Haglof Vertex Laser II VL402 User manual

HAGLÖF SWEDEN® AB
Vertex Laser VL402 v.1.1 manual enu 2009
Vertex Laser II
Operator’s Manual VL4 2 v.1.1
English

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 2
VERTEX LASER VL4 2 INSTRUMENT WITH BLUETOOTH®
FL XIBL AND ACCURAT H IGHT- DISTANC AND ANGL M ASURING
Art no: 15-1 3-1 1 VL402 Laser Class: 1 (USA, Canada) 3A ( U, other countries)
Product conforms to all provisions of US21CFR 1040.10 and 1040.11 and I C
60825-1. For safety instructions and precautions, please see page 1937 in this
manual.
Includes: Vertex Laser Measuring instrument, carrying case, battery and manual.
Manuals are also available in PDF-format for download on
www.haglofsweden.com If you cannot access the Internet, please call at +46
620 255 80 and a paper copy of the manual in your selected language will be
sent to you.
Optional Accessories: T3 transponder/reflector
Plot Centre Staff (monopod) with adapter for T3 360˚
Tripod with assembling kit
Serial IR-receiver for data input in handheld computer or PC
Product Origin: Sweden
Declaration of conformity according to the EMC Directive 89/336/EEC with amendment 92/31/EEC,
Low oltage Directive 73/23/EEC and CE Marking Directive 93/68/EEC
Haglöf Sweden AB Haglof Inc.,
Box 28, Klockargatan 8 P O Box 2548, 100 Solleftea Drive
S -882 21 Långsele US-39110 Madison, MS
Sweden USA
Ph: [phone] Ph: [phone]
Fax: [phone] Fax: [phone]
-mail: [e-mail] -mail: [e-mail]
www.haglofsweden.com

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 3
Index
Haglöf Sweden® AB ................................................................................................................................................. 1
Vertex Laser VL402 instrument with bluetooth® .................................................................................................... 2
Flexible and Accurate Height- Distance and Angle Measuring ........................................................................... 2
The Vertex Laser Vl402 ........................................................................................................................................... 6
General Information: the Vertex Laser instrument ............................................................................................ 6
Menu .................................................................................................................................................................. 7
Setup .................................................................................................................................................................. 8
P.OFFS T ............................................................................................................................................................. 8
R F.HGT .............................................................................................................................................................. 9
M.DIST ................................................................................................................................................................ 9
BAF ..................................................................................................................................................................... 9
Select the Distance Unit in the Laser.................................................................................................................. 9
Buttons .................................................................................................................................................................. 10
Shift Button.................................................................................................................................................. 10
Mode Button ............................................................................................................................................... 10
Power Button............................................................................................................................................... 10
Mode+Shift Buttons .................................................................................................................................... 10
Vertex Aim ........................................................................................................................................................ 10
Laser Aim .......................................................................................................................................................... 10
Height Measuring with VL402 ............................................................................................................................... 11
Measuring Heights ....................................................................................................................................... 11
Distance and Height Measuring with Laser ...................................................................................................... 12
Distance Measuring with Ultrasound ............................................................................................................... 12
H IGHT 3P with Laser ....................................................................................................................................... 13
H IGHT 2P Laser with Transponder/Target...................................................................................................... 14
H IGHT 2P with Ultrasound ............................................................................................................................. 14
H IGHT 2PL Laser 2-point Measuring ............................................................................................................... 15

