Rion DA-21 Data Recorder

Rion DA-21 Data Recorder

The DA-21 epitomises how portable data acquisition (such as audio or vibration signal recording) should be. Quick, simple, flexible, portable, battery-powered and storing data in standard wav file format to portable media that can be opened and analysed without recourse to specific bespoke software. When you choose a DA-21 for in-situ data acquisition you will be storing data long before you would have figured out how to get started with most data acquisition systems. The DA-21 records wav files (up to 4 channels) onto SD Cards. Input is via standard BNC connectors and CCLD line drive accelerometers can be connected directly. Designed for the rigours of in-situ use, the DA-21 is perfect for measuring noise and vibration inside vehicles and in other locations where you can’t practicably or would prefer not to attach sensors directly to the system you are going to use for analysis.

 

  • Two DA-21 Data Recorders can be synchronised for 8 channel recording.
  • There is an additional fifth input specifically for rotary signal (e.g. tachograph input).
  • Records up to 4 channel 16 or 24 bit wav files (selectable)
  • Two units can be synchronised for up to 8 channel data acquisition
  • Additional dedicated rotary signal input (e.g. tacho)
  • Data recorded onto SD card for easy and quick data transfer
  • Also operates as USB mass storage device for direct transfer of data
  • Frequency range d.c. – 20 kHz
  • 80 dB dynamic range
  • Inter-channel phase difference < 1°
  • Input voltage ranges (peak) 0.01V, 0.03V, 0.1V, 0.3V, 3V and 10V
  • Frequency ranges 100, 500, 1000, 5000, 10 000 and 20 000 Hz (sample rate selectable 2.4x or 2.56x)
  • 5 Hz High Pass and 200, 1 kHz and 2 kHz Low Pass Filters (all filters can be switched off)
  • Supports direct connection of suitable microphone pre-amplifiers and accelerometers
  • 2 mA 18V power supply for CCLD devices (e.g. line drive accelerometers or microphone pre-amplifiers such as the Rion PV-41 Accelerometers or NH-22 Pre-Amp)
  • Charge accelerometers supported if used with Rion VP-40 input adaptors
  • Recording can be internally triggered by a user selectable level
  • Recording can be triggered externally
  • 0, 1 second or 5 second user-selectable pre-trigger
  • Time based trigger – repeated recordings can be made at user selectable preset intervals
  • Can be powered from standard internal batteries (4 x AA cells) or external (5 - 20V d.c.) supply
  • Up to 10 hours battery life on internal batteries when CCLD off and up to 7.5 hours with CCLD supply on
  • Very small, light and compact (175mm x 140mm x 45 mm and around 600g including batteries)
  • Really simple to operate with physical tape-recorder type buttons for record and play functions and a logical and intuitive menu structure for setting the instrument up
  • Clear backlit LCD display which shows real time input levels as bar graph display
  • Supplied with free Viewer software for reviewing signals
  • Up to 32GB SD Cards supported
  • Available recording time dependent upon user-selected frequency range and number of channels but for example (with a 32GB card) 1 channel up to 20 kHz – 85 hours 20 minutes, 3 channels up to 500 Hz - 1137 hours and 36 minutes