Operation - Trotec SL400 Operating Manual

Operation

Inserting the battery
Insert the supplied battery before first use.
Note
Make sure that the surface of the device is dry and the
device is switched off.
1. Open the battery compartment at the rear of the device by
loosening the screw at the cover.
2. Use the battery clip to connect the 9 V battery with correct
polarity.
3. Place the battery with the battery clip into the battery
compartment.
4. Reattach the cover to the battery compartment.
5. Retighten the screw at the battery compartment.
Switching the device and performing measurements
Info
Please note that moving from a cold area to a warm
area can lead to condensation forming on the device's
circuit board. This physical and unavoidable effect can
falsify the measurement. In this case, the display
shows either no measured values or they are incorrect.
Wait a few minutes until the device has become
adjusted to the changed conditions before carrying out
a measurement.
Info
Please note that the measurement of a sound source
always has to be carried out directly. There must be no
objects or persons located in between the microphone
and the sound source, unless their influence on the
sound intensity is to be measured on purpose as well.
EN
1. Press the Power button (4) for approx. 2 s.
ð The display (6) is switched on and the device is ready
for operation.
ð The current measured value is displayed in the
measurement value display (23).
2. Point the device at the sound source to be measured.
ð Wait for a moment to achieve a stable measured value.
Setting the measuring range
The device has different measuring ranges which can be
selected as needed or according to the expected sound level. If
the expected sound level range is a known factor, one should
always select the corresponding measuring range whenever
possible, since this permits an optimum resolution of the
scale (21) at all times.
• Lower measuring range: 30 to 80 dB
• Medium measuring range: 50 to 100 dB
• Upper measuring range: 80 to 130 dB
• Auto: 30 to 130 dB
Please proceed as follows to set the measuring range:
1. Repeatedly press the LEVEL button (10) until the desired
measuring range is displayed on both ends of the scale
(20 and 33).
ð The scale will be adjusted automatically.
ð The UNDER (15) or OVER (18) indication will be
displayed, if applicable. If so, you should adjust the
measuring range further.
Measured curve setting (dBA / dBC)
You can choose whether your measured values are to be
displayed according to dB(A) or dB(C).
Please proceed as follows to set the measured curve:
1. Repeatedly press the A/C button (8) until either dB(A) or
dB(C) is displayed in pos. 26.
ð The measured value will be adjusted automatically.
Setting the MIN / MAX function
By use of the MAX/MIN function you can retain either the
highest or the lowest value of the current measurement. Please
proceed as follows to set the MAX/MIN function:
1. Press the MAX / MIN button (7).
ð The MAX indication (34) appears on the display.
ð The measured value display (23) will be frozen and
changes only if a new higher value is measured.
2. Press the MAX / MIN button (7) again.
ð The MIN indication (16) appears on the display.
ð The measured value display (23) will be frozen and
changes only if a new lower value is measured.
3. Press the MAX/MIN button (7) again to quit using the MAX/
MIN function.
digital sound level meter SL400 7