SM-976
  • Rechargeable lithium ion batteries
  • Combined acoustic modem and release
  • Ideal for use as an LBL node
  • Supports all acoustic modem optional features
Detailed Information Below

SM-976 Technical Specs

Overview Specifications Applications Related Products Downloads

​All In One Modem, Float, and Release

Smart Modem Acoustic Release Technology (SMART) is a unique concept from Teledyne Benthos, that combines the proven technology of an underwater acoustic release with the reliable undersea communications functionality of an acoustic modem.

  • Our SM-976 is similar to our SM-975, but offers rechargeable lithium ion batteries. The electronics, batteries and transducer are housed in a glass sphere with a burn wire release mechanism.
  • This self-buoyant modem, however, offers even more capabilities. The glass sphere contains the modem PCB which allows the user full telemetry capability, to full ocean depth, with RS-232 connectivity to attached sensors.
  • Our SM-976 may operate independently or can function as a node in a small network.
  • Our SM-976 is a modem, float, and release all in one. This decreases the equipment, integration, and deployment costs.
Specification Description
DEPTH

​6,700 meters (22,000 feet)

DIMENSIONS

​13 inches (33 cm) diameter*

* 17 inch diameter sphere available upon request

WEIGHT

In Air: 40 lbs (18 kg)

In Water (positively buoyant): 5 lbs (2.26 kg)

POWER

190 W - Hr internal batteries (rechargeable lithium ion)

(up to year deployment life)

FREQUENCIES

Band C frequency 22-27 kHz*

* other frequency options available upon request

TRANSDUCER

​Omni directional

CONNECTION

​Subconn MCLPBH9M, 9 pin RS-232 cable included

ACOUSTIC RELEASE MECHANISM

​“Burn-wire” type release

BAUD RATE

​140-15,360 bps

BIT ERROR RATE

​Better than 10-7 with high SNR

DATA STORAGE

​704 kByte datalogger standard

PROCESSING

​Data redundancy, 1/2 rate convolutional coding nultipath guard period selection MFSK and PSK modulation schemes.

DISTANCES / RANGE

​2-6 km common, greater distances possible

20+ km available using repearter functionality

ACCESSORIES

​Burn Wire Module (B-270-344)

Burn Wire Retrofit Kit (014534)

Rearming kit (014529)

  • Combined modem and release functions.
  • Can act as an underwater acoustic network repeater or LBL node.
Teledyne Benthos / 49 Edgerton Drive North Falmouth, MA 02556 USA / ISO 9001 Certificate / Terms and Conditions
Phone: (508) 563-1000 / Fax: (508) 563-6444
Copyright 2017 Teledyne Technologies Incorporated. All rights reserved.