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Loopback test adapters

400 G Loopbacks

Our test adapters for QSFP-DD and OSFP interfaces feature:

  • 25G per lane NRZ and 50G PAM4 per channel leading to 200G / 400G bandwith
  • AC coupled high speed interfaces
  • setups of different power levels acc. to MSA
  • programmable power dissipation up to 20 W
  • communication over I2C Bus with up to 1 MHz
  • LEDs for module state indication
  • configureable low speed signals allowing testing of all control signals
  • housings including heatsink / airflow channels for thermal management
  • diagnostic monitoring of voltage and temperature
  • EEPROM MAP according to MSA
  • temperature rating up to 85°C
  • EMC/EMI optimized housing
  • hot pluggability

Check your ports with our loopbacks to be ready for 400 G and more!

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Besides our 400G loopbacks for QSFP-DD and OSFP, we also offer solutions for 10 to 100 G:

SFP Loopbacks

Our loopback test adapters for SFP interfaces support 10 GB and 25 GB total data rate. They are fully SFF compliant and provide a 2-wire serial communication interface for memory map loading. Our test adapters are hot pluggable and thermally designed to operate between 0° to 70 °C (32° to 158 °F).

Features

  • Available as 10 GB and 25 GB version
  • Extended plug cycle life because of a special contact surface
  • Loopback clamps available for 4-port testing simultaneously
  • Different pull-tap color options

Optional loopback clamp

Our 4-port loopback clamps enable simultanious testing of four ports at once. They possess all features of a single SFP loopback test adapter with an extra lock-protection to ensure safe locking during the measuring process.

QSFP-Loopbacks

Our QSFP loopback test adapters support 40 GB and 100 GB total data rate, as well as different power classes. They are available with an optional bicolor LED indicating the operating power mode and also shows if the module is selected by the switch. Our QSFP loopbacks are fully SFF compliant and provide a 2-wire serial communication interface for optimum temperature, voltage monitoring as well as memory map loading. Our test adapters are hot pluggable and thermally designed to operate between 0° to 70 °C (32° to 158 °F).

Features

  • Programmable power class
  • Available as 40 GB and 100 GB version
  • Optional diagnostic functions via LED (temp, voltage/load, comm)
  • Extended plug cycle life because of a special contact surface
  • Different pull-tap color options
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