Futech DISTY 120RC User manual

USER
MANUAL
250.120RC DISTY 120RC
EN ENGLISH
Manual
in your language?
Check the back cover

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OVERVIEW

3
CASE
1 Battery compartment
2 Micro USB socket
3 Measure / ON
4 Plus / Up (*)
5 Minus / Down (*)
6 Menu/Equal
7 Measuring modes
8 Camera
9 Digital bubble / Staking-out
10 Reference point / Timer
11 Records / Save
12 Clear / OFF
13 End piece
14 1/4” tripod connection
SCREEN
a Reference point setting
b Laser indicator
c Measuring mode
d Tilt angle
e Power supply
f Measuring mode: dimension
g Auxiliary display area: value + unit
h Major display area
i Unit of the major display
(*) It is possible that on your device the up and down arrows printed on the keys are swapped.
We apologise for the inconvenience.

4
SAFETY
Please read the complete safety instructions in
the booklet delivered with this device.
Use extreme caution when the laser beam is
turned on.
Do not let the beam enter your eyes, another
person’s eyes or the eyes of an animal. Be careful
that reections of the beam (on a reective sur-
face) do not strike your eyes.
LASER RADIATION
Class 2, Do not stare into beam
Do not aim the laser beam at any gas that may
explode.
DO NOT USE THE MICRO USB SOCKET [2] IN
COMBINATION WITH ALKALINE BATTERIES.
FIRST USE
Remove protective lms where applied.
Open the battery compartment [1] on the back
of the product and insert the recommended
batteries.
Type of battery: 3 x 1,2V AAA Ni-MH batteries
(recharcheable) or 3 x 1,5V AAA Alkaline batter-
ies (not recharcheable). Never use two types of
batteries at the same time!
Using the micro-USB socket [2] and the supplied
(micro-)USB cable you can charge the recharche-
able Ni-MH batteries. Don’t use the micro-USB
socket [2] in combination with Alkaline batteries!
Switch on the device by holding the Measure /
ON button [3] for 1 second. The screen lights and
the major interface is shown.
The product is turned off in two ways.
The product can be turned off by holding the
Clear / OFF button [12] for 3 seconds.
When not being used, the meter will be turned
off automatically after 150 seconds. This setting
can be changed in the menu.
SETTINGS
Enter the menu by pressing the Menu / Equal
button [6]. The settings menu will be visible.
Navigate in the menu using the Plus / Up [4] and
the Minus / Down [5] button.
Select the item you like to change pressing the
Menu / Equal button [6].
Change the value using the Plus / Up [4] and the
Minus / Down [5] button.
Press the Menu / Equal button [6] again to
conrm.
Repeat these steps to change other settings or
exit the Menu using the Clear / OFF button [12].

5
Backlight
Determine how long the display remains
fully lit after the last touch. After this time,
the display will dim.
5 seconds ~ 60 seconds
Laser Lasting
Determine how long the laser is activated
after activation without measuring.
20 seconds ~ 120 seconds
Auto Power OFF
Determine how long the device remains
switched on after the last manipulation.
After this time the device will turn itself
off.
100 seconds ~ 300 seconds
Tone
(De-)Activate the sound
Distance Unit
Choose the preferred unit to display the
measuring results.
0.000m
0.00m
0.0 in
In 1/32
0’ 00” 1/32
0.000
0.00
0.00 ft
Angle Unit
Choose the preferred unit to display angles.
° (degrees)
%
Calibration
NOTE
Calibration function may affect preci-
sion of the device! This item cannot be
adjusted in default mode. User need to
follow below steps to enter calibration.
· Turn off the device.
· Hold the Records / Save button [11] and
press the measure / ON [3] button short-
ly. The device will start-up.
· Release the Records / Save button [11]
after the start-up screen has disappeared.
The mainscreen is visible.
· Enter the menu and navigate to Cali-
bration like described above. Now the
Calibration function is free to enter.
- 0.009m ~ +0.009m

