9402 maximum Output Current for driving Broadcom HFBR-1521 LWL Transmitter

[Logtrop]

Hello,

I would like to connect a Broadcom HFBR-1521 LWL Transmitter to the NI 9402 DIO in a cRIO-9063 cabinet.

What is the maximum Output Current of the 9402?

If it is below 20mA I'm going to use an additional driver.

Best Regards,

Chris

[crossrulz · Accepted solution]

Most DIO only handle more around 4mA.  From what I am seeing in the spec, I would say the 9402 is rated for 2mA.  So you will definitely need a buffer circuit.