Model 907E Multiplexer


The 907E is an expandable video, Ethernet and serial data multiplexer providing two (2) analog video channels, one (1) 10/100 Mbps Ethernet (10/100/1000 Mbps option) port and four (4) galvanically isolated RS-232/422/485 serial channels. This combination of signals makes the 907E an ideal single-card solution for applications with mixed signals and limited space while also supporting future growth using standard 907 expansion cards. In addition to on-board status LEDs for optical link, video, Ethernet and serial channels, the 907E includes real-time Ethernet diagnostics when used with the 907-DIAG-E card and graphical user interface (GUI) software.

Expansion cards may be stacked on the 907E to add up to 48 data channels in a variety of formats, including RS-232/422/485, TTL, Ethernet, CAN Bus, hydrophone, audio, responders, and various analog and digital sonar signals. The 907E runs from a +5 VDC power supply, as normally required for the 907 product family, but is also available in a version for +12 VDC power.

Small form-factor pluggable (SFP) optical transceivers allow for a wide variety of optical wavelengths, fiber types, and link distances. Common transceiver options provide optical power budgets of 16 - 24 dB with up to 10 km of singlemode fiber or 2 km of multimode fiber. Coarse wave division multiplexer (CWDM) transceivers and optical cards are used to combine the 907E with multiple 907 media converters or other multiplexers. Redundant fiber operation is also supported with splitters and fiber optic switch cards.

For systems with a low channel count, a single 907E card can replace separate video, Ethernet, data and optical CWDM cards.


  • High quality digitized video
  • 10/100 Mbps Ethernet (10/100/1000 Mbps option), low latency
  • Dip switch and software configurable serial channels, RS-232/422/485
  • Interchangeable SFP optical transceiver
  • Supports up to six (6) 907 expansion cards
  • Rugged design for harsh environments, including pressure tolerant version
  • Compatible with 907-DIAG-E diagnostic card and Graphical User Interface (GUI) software
  • On-board diagnostic LEDs for power, optical link, video sync present, serial data Tx/Rx, and Ethernet port status
  • Supports +5 VDC input or +12 VDC input voltage (not on same card)


  • Reduces cost and size of systems using video, sonar and serial controls
  • Supports a wide range of optical options, including CWDM wavelengths and multimode configurations
  • Simplifies troubleshooting with advanced diagnostics
  • Isolated Ethernet and serial data channels provide a more robust interface to external equipment

Typical Applications

  • Remotely Operated Vehicles (ROVs) and Tether Management Systems
  • Pipe Inspection Robots
  • Bomb Disposal Robots
  • Industrial Security Systems
  • Remote Monitoring Stations


Model 907E Specifications
Video No. of Channels 2
Digitization 8-bit
Bandwidth 6.0 MHz
SNR > 54 dB
Impedance 75 Ohms
Video Options 10-bit digitization
Ethernet No. Copper Ports 1
Data Rates 10/100 Base-T(X)
Latency 10 Base-T < 200 µs, 100 Base-TX < 32 µs
(not including fiber, ~5 µs/km)
Ethernet Options 10/100/1000 Base-T(X) (2.5 G version)
Data No. of Channels 4
Format RS-232/422/485 (switch selectable)
Data Rate RS-232: 115 kbps NRZ max.
RS-422: 2.5 Mbps NRZ max.
RS-485: 2.5 Mbps NRZ max.
Data Options Expansion cards
Power Voltage +5.0 VDC +/- 10%, regulated
Power Current 1.0 A typical (1.5 A max.)
Protection Overvoltage / undervoltage, reverse polarity
3 A time-delay fuse
Electrical Options + 12 VDC Input
Dimensions PC/104 (form-factor only)
Weight < 120 g (0.26 lb) including SFP
Mechanical Options Custom enclosures
Optical Fiber 1 or 2 singlemode (9/125 m) or multimode (50/125 µm)
Baud Rate 625 Mbaud
Wavelength 1310/1550 nm standard
(CWDM optional, 1471 - 1611 nm)
Optical Budget > 16 dB (20 dB typical)
Optical Options 1 or 2 singlemode (9/125 m) or multimode (50/125 µm)
LEDs Power good, power fault, optical link, optical fault, Ethernet port status, serial Tx/Rx, video status
Ethernet to PC Diagnostics from remote and console through 907-DIAG-E card at console
Optical Connectors 1 or 2 LC (SFP)
Video 2 x SMB
Ethernet 1 x RJ-45
Serial 2 x 8-pin Molex (Micro-Fit Series)
Power 2-pin Molex, 0.156 inch spacing
Connector Options 2-pin Wago (+12 VDC)
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
Environmental Options 3000/6000 psi pressure tolerant version,
extended temperature, stress screened or qualified


Technical Support

Telephone:  +1-902-468-2263