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Idiomas disponibles
Idiomas disponibles
1. Introduction
To all residents of the European Union
Important environmental information about this product
Important environmental information about this product
This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm the
This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm the
This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm the
environment. Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a
specialized company for recycling. This device should be returned to your distributor or to a local recycling service.
specialized company for recycling. This device should be returned to your distributor or to a local recycling service.
specialized company for recycling. This device should be returned to your distributor or to a local recycling service.
Respect the local environmental rules.
Respect the local environmental rules.
If in doubt, contact your local waste disposal authorities.
t, contact your local waste disposal authorities.
Thank you for buying the AVM2050! Please read the manual thoroughly before bringing this device into service.
was damaged in transit, don't install or use it and contact your dealer.
was damaged in transit, don't install or use it and contact your dealer.
The AVM2050 allows you to measure the sound level in virtually every acoustic environment (high or low frequency, high or
allows you to measure the sound level in virtually every acoustic environment (high or low frequency, high or
allows you to measure the sound level in virtually every acoustic environment (high or low frequency, high or
low sound levels, broadband, interrupted or continuous). It can be used to measure the noise level in factories, schools,
low sound levels, broadband, interrupted or continuous). It can be used to measure the noise level in factories, schools,
low sound levels, broadband, interrupted or continuous). It can be used to measure the noise level in factories, schools,
offices and airports, or to test the acoustics of studios, theatres and hi
or to test the acoustics of studios, theatres and hi-fi installations. The AVM2050
result readout, which allows swift measurements in any location.
result readout, which allows swift measurements in any location.
•
Battery level readout (see §4)
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7 selectable ranges: for 50 to 126dB measurements (se
: for 50 to 126dB measurements (see §5)
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RCA output: to connect the device to a hi
: to connect the device to a hi-fi installation or test equipment (see §6)
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Measuring frequency: fast / slow response: to measure sound peaks or average sound levels (see §
Measuring frequency: fast / slow response
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A & C weighting: for acoustic analyses and measurements (see §
: for acoustic analyses and measurements (see §8)
2. Safety Instructions
Keep this device away from children and unauthorized users.
Keep this device away from children and unauthorized users.
3. General Guidelines
Refer to the Velleman® Service and Quality Warranty
Velleman® Service and Quality Warranty on the last pages of this manual.
Keep this device away form rain, moisture, splashing and dripping
Keep this device away form rain, moisture, splashing and dripping liquids.
Keep this device away from dust and extreme heat.
Keep this device away from dust and extreme heat.
Protect this device from shocks and abuse. Avoid brute force when operating the device.
Protect this device from shocks and abuse. Avoid brute force when operating the device.
Protect this device from shocks and abuse. Avoid brute force when operating the device.
•
Familiarise yourself with the functions of the device before actually using it.
Familiarise yourself with the functions of the device before actually using it.
•
All modifications of the device are forbidden for safety reasons. Damage caused by user modifications to the device is not
of the device are forbidden for safety reasons. Damage caused by user modifications to the device is not
of the device are forbidden for safety reasons. Damage caused by user modifications to the device is not
covered by the warranty.
•
Only use the device for its intended purpose. Using the device in an unauthorised way will void the warranty.
Only use the device for its intended purpose. Using the device in an unauthorised way will void the warranty.
Only use the device for its intended purpose. Using the device in an unauthorised way will void the warranty.
•
Damage caused by disregard of certain guidelines in this manual is not covered by the warranty and the dealer will not
disregard of certain guidelines in this manual is not covered by the warranty and the dealer will not
disregard of certain guidelines in this manual is not covered by the warranty and the dealer will not
accept responsibility for any ensuing defects or problems.
accept responsibility for any ensuing defects or problems.
•
Do not switch the device on immediately after it has been exposed to changes in temperature. P
Do not switch the device on immediately after it has been exposed to changes in temperature. P
Do not switch the device on immediately after it has been exposed to changes in temperature. Protect the device against
damage by leaving it switched off until it has reached room temperature.
damage by leaving it switched off until it has reached room temperature.
4. Battery replacement
•
The AVM2050 requires one 9V battery. Alkaline batteries usually give better results and last longer.
requires one 9V battery. Alkaline batteries usually give better results and last longer.
requires one 9V battery. Alkaline batteries usually give better results and last longer.
•
Open the battery compartment and remove the old battery. Insert the new one. Mind the polarity.
•
To test the battery, put the RANGE selector to BATT: if the meter moves to the BATT TEST area, the battery is OK.
To test the battery, put the RANGE selector to BATT: if the meter moves to the BATT TEST area, the battery is OK.
To test the battery, put the RANGE selector to BATT: if the meter moves to the BATT TEST area, the battery is OK.
REMARKS:
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Set the RANGE selector to OFF when you are not using the AVM2050. That way the battery will last longer.
Set the RANGE selector to OFF when you are not using the
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Remove the battery when you will not be using the AVM2050 for a while.
Remove the battery when you will not be using the
5. Range
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Select 1 of the 7 measuring ranges (16dB per range) using the RANGE selector. The numbers refer to the zero point of
1 of the 7 measuring ranges (16dB per range) using the RANGE selector. The numbers refer to the zero point of
1 of the 7 measuring ranges (16dB per range) using the RANGE selector. The numbers refer to the zero point of
each of the 7 ranges. The pointer indicates the sound level compared to the reference value.
Selector
60dB
position
Measuring
50-66dB
range
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Example: when the RANGE selector is set to 80dB and the pointer points to -3, the sound level is 77dB.
Example: when the RANGE selector is set to 80dB and the pointer points to
6. Output
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You can connect the AVM2050 to recording or other equipment through the OUTPUT connector. For example: use an
audio cable to connect the device to an AUX or LINE input of a recorder.
audio cable to connect the device to an AUX or LINE input of a recorder.
•
Always bear in mind that the output signal is influenced by the internal filtering process.
Always bear in mind that the output signal is influenced by the internal filtering process.
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Set the RANGE selector to a value for which the maximum deviation of the meter is never more than +4 to prevent the
RANGE selector to a value for which the maximum deviation of the meter is never more than +4 to prevent the
RANGE selector to a value for which the maximum deviation of the meter is never more than +4 to prevent the
internal amplifier from removing the signal. Use the A weighting for recordings with voices and the C weighting for
internal amplifier from removing the signal. Use the A weighting for recordings with voices and the C weighting for
internal amplifier from removing the signal. Use the A weighting for recordings with voices and the C weighting for
entirely instrumental recordings. Connect the output with high impedance headphones, an oscilloscope, a frequency
analyzer or any other measuring instrument.
analyzer or any other measuring instrument.
7. Response Time
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The response switch has 2 positions: FAST and SLOW.
The response switch has 2 positions: FAST and SLOW.
FAST makes the meter react fast to sudden changes is the sound level. This position is ideal for peak measurement.
FAST makes the meter react fast to sudden changes is the sound level. This position is ideal for peak measurement.
FAST makes the meter react fast to sudden changes is the sound level. This position is ideal for peak measurement.
o
SLOW is used for average noise level measurements. Short sound surges have little effect.
SLOW is used for average noise level measurements. Short sound surges have little effect.
SLOW is used for average noise level measurements. Short sound surges have little effect.
o
19.08.2010
AVM2050
User manual
dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a
dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a
! Please read the manual thoroughly before bringing this device into service. If the device
! Please read the manual thoroughly before bringing this device into service.
: to measure sound peaks or average sound levels (see §7)
remove the old battery. Insert the new one. Mind the polarity.
remove the old battery. Insert the new one. Mind the polarity.
pointer indicates the sound level compared to the reference value.
pointer indicates the sound level compared to the reference value.
70dB
80dB
60-76dB
76dB
70-86dB
to recording or other equipment through the OUTPUT connector. For example: use an
to recording or other equipment through the OUTPUT connector. For example: use an
. Connect the output with high impedance headphones, an oscilloscope, a frequency
. Connect the output with high impedance headphones, an oscilloscope, a frequency
at way the battery will last longer.
90dB
100dB
80-96dB
90-106dB
3, the sound level is 77dB.
2
AVM2050 has an easily readable
110dB
120dB
100-116dB
110-126dB
©Velleman nv
Rev. 01
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