Equipment / AMAR G4

Autonomous Multichannel Acoustic Recorder
Generation 4

 JASCO's underwater acoustic recorder and oceanographic observatory, the Autonomous Multichannel Acoustic Recorder Generation 3 (AMAR G3).



Maximum depth:                    Standard (500 m)
                                               Deep (2500 m)
                                               Ultra Deep (6700 m)
Operating temperature:          −5 to 50 °C
Storage temperature:             −18 to 55 °C
Vibration resilience:                Tested to withstand transport by air, ground, and vessel

Hydrophones & arrays

Customizable options from various manufacturers. 
Sensitivities and frequencies tailored to your needs. 
Example sensitivities:            −164 dB re 1 V/μPa @ 1 kHz
                                               −210 dB re 1 V/μPa @ 1 kHz
Example frequencies:            1 Hz to 50 kHz
                                               5 Hz to 100 kHz
                                               20 Hz to150 kHz
Acoustic sensors:                   Omnidirectional hydrophones
                                               Directional hydrophones
                                               Vector sensors
                                               Small linear arrays
                                               Small spatial arrays


Power draw:                           350 mW (1 channel @ 32 ksps)
Operating voltage:                  7–28 Vdc
AC power adapter:                 110–240 V, 50–60 Hz, 0.5 A
Various external battery pack options for each depth rating.

Memory, recording, and timing

SD memory:                           Up to 10 TB on 512 GB cards
Acoustic data format:             WAV
Non-acoustic data format:      CSV
Optional CSAC:                      7 ms/year accuracy

Four acoustic channels

Resolution:                              24-bit
Sample rates:                          8–512 ksps sampled synchronously
Spectral noise floor:                Better than −150 dB re FS per root Hz at all sample rates

Oceanographic sensor channels

Sensor options:                      Oxygen
                                               Orientation (roll-pitch-yaw)
                                               Others upon request
Four analog channels:
        Sample rate:                   1 sps
        Resolution:                     10 bits
        Voltage:                          0 to +5 V
Up to three serial channels:   Three RS-232 or
                                               One RS-232 and two 3.3 V logic level or
                                               One RS-232 and one RS-485

Wireless Communications

Wi-Fi and Bluetooth enabled
Magnetic reed switches to start and stop recording

Due to continued product improvement, these specifications are subject to change without notice.

Contact us for pricing and customization options.