Loopback

T-25-S-LB-025

25G Loopback Testers — SFP56

Data Rate
25G
Form Factor
SFP56
Power
2.5W

Overview

The T-25-S-LB-025 is a 25G loopback testers in SFP56 form factor. Programmable loopback modules for port validation and traffic simulation across all major form factors. Available in passive (0W