MC3642A/B is 4-channel data acquisition developed by BSWA TECH. It is a plug and play virtual instrument system with rugged and durable all-aluminum case, and using the USB interface to connect the computer.

MC3642A/B was developed base on high performance data acquisition module. It includes 4 input channels (with 4 adjustable gains) and 2 output channels, can simultaneously analyze 4 channels of acoustic and vibration signals. It can apply to most acoustic and vibration testing with the VA-Lab measurement software.


Sampling rate up to 128 kHz

Low self-generated noise, high dynamic range

4-BNC connectors input channel with adjustable gain, ICCP power supply and AC/DC switch

2-BNC connector voltage signal output channel

Directly connect to ICCP sensors (such as BSWA MPA201) or voltage signal

Compact and portable, professional and carrying and shipping case

Suitable for laboratory and field noise measurements


General acoustic measurements: audio recording, spectrum analysis, sound level meter

Professional acoustic measurements: impedance tube, sound intensity, reverberation time, building sound insulation, sound power, loudness, IACC and so on

Technical Parameters
Type MC3642A|MC3642B
Input Channel 4 channel simultaneous sampling
Input Connector BNC with adjustable gain, ICCP power supply (4mA/24V) and AC/DC mode switch (software selectable)
Self-Generated Noise Level1, 2 30 dBA(0 dB Gain), 20 dBA(+10 dB Gain)|40 dBA(-10 dB Gain), 30 dBA(0 dB Gain)
Input Frequency Response 2 Hz~50 kHz (±0.5 dB)
Input Dynamic Range 107 dBA (0 dB Gain), 107 dBA (+10 dB Gain)|107 dBA (-10 dB Gain), 107 dBA (0 dB Gain)
Input Linearity Range1, 3 21 dBA~137 dBA|29 dBA~147 dBA
Input Gain 0dB, +10dB, +20dB, +30dB|-10dB, 0dB, +10dB, +20dB
Gain Error ≤ ±0.05 dB (1 kHz)
Maximum Input Voltage ±10 Vpeak (0 dB Gain)|±31.6 Vpeak (-10 dB Gain)
Output Channel 2
Output Connector BNC
Output Frequency Response 4 Hz~31.5 kHz (±0.5 dB, output sampling rate 96 kHz)
Maximum Output Voltage 1.8 Vrms
Maximum Output Current ±20 mA
AD/DA Resolution 24 bits
AD/DA Sampling Rate Input: 1 kHz~128 kHz, Output: 8/16/32/44.1/48/96 kHz
USB Interface USB-Type B, USB 2.0 compliant
Power Supply External DC power supply 7V~14V (1 A)
Operating Environment Temperature: -10°C ~50°C, Humidity: 5% RH~95% RH (non-condensing)
Dimension (mm) W224 x H51 x D264
Weight 1.96kg (only data acquisition)
Note 1: Reference sensitivity: 50 mV/Pa.
Note 2: Measured with 18pF capacitive load.
Note 3: Measured according to IEC 61672: 2013.

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