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Altera_Forum
Honored Contributor I
933 Views

Cyclone 5 GX Starter Kit SMA Impedance

Hey all, 

 

I recently purchased the Cyclone 5 GX Starter Kit. I want to use the SMA transceiver ports to both output and receive that through an optical link. I also plan on using the transceiver toolkit to analyze the bit rate and BER. Could anybody tell me what the impedance of these ports are? Or how I can go about finding out what the impedance is looking into the SMA pins? I'm fairly new to hardware so I appreciate any help!  

 

Thanks
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4 Replies
Altera_Forum
Honored Contributor I
33 Views

By the way, why do you need the impedance value? If you are using XCVR toolkit, it will help to find the optimal analog settings according to your setup.

Altera_Forum
Honored Contributor I
33 Views

The impedance should be 100 Ohm differential.

Altera_Forum
Honored Contributor I
33 Views

 

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The impedance should be 100 Ohm differential. 

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Thanks for sharing the info.
Altera_Forum
Honored Contributor I
33 Views

I think most of the SMA cables are of 50 Ohm termination.This is why the SMA connector on devkit are of 100 Ohm differential.

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