6
USAGE
REFERENCE POINT
Four different reference points can be used.
Front Middle (screw) Back End-piece
Different reference points can be chosen using
the Reference point / Timer button [10]. The Ref-
erence point setting [a] will be visible on screen.
MEASURING MODES
NOTE
These two operations can be done in all modes
below.
- To undo the last measurement, press the Clear
/ OFF button [12].
- To save the measured values/results, hold the
Records / Save button [11] for 1 sec.
For all Pythagoras measurements the user must
follow the instructions’ order strictly!
We recommend to mount the instrument on a
tripod with tilting head to increase the accuracy
of your measurement.
DISTANCE MEASUREMENT
(SINGLE / CONTINUOUS)
Single measurement
For a single measurement: press the Measure /
ON button [3] and focus on the target.
Press the Measure / ON button [3] a second time
for a single measurement.
The result is displayed in the Major display area
[h]. The previous 3 measurements are displaced
above in the auxiliary displays [g1, g2, g3].
Continuous measurement (minimum/maximum)
Hold the Measure / On [3] and focus on the
target point.
To know the minimum and maximum distance,
slightly move the focus left / right / up / down.
During measuring the actual maximum distance
is displayed in the auxiliary display area [g2],
the minimum actual distance is displayed in the
auxiliary display area [g1]. The mayor display area
[h] shows the actual distance measured during
continuous measuring.

7
Press the Measure / On button [3] again to end
the continuous measuring.
You can read the maximum measured distance in
the auxiliary display area [g2], the minimum actu-
al distance in the auxiliary display area [g1]. The
mayor display area [h] shows the last distance
measured.
AREA MEASUREMENT
Press the Measuring modes button [7] that num-
ber of times needed until the Area Measurement
symbol appears on the measuring mode area [c]
on the screen.
Measure the area in 2 steps:
Press the Measure / ON button [3] to
measure the  rst side
Length of side 1 appears on auxiliary
display area [g3]
Press the Measure / On button [3] a sec-
ond time to measure the second side
Length of side 2 appears on auxiliary
display area [g2]
The Major display Area [h] and it’s unit [i]
shows the result of the area calculation.
(m2)
VOLUME MEASUREMENT
Press the Measuring modes button [7] that num-
ber of times needed until the Volume Measure-
ment symbol appears on the measuring mode
area [c] on the screen.
Measure the Volume in 3 steps:
Press the Measure / ON button [3] to
measure the  rst side
Length of side 1 appears on auxiliary
display area [g3]
Press the Measure / On button [3] a sec-
ond time to measure the second side
Length of side 2 appears on auxiliary
display area [g2]
Press the Measure / On button [3] a third
time to measure the third side
Length of side 3 appears on auxiliary
display area [g1]
The Major display Area [h] and it’s unit [i]
shows the result of the volume calcula-
tion.

8
(m3)
PAINTER FUNCTION
This function can be used for example to know
the total area of all the walls in one room.
Press the Measuring modes button [7] that num-
ber of times needed until the Painter function
symbol appears on the measuring mode area [c]
on the screen.
Measure the Volume in 3 steps:
Press the Measure / ON button [3] to
measure the height of the room
The height appears on auxiliary display
area [g3]
Press the Measure / On button [3] a
second time to measure the  rst wall
Length of wall1 appears on auxiliary
display area [g2]
The Major display Area [h] and it’s unit [i]
shows the result of the area calculation.
(m2)
(height x wall1)
Press the Measure / On button [3] a third
time to measure the second wall
Length of wall2appears on auxiliary
display area [g1]
The Major display Area [h] and it’s unit
[i] shows the updated result of the area
calculation. (m2)
(height x wall1)+(height x wall2)
You can repeat this last step and continue meas-
uring additional walls for as long as necessary.
The height always remains visible in secondary
display [g3], the previously measured walls move
up one place each time. After each additional
wall measured, the Major display area [h] will
show the new, updated total area of all walls
measured.
SIMPLE PYTHAGORAS: TWO LEGS (BASED
ON HYPOTHENUSE AND ANGLE)
Only 1 measurement is needed. Pointing the
distance meter along the axis of interest (c),
the angle (α) and length of c will be calculated.
Press the Measuring modes button [7] that num-
ber of times needed until the “Simple Pythag-
oras” symbol appears on the measuring mode
area [c] on the screen.
Press the Measure / ON button [3] to
measure the length of the hypotenuse (c).

