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Nortek Signature VM 1000k Hz frame frontview squared
Nortek Signature VM processing unit
Nortek Signature250 250k Hz sideview 5 transducer
Nortek Signature VM delivery box
Signature250 VM ready to be deployed through moonpool
Nortek Signature VM 1000k Hz frame frontview squared Nortek Signature VM processing unit Nortek Signature250 250k Hz sideview 5 transducer Nortek Signature VM delivery box Signature250 VM ready to be deployed through moonpool

VESSEL-MOUNTED CURRENT PROFILER

VM Coastal (1000|500|250 kHz)

The Signature VM package delivers vessel-mounted ADCP capabilities based on present-day technology

  • A coherent system that is quick and convenient to operate
  • Outstanding bottom-track performance, even under challenging conditions
  • Fifth echosounder beam for sediment measurements down to the bottom (1000/500)
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Technical specification (PDF)
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Overview

  • The Signature VM Coastal safeguards data quality, opens up new and unprecedented opportunities to the scientific community, and offers operational convenience and reduced complexity.

    The Signature VM Coastal package includes the Signature1000, 500 or 250, allowing for great versatility in both the vessel-mounted and bottom-mounted configurations. By using a state-of-the-art and user-friendly vessel-mounted package, measurement errors and initial installation time can be greatly reduced.

Highlights

  • A coherent system that is quick and convenient to operate
  • Fifth echosounder beam for sediment measurements down to the bottom (1000/500)
  • Ethernet ADCP and GNSS hardware, offering tight network timing
  • Simultaneous current and depth information in one place (1000/500)
  • Outstanding bottom-track performance, even under challenging conditions
  • Straightforward data-acquisition and processing software

Applications

  • Coastal surveys, up to 200 m depth
  • Port and harbor mapping
  • Studies of tidal currents
  • Sediment transport studies
  • Large-scale mixing studies

    • Toggle all

    • Water velocity measurements for Signature VM 1000 KHZ

      Profiling range* 30 m
      Cell size 0.2–2 m
      Max no. cells 256
      Min. blanking 0.1 m
      Minimum accuracy 0.3% of the measured value ± 0.3 cm/s
      Velocity resolution 0.1 cm/s
      Maximum sampling rate 14 Hz
      No. of beams 4 slanted at 25 degrees
      *) Maximum range depends on acoustic scattering conditions and transmit power.

    • Water velocity measurements for Signature VM 500 KHZ

      Profiling range* 70 m
      Cell size 0.5–4 m
      Max no. cells 256
      Min. blanking 0.5 m
      Minimum accuracy 0.3% of the measured value ± 0.3 cm/s
      Velocity resolution 0.1 cm/s
      Maximum sampling rate 6 Hz
      No. of beams 4 slanted at 25 degrees
      *) Maximum range depends on acoustic scattering conditions and transmit power.

    • Water velocity measurements for Signature VM 250 KHZ

      Profiling range* 200 m
      Cell size 1–8 m
      Max no. cells 256
      Min. blanking 0.5 m
      Minimum accuracy 1% of the measured value ± 0.5 cm/s
      Velocity resolution 0.1 cm/s
      Maximum sampling rate 2 Hz
      No. of beams 4 slanted at 20 degrees
      *) Maximum range depends on acoustic scattering conditions and transmit power.

    • Bottom velocity measurements for Signature VM 1000 KHZ

      Single ping std @ 3 m/s 0.5 cm/s
      Long-term accuracy ± 0.1% / ± 0.1 cm/s
      Minimum altitude 0.2 m
      Maximum altitude 30 m
      Velocity resolution 0.01 mm/s
      Maximum sampling rate 4 Hz

    • Bottom velocity measurements for Signature VM 500 KHZ

      Single ping std @ 3 m/s 0.5 cm/s
      Long-term accuracy ± 0.1% / ± 0.1 cm/s
      Minimum altitude 0.3 m
      Maximum altitude 70 m
      Velocity resolution 0.01 mm/s
      Maximum sampling rate 2 Hz

    • Bottom velocity measurements for Signature VM 250 KHZ

      Single ping std @ 3 m/s TBA
      Long-term accuracy TBA
      Minimum altitude 5 m
      Maximum altitude 205 m
      Velocity resolution 0.01 mm/s
      Maximum sampling rate 1 Hz

    • Depth measurements for Signature VM 1000 kHz

      No. of beams 1 vertical
      Maximum sampling rate 2 Hz
      Max. range 30 m
      Vertical resolution / accuracy 0.001 m / 1% of the measured value**
      **) Assuming a constant speed of sound

    • Depth measurements for Signature VM 500 kHz

      No. of beams 1 vertical
      Maximum sampling rate 2 Hz
      Max. range 70 m
      Vertical resolution / accuracy 0.001 m / 1% of the measured value**
      **) Assuming a constant speed of sound

    • Depth measurements for Signature VM 250 kHz

      No. of beams N/A*
      Maximum sampling rate N/A
      Max. range N/A
      Vertical resolution / accuracy N/A
      *) Depth measurement via the 4 slanted beams.

