Our loopback test adapters enable cost-efficient methods for SFP28 port testing of high performance switches and server blades. Loopbacks route data from the host back to the port, closing the communication loop for testing purposes. During testing, a potential data loss, as well as temperature and voltage levelling can be monitored and recorded to its customized loopback memory map. SFP28 loopback test adapter support 25Gbps total data rate, as well as different power classes. It is available with an optional bicolor LED light indicating the operating power mode. Our SFP28 loopbacks are fully SFF compliant and provide a 2-wire serial communication interface for memory map loading and diagnostic functions. This test adapters is hot pluggable and thermally designed to operate between 0° to 70 °C (32 ° to 158 °F). Optional loopback clamp 4-port loopback clamps enable simultaneous testing of four ports at once. They possess all features of a single SFP56 loopback test adapter with an extra lock-protection to ensure safe locking during the measuring process.

• Available as 10Gbps and 25Gbps version
• Optional diagnostic functions via LED (temp, voltage/load, comm)
• Extended plug cycle life
• Switchable power-classes
• Monitoring functionality for system debugging
• Switchable low speed signal interface
• Different pull-tab color option