









VESSEL-MOUNTED CURRENT PROFILER
Signature VM Coastal - 1000|500|250 kHz
The Signature VM package delivers vessel-mounted AD2CP capabilities based on present-day technology
Need Help? Get in touch.
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
Temperature sensor range /accuracy -4 °C to 40 °C / 0.1 °C Pressure Piezoresistive Standard range VM 1000/ VM 500: 0-100 m (inquire for options), VM 250: 0-300m (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 20 m Ethernet cable (inquire for options) IO Ethernet DC Input 12–48 V DC -
Environmental
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 or 19" rack-mountable 1 HE Dimensions 265x110x340 mm or 480x45x325 mm Input 24 V DC, 20 W typical Total weight 5.75 or 3.80 kg Connections Power, Signature ADCP, AN_GNSS, 2x HDMI, 2xLAN, 3x USB, 1x RS-232 (optional) -
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 and AD2CP format. Off-line CSV, ASCII VMT, MATLAB, MATLAB VMT, MATLAB QRev, KML *) Signature1000 and 500 -
GNSS compass
Brand and model Advanced navigation GNSS compass Position accuracy (with dGNSS) / post-processed Horizontal: 0.6 m / 0.01 m, Vertical: 1.0 m / 0.02 m Heading accuracy / post-processed 0.2°/ 0.09° Supported navigation systems GPS L1, GLONASS G1, GALILEO E1, Beidou B1 Optional High Accuracy RTK variant GPS L1_L2, GLONASS G1_G2, GALILEO E1_E5b, BeiDou B1_ B2 Motion 9-axis IMU Communication Ethernet 10/100 Timing PTP, NTP timeserver functionality Protocol NMEA0183, AN Packet protocol, TSS1, Simrad -
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
-
Technical drawings
-
Approvals
-
-
-
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 0-100 m, 0.1% (standard) All other available Signature1000_500
02
Pressure sensor 0-300 m, 0.1% (standard) All other available Signature250
-
Cables
01
AD2CP: 20 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)
-