The OP8216 is an 1U fiber optic channel interface output (TX) or input (RX) depending on selected configuration.

The board holds optical transceivers and converts logic signals into fiber optic signals (transmit channels), and fiber optic signals into digital logic signals (receive channels).  Hence it ensures optical digital input and output isolation between the OPAL-RT simulator and the unit under test. 

The transceivers are compatible with plastic optical fiber cables (650nm wavelength). Their frequency range is DC to 25 MHz, corresponding to a 50 Mbps baud rate, for distances up to 50 meters. The absolute minimum for transmission (Tx) high and low pulse width is 20ns. This frequency range means the board can be used as a standard digital I/O card with isolation (DC mode), or for low-speed communication protocols. 

Possible configuration are :

Specifications

Channel Description

Example Calculation for Optical Power Budget

In order to ensure that the OP8216 is compatible with different equipment and fiber optic set-ups, an optical power budget must be established and calculated.

An optical power budget involves knowing the following:

• Fiber optic link distance.
• Fiber optic link attenuation and loss factor. 
• Connectors and amplifiers throughout the fiber optic link.
• Receiver sensitivity.
• Transmitter power.

For the OP8216, the transmitter has an optical output power of -4.5dBm (min) to +2dBm (max) [for 1mm POF].

The receiver has a sensitivity of -22dBm to +2 dBm.

For 1mm POF, worst-case attenuation can be estimated to be 0.27 dB/m from -40C to +85C at 660nm.

These numbers can be used to present an example of an optical power budget, where the OP8216 transmitter is connected to the OP8216 receiver through a 50m, 1mm POF link. 

Assuming there are no connectors or amplifiers, and that we are using a 50m fiber optic link between the OP8216 transmitter and receiver, we can calculate:

0.27 dB/m * 50m = 13.5 dB losses through 1mm POF.

-4.5 dBm - 13.5 dB = -18 dBm at the receiver.  -18 dBm is within the receiver sensitivity specification, so the link will work properly.

We can thus confirm that this example 50m link would be compatible with the OP8216 transmitter and receiver.

NOTE:  Presented values are used as an example calculation only.  Please replace values with measured and/or known values for your specific application.

OP8216 - 16 Channels Output (Tx) - Front Plate

OP8216 - 16 Channels Input (Rx) - Front Plate

DB37 Pins Assignment

J1 - Power Connector Pin Assignment

OP8216-16-1 PCB Connector View

OP8216-16-2 PCB Connector View