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 4
ANGL Measuring ............................................................................................................................................. 16
Horizontal Distance with Ultrasound ............................................................................................................... 16
Calibration of Ultrasound ................................................................................................................................. 16
D LTA H IGHT .................................................................................................................................................. 17
Delta height function ................................................................................................................................... 17
Instructions .................................................................................................................................................. 17
xample ....................................................................................................................................................... 19
Hazard Tree Limit: Function in the VL402 to calculate Security Distance ............................................................. 20
General measuring model ................................................................................................................................ 22
TR LIMIT ........................................................................................................................................................ 23
Manual register of height to power line .......................................................................................................... 23
Measuring height to a power line .................................................................................................................... 24
LAS R ........................................................................................................................................................... 24
H IGHT 1P .................................................................................................................................................... 25
H IGHT 2P .................................................................................................................................................... 26
Ultra sound (H IGHT 2P) ............................................................................................................................. 26
Laser (H IGHT 2P) ........................................................................................................................................ 27
To Measure Tree Heights ...................................................................................................................................... 27
H IGHT 1P ........................................................................................................................................................ 28
H IGHT 3P ........................................................................................................................................................ 29
H IGHT 2P ........................................................................................................................................................ 30
H IGHT 2PL ....................................................................................................................................................... 31
Transfer of Data using IR .................................................................................................................................. 31
Battery Indicator (Laser Aim Display) ............................................................................................................... 32
Changing the battery ........................................................................................................................................ 32
Battery life ................................................................................................................................................... 32
VL402 V1.1 Bluetooth® ......................................................................................................................................... 33
Bluetooth in common computer units ............................................................................................................. 34
Allegro ......................................................................................................................................................... 34

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 5
Recon ........................................................................................................................................................... 34
Data format ...................................................................................................................................................... 34
Height measuring ........................................................................................................................................ 34
Distance measuring ..................................................................................................................................... 35
Sign format Bluetooth ...................................................................................................................................... 35
Technical specification .......................................................................................................................................... 36
Vertex Laser VL402 Instrument ................................................................................................................... 36
Laser ............................................................................................................................................................ 36
Ultrasound ................................................................................................................................................... 36
Transponder T3 ........................................................................................................................................... 36
Safety and operation precautions .................................................................................................................... 37
CAR , STORAG AND MAINT NANC ......................................................................................................... 37
NOT S ON BATT RI S .................................................................................................................................. 37
Troubleshooting Laser........................................................................................................................................... 38
Troubleshooting Vertex ........................................................................................................................................ 39
SAF TY Information .............................................................................................................................................. 40
Warranty and Service Information ................................................................................................................... 40
SOFTWAR ....................................................................................................................................................... 40

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 6
THE VERTEX LASER VL4 2
The Vertex Laser VL402 is a high quality measuring instrument, useful for anyone who needs reliable, fast and
accurate distance-, height- or angle- measuring results. The instrument combines the roven accurate and safe
measuring methods of laser, ultrasound and a tilt sensor into a small, flexible and unique roduct.
G N RAL INFORMATION: TH V RT X LAS R INSTRUM NT
The Vertex Laser instrument uses laser or ultrasound technology to calculate distance and a high quality tilt
sensor to measure angles. The different measuring methods can be used individually or combined with each
other. The choice of measuring method and technology is up to the operator. In general terms, the ultrasound
method offers more precise results for shorter distances, whereas the laser method will allow longer
distance measuring and a quick presentation of measuring results without having to use a transponder.
Data on heights, distances and angles can be transferred through a built-in Infrared transmitter to a PC or HHC,
for storage and further processing. For transfer of results, a serial IR receiver is available as an optional
accessory to the instrument. Model VL402 also has built-in Bluetooth for transfer of results.
The Vertex ultrasound method uses ultrasonic signals to obtain the exact distance from the measuring
instrument to the T3 transponder. The height is calculated trigonometrically through the distance and the
angle.
The T3 transponder is used when measuring with the Vertex ultrasound technology. The T3
transponder can also be used as a visible reference point when measuring with Laser technology.
The T3 Transponder works both in a 60º mode for direct height measuring, for example pinned
directly to a tree stem; or in a 360º mode when set onto the plot centre staff (art no CPIN), an ideal way to
work when measuring in circular sample plots with the Vertex Ultrasound measuring technique.
The ultrasound measuring technology works also when and if the target is not visible, as in completely or
partially covered. The Vertex ultrasound is very useful when working in circular sample plots, and if the
reference point (centre of plot) is covered by dense vegetation, trees or bushes. When measuring the angle to
the reference point, the horizontal distance can be presented.
Working with relaskopes or prism sometimes offers difficulties if the underbrush is too thick. Poor sighting will
prevent a correct diameter evaluation. With the Vertex Laser instrument’s built in BAF function (Basal Area
Function), the minimum tree diameter for trees to be included in the plot can be featured, when measuring the
distance from the tree to the reference point/plot centre, using the Vertex ultrasound method.
The Laser part of the VL402 instrument emits invisible, eye safe infrared energy pulses that reflect off the
selected target back to its optical receiver. The laser is classified as Class 1 (USA and Canada) and as Class 3a
(EC and other countries). By measuring the time it takes for each pulse to travel from the rangefinder, to the
target and back with sophisticated precision charge circuitry, the instrument instantly calculates distances. The
maximum range of the Laser measuring method depends on the target’s reflectivity, its colour, surface, finish,
shape and size.

