FAQ: Why does it say "Cable Fault" on the screen?

[Sam]

It's normal to see a "Cable Fault" message appear briefly in the top-right corner of the EyeLink Host PC screen during startup. This just means the system is taking a moment to initialize and verify its connection to the Display PC.

However, a persistent "Cable Fault" message indicates that the Host PC cannot detect a connection to the Display PC.

If the message does not go away, follow these troubleshooting steps in order.

1. Check the Physical Connection
   Ensure the Ethernet cable connecting the two computers is properly set up.
   • The cable must be securely plugged in at both ends.
     
   • It must be a direct connection between the Host PC and the Display PC.
     
   • The connection should not pass through a router, network switch, or hub.
     
2. Verify Network Settings
   If the physical cable is connected correctly, the final step is to verify that the IP address and other network settings are configured properly on your Display PC.
   • Follow the detailed instructions in this guide: How do I configure my network settings to connect to the EyeLink Host PC?