OCEANOGRAPHY

10/09/2024

Signature 100 - 1500 m

Long-range current profiler designed for combined current profile andbiomass measurements

The Signature 100 combines a four-beam current profiler operating at 100 kHz with an optional scientificechosounder.
Both the current profiler and the biomass measurements have an effective range of 300-400 m providing
unprecedented insight into the dynamics of zooplankton, krill or even schools of fish. Likewise, acoustic tracer
material can give new insight into small-scale physical processes.

Highlights
300–400 m current profiling range
Optional center beam with 70–120 kHz
echosounder

Applications
Detection of krill or plankton in the watercolumn with scientific echosounder
Upwelling and downwelling studies
Suitable for buoy mounting with internal
AHRSTechnical specifications
Water velocity measurements
Maximum profiling range

300-400 m*

Cell size

3–15 mMinimum blanking

2m

Maximum number of cells

200

Velocity range (along beam)

User-selectable 2.5 or 5.0 m/s

Minimum accuracy

1% of measured value ± 0.5 cm/s

Velocity precision

Broadband processing, consult instrument software

Velocity resolution0.1 cm/s

Max sampling rate

1 Hz (1/2 Hz at max output power)*Maximum range depends on acoustic scattering conditions.

HR option (on 5th beam only)
Velocity range

N/A

Cell size

N/A

Profiling range

N/A

Range velocity limitations

N/A

AD2CP Measurement modes*
SingleAverage

Concurrent

Average and echosounder

Alternate

N/A* US Patent 8223588

Echo Intensity (along slanted beams)
SamplingSame as velocity

Resolution/dynamic range

0.5 dB/70 dB

Transducer acoustic frequency

100 kHz

Number of beams

4 slanted at 20°, optional vertical beam for echosounderBeam width

6.1° (slanted)

Echosounder option
Transducer acoustic frequency

70–120 kHz

Transducer beam width

15° @ 70 kHz, 8.7° @ 120 kHz

Resolution

0.375–4 m

Number of bins

1800

Transmit pulse length

0.5–6 ms

Transmit pulse

Monochromatic 70 kHz, 90 kHz and 120 kHz or frequency
chirp (90 kHz, 50% BW)

Transmit power

1.2–120 W, adjustable

Chirp signal processing

Pulse compression or binned frequency response

Echosounder option
Raw complex data storage

Configurable rate

Resolution/dynamic range

0.01 dB / 130 dB

LinearityTBA

Wave measurement option
AST frequency

N/A

AST max distance

N/A

Maximum wave measurement depth

N/A

Height range

N/A

Accuracy/resolution (Hs)

N/A

Accuracy/resolution (Dir)

N/APeriod range

N/A

Cut-off period (Hs)

N/A

Cut-off period (dir)N/ASampling rate (velocity and AST)

N/A

Ice measurement option
Parameters

N/ASensors
Temperature

Thermistor in head (sampled at meas. rate)

Temp. range-4 to +40 °C

Temp. accuracy/resolution

0.1 °C/0.01°C

Temp. time response

2 minCompass

Solid-state magnetometer (Max 1 Hz sample rate)

Accuracy/resolution

2° for tilt < 30°/0.01°

Tilt

Solid-state accelerometer (Max 1 Hz sample rate)

Accuracy/resolution

0.2° for tilt < 30°/0.01°

Maximum tilt

Full 3DUp or down

Automatic detect

Pressure

Piezoresistive (sampled at meas. rate)

Standard range

0–1500 m (inquire for options)

Accuracy/precision

0.1% FS / Better than 0.002% of full scale

AHRS option
Accelerometer dynamic range±2g

Gyro dynamic range± 250°/sec

Magnetometer dynamic range± 1.3 Gauss

Pitch and roll range/resolution± 90° (pitch) ± 180° (roll) / 0.01°

Pitch and roll accuracy± 2° (dynamic)*, ± 0.5° (static, ±30°)

Heading range/resolution

360°, all axis / 0.01°

Heading accuracy± 3° (dynamic)2), ± 2° (static, tilt < 20°)

AHRS option
Sampling rate

Same as measurement rate (up to 1 Hz)* Dynamic specifications depends on the type of motion

Data recording
Capacity

16 GB, 64 GB or 128 GB (inquire for larger capacity)

Data record

Consult instrument software

Mode

Stop when fullReal-time clock
Accuracy± 1 min/year

Clock retention in absence of external1 year. Rechargeable backup battery

power

Data communications
Ethernet

10/100 Mbits Auto MDI-XTCP/IP, UDP, HTTP protocolsFixed
IP/DHCP client/AutoIP, UPnP

SerialConfigurable RS-232/RS-422 300–1250000 bps

Recorder download baud rate

20 Mbit/s (Ethernet only) - 1 GB in 6 minutes

Controller interface

ASCII command interface over Telnet and serial

Connectors
Depending on configuration

MCBH6F (Ethernet), MCBH8F (serial), MCBH2F-G2 (pwr),
optional Souriau M-series metal connector for online use(14M)

SoftwareFunctions

Deployment planning, instrument configuration, data retrieval
and conversion (for Windows®)PowerDC input

15–48 V DC

Maximum peak current

1.5 A

Max. average consumption at 1 Hz

15 W

Typical average consumption*2WSleep consumption

100 μA, power depending on supply voltage

Transmit power per beam

4–200 W, adjustable levels

Ping sequence

Multiplexing or parallel* 10 min. avg. profile,1 cm/sec hor. prec., max cell size, max power, long range mode. Consult SW for otherconfigurations

Batteries
Internal

One or two 540 Wh alkaline or 1800 Wh lithium

Duration

Depending on configuration, consult software

Environmental
Operating temperature-4 to +40 °C

Storage temperature-20 to +60 °C

Environmental
Vibration

IEC60068-2-64

EMC approval

IEC/EN 61000-6-2, 61000-6-3

Depth rating

1500 m (for 6000 m version, contact Nortek for specifications)

Materials
Standard model

POM with titanium fasteners. Titanium/POM transducer cups

Dimensions
Maximum diameter

460 mmMaximum length with room for internal

765 mm (2 batteries)

batteries
Maximum length without room for

N/Ainternal batteries

WeightIn air, no battery

37.5 kg

In water, no battery

13 kg

Battery

10.0 kg (2x540 Wh), 5.8 kg (2x1800 Wh)