Activating the
Bluetooth®
interface for transmitting
data to a mobile device
The
Bluetooth®
interface is activated in the settings. To activ-
ate the
Bluetooth®
signal, press the button
(4)
[
+
]. Ensure
that the
Bluetooth®
interface is activated on your mobile
device.
The Bosch Measuring Master app is specially designed to ex-
tend the range of functions of the mobile device and make
data easier to process. This can be downloaded from the re-
spective store of the device.
The connection between the mobile device and the measur-
ing tool is established after the Bosch application has star-
ted. If multiple active measuring tools are found, select the
appropriate measuring tool using the serial number. You can
find the serial number
(15)
on your measuring tool's type
plate.
The connection status, as well as the active connection
(f)
,
are shown in the display
(1)
of the measuring tool.
Deactivating the
Bluetooth®
interface
The
Bluetooth®
connection is deactivated in the settings. To
deactivate the
Bluetooth®
signal, press the button
(11)
[
–
]
or switch off the measuring tool.
USB port
Data transfer via USB port
Data can be transferred from the measuring tool to certain
devices with a USB port (e.g. computer, notebook) via its
micro USB connection.
Connect the measuring tool to your computer or notebook
using the micro USB cable. The operating system on your
computer or notebook will automatically recognise the
measuring tool as a drive.
Note:
When the measuring tool is connected to a computer
or notebook via the micro USB cable, the Li-ion battery will
charge. The charging time varies according to the charging
current.
Practical advice
u
Further information can be found on the Bosch
product page.
u
The measuring tool is equipped with a wireless inter-
face. Local operating restrictions, e.g. in aeroplanes
or hospitals, must be observed.
General advice
The reception lens
(20)
, the laser beam output
(18)
and the
camera
(19)
must not be covered during measurement.
The measuring tool must not be moved while a measurement
is being taken. For this reason, place the measuring tool
against or on a firm surface whenever possible.
Influences on the measuring range
The measuring range depends on the lighting conditions and
the reflective properties of the target surface. For better vis-
ibility of the laser beam in strong extraneous light, use the in-
tegrated camera
(19)
, the laser viewing glasses
(26)
(ac-
cessory) and the laser target plate
(25)
(accessory) or
shade the target area.
Influences on the measurement result
Due to physical effects, the possibility of inaccurate meas-
urements when measuring various surfaces cannot be ex-
cluded. These include:
– Transparent surfaces (e.g. glass, water)
– Reflective surfaces (e.g. polished metal, glass)
– Porous surfaces (e.g. insulating materials)
– Structured surfaces (e.g. roughcast, natural stone).
If necessary, use the laser target plate
(25)
(accessory) on
these surfaces.
Inaccurate measurements are also possible where the laser
is pointed at target surfaces diagonally.
Layers of air at different temperatures and indirectly re-
ceived reflections can also influence the measured value.
Checking accuracy and calibrating the grade
measurement (see figure H)
Regularly check the accuracy of the grade measurement.
This is accomplished by means of a reverse measurement.
To do this, lay the measuring tool on a table and measure the
inclination. Turn the measuring tool by 180° and measure
the inclination again. The difference between the displayed
values must not exceed 0.3°.
In case of greater deviation, the measuring tool must be re-
calibrated. To do so, select
in the settings. Follow the
directions on the display.
We recommend that you perform an accuracy check and if
necessary a calibration of the measuring tool after extreme
temperature variations and after impact to the tool. After a
temperature variation, the measuring tool must acclimatise
for a while before calibration is performed.
Accuracy check of the distance measurement
You can check the accuracy of the measuring tool as follows:
– Choose a measuring section of approx. 3 to 10 m in
length that is permanently unchanged, the exact length of
which is known to you (e.g. room width, door opening).
The measurement should be performed under favourable
conditions, i.e. the measuring section should be indoors
with weak backlighting and the target area of the meas-
urement should be smooth and reflect well (e.g. a white-
painted wall).
– Measure the section ten times in succession.
The deviation of the individual measurements from the mean
value must not exceed ±2 mm over the entire measuring sec-
tion in favourable conditions. Record the measurements in
order to be able to compare the accuracy later on.
English |
31
Bosch Power Tools
1 609 92A 4F4 | (22.10.2018)
Summary of Contents for GLM 120 C Professional
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