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Key Features

  • Accurate and stable
  • Integrated pitch, roll and heading sensors
  • Tested to military standards for compatibility
  • Easy to integrate
  • Approved for military use

Applications

  • Mine countermeasures (MCM)
  • Underhull inspection
  • Diver Tracking
  • AUV/ ROV tracking

Technical Specification

Physical Specification

Dimensions
Model 2671 Inboard Electronics Unit
360.0mm x 240.0mm x 130.0mm
Model ETM902C Acoustic Sensor
410.0mm x Ø100.0mm (including connector)
Model 2675 Interface Box
161.0mm x 163.00mm x 91.0mm

Weight
Model 2671 Inboard Electronics Unit
11.0kg including x mounts
Model ETM902C Acoustic Sensor
9.5kg in air 7.0kg in water
Model 2675 Interface Box
1.6kg
ETM902C Depth rating
50m

Acoustic Specification

Accuracy is based on the correct speed of sound being entered, no ray bending and an acceptable S/N ratio

Slant Range accuracy
0.2m (accuracy dependent on correct speed of sound)
Position Accuracy
0.6° drms 1.0% of slant range
(acoustic accuracy excluding heading errors)
Frequency Band (MF)
Reception 24 – 30 kHz
Transmission 17 – 26 kHz
Transmitter power > 187dB ref. 1µPa at 1m
Tracking Beam Pattern
Hemispherical
Beacon Types
Transponders and responders
Interrogation Rate
Internally set or external key
Compass accuracy
0.5°

Electrical Specification

Power Requirements:
90 to 240VAC 50A

Environmental Specification

Temperature

DEF STAN 00-35 Part 3: Issue 4 including temperature shock test.CL14

Operation in water
-4˚C to +32˚C
Operation in air
-20˚C to +44˚C
Storage temperature
-40˚C to +70˚C

 

High ambient temperature operation in air is for short duration system checks only, thermal protection is
fitted and unit will auto shut down.

Vibration

DEF STAN 00-35 Part 3: Issue 4
M1: General Purpose Vibration Test: Deployed or installed in surface ships: Sine sweep
M1: General Purpose Vibration Test: Deployed or installed in surface ships: Sine dwell

Test Type
Region
Amplitude (mm pk)
Frequency (Hz)
Duration (mins)
Sine Sweep
Upper deck, Protected Compartment and Hull
0.125
5 to 33
60
Sine Dwell
All
1.250
14
20
0.300
23
20
0.125
33
20

Shock

DEF STAN 00-35 Part 3: Issue 4
M7: Shock Testing for Warship Equipment & Armament Stores: Classical Shock Pulse
NCUE – Classical Shock Pulse

Vertical
Lateral
Longitudinal
Pulse Shape
Half Sine
Pulse Width
10ms
Acceleration
45g
25g
25g
Duration
1 shock in each direction of each orientation (6 in total)

Compatibility

EMC

DEF STAN 59-41 Part 3*
*subject to power supply

Magnetic Signature

Acoustic sensor housing is Aluminum Silicon Bronze (NES 834) with a typical relative magnetic permeability
of 1.05.

Model UC30 Deck Cable

Cable Jacket
Polyurethane jacket
Construction
7 screened twisted pairs (STP)
Diameter
10.8mm approx.
Bend Radius
200mm minimum
SWL (Safe working load)
25kg, (tested to 50 kg)

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