DVL A125

The DVL-A125 is the world’s smallest long range Doppler Velocity Log.

With an extremely wide operating altitude of 5 cm to 125 meter, the A125 is the “swiss army knife” of DVLs!

Offering a very high maximum velocity of 9 meter per second, the A125 is the ideal DVL not only for ROVs but also for USVs and fast AUVs.

Product presentation


5 cm - 125 meters


420 kHz

Sensor Assist

AHRS included
(for dead reckoning)

Long Term Accuracy

±1.01% (standard)
±0.1% (performance)

  • Version
  • Depth Rating

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9,900.00 9900.0 USD 0.00

kr 0.00

SKU: WL-21037-2-S-600
Technical specifications
Device diameter 125mm
Device height 30mm
Device weight (air) 986 grams
Device weight (submerged) 730 grams
Depth rating 600 or 3000 meters

Operating temperature -5 to 60 °C
Electrical / Interface
Input voltage 10-30 V
Power consumption 0.25 A at 12V
Power-on current surge 1.25 A at 12V
Physical interface

8 wires (pwr/serial/Ethernet)
3 meter cable (PUR 7.8 mm diameter) with interface module

Indicator Status LED (Power, Lock)

UART 115200 baud serial 3,3V


Water Linked API and PD6  URL

Acoustic / Performance
Transducer frequency 420 kHz
Transducer setup 4-beam convex Janus array
Transducer beam angle 22.5 degrees
Ping rate 1-26 Hz (adaptive to altitude)
Sensor assist Integrated AHRS/IMU (Yost Labs TSS-NANO)
Min altitude 5 cm
Max altitude

125 meters
(Performance at altitudes > 110 meter is dependent on seabed conditions, salinity levels etc.)

Max velocity 9 m/s
Velocity resolution 0.1 mm/s
Long term accuracy

±1.01 % (Standard version)
±0.1 % (Performance version)

CE Yes

Alternative Products:

[WL-21035-3-S-300] DVL A50 (Standard, 300m)
0.00 6,900.00
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