communication and positioning devices
The 18/34, 18/34D and 18/34H are a family of universal devices for communication in reverberant shallow waters,
providing data transfer rates up to 13.9 kbit/s over a 3500 m range.
All versions are acoustically compatible with each other and differ in their depth ratings and beam patterns.
The applications include:
Short- and mid-range operations in shallow waters
High-speed communication and positioning for deep-water applications (18/34D)
Data link and positioning for AUVs and ROVs
Underwater acoustic sensor networks
18/34 models are available in the following product lines:
S2C R - highly configurable standard build, optionally as OEM without housing (all versions)
S2C M - light and compact build for popular tasks, optionally as OEM without housing (only 18/34)
S2C R USBL - highly configurable build with integrated USBL antenna for positioning, optionally as OEM without housing (all versions)
S2C R WiSE - special edition with firmware sandbox for developers (only 18/34)
The 18/34 with a horizontally omnidirectional transducer beam pattern is a universal tool for communication in reverberant shallow waters. The beam pattern is optimal for horizontal transfers between mobile and/or stationary nodes.
Its compact transducer and great speed/range combination makes the standard 18/34 the most popular model for fast communication and positioning up to 2000 m deep.
18/34D with a horizontally omnidirectional depth-rated transducer is a limited edition of 18/34.
18/34D is only available in titanium housing and is depth-rated for up to 6000 m, offering high-speed communication and positioning for deep-water applications.
The 18/34H version offers the same speed and operating range as 18/34, but provides a wider-area coverage.
Its larger transducer with hemispherical beam pattern is optimal for horizontal, vertical and slant transfers between mobile/seafloor nodes and the surface.
|Aluminium Alloy housing||
|Stainless Steel housing||
2000 m (6000 m for 18/34H, 18/34D)
18 - 34 kHz
|Transducer Beam Pattern||
horizontally omnidirectional (18/34 and 18/34D)
up to 13.9 kbit/s
|Bit Error Rate||
less than 10-¹⁰
|Internal Data Buffer||
1 MB, configurable