9
The angel (α) appears on auxiliary display
area [g3]
Length of Hypothenuse (c) appears on
auxiliary display area [g2]
The length of the horizontal side (a)
appears on auxiliary display area [g1]
The Major display Area [h] shows the
length of side (b).
PYTHAGORAS: SECOND LEG (BASED ON
HYPOTHENUSE AND ONE LEG)
Calculate the third leg, by measuring the hypoth-
enuse and base leg of a right (90°) triangle.
Press the Measuring modes button [7] that
number of times needed until the “Pythagoras,
second leg” symbol appears on the measuring
mode area [c] on the screen.
The device uses your measured values a and
b to determine the dimension of c. The device
assumes a triangle with a right angle (90°).
Press the Measure / ON button [3] to
measure the length of the hypotenuse (c).
The length of the hypotenuse (c) appears
on the auxiliary display area. [g2]
Press the Measure / ON button [3] a second
time to measure the length of one side (a).
The length of side (a) appears on the
auxiliary display. [g1]
The Major display Area [h] shows the
length of side (b).
PYTHAGORAS: HYPOTHENUSE (BASED
ON TWO LEGS OF A RIGHT TRIANGLE)
Calculate the hypothenuse (c) by measuring two
legs of a right (90°) triangle.
Press the Measuring modes button [7] that
number of times needed until the “Pythagoras:
Hypothenuse” symbol appears on the measuring
mode area [c] on the screen.
The device uses your measured values a and
b to determine the dimension of c. The device
assumes a triangle with a right angle (90°).
Press the Measure / ON button [3] to
measure the length of the  rst side (a).

10
The length of side (a) appears on the
auxiliary display area. [g2]
Press the Measure / ON button [3] a
second time to measure the second
length, side (b).
The length of side (b) appears on the
auxiliary display. [g1]
The Major display Area [h] shows the
length of the hypothenuse (c).
PYTHAGORAS: SUM OF 2 TRIANGLES
(BASED ON TWO LEGS AND DISTANCE)
Calculate the third side of a triangle by measur-
ing the other two sides and the altitude.
Press the Measuring modes button [7] that num-
ber of times needed until the “Pythagoras: Sum
of 2 triangles” symbol appears on the measuring
mode area [c] on the screen.
The device asks for the dimensions a, h & b. The
display always shows which dimension is asked. The
device calculates and displays the dimension of c.
Press the Measure / ON button [3] to
measure the length of the  rst side (a).
The length of side (a) appears on the
auxiliary display area. [g3]
Press the Measure / ON button [3] a
second time to measure the horizontal
distance (h).
The horizontal distance (h) appears on the
auxiliary display. [g2]
Press the Measure / ON button [3] a third
time to measure the second side (b).
The length of second side (b) appears on
the auxiliary display. [g1]
The Major display Area [h] shows the
length of third side (sum of 2 triangles)
(c).
PYTHAGORAS: SUBTRACTION OF
2 TRIANGLES (BASED ON
HYPOTHENUSE, AUXILIARY LINE AND
BASE LEG OF RIGHT TRIANGLE)
Calculate the length of the highlighted side by
measuring hypothenuse, auxiliary line and base
leg of the right (90°) triangle.
Press the Measuring modes button [7] that
number of times needed until the “Pythagoras:
subtraction of 2 triangles” symbol appears on the
measuring mode area [c] on the screen.

11
The device uses your measurements c, l1and a
(respectively) to determine the height l2.
Press the Measure / ON button [3] to
measure the length of the hypothenuse
(c).
The length of the hypothenuse (c)
appears on the auxiliary display area. [g3]
Press the Measure / ON button [3] a
second time to measure the auxiliary line
(l1).
The length of auxiliary line (l1) appears on
the auxiliary display. [g2]
Press the Measure / ON button [3] a third
time to measure the altitude (a).
The length of the altitude (a) appears on
the auxiliary display. [g1]
The Major display Area [h] shows the
length of (l2), the part between auxiliary
line (l1) and hypothenuse (c).
AREA OF AN IRREGULAR TRIANGLE
(BASED ON 3 SIDES)
Calculate area of an irregular triangle by
measuring the length of 3 sides.
Press the Measuring modes button [7] that num-
ber of times needed until the “Area of triangle”
symbol appears on the measuring mode area [c]
on the screen.
The dimensions of a, b & c are asked respec-
tively. The device calculates the total area of the
triangle.
Press the Measure / ON button [3] to
measure the  rst leg (a).
The length of leg (a) appears on the
auxiliary display. [g3]
Press the Measure / ON button [3] a sec-
ond time to measure the second leg (b).
The length of leg (b) appears on the
auxiliary display. [g2]
Press the Measure / ON button [3] a third
time to measure the third leg (c).
The length of leg (c) appears on the
auxiliary display. [g1]
The Major display Area [h] shows the area
of the measured triangle.