    • Echo intensity Signature VM 1000 and 500 kHz

      Sampling Same as velocity for slanted beams
      Resolution 0.5 dB
      Dynamic range 70 dB slanted beams
      No. of beams 4 slanted at 25 degrees
      Beam width 2.9°

    • Echo intensity Signature VM 250 kHz

      Sampling Same as velocity for slanted beams
      Resolution 0.5 dB
      Dynamic range 70 dB slanted beams
      No. of beams 4 slanted at 20 degrees
      Beam width 2.3°

    • Echosounder option for Signature VM 1000 kHz

      No. of beams 1 vertical
      Maximum sampling rate 2 Hz
      Max. range 30 m
      Resolution 3 mm - 0.25 m
      Number of bins 10,000
      Transmit pulse length 16 μs - 0.5 ms
      Transmit pulse Monochromatic or pulse compressed (25% BW)
      Resolution / dynamic range 0.01 dB / 70 dB

    • Echosounder option for Signature VM 500 kHz

      No. of beams 1 vertical
      Maximum sampling rate 1 Hz
      Max. range 70 m
      Resolution 6 mm - 0.5 m
      Number of bins 11,000
      Transmit pulse length 32 μs - 1 ms
      Transmit pulse Monochromatic or pulse compressed (25% BW)
      Resolution / dynamic range 0.01 dB / 70 dB

    • Echosounder option for Signature VM 250 kHz

      No. of beams N/A
      Maximum sampling rate N/A
      Max. range N/A
      Resolution N/A
      Number of bins N/A
      Transmit pulse length N/A
      Transmit pulse N/A
      Resolution / dynamic range N/A

    • Other, Signature VM ADCP

      Temperature sensor range /accuracy -4 °C to 40 °C / 0.1 °C
      Pressure Piezoresistive
      Standard range 0-300 m (inquire for options)
      Accuracy/precision 0.1% FS / better than 0.002% of full scale
      Compass and tilt Solid-state magnetometer
      Data recording 16 GB (inquire for options)
      Data cable 10 m Ethernet cable (inquire for options)
      IO Ethernet
      DC Input 15–48 V DC

    • Environmental, Signature VM ADCP

      Operating temperature -4 °C to 40 °C
      Storage temperature -20 °C to 60 °C
      Vibration IEC 60068-1/IEC60068-2-64
      EMC approval IEC 61000
      Depth rating 300 m – Bottom track is limited to surface vessels
      Connectors Straight fitted MCBH6F (Ethernet)
      Housing Small instrument housing
      Material POM with titanium fasteners and additional, reinforced transducer cups for VM 250

    • Processing unit

      Processor/memory Intel i5/8 GB
      Hard disk SSD, 500 GB
      Operating system Windows® 10
      Housing Half 19" 2 HE case
      Dimensions 265x110x340 mm
      Input 24 V DC, 20 W typical. (230|120 V AC adaptor supplied)
      Total weight 5.75 kg
      Connections Power, Signature ADCP, AN_GNSS, 2x HDMI, 2xLAN, 3x USB

    • Nortek Signature VM acquisition software

      Acquisition Signature VM - binary, GNSS compass - binary
      Timing < 0.6 s, IEEE1588/PTP for absolute timestamping (GNSS compass/Signature VM)
      Configuration Signature VM (partly)Advanced Navigation GNSS compass
      Display Vessel track in map, Bottom-track velocity, Bottom-track depth, Velocity magnitude and direction, Echo amplitude, Echo correlation, Vertical depth*, Vertical echogram; corrected relative volume backscatter (1000/500)*
      Status Signature VM + AN_GNSS compass
      Output Online: NMEA data formats. Offline: CSV, ASCII VMT, MATLAB, MATLAB VMT, MATLAB QRev, KML
      *) Signature1000 and 500

    • GNSS compass

      Brand and model Advanced navigation GNSS compass v2
      Position accuracy (with RTK) Horizontal: 0.01 m, Vertical: 0.015 m
      Heading accuracy 0.2°
      Supported navigation systems GPS L1_L2, GLONASS G1_G2, GALILEO E1_E5b, BeiDou B1_B2
      Heave accuracy 0.05 m
      Communication Ethernet 10/100
      Timing PTP, NTP timeserver functionality
      Protocol NMEA 0183, AN Packet Protocol, TSS1 Simrad, RTCM

    • AHRS option

      Accelerometer dynamic range ± 2 g
      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)3), ± 0.5° (static, ± 30°)
      Heading range / resolution 360°, all axes /0.01°
      Heading accuracy ± 3° (dynamic)3), ± 2° (static, tilt < 20°)
      Sampling rate Same as measurement rate

    • Toggle all

    • Main product

      01

      Signature1000 VM

      02

      Signature500 VM

      03

      Signature250 VM

    • Probe type /Head

      01

      5-beam head (1000, 500)

      02

      4-beam head (250)

      03

      5-beam head (adds 500 kHz center transducer for wave measurements) (250)

    • Housing

      01

      Short, no room for battery (external battery canister for bottom mount use)

    • Memory

      01

      16 GB SD card data logger

      02

      64 GB SD card data logger

      03

      128 GB SD card data logger

    • Pressure sensor

      01

      Pressure sensor 0-300 m, 0.1% (standard)

      02

      Pressure sensor 0-50 or 0-100 m, 0.1% (option)

    • Cables

      01

      AD2CP: 10 m Ethernet cable with MCIL6MP, Power/RJ45 at dry end (standard)

      02

      AD2CP: 10-100 m Ethernet cable (specify length) with MCIL6MP-PWR/RJ45

      03

      GNSS: GC-POE-CABLE-20M Ethernet cable for GNSS Compass 20 m (please inquire for other length)

    • Mounting

      01

      Vessel Mounted over the side

      02

      Vessel Hull mounted

      03

      Unmanned Surface Vehicle (USV) mounted (please inquire)

    • Other

      01

      Compass and Tilt sensor

      02

      AHRS

      03

      High Accuracy Heading GNSS (RTK)

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