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 7
M NU
8x magnification Laser
aim and Laser display
1 x magn. Vertex aim
Shift
button
Vertex Display
Ultrasound
Power
button
Mode button
IR interface
Battery
indicator
VERTEX
LAS R
H IGHT 2P
L
VERTEX
LAS R
S TUP
VERTEX
LAS R
DISPLAY
VERTEX
LAS R
H IGHT 3P
VERTEX
LAS R
ANGL
VERTEX
LAS R
H IGHT 2P
HAGLÖF
HAGLÖF
HAGLÖF
HAGLÖF
HAGLÖF
HAGLÖF
VERTEX
LAS R
CALIBRAT
HAGLÖF

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 8
M TRIC D G
P.OFFSET .3
R F.HGT 1.3
M.DIST 025.0
DM DIAM T R
MEASURING
BAF 2
S T M OR YRD
POW R ON AND
PRESS (MODE) TO
CHANGE
VERTEX
LAS R
S TUP
HAGLÖF
S TUP
1. Press MOD to turn the instrument ON.
2. Select menu S TUP and press the MOD button.
3. Select distance and height unit by pressing the SHIFT button. Confirm by pressing
MOD . Note! The selected unit is used in the Vertex Laser independent of which unit has
been chosen in the Laser (see point 9).
4. Select Angle unit as D G (degrees), GRAD (gradients) or % (percentage) by pressing
SHIFT. Confirm by pressing MOD .
5. Set the P.OFFS T with SHIFT and MOD . A cursor appears under the digit. Use the
SHIFT button to increase this digit. Confirm the digit by pressing MOD . Repeat for the
next digit until the Pivot Offset is set.
6. Set the R F.HGT
7. Set M.DIST (manual distance)
8. Set the BAF factor for minimum diameter with Ultrasound. Following factors are supported:
--, 0.5, 1, 2, 3 (m
2
/ha)
Alternatively
--, 5, 10, 15, 20 (ft
2
/acre)
9. Select the distance unit in the Laser display. The unit shown in the Laser aim will not necessarily
coincide with the unit shown in the display. Any transferred information will be identical to the
information shown in the display. Start the Laser by pressing POW R and select unit as m or Yard by
depressing the Mode button. The selected unit is featured in the Laser display. Step out of this menu
by pressing both SHIFT and MOD .
P.OFFS T
The Pivot Offset is the distance from the Vertex Laser instrument front to the virtual intersection
point behind the instrument. The normal P.OFFS T is 0.3m/1.0ft.
0.3m

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 9
DM
24C
75F
Ø 30.0
15. M
R F.HGT
The transponder height, the eye height or any other reference height equals the distance from the
ground to a reference point. In most cases, the R F.HGT would equal the centre of the T3
transponder or other visible reference point. If the reference point is the ground, or the objects
lowest point, R F.HGT should be set at zero (0). R F.HGT is always added to the height when
measuring distance with ultrasound. R F.HGT is not used when measuring with laser except when
using the one-shot method. Then the reference height (R F.HGT) should equal your eye height.
Normal height to set the Transponder T3 is at 1.3m (breast height).
M.DIST
Setting a Manual Distance can be useful if a distance is already known (fixed distances between for
example poles) or when neither Laser nor Ultrasound can be used for distance measuring for certain
reasons – if, for example, larger objects cover the target object.
NOT ! The accuracy of a manually entered distance affects the height accuracy!
BAF
Working with relaskopes or prisms can sometimes offer difficulties when in the
forest some trees cover others. The poor sighting can prevent a correct
diameter measuring. With the Vertex built in BAF function, the minimum tree
diameter for trees to be included can be featured. To use, measure the distance
from the tree to the reference point with the Vertex Ultrasound method. The
result will be the minimum diameter the tree must be to be included based on
the set BAF-factors.
S L CT TH DISTANC UNIT IN TH LAS R
1. Press MOD to turn the instrument ON.
2. Select menu S TUP and keep pressing the MOD button until the last screen appears; S T M or YRD.
3. Start the Laser by pressing POW R and select unit as M (meter) or YRD (Yard) by keeping the MOD button
depressed. The selected unit is featured in the Laser aim. Step out of this menu by pressing both SHIFT and
MOD .
NOT ! This setting shown in the Laser aim does not affect the setting in the Vertex Laser instrument, where m
or feet is used and shown in the display.

