Setting Parameters; Use Of The Equipment - 3B SCIENTIFIC PHYSICS SPL 1012741 Manual De Instrucciones

can be "woken up" quickly by pressing any of the
configuration buttons.
The SPL noise meter can be powered by connecting it to
a USB port on a computer or can alternatively get its
power from a plug-in supply.
The supply voltage may not exceed a maximum of
= 6.0 V.
Applying a voltage that is too high can lead to a failure
of the indicator. If a power supply other than that
supplied is used, it must be ensured that the output
voltage from that supply never exceeds 6.0 V
The "power supply" warning indicator flashes red
when the power supply voltage is higher than 5.5 V.
It remains on a constant red if the supply voltage is
too low.
The noise meter can either be used mounted on a
wall or free-standing on a desk or table. Its well
design compact construction also makes it easily
portable.
Note : the SPL noise level indicator contains sensitive
electronics for detecting very small signals from the
microphone. Electromagnetic radiation can interfere
with the equipment, e.g. mobile telephones can cause
it to register higher noise levels than usual when they
are searching for a network or establish-ing a
connection and are less than about 30 cm from the
device. The display will return to the correct level as
soon as the electromagnetic interference is no longer
present. This phenomenon has no adverse effect on
the overall lifespan of the indicator.
2. Supplied components
1 Noise level indicator
1 Stand
1 USB/miniUSB cable
1 USB plug-in power supply
1 Transport case
3. Technical data
Display:
Measuring range:
Resolution:
Frequency evaluation:
Time evaluation:
Threshold for colour
coding:
Power supply:
Current consumption:
USB power supply:
Dimensions:
Weight:
max
U
100 mm diam. with LED
40 dB to 130 dB
1 dB
A
SLOW
can be set in steps of 1 dB
5 V DC via miniUSB socket
150 mA (measuring mode)
<1 mA (stand-by)
100 – 240 V, 50/60 Hz
130x145x12 mm
3
280 g approx. (not includ-
ing stand)

4.1 Setting parameters

The threshold for switching over the colour-coded
display can be set to any level within the measuring
range of the equipment. The brightness of the dis-
play can be set to one of ten levels from 0 (off) to 9
(maximum).
Parameters are set with the help of the configuration
buttons, "SET" and "+/-". The "SET" switches to the
next parameter while the "+/-" buttons increase or
decrease the actual setting. The buttons can be op-
erated with a thin pen or similar.
About 5 seconds after the last press of a configura-tion
button, the device will automatically revert back to
measuring mode.
The set values are permanently saved and are kept even
if the device is turned off.
4.1.1 Setting noise threshold

To set the noise threshold for changing the col-our
display, press the "SET" button once.
The display will begin to flash between red and green
while the digital display indicates the current noise
threshold.

The threshold can be set to the desired value with
the help of the "+/-" buttons.
4.1.2 Setting brightness of the colour display

To set brightness of the colour display, press the
"SET" button again (pressing twice from the
measuring mode goes to the "green" setting and
three times goes to the "red" setting).
In the relevant setting mode, the colour-coded indi-
cator will be displayed as either red or green. The
display also shows the letter "G" for green or "R" for
red as well as the current brightness level.

The brightness can then be set to the desired level
with the help of the "+/" buttons.
4.1.3 Setting brightness of the digital noise level
display

To set brightness of the digital noise level dis-play,
press the "SET" button again (four times al-together
from measuring mode).
The colour-coded display will be turned off and the letter
"D" for display will be shown along with the current
brightness level.

Set the brightness to the desired level as above.

Pressing one more time reverts the device to
measuring mode and it also returns to that mode
automatically after a 5 second delay.

4.2. Use of the equipment


Handle the noise level indicator carefully and do not
subject to severe mechanical stresses or di-rect
sunlight.

Do not immerse the device in water to clean.
Instead wipe it with a damp cloth, perhaps using
some soap or screen cleaner.
2
4. Operation