12
NOTE:
“ERR 5” will be displayed in the event that a
measurement contradicts the characteristics
of a triangle (e.g. c is shorter than b). The meas-
urement must be redone.
CALCULATION OPTIONS
ADDITION / SUBTRACTION DISTANCES
Add Subtract
Measure the distance as described above at ‘1.
Distance measurement, single measurement’.
To add a measurement
to this result, press the
Plus / Up button [4].
The result moves to the
auxiliary display [g2],
a + appears in front of
the major display area
[h]
To subtract a meas-
urement to this result,
press the Minus / Down
button [5]. The result
moves to the auxiliary
display [g2], a – appears
in front of the major
display area [h]
Measure the second distance as described
above.
The last measurement appears on auxiliary
display [g3], the result of the calculation will be
visible on the major display area [h]
➙ To add / subtract additional measurements,
just continue with the next measurement.
TIP
You can switch between Addition and Subtrac-
tion by pressing the Plus / Up button [4] (to add
a measurement) or the Minus / Down button [5]
(to subtract a measurement) just before meas-
uring an additional measurement.
ADDITION / SUBTRACTION OF AREAS
Add Subtract
Measure the area as described above at ‘2. Area
measurement’.
To add a measurement
to this result, press
the Plus / Up button
[4]. The result of the
previous measure-
ment disappears, a +
appears in front of the
major display area [h]
To subtract a meas-
urement to this result,
press the Minus / Down
button [5]. The result of
the previous measure-
ment disappears, a –
appears in front of the
major display area [h]
Measure the second area as described above.
The results of the new measurement will be
visible.
➙ Option 1: To add / subtract additional measure-

13
ments, just continue with the next measurement.
➙ Option 2: To see the result of all added /
subtracted area measurements, press the Menu /
Equal button [6].
TIP
You can switch between Addition and Subtrac-
tion by pressing the Plus / Up button [4] (to add
a measurement) or the Minus / Down button [5]
(to subtract a measurement) just before meas-
uring an additional measurement.
ADDITION / SUBTRACTION OF VOLUMES
Add Subtract
Measure the volume as described above at ‘3.
Volume measurement’.
To add a measurement
to this result, press
the Plus / Up button
[4]. The result of the
previous measure-
ment disappears, a +
appears in front of the
major display area [h]
To subtract a meas-
urement to this result,
press the Minus / Down
button [5]. The result of
the previous measure-
ment disappears, a –
appears in front of the
major display area [h]
Measure the second volume as described above.
The results of the new measurement will be
visible.
➙ Option 1: To add / subtract additional
measurements, just continue with the next
measurement.
➙ Option 2: To see the result of all added / sub-
tracted volume measurements, press the Menu /
Equal button [6].

14
TIP
You can switch between Addition and Subtrac-
tion by pressing the Plus / Up button [4] (to add
a measurement) or the Minus / Down button [5]
(to subtract a measurement) just before meas-
uring an additional measurement.
OTHER OPTIONS
MULTI-DIRECTION ELECTRONIC LEVEL
BUBBLE
Press the Digital bubble / Staking out button [9]
to enter the Multi direction electronic bubble.
The left-bottom side shows the vertical angle of
the device, the right bottom side the horizontal
angle of the device.
Press the Digital bubble / Staking out button [9]
again to exit the Multi direction electronic bubble.
DELAY MEASUREMENT
To delay a measurement, hold the Reference
point / Timer button [10].
The delay time is shown on the top of the screen
(in seconds). This value can be adjusted using
Plus / Up [4] or Minus / Down [5] button. Delay
times between 3 and 60 seconds can be chosen.
To start the delay measuring, press the Measure
/ On button [3] and the timer will start counting
down before measuring.
STAKING OUT
This function is used to measure positions with a
xed distance.
b
a
S
M
b
a
S: Staking out value. The distance to
the nearest, measured
from the start.
a: Value a Distance between
Start and the rst
target
b: Value b Distance between
two targets, except
start
M: Distance to the next target
(in the direction of the arrow)
Arrow:Shows the direction to the nearest step

15
Hold the Digital bubble / Staking-out button [9].
The staking out symbol appears as measuring
mode [c].
Use the Plus / Up [4] and Minus / Down [5]
button to set value a.
Con rm with the Measure / ON button [3].
Use the Plus / Up [4] and Minus / Down [5]
button to set value b.
Con rm with the Measure / On button [3].
Place the device in its start position. The device
measures continuously and shows in the Major
display area [h] the distance to the nearest
targets (M).
The arrow shows the direction to the nearest
target.
: Move forward
: Move backward
: Match the position
Example:
a
b
S
M
a
b
S
M
To exit the Staking out function, press the Clear /
OFF [12] button.
CAMERA
When you are not able to see the laser spot,
for example in very sunny weather or over long
distances, the build-in camera can be turned on
using the camera button [8] and help you to  nd
the laser spot.
V
L
F
R
L: Level angle
V: Vertical angle
F: Focus cross
R: Measuring result (in Mayor display area [h])
NOTE
Camera measuring assistant is only useful when
the distance is more than 10 meters.

