| ACOUSTIC MODEMS |
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Teledyne Benthos underwater acoustic modems are used in worldwide subsea applications to transmit data wirelessly through the water.
Modem applications include remote monitoring of oceanographic sensors, control of wellhead and pipeline valves, control of autonomous underwater vehicles (AUVs), subsea networking and many military applications. The ATM series acoustic telemetry modems are the most advanced, multi-path and noise tolerant, and cost efficient ever available. They are designed to meet both the high data rate requirements of commercial users, and the higher reliability, lower data rate requirements of the military. "Telesonar" is derived from the words telemetry and sonar, where telemetry is data transmission, and the word sonar (a general term for the applications of underwater sound), was derived many years ago from the acronym for sound navigation and ranging.
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.
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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
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| ATM-900 Series Modems |
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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.
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Depth |
Size |
Weight |
Power |
Frequencies |
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ATM-910 Series
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500 m
(1,640 ft)
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Diameter:
10.2 cm
(4.0 in)
Length:
Varies by model
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Dry:
Click image (left) to find specific model
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378 W·Hr
internal batteries (can also be powered by external source)
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Low frequency
(LF) 9-14 kHz
Mid frequency
(MF) 16-21 kHz
Band C frequency 22-27 kHz
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ATM-920 Series

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2000 m (6,560 ft)
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Diameter:
6.9 cm
(3.5 in)
Length:
Varies by model
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Dry:
Click image (left) to find specific model
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378 W·Hr
internal batteries (can also be powered by external source)
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Low frequency
(LF) 9-14 kHz
Mid frequency
(MF) 16-21 kHz
Band C frequency 22-27 kHz
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ATM-960 Series

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6000 m(19,680 ft)
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Diameter:
12.7 cm
(5.0 in)
Length:
Varies by model
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Dry:
Click image (left) to find specific model
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588 WHr internal batteries (can
also be powered by external source)
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Low frequency
(LF) 9-14 kHz
Mid frequency
(MF) 16-21 kHz
Band C frequency 22-27 kHz
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ATM-903 Series

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Transducer rated to
6000 m (19,680 ft)
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14.04 cm
(5.53 in)
x
4.64 cm
(1.83 in)
x
6.90 cm
(2.72 in)
for board set
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0.56 kg
(1.25 lbs)
electronics
1.81 kg
(4 lbs) or less transducer
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12-36 VDC (provided by customer)
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Low frequency
(LF) 9-14 kHz
Mid frequency
(MF) 16-21 kHz
Band C frequency 22-27 kHz
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| Smart Products |
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Smart Modem SR-100

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6,700 m (22,000 ft)
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Diameter:
12.7 cm
(5 in)
Length:
111.8 cm
(46 in)
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Dry:
47.7 kg
(105 lbs)
Wet:
37.7 kg
(83 lbs)
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588 WHr internal
batteries (up to
2 year battery life)
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Low frequency
(LF)9-14 kHz
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Smart Modem SR-50
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305 m
(1,000 ft)
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Diameter:
19.8 cm
(7.8 in)
Length:
74.7 cm
(29.4 in)
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Dry:
15.64 kg
(34.5 lbs)
Wet:
6.8 kg
(15 lbs)
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588 W Hr
internal batteries (up to 2 year
battery life)
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Low frequency
(LF) 9-14 kHz
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Smart Modem SM-75

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6700 m (22,000 ft)
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Diameter:
33 cm
(13 in)
or
43 cm
(17 in)
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33 cm (13 in)
= 18 kg (40 lbs)
43 cm (17 in)
= 27 kg (60 lbs)
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588 W Hr
internal batteries (up to 1 year deployment life)
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Low frequency
(LF) 9-14 kHz
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| Surface Units |
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Depth |
Size |
Weight |
Power |
Frequency |
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UDB-9400

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Surface use only, not depth rated
Transducer rated to
200 m
(656 ft)
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Length:
29.8 cm
(11.75 in)
length
Width:
44.4 cm
(17.5 in)
Height:
17.8 cm
(7 1n)
each case
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Deck Box:
<13.6 kg
(30 lbs)
Transducer:
<13.6 kg
(30 lbs)
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Internal:
24V lead acid battery (two
12V in series)
External AC:
AC, 85-265 VAC,
47-63 Hz,
External DC:
10-30 VDC
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Low frequency (LF) 7-15 kHz,
other frequencies available upon request
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Gateway Buoy

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Surface
buoy with transducer
at 5 m
(16 ft)
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Diameter:
87 cm
(34 in)
Height:
305 cm
(120 in) from bottom of buoy to top of antenna
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In Air:
47.7 kg
(105 lb)
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Four 12-volt rechargeable sealed lead-acid batteries
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9-14 kHz (LF)
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