Perform long-term recording of time waveform in multiple channels.

The 4-channel model DA-21 are compact data recorders designed to record acoustic and vibration waveforms as well as various types of electrical signals for on-site measurement in multiple channels.
Data are stored on memory card (SD card) in WAVE format, and can be reproduced as analog signals.
Directly importing data into a computer for waveform analysis processing is possible.

The reproduced analog signal can be processed using an FFT analyzer or various other equipment.
Because there are no mechanical drive parts, sound measurement is not affected by unwanted noise.
Battery powered operation, compact dimensions, and light weight make the unit ideal for measurements in the field.

Maximum recording times are approximately as shown below.

● 4-channel data recorder DA-21 with 32 GB SD card
1 recording channel, frequency range 100 Hz: 17066 hours 40 minutes
4 recording channels, frequency range 100 Hz: 4266 hours 40 minutes
1 recording channel, frequency range 20000 Hz: 85 hours 20 minutes
4 recording channels, frequency range 20000 Hz: 21 hour 20 minutes

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