907-ECL (Sonar)


907-ECL (Sonar) Media Converter

The 907-ECL (Emitter Coupled Logic) media converter provides optical transmission of high speed data formats typically used by sonars over a singlemode or multimode fiber. This card may be switch configured to support single-ended and differential ECL/PECL signals.

For subsea applications, 907-ECL cards are typically connected to a sonar head at the remote end and the sonar processing unit at the console end. Supported sonar devices include the Reson 81XX Series, and the Kongsberg EM2000 and EM3000.

The 907-ECL card is available as a standalone card or as a CWDM stacking version for integration with a 907 multiplexer or other devices.


  • ECL/PECL inputs and outputs are AC-coupled, 75-ohm impedance
  • On-board diagnostic LEDs for power and optical link
  • External diagnostic LED connector
  • Compatible with 907-DIAG-E diagnostic card and Graphical User Interface (GUI) software
  • Interchangeable SFP optical transceiver
  • Rugged design for harsh environments, including pressure tolerant version


  • Provides real-time, low latency, ECL/PECL signal transmission
  • Extends sonar telemetry up to 10 km
  • Simplifies troubleshooting with advanced diagnostics
  • Supports a wide range of optical options, including CWDM wavelengths and multimode configurations
907-ECL Specifications
No. Channels 1
Format ECL, PECL and pseudo-ECL
Data Rate 30 - 150 Mbaud
Impedance 75 Ohms (standard)
50 Ohms (option available)
Latency < 1 μs (not including fiber, ~5 µs/km)
Optical Fiber 1 singlemode (9/125 µm) or multimode (50/125 µm)
Baud Rate 30 - 150 Mbaud
Wavelength 1310 nm standard
(CWDM optional, 1471 – 1611 nm)
Flux Budget > 20 dB (24 dB typical)
Power Voltage +5.0 VDC ±10%, regulated
Power Current 0.5 A typical (0.7 A max.)
Power Used 2.5 W typical (3.5 W max.)
Dimensions PC/104 (form-factor only)
Weight < 120 g (0.26 lb) including SFP
LED Status 1 x 4-pin Molex connector
Optical LC (SFP)
ST/PC (fiber bushing)
Power 2 pin Molex, 0.156 inch pin spacing
Temperature -10°C to +60°C (operational)
-40°C to +85°C (storage)
Humidity 85% RH, non-condensing
Vibration 5 g, 25 - 1000 Hz, 3 axes
Shock 30 g, 11 ms half sine, 3 axes

Contact Us

Technical Support

Telephone:  +1-902-468-2263

Typical Applications

  • Remotely Operated Vehicles (ROVs)
  • Pipe inspection robots
  • Sonar systems
  • High speed data links