AMAR G4

Autonomous Multichannel Acoustic Recorder Generation 4

Superior quality multi-sensor data

With removable memory and pre-packaged battery packs, it’s quick and easy to refresh the AMAR and put it back in the water. WAV and CSV files are saved to SD cards, directly readable by your computer.

Configure the AMAR, get status updates, and download test data over Wi-Fi. Multiple battery packs can be daisy chained together for year-long continuous recordings.

The innovative design provides a low noise floor of -150 dB re FS per root hertz at all sample rates. We work closely with hydrophone manufacturers to develop the right system for your needs. Three real-time clock options, including Chip Scale Atomic Clock (CSAC), for precise data timing.

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Proven track record

JASCO has completed over 1000 AMAR deployments, amounting to a cumulative deployment duration of over 300 years.

The AMARs data return rate is 99.4%!

Intuitive user interface

The AMARlink software is designed for usability: easy to learn and easy to use.

Set up multiple sampling rates, duty cycles, and recording schedules with ease
See estimated endurance of batteries and storage memory for your chosen settings
Save your recording schedules for quick and easy reuse

Specifications

Environmental

Maximum depth:	500 m G4 ACE – Standard acetal housing 250 m G4 PVC 2X – PVC housing 3000 m G4 Deep – Anodized aluminum housing 6700 m G4 Ultra Deep – Glass sphere housing
Operating temperature:	−5 to 50 °C
Storage temperature:	−18 to 55 °C

Hydrophones and arrays

Models:	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
Sensor types:	Omnidirectional hydrophones Directional hydrophones Vector sensors Small linear arrays Small spatial arrays

Acoustic channels

Number of channels:	4 G4 ACE 4 to 16 G4 PVC 2X, G4 Deep, G4 Ultra Deep
Resolution:	24 bits
Sample rates:	8, 16, 32, 64, 128, 256, 512 ksps sampled synchronously
Spectral noise floor:	Better than −150 dB re FS per root Hz at all sample rates

Oceanographic sensors

Sensor options:	Oxygen Salinity Acidity/pH Depth Turbidity Orientation (roll-pitch-yaw) Temperature Others upon request
Four analog channels:	Sample rate: 1 sps Resolution: 10 bits Voltage: 0 to +5 V
Three serial channels:	One RS-232 and Two configurable as RS-232, RS-422, RS-485, or 3.3 V logic level

Power

Operating voltage:	7.8–28 V_DC
AC power adapter:	110–240 V 50–60 Hz 0.5 A
Batteries:	Alkaline, others upon request Various external battery pack options for each depth rating

Memory

Removable flash memory:	Up to 10 TB on 512 GB SD cards
Data format:	WAV, CSV

Timing

Clock accuracy (manufacturer’s specification):	Built-in clock: 5 ppm w/ 4.6 ppm aging over 20 yrs Optional TCXO clock: 0.7 ppm w/ 1 ppm aging in first year Optional CSAC: 10 ppb
Time sync options:	GPS PPS, NMEA: 60 μs accuracy AMARlink: 1 s accuracy

Communications

ACE and Ultra Deep models:	Configure via Wi-Fi Magnetic reed switches to start/stop recording
PVC and Deep models:	Wired Comms Box to connect via Ethernet Activation plug to turn on and off
Configuration software:	AMARlink

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

Learn more

Featured

AMAR G4 Product Family Brochure

AMAR model options, battery pack options, and specifications.

AMARlink Datasheet

The AMARlink desktop software let’s you easily configure your AMAR from any PC. You can set up sophisticated recording schedules and duty cycles, estimate battery and memory lifetimes, view recorded data and memory use, and download test data.