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 10
BUTTONS
SHIFT BUTTON
The SHIFT button is used when measuring distances with ultrasound, and
to change menus or variables. SHIFT is also used to increase or decrease
the intensity of the Vertex aim.
MOD BUTTON
The MOD button is used when measuring angles, and works as NT R,
to execute commands in the menu. The MOD button is also used to
activate IR transfer of data.
Use the MOD button to select the Laser distance setup ( nglish or Metric). To switch unit in the Laser (aim),
select S TUP menu and S T M OR YRD (last menu in S TUP). When in this menu, keep the MOD button
pressed down to switch between m or Yard. This measuring unit is only used in the Laser 8-time magnification
aim and has no validity in the Vertex Laser display, where metric or feet is featured and used. Any transferred
results will be the ones featured in the VL402 display.
POW R BUTTON
Press POW R to start the Laser. To start a measuring operation using Laser,
press POW R again. Keep the POW R button depressed until a short beep
goes off and the Laser performs a scanning measuring operation. This function is
useful to obtain more correct result when measuring thin targets (power lines).
The Laser has an automatic turnoff time of 8 seconds of inactivity.
MOD +SHIFT BUTTONS
Press both MOD and SHIFT buttons to step out of a menu and to turn the Vertex Laser instrument OFF.
V RT X AIM
The Vertex red dot cross hair aim has a 1 x magnification, with a highly visible red aim point sight. This sight is
preferably used for close range targets.
The intensity of the Vertex aim is user adjustable. Press Shift when measuring a height or an angle to increase
intensity of the cross hair.
LAS R AIM
The Laser aim point is often used for distant targets. With an 8 x magnification, the laser aim
is perfect for thin objects, for example power lines. The 8 x magnification makes it useful also
if a target object is located close to other objects. Adjust the Laser aim sharpness by turning
the adjustment ring around the Laser sight until desired sharpness.

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 11
HEIGHT MEASURING WITH VL4 2
M ASURING H IGHTS
The Vertex Laser instrument offers several different measuring methods for accurate height
measuring:
One shot: Distance and angle to an optional part of the object measured with laser.
To be able to work with this method, you need to be on the same level as
the bottom of the object to measure.
HEIGHT 3P: Distance and angle to optional part of the object measured with laser. The angle
is measured at the lowest and the highest part of the object.
HEIGHT 2P: Distance and angle, to a reference point, measured with laser or ultrasound and a
transponder/target. The top angle is measured.
HEIGHT 2PL: Distance and angle to the bottom and to the top measured with laser. The
method is ideal for leaning objects.
Useful and important knowledge: the Vertex Laser uses two additional variables when calculating a
height. Those variables can be changed if necessary in the S TUP menu.
P.OFFSET: Distance from the Vertex Laser front to the intersection point.
REF.HGT: The transponder height, the eye height or any other reference height equals the
distance from the ground to a reference point. In most cases, the R F.HGT would
equal the centre of the T3 transponder or other visible reference point. If the
reference point is the ground, or the objects lowest point, R F.HGT should be set
at zero (0). R F.HGT is always added to the height when measuring distance with
ultrasound. R F HGT is not used when measuring with laser except when using the
one-shot method. In these cases, the reference height (R F.HGT) should equal your
eye height. Normal height to set the Transponder is at 1.3m (breast height).

