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ACOUSTIC MODEMS

Teledyne Benthos underwater acoustic modems are used in worldwide subsea applications to transmit data wirelessly through the water. They are the only modems available in a combined modem/acoustic release configuration. Reduce expensive underwater cabling by making any subsea sensor a wireless sensor for shallow or deep water applications. Customer Integrated Electronics (CIE) available.

Modem applications include remote monitoring of oceanographic sensors, control of wellhead and pipeline valves, control of autonomous underwater vehicles (AUVs), and subsea networking. The ATM series acoustic telemetry modems are the most advanced, multi-path, noise tolerant, and cost efficient ever available. They are designed to meet both high data rate requirements and higher reliability, lower data rate requirements.

For more information about modem applications click here.

Do you own a previous version of a Benthos modem? If you don't see your device on the page below, please click here for more information. 

Click on the images below to view the full page product information.

 

Do you own a previous version of a Benthos modem? If you don’t see your device on the page below, please click here for more information

ATM-900 Series Modems

The Teledyne Benthos ATM-900 Series Acoustic Telemetry Modems are a major enhancement to previous modem lines offered. The new ATM-900 Series provides a long list of special purpose, flexible extensions supporting multiple capabilities beyond "just" underwater communications. These capabilities range from high capacity data logging, through updated data storage and user command line interfaces to real-time clock integration. Each surface unit can operate using cables from 2m to 200m with a mating transducer for each cable. Both directional and omnidirectional transducers are available.

  Depth Size Weight Power Frequencies

ATM-910 Series

500 m
(1,640 ft)

 

Diameter:
10.2 cm 
(4.0 in)

Length:
Varies by model

Dry:
Click image (left) to find specific model

378 W·Hr
internal batteries (can also be powered by external source) 

Low frequency
(LF) 9-14 kHz

Mid frequency
(MF) 16-21 kHz 

Band C frequency 22-27 kHz

ATM-920 Series

2000 m (6,560 ft)

Diameter:
6.9 cm
(3.5 in) 
 

Length:
Varies by model

Dry:
Click image (left) to find specific model 

378 W·Hr
internal batteries (can also be powered by external source)

Low frequency
(LF) 9-14 kHz

Mid frequency
(MF) 16-21 kHz 

Band C frequency 22-27 kHz

 ATM-960 Series
 

6000 m(19,680 ft)

Diameter:
12.7 cm
(5.0 in) 

Length:
Varies by model

Dry:
Click image (left) to find specific model

588 WHr internal batteries (can
also be powered by external source) 

Low frequency
(LF) 9-14 kHz

Mid frequency
(MF) 16-21 kHz 

Band C frequency 22-27 kHz

 ATM-903 Series

Transducer rated to 
6000 m (19,680 ft)
 

14.04 cm
(5.53 in) 
x
4.64 cm
(1.83 in) 

6.90 cm
(2.72 in)
for board set

0.56 kg 
(1.25 lbs) 
electronics

1.81 kg 
(4 lbs) or less transducer

 

12-36 VDC (provided by customer)

Low frequency
(LF) 9-14 kHz

Mid frequency
(MF) 16-21 kHz 

Band C frequency 22-27 kHz

 Smart Products

Smart Modem SR-100
 

6,700 m (22,000 ft) 

Diameter:
12.7 cm
(5 in)
 

Length:
111.8 cm
(46 in)
 

Dry:
47.7 kg 
(105 lbs)

Wet:
37.7 kg 
(83 lbs)

588 WHr internal 
batteries (up to 
2 year battery life)

Low frequency
(LF)9-14 kHz 

Smart Modem SR-50

305 m
(1,000 ft) 

Diameter:
19.8 cm
(7.8 in)
  

Length:
74.7 cm
(29.4 in)

Dry:
15.64 kg 
(34.5 lbs)

Wet:
6.8 kg 
(15 lbs)

 

588 W Hr
internal batteries (up to 2 year
battery life)

Low frequency 
(LF) 9-14 kHz

Smart Modem SM-75

6700 m (22,000 ft) 

Diameter:
33 cm
(13 in) 
or
43 cm
(17 in) 

33 cm (13 in) 
= 18 kg (40 lbs)

43 cm (17 in) 
= 27 kg (60 lbs) 

588 W Hr
internal batteries (up to 1 year deployment life)
 

Low frequency
(LF) 9-14 kHz
 

Surface Units  
  Depth Size  Weight  Power  Frequency 

UDB-9400

Surface use only, not depth rated

Transducer rated to 
200 m 
(656 ft)

Length:
29.8 cm
(11.75 in) 
length

Width:
44.4 cm
(17.5 in)

Height:
17.8 cm
(7 1n) 
each case


Deck Box:
<13.6 kg 
(30 lbs)

Transducer: 
<13.6 kg 
(30 lbs)

Internal: 
24V lead acid battery (two
12V in series)

External AC:
AC, 85-265 VAC, 
47-63 Hz,

External DC:
10-30 VDC 

Low frequency (LF) 7-15 kHz, 
other frequencies available upon request

Gateway Buoy

Surface
buoy with transducer
at 5 m
(16 ft)

Diameter:
87 cm
(34 in) 

Height:
305 cm
(120 in) from bottom of buoy to top of antenna
 
 

In Air:
47.7 kg
(105 lb)

Four 12-volt rechargeable sealed lead-acid batteries

9-14 kHz (LF)

 


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Telephone: (508) 563-1000 • Fax: (508) 563-6444
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