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OP5707-IO Front Interface

In the front of the unit, the OP5707-IO 2nd Edition has one round button with an integrated LED indicator (B), while the 1st Edition has a toggle switch with LED indicator (B) above.

OP5705-IO 2nd Edition with one round button and an integrated DEL indicator (B)

OP5707-IO 1st Edition with a toggle switch and a LED indicator (B)

A. RJ45 connector panels provide connections to monitor signals from I/O modules.

  • Each connector is linked to one I/O module on the carrier board.
    • Analog I/O modules (channels 0-15) will use only the first column of connectors.
    • Digital I/O modules will use both columns:
      • Channels 0-15 in the first column
      • Channels 16-31 on the second column
  • See the RJ45 Connectors section in the IO Connectors page for detailed information.

B. Power switch/button with LED indicator

C. SFP (Small Form-factor Pluggable) ports controlled from the FPGA, for MUlti-System Expansion (MuSE) communication with other FPGA simulators or with third-party devices.

  • Each socket controls one communication link.
  • SFP transceivers and fiber optic cables must be selected according to the type and speed of the communication protocol implemented in the FPGA (OPAL-RT MuSE link or third-party device connection).
  • MuSE link requires specific SFP and cable:
    • SFP: Avago AFBR-57R5APZ
    • Cable: LC-LC multimode 850 nm optical fiber
  • The LEDs (light pipes) associated with the selected channel will light to indicate the channel is selected.
  • LEDs are arrow-shaped to indicate the channels to which they are associated.
    • The LED upward arrow points to the top channel
    • The LED downward arrow points to the bottom channel (see below)



State Description

LED display

green arrow down or green arrow up

red arrow down or red arrow up



ON: SFP is inserted | OFF: No SFP is present | BLINK: Channel active

OFF: Connection OK | ON: transmission fault | BLINK: Reception loss

D. Synchronization connectors (fiber optic and audio) and a series of four LEDs on the front panel display the device status.


Power On

After Load & During Execution

After Reset











Orange = Slave






*The color of the LED on power-on depends on the default FPGA configuration:

  • When the FPGA board is programmed in Slave synchronization mode, the LED will be orange.
  • When it is programmed in Master mode, the LED will be green.

**Tx and Rx provide synchronization information.

  • When transmitting the synchronization signal, the Tx LED will be green.
  • When receiving the synchronization signal, the Rx LED will be green.

E. RJ45 connectors with mini-BNC terminals for monitoring.

  • Mini-BNC connectors allow for quick cable connections to monitoring devices (such as an oscilloscope).

F. USB JTAG for VC707 FPGA (for OPAL-RT technicians’ use only).

OPAL-RT TECHNOLOGIES, Inc. | 1751, rue Richardson, bureau 1060 | Montréal, Québec Canada H3K 1G6 | | +1 514-935-2323