements a transverse tilt should be
avoided.

ENTechnical Data

Functions

Distance measuring yes

Min/Max measuring yes

Permanent measuring yes

Stake-out yes

Addition/Subtraction yes

Area yes

Triangle area yes

Volume yes

Painter function (area with
partial measurem.)

Pythagoras 3-point, partial height

Smart Horizontal Mode /
Indirect height

Height tracking yes

Memory 20 displays

Beep yes

Illuminated display yes

Multifunctional endpiece yes

yes

yes

Leica DISTOTM E7400x 788480a

17

If the message Error does not disappear
after switching on the device repeatedly,
contact the dealer.

If the message InFo appears with a number,
press the Clear button and observe the
following instructions:

No. Cause Correction

156 Transverse tilt greater

than 10°

162 Calibration mistake Make sure, the device is

204 Calculation error Perform measurement

252 Temperature too high Let device cool down.

253 Temperature too low Warm device up.

255 Received signal too

weak, measuring time
too long

256 Received signal too

high

257 Too much back-

ground light

258 Measurement outside

of measuring range

260 Laser beam inter-

rupted

Hold the instrument
without any transverse tilt.

placed on a absolutely
horizontal and flat surface.
Repeat the calibration
procedure. If the mistake
still occurs, contact your
dealer.

again.

Change target surface
(e.g. white paper).

Change target surface
(e.g. white paper).

Shadow target area.

Correct range.

Repeat measurement.

Care

• Clean the device with a damp, soft cloth.

• Never immerse the device in water.

• Never use aggressive cleaning agents or

solvents.

Warranty

The device comes with a 3-year warranty. To
receive the 3-year warranty, the product
must be registered on www.disto.com
within 8 weeks of the purchase date. If the
product is not registered, a 2-year warranty
applies.

Safety Instructions

ENMessage Codes

The person responsible for the instrument
must ensure that all users understand these
directions and adhere to them.

Areas of responsibility

Responsibilities of the manufacturer
of the original equipment:

Leica Geosystems AG
Heinrich-Wild-Strasse
CH-9435 Heerbrugg
Internet: www.disto.com
The company above is responsible for

supplying the product, including the User
Manual in a completely safe condition.

The company above is not responsible for
third party accessories.

Responsibilities of the person in
charge of the instrument:

• 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.

• Always prevent access to the product by
unauthorised personnel.

Leica DISTOTM E7400x 788480a

18

ENSafety Instructions

Permitted use

• Measuring distances

• Tilt measurement

Prohibited use

• Using the product 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.)

• Carrying out modification or conversion of
the product

• Use of accessories from other manufac­turers without express approval

• Deliberate dazzling of third parties; also in
the dark

• Inadequate safeguards at the surveying site
(e.g. when measuring on roads, construc­tion sites, etc.)

• Deliberate or irresponsible behaviour on
scaffolding, when using ladders, when
measuring near machines which are
running or near parts of machines or instal­lations which are unprotected

• Aiming directly in the sun

Hazards in use

WARNING

Watch out for erroneous measurements if
the instrument is defective or if it has been
dropped or has been misused or modified.
Carry out periodic test measurements.

Particularly after the instrument has been
subject to abnormal use, and before, during
and after important measurements.

CAUTION

Never attempt to repair the product your­self. In case of damage, contact a local dealer.

WARNING

Changes or modifications not expressly
approved could void the user’s authority to
operate the equipment.

Limits of use

Refer to section "Technical data".

i

The device is designed for use in areas
permanently habitable by humans. Do not
use the product in explosion hazardous areas
or in aggressive environments.

Disposal

CAUTION

Flat batteries must not be disposed of with
household waste. Care for the environment
and take them to the collection points
provided in accordance with national or local
regulations.

The product must not be disposed with
household waste.

Dispose of the product appropriately
in accordance with the national regu­lations in force in your country.

Adhere to the national and country specific
regulations.

Product specific treatment and waste
management can be downloaded from our
homepage.

Electromagnetic Compatibility
(EMC)

WARNING

The device conforms to the most stringent
requirements of the relevant standards and
regulations.

Yet, the possibility of causing interference in
other devices cannot be totally excluded.

Leica DISTOTM E7400x 788480a

19

ENSafety Instructions

Laser Radiation

Do not stare into the beam

Laser class 2

acc. IEC 60825-1:2007
Maximum radiant power: <1mW
Emitted wavelength: 620-690nm

Beam divergence: 0.16 x 0.6 mrad

Impulse duration: 0.2 x 10

-9

s - 0.8 x 10-9s

FCC statement (applicable in
U.S.)

This equipment has been tested and found to
comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reason­able protection against harmful interference
in a residential installation.This equipment
generates, uses and can radiate radio
frequency energy and, if not installed and
used in accordance with the instructions,
may cause harmful interference to radio
communications.

However, there is no guarantee that interfer­ence will not occur in a particular installation.
If this equipment does cause harmful interfer­ence to radio or television reception, which
can be determined by turning the equipment
off and on, the user is encouraged to try to
correct the interference by one or more of
the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the

equipment and receiver.

• Connect the equipment into an outlet on a
circuit different from that to which the
receiver is connected.

• Consult the dealer or an experienced
radio/TV technician for help.

Laser classification

The device produces visible laser beams,
which are emitted from the instrument:

It is a Class 2 laser product in accordance
with:

• IEC60825-1 : 2007 „Radiation safety of
laser products“

Laser Class 2 products:

Do not stare into the laser beam or direct it
towards other people unnecessarily. Eye
protection is normally afforded by aversion
responses including the blink reflex.

WARNING

Looking directly into the beam with optical
aids (e.g. binoculars, telescopes) can be
hazardous.

CAUTION

Looking into the laser beam may be
hazardous to the eyes.

Labelling

Subject to change (drawings, descriptions
and technical data) without prior notice.

Leica DISTOTM E7400x 788480a

20

Leica Geosystems AG
CH-9435 Heerbrugg
(Switzerland)
www.disto.com

Leica Geosystems AG, Heerbrugg, Switzerland has been certified as being
equipped with a quality system which meets the International Standards of
Quality Management and Quality Systems (ISO standard 9001) and Environ­mental Management Systems (ISO standard 14001).

Total Quality Management - Our commitment to total customer satisfaction.
Ask your local Leica Geosystems agent for more information about our TQM
program.

Copyright Leica Geosystems AG, Heerbrugg,
Switzerland 2012
Original text (788480a EN)

Pat. No.: WO 9427164, WO 9818019, WO 0244754, WO 0216964,

US 5949531, EP 1195617, US 7030969, WO 03104748,
Patents pending