16
Single distance measuring
Press the Camera button [8] to turn on the
camera in single measuring mode.
Make the cross, which is on the screen, point
exactly your target.
Press the measuring / ON button [3] to measure
the distance.
The result will be visible in the Major display area
[h].
Area / Volume / Pythagoras measuring
Choose the function you like to use with the
Measuring modes button [7].
Press the camera button [8] to turn on the camera.
Make the cross, which is on the screen, point
exactly your target.
Press the measuring / ON button [3] to acti-
vate the measuring tool, press the measuring
/ ON button [3] a second time to measure the
distance.
Press the camera button [8] to deactivate the
camera. The measuring result is now registered
and will be shown on the  rst Auxiliary display
line [g3]
Activate the camera again with the camera
button [8] to measure the second distance.
Make the cross, which is on the screen, point
exactly your target.
Press the measuring / ON button [3] to acti-
vate the measuring tool, press the measuring
/ ON button [3] a second time to measure the
distance.
Press the camera button [8] to deactivate the
camera. The measuring result is now registered
and will be shown on the second Auxiliary
display line [g2]
(Repeat this last step if your function requires a
third value. The result of this third value will be
visible on the third Auxiliary display [g1])
After measuring the last needed distance, deacti-
vate the camera. The result of the function will be
shown on the Mayor display area [h].
ANGLE VALUES ON TOP OF THE SCREEN
The device shows the tilt angle [d].
The range of this angle is always between -90.0°
and 90.0°.
The unit, which can be chosen in the settings,
is ° of % (slope).

17
TIPS
The device can be used with AAA batteries,
alkaline of NiMh rechargeable batteries.
ONLY IN CASE NiMH BATTERIES ARE USED,
you may charge this batteries using the Micro
USB socket [2] on the side of the device.
DO NOT USE THE MICRO USB SOCKET IN
COMBINATION WITH ALKALINE BATTERIES
You may get some warning information.
MESSAGE MEANING SOLUTION
ERR 1 Received signal
is too weak
Chose a surface
with a stronger
reectance or use
a reector
ERR 2 Received signal
is too strong
Chose a surface
with a weaker
reectance or use
a reector
ERR 3 Low Power Replace
(or recharge in case
of rechargeable
batteries) the
batteries
DO NOT
RECHARCHE
WHEN ALKALINE
BATTERIES
ARE USED
ERR 4 Fail of memorizer Please contact
the manufacturer
ERR 5 Pythagoras
measuring error
Please re-measure
ERR 6 Exceed the
measuring range
ERR 7 Fail of tilt Contact the
manufacturer

18
SPECIFICATIONS
250.120RC
DISTY 120RC
Working range ≤ 120 m
Smallest unit displayed 0,001 m
Measurement accuracy ± 0,002 m
Note: use a reector to increase the measurement range in case of too much
light/poor reective area.
Laser Class 2: 635 nm, < 1mW
Continuous distance measuring (tracking) Yes
Area/Volume/Pythagoras (simple & complex) Yes
Optional units m, inch, ft
°, %
Addition/Subtraction of measurements Yes
Maximum/Minimum values Yes
Staking-Out Yes
Delay measurements Yes
Self-calibration Yes
Angle of tilt ±90°
Multi-direction electronic level bubble Yes
Auxiliary sight (camera) Yes
USB-connector Yes
Storage temperature range -20°C < T < 60°C
Working temperature range 0°C < T < 40°C

19
250.120RC
DISTY 120RC
Batteries 3 x 1,2V AAA NiMH batteries (rechargeable)
or 3 x 1,5V AAA Alkaline batteries
Dimensions 130 x 56 x 29 mm
Weight 0,15 kg
Tripod connector ¼”
Dust-/waterproofness IP54
Typical Tolerance: ±2mm, when reectivity 100% (white surface), environment light <2000 LUX. 25 °C
Tolerance is usually affected by the distance, reectivity, and environment light etc. It probably gets
tolerance around ±( 2mm+0.2mm/m).

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