DVM85
05/05/2010
©Velleman
®
Components nv
4
4.
Features
•
max/min function
•
auto ranging: 40 ~ 130dB
•
auto backlight on/off
•
resolution: 0.1dB
•
auto power off
•
comes with: windscreen, battery, user manual
5.
Overview and use
Refer to the illustrations on page 2 of this manual.
1
windscreen and pick-up
element
4
light sensor
5
LCD display
2
MAX/MIN button
6
battery cover
3
power on/off button
7
tripod nut
6.
Operation
•
Press the power on/off button
[3]
to switch the sound meter on.
The display
[5]
immediately shows the sound level value (frequency
weighted dBA).
•
Point the pick-up element
[1]
towards the sound source to be
measured.
•
Press the MAX/MIN button
[2]
to hold the highest measured value
(MAX) on the display. Press the MAX/MIN button
[2]
again to hold
the lowest measured value (MIN) on the display.
•
To exit max/min mode, press and hold the MAX/MIN button
[2]
for
±2s. Note: maximum and minimum values are reset when the
sound meter is switched off.
•
The light sensor
[4]
continuously monitors the environmental light
conditions and switches the backlight automatically on when
necessary.
•
When measuring outdoors, the windscreen
[1]
should be placed
over the pick-up element to eliminate noise generated by wind.
•
In case longer measuring times are expected, consider mounting
the sound meter on a tripod (not incl.) using the tripod nut
[7]
.
7.
Battery
•
To replace the battery, remove the battery cover
[6]
by sliding it
downwards.
•
Detach the old 9V battery from the clip.