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 12
HD
SD
H
R F.HGT
SD 15.8
HD 14.8
H 2.3
DEG 8.6
DISTANC AND H IGHT M ASURING WITH LAS R
1. Press POW R to turn the Laser ON.
2. Aim and press POW R to measure with Laser.
The Vertex Laser instrument indicates with a short signal when a measuring result has been
completed. The display features distance, horizontal distance, angle and height above horizontal
plane (R F.HGT included).
Press both MOD and SHIFT buttons to step out of a menu and to turn the Vertex Laser OFF.
Use R F.HGT to add the distance from ground to eye to get the target’s total height from the ground
to the measuring point.
P. OFFS T should be set to 0.1 m/0.3 ft
Objects that are far away or thin (power lines) can be difficult to visualize and to obtain measuring
results from. With the Laser scanning function, activated when pressing the Power button, the best
measuring result can be achieved. Press and keep POW R depressed until a beep signal indicates
that a result has been measured and is featured in the VL402 display. When pressing the Power
button, the VL402 searches for the correct angle to the measuring object. Once this is obtained, this
signal is given and the height is calculated and displayed. This implies that you need to await the
signal to go off to get the horizontal distance – and to get accurate results.
DISTANC M ASURING WITH ULTRASOUND
Make sure that the Vertex Laser is OFF. Start the T3
transponder by holding the ultrasonic element close to
the transponder center and press SHIFT. Wait for two
short beeps from the transponder. The T3 transponder
is now ON and stays ON (=activated) for approximately
20 minutes.
To turn the T3 transponder OFF, repeat the “ON”
procedure. Four beeps indicates that the Transponder is “OFF”.

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 13
VERTEX
LAS R
H IGHT 3P
SD 21.5
HD 21.4
H -1.7
D G -4.6
SD 21.5
HD 21.4
D G -4.6
H 19.3
BOTTOM
D G -20.8
HAGLÖF
Ultrasonic ulses are attenuated differently with varying tem erature, humidity, and atmos heric
ressure. In o en terrain without obstacles between the instrument and with the 60 ْ trans onder, a
range of 30m/100 ft or more can be obtained. (For details on the T3 trans onder, lease see age 6 in
this manual.)
Calibration of the Vertex ultrasound unit should be made in current correct temperature to get
highest possible precision. The speed of sound in air depends on several factors, but primarily on
temperature. A built-in sensor is automatically compensating for changes in temperature. The
instrument has a default calibration that will typically result in a distance error less than 1%. To
obtain best accuracy it is recommended, however, to check and if necessary recalibrate the
instrument at regular intervals -e.g. once a day.
For details on the calibration rocedure, lease see age 16 in this manual.
H IGHT 3P WITH LAS R
1. Press POW R to start the Laser (alternatively, turn the Vertex Laser ON by pressing
MOD and choose menu H IGHT 3P and confirm your choice with MOD ). The VL402
has a built-in energy saving function. If your measuring o eration does not start from
this oint within just a few seconds, the Laser has to be reactivated with a short ress
on POWER.
2. Aim at the centre (or other measuring point of your choice) and give a short press on
POW R to get the distance and angle. Aim until a short beep goes off. The slope
distance (SD), the horizontal distance (HD), the height (H) and the angle (D G) are
featured in the display.
3. Aim at the bottom of the target object or other reference point of your choice. Keep
pressing MOD down until a beep goes off. Now release the MOD button.
4. Aim at the top of the object or other measuring point of your choice and keep MOD pressed
down until another beep goes off. Now release the MOD button.
The height between the three (3) measured points and other data are now featured in the display.
More heights on the same target object can be measured by repeating point 4 above.
Press both MOD and SHIFT to step out of a menu and to turn the Vertex Laser OFF.

