QSFP-DD loopback adapter

Description

QSFP-DD Passive Loopback Adapter – High-Speed Port Testing for 400G Systems

The QSFP-DD (Quad Small Form-factor Pluggable Double Density) Passive Loopback Adapter is a compact, hot-pluggable diagnostic tool designed for testing and validating QSFP-DD 400G ports in high-speed networking equipment. It simulates a live transceiver connection without active components, enabling system-level testing of signal integrity, port functionality, and thermal behavior in switches, routers, and network interface cards.

Key Features:

• Form Factor:
  • Compliant with QSFP-DD MSA mechanical and electrical specifications
  • Fits seamlessly into any QSFP-DD port for testing and development
• Passive Design:
  • No active components or optical transceivers required
  • Ideal for low-power, low-cost testing environments
• High-Speed Support:
  • Supports data rates up to 400Gbps aggregate
  • Compatible with NRZ and PAM4 signaling for 25G/50G per lane testing
• Signal Loopback:
  • Internally loops back all high-speed lanes for full port verification
  • Enables link training, eye diagram analysis, and BER testing
• Thermal and Power Testing:
  • Simulates real transceiver power levels for thermal profiling
  • Optional power dissipation levels available for stress testing
• EEPROM Support:
  • Includes MSA-compliant memory map for host system recognition
  • Custom memory map options available for OEM integration
• Hot-Pluggable:
  • Safe to insert and remove during live system operation
• RoHS Compliant:
  • Manufactured in accordance with global environmental standards

Applications:

• Switch and Router Testing: Verifies QSFP-DD port functionality during production, QA, and R&D
• Network Interface Card (NIC) Validation: Simulates transceiver presence for firmware and driver development
• Thermal Simulation: Used in system-level thermal profiling and airflow optimization
• Automated Test Equipment (ATE): Ideal for high-volume manufacturing and compliance testing
• OEM & ODM Integration: Customizable for platform-specific diagnostics and branding