FAQ: How do I configure my network settings to connect to the EyeLink Host PC?
#1
The Stimulus Display PC's IP address and subnet must be in the same range as the Host PC for the two computers to properly communicate in a peer-to-peer fashion.

The default IP address of the EyeLink Host PC is 100.1.1.1 and thus the typical IP address of the stimulus Display PC should be 100.1.1.2 and the subnet mask should be 255.255.255.0. Also all secondary network connection (wifi, secondary ethernet, etc...) should be disabled during data collection. Also any network security or network monitoring software should be properly configured to leave the Host PC to Display PC unfettered or disabled.


If the Display PC is a Windows 10 PC:
  1. Connect the Host PC to the Display PC via an single ethernet cable with no device in between.
  2. Go to the Control panel -> Network and Sharing Center -> Ethernet (1).
  3. Click the Properties button to open the Ethernet Properties (2).
  4. Select the Internet Protocol Version 4 (TCP / IPv4) item (3).
  5. Click the Properties button to open the TCP / IPv4 Properties (4).
  6. Select the "Use the following IP address:" and enter 100.1.1.2 for IP address and 255.255.255.0 for subnet mask (leave the Default gateway blank).
  7. Click OK to apply changes.
   
If the Display PC is a Windows 11 PC:
  1. Connect the Host PC to the Display PC via an ethernet cable.
  2. Go to the Start Menu -> Settings -> Network and Sharing Center (1) -> Advanced Options (2).
       
  3. Under the Advanced Network settings click the arrow next to your ethernet device to expand its options (1).
  4. Under "more adapter options" and select Edit (2).
  5. Double click on the "Internet Protocol Version 4 (TCP/IPv4)"
  6. Select the "Use the following IP address:" and enter 100.1.1.2 for IP address and 255.255.255.0 for subnet mask (leave the Default gateway blank) (4).
  7. Click OK to apply changes.
   

If the Display PC running macOS:
  1. Go to the System Preferences -> Network control panel.
  2. Change the Network priority to make sure our dedicated ethernet connection is the top priority by selecting the Action button in the bottom left hand corner and choose Set Service Order. In the resulting window, drag the dedicated Ethernet link to the top of the list.
  3. Click OK to accept the new settings.
       
  4. Select your dedicated Ethernet adapter.
  5. Change the "Configure IPv4" drop down to "Manually."
  6. Set the IP address to 100.1.1.2 and the subnet mask to 255.255.255.0 (you can leave the router and DNS fields blank).
  7. Click "Apply" to save settings.
   

Finally, click the Advanced tab at the bottom of the page pictured above and go to the Hardware tab. Make sure the Duplex setting is set to "full-duplex" (note that it should not be 'full-duplex with flow control').

If after following these instructions there are still connectivity issues between the Mac Display PC and an EyeLink 1000 or EyeLink II system, then it is also suggested that you configure the "Speed" setting to 100baseTX in the Hardware tab. While the modern hardware of our EyeLink 1000 Plus and Portable Duo systems will support 1000 Mbps connection speeds, the EyeLink 1000 and EyeLink II systems may not provide this compatibility. We've most frequently seen that Mac OS computers will by-default expect to make a connection at the maximum supported 1000 Mbps speed unless it is specifically configured for 100 Mbps.


If the Display PC is running Ubuntu Linux:
  1. Go to the desktop launcher and search for Settings:
       
  2. In the Network tab (1), click the setting wheel under the Wired section (2).
  3. Then under the IPv4 Tab, click the Manual Option (3).
  4. Enter 100.1.1.2 in the Address Bar and enter 255.255.255.0 in the Netmask Bar (You can leave the Gateway Bar empty).
  5. Click "Apply" to apply changes.