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 14
VERTEX
LAS R
H IGHT 2P
M.DIST 25.0
DME(MODE)
LASER(POWER)
SD 15.0
HD 14.9
H -1.9
D G -7.3
SD 15.0
HD 14.9
D G -7.3
H 20.3
HAGLÖF
VERTEX
LAS R
H IGHT 2P
M.DIST 25.0
DME(MODE)
LASER(POWER)
SD 25.0
HD 24.6
D G -10.6
H 20.1
DM
24C
75F
25. M
HAGLÖF
H IGHT 2P LAS R WITH TRANSPOND R/TARG T
1. Press MOD to turn the instrument ON.
2. Select menu H IGHT 2P and confirm choice by pressing the MOD button.
3. Turn the Laser ON by pressing POW R.
4. Aim at the T3 transponder (or other reference point) and press POW R to get the
distance and angle to the object. Aim until a short beep goes off. Slope distance (SD),
horizontal distance (HD) height (H) (R F.HGT included) and angle (D G) are featured in
the Vertex Laser display.
5. Aim at the top of the target object and keep MOD pressed down until a beep goes
off. Now release the MOD button. SD, HD, D G, and H are displayed.
More heights on the same target object can be measured by repeating point 5 above.
To measure heights of a new target object, repeat from point 4 above, and use the
H IGHT 3P method (see description above).
H IGHT 2P WITH ULTRASOUND
1. Make sure that the T3 transponder is ON and
position it at the reference point, defined by R F.HGT.
2. Press MOD to turn the Vertex Laser instrument ON.
3. Select menu H IGHT 2P and confirm choice by pressing the MOD button.
4. Aim at the T3 transponder with the Vertex sight and press MOD until a short beep
goes off. Release the MOD button. Distance and angle are now featured in the display.
5. Aim at the top of the target object and keep MOD pressed down until a beep goes
off. Now release the MOD button.
SD (Slope Distance), HD (Horizontal Distance), D G (Angle), and H (Height) (R F HGT
included) are now featured in the display. More heights on the same target object can be
measured by repeating point 5 above.
Press both MOD and SHIFT to step out of a menu and to turn the Vertex Laser OFF.

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 15
VERTEX
LAS R
H IGHT 2P
M.DIST 25.0
DME(MODE)
LASER(POWER)
SD 25.0
HD 24.6
D G -10.6
H 20.1
HAGLÖF
VERTEX
LAS R
H IGHT 2P
SD 15.5
HD
H
D G -1.4
SD 15.5
SD 16.0
D G 13.0
H 3.7
SD 16.0
HD
H
D G 15.4
HAGLÖF
H IGHT 2P MANUAL DISTANC
1. Press MOD to turn the instrument ON.
2. Select menu H IGHT 2P and press the MOD button to confirm your choice.
3. Accept the manual distance now shown in the display by a quick press on the MOD
button. If the manual distance shown in the dis lay needs to be changed, this should
first be done in the Setu menu (see g 8 this manual).
4. Aim at the reference point set at a known height (Setu menu, g8) or at ground
level (0) and press MOD to get the correct angle to the object. Aim & press MOD
until a short beep goes off. Now release the MOD button.
5. Aim at the top of the object (or other point of your choice) and keep MOD pressed
down until a beep goes off. Now release the MOD button.
Height (R F.HGT included) and other data are featured in the display. More heights on the same
object can be measured by repeating point 5 above.
Press both MOD and SHIFT to step out of a menu and to turn the Vertex Laser OFF.
NOT ! The accuracy of the entered manual distance and reference height affects the height
accuracy!
H IGHT 2PL LAS R 2-POINT M ASURING
1. Press MOD to turn the instrument ON.
2. Select menu H IGHT 2PL and confirm your choice
by pressing MOD again.
3. Turn the Laser ON by pressing POW R.
4. Aim at the bottom of the target (or other reference point) and give a short press on
POW R to get the distance and the angle to the object. Aim until a short beep goes off
and the red cross reappears in your aiming sight again.
5. Aim at the top of the target or other measuring point and give a short press on
POW R to get the distance and angle. Keep aiming until a short beep goes off.
Height (R F.HGT not included) and other data are now featured in the display.
Press both MOD and SHIFT to step out of a menu and to turn the Vertex Laser OFF.

