Skip to Content

S2C R 18/34H

Underwater Acoustic Modem

S2CR 18/34H with a hemispherical transducer beam pattern is optimal for communication in vertical and slant channels, providing wide-area coverage with data transfer rates up to 13.9 kbit/s over a 3500 m range.

High-Speed

High frequency device for fast data transfers

Highly Configurable

Multiple configuration options and extra modules available to best-fit the particular application scenario

Directivity pattern

The beam pattern is optimal for transmissions in slant channels

S2C R 18/34H - TECHNICAL SPECIFICATIONS

Delrin 200 m
Aluminium Alloy 2000 m
Stainless Steel 2000 m
Titanium 6000 m
Operating Range 3500 m
Frequency Band 18 - 34 kHz
Transducer Beam Pattern hemispherical
Acoustic Connection up to 13.9 kbit/s
Bit Error Rate less than 10-¹⁰
Internal Data Buffer 1 MB, configurable
Host Interface [1] Ethernet or RS-232
Interface Connector up to 4 connectors, Ethernet and serial combinations
Stand-by Mode 2.5 mW
Listen Mode 5 - 285 mW
Receive Mode 0.8 W
Transmit Mode 2.8 W, 1000 m range
Transmit Mode 8 W, 2000 m range
Transmit Mode 35 W, 3500 m range
Transmit Mode 80 W, max. available
External 24 VDC (12 VDC)
Internal rechargeable battery
Delrin ✓
Aluminium Alloy ✓
Stainless Steel ✓
Titanium ✓
Housing Ø 110x218 mm
Total length 300 mm
Delrin 3100/500 g
Aluminium Alloy 3000/1600 g
Stainless Steel 10400/6000 g
Titanium 7100/5000 g

1) One RS-232 Interface can be replaced with a RS-422 interface. Contact EvoLogics for more information!
2) Power consumption for RS-232 interface. Add 500 mW if an Ethernet interface is installed. Add 300 mW if the Wake-Up Module is installed. User-configurable Listen Mode is only available with a Wake-Up module installed. Power consumption in Listen Mode depends on Listen Mode settings.
3) Contact EvoLogics for more information on external and internal power supply options.
4) Dimensions of a Delrin housing, other builds are slightly larger.
5) The Wake Up Module is only compatible with RS-232 interface! It is not compatible with Ethernet or RS-422. 2-interface Wake Up Module version reacts to incoming data on two serial interfaces.
6) The Power Switch is only compatible with RS-232 interface! It is not compatible with Ethernet or RS-422.



Specifications subject to change without notice. ©EvoLogics GmbH

S2C R 18/34H Directivity Pattern

Modules and Options

Wake-Up Module [5]
✓
Power switch [6]
✓
Advanced Timekeeping Module ✓
SDM Version
✓
Acoustic Release Device
✓
Floatation Collar
✓
Pressure Sensor
✓
Cable-Mounted Transducer
✓
OEM-Version
✓

S2C R 18/34H - DOWNLOADS

S2C Modems Brochure
S2C R 18/34H Datasheet