Velleman DVM85 - Manual (Page 4)

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.