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 16
VERTEX
LAS R
ANGL
D G 15.4
HAGLÖF
DM
24C
75F
HDIST
27. M
VERTEX
LAS R
ANGL
D G 15.4
ANGL M ASURING
1. Press MOD to turn the instrument ON.
2. Select menu ANGL and press MOD to confirm your choice.
3. Aim and keep MOD until a beep goes off. Release the MOD button.
The angle is now featured in the display (D G).
Press both MOD and SHIFT to step out of a menu and to turn the Vertex Laser OFF.
HORIZONTAL DISTANC WITH ULTRASOUND
1. Press MOD to turn the instrument ON.
2. Select menu ANGL and press the MOD button to confirm your choice.
3. Aim at the T3 transponder with the Vertex 1x magnification sight and keep MOD pressed
down until a beep goes off. Release the MOD button.
4. Give a short press on the SHIFT button to measure the horizontal distance (HDIST)
to the transponder. Read the measured result in the display.
Press both MOD and SHIFT to step out of a menu and to turn the Vertex Laser OFF.
Please also turn to age 12 and in this manual for details on Ultrasound measuring.
CALIBRATION OF ULTRASOUND
1. Make sure that the instrument has adjusted to current working temperature.
2. Turn the T3 transponder ON and place the centre of the transponder 10m/32.8ft away from
the Vertex Laser front.
3. Turn on the VL402 with MOD . Aim the Vertex Laser at the transponder and select menu
CALIBRAT . Confirm your choice with MOD .
When the number 10.00 appears in the display, the instrument is ready and calibrated.
It is im ortant that the tem erature sensor is given enough time to correctly determine the ambient
tem erature. If you are carrying the instrument in your ocket you might have to allow u to 10 minutes before
you can obtain best accuracy
An exam le: Your inner ocket holds +15C/60F. Outdoor air tem erature is -5C/23F. The measurement result
will show 10,40m/34.12Ft and not the correct 10,00m/32.81Ft.
The measurement inaccuracy pending on temperature is approximately 2 cm/C°.
The error will decrease ra idly, but the final accuracy might take u to 10 minutes to achieve. Taking this into
account, calibrating the instrument before the sensor has had time to stabilize will make the error “ ermanent”.
The dis lay will then show the correct 30.0ft for a short while, but a few minutes later the measurements will be
inaccurate.
Never calibrate your instrument before it has stabilized at ambient temperature!!
Press both MOD and SHIFT to step out of a menu and to turn the Vertex Laser OFF.

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 17
D LTA H IGHT
The Delta Height Function is used to calculate the height difference of a point at an imagined straight line
between two fixed positions, and a third point, for example at a power line, where the line sag is closest to the
ground. (More details at next page)
1. Go to the position where the line sag is closest to ground. Measure H1 using the 1-point laser method.
2. Measure H2 using the 1-point laser method
3. Accept H1 and H2 and H by pressing Mode. H is the calculated height to the point above the power line.
4. Measure the height h to the power line using the 1-point laser method.
The Delta Height (H-h) is calculated and featured in the display.
D LTA H IGHT FUNCTION
The Delta Height Function is used to calculate the height difference of a point at an imagined straight line
between two fixed positions, and a third point, for example at a power line, where the line sag is closest to the
ground.
INSTRUCTIONS
The Delta Height Function calculates the difference between two heights. The function R F. H IGHT in the L402
Laser is therefore not so important in this case.
Always stand in a perpendicular position at the point where the Delta Height is measured.
Delta H
OK

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 18
The Delta Height Function uses the horizontal distances and the heights from the two fixed positions to
calculate the height to the point at the (imagined) straight line. If this point is not located in the middle of these
two fixed positions, the importance of standing closely increases.
OK
O
K

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 19
XAMPL
1. Go to the position where the line sag is closest to ground. Measure H1 using the 1-point laser method.
2. Measure H2 using the 1-point laser method
3. Accept H1 and H2 and H by pressing Mode. H is the calculated height to the point above the power line.
4. Measure the height h to the power line using the 1-point laser method.
The Delta Height (H-h) is calculated and featured in the display.
H2
H
h

Vertex Laser VL402 V1.1 enu
© Haglöf Sweden AB 2010 20
HAZARD TREE LIMIT: FUNCTION IN THE VL4 2 TO CALCULATE SECURITY DISTANCE
The VL402 V1.1 includes a useful function to calculate minimum distance from a tree top to, for example, a
power line, given the scenario that the tree could fall or be cut down. The function is called TR LIMIT in the
VL402.
Note that it is recommended to work with a security margin, given that the measurements include uncertain
factors that will affect the results. Certain calculations will presume that the object, for example a tree, is
standing straight when measuring a height. Trees that are leaning in the opposite direction from the operator’s
position will be given a lower height measurement value, with certain functions in the VL402. Other factors of