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Mini Bass Meter
User Manual
Sound pressure meter with voltmeter function
2018
SPL-Laboratory
01.01.2018
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Table of Contents
Table of Contents ............................................................................................................................ 2
Functions and technical features of the device ................................................................................ 3
Description ................................................................................................................................... 3
Ergonomics .................................................................................................................................. 3
Technical features ........................................................................................................................ 4
Working with the device.................................................................................................................. 5
Important safety information: ...................................................................................................... 5
Identifying the functional parts of the device: ............................................................................. 6
Button assignment ........................................................................................................................ 6
Hold mode .................................................................................................................................... 7
Service mode ................................................................................................................................ 7
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Functions and technical features of the
device
Description
Spl-Lab Mini Bass Meter is a new device for measuring sound pressure and voltage. This device
is, probably, the most compact SPL meter of those available on the market today. The
uniqueness of this device is in its capability of simultaneously measuring sound pressure and
voltage. At the same time, it is possible to capture sound pressure at the moment of reaching the
highest SPL value. The measured signal can be provided by both industrial equipment and
acoustic systems. The device is simple in use and does not require additional settings and
calibration. It is enough to simply connect the device to a car cigarette lighter for measuring
sound pressure and voltage. The device can be attached to the windshield of a car and the
measurements taken while driving. The Mini Bass Meter is completely autonomous, which
eliminates inaccurate readings.
Ergonomics
Spl-Lab Mini Bass Meter has a compact case, including a four segment display, 3 control
buttons, Mini-USB slot for power supply and updating the firmware and an input for connecting
to a cigarette lighter socket. The design of the device allows it to practically fit into any car
interior.
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Technical features
Completely autonomous
Bright green display
Includes portable Power Supply
Frequency range from 20 to 120 Hz
Amplitude range from 120 to 165 dB
Measuring voltage from 1 to 20 volt*
Calibrated according to TERM-LAB Classic and Magnum
Updatable software
Measured value of direct
current voltage
USB- 1-5 volts
12v In- 6-20 volts
Measurement accuracy
0.1 dB, 0.1 volt, 1 Hz
Data refresh speed
1 second
Algorithm
Measuring the SPL peak value
Power
Mini-USB slot or input for
connecting to a cigarette lighter
socket.
Display
Four segment display
Sockets/connectors:
Mini-USB, car cigarette lighter
socket (Type H Barrel)
Supply voltage
from 6 to 20 volt
Dimensions: (LBH)
2.72” x 1.97” x 0.83”
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Working with the device
Important safety information:
！ The manufacturer does not bear responsibility for damage, caused directly or indirectly, as a
result of improper device use.
！ Before using the device, examine its case for cracks and splits. Any depressurization of the
device will result in possible damage.
！ To avoid the risk of electric shock, all connector cables should not have insulation defects.
！ Avoid measuring load beyond its maximum limit.
！ All operations of connecting and disconnecting cables should be performed with equipment
off.
！ Do not use or store the device in areas with high humidity or heat, as well as, close to devices
generating a strong magnetic field.
！ During the preventive maintenance of the device, do not use synthetic detergents or solvents.
Using wet wipes is more preferable.
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Identifying the functional parts of the device:
Number
of the element
Description
1
Display
2
Functional button #1
3
Mini-USB slot for auxiliary power supply and updating the firmware
4
Functional button #2
5
Primary Power socket for connecting the adaptor and measuring voltage
6
Functional button #3
7
Suction cups for attaching the device to the windshield
8
Sound pressure meter
Button assignment
Button
Assignment
Functional button #1
Selecting the type of displayed value (SPL, frequency, voltage)
Functional button #2
Enabling the hold mode.
Functional button #3
Resetting readings in the hold mode.
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Hold mode
Press Functional button #2: currently selected hold mode will be displayed. Using buttons #1 &
#3, select the required mode according to the table below. For completing this procedure, press
Functional button #2.
Type of mode
Description
OFF
Peak hold is switched off
P1
The maximum pressure and voltage that corresponds to this pressure are
being held
P2
The maximum pressure and maximum voltage are being held
P3
The maximum pressure and minimum voltage are being held
Values on screen will blink if the Hold Mode is enabled.
Service mode
For entering Service Mode, press buttons #1 & #3 when switching the device on and wait until
the blinking text, “CFG”, appears on screen.
Select necessary parameter by pressing Functional button #3.
Set the necessary parameter value using Functional buttons #1 (decreasing value) and #3
(increasing value).
After setting the last parameter and pressing Functional button #2, the device will save
the selected parameters and will change to measuring mode.
Menu item
Assignment
TYP
Setting the device calibration type.
1 - TERM-LAB Classic
2 - TERM-LAB Magnum
dB
Adjusting the correction of the sound pressure (0.0 by default)
U
Adjusting the correction coefficient for voltage (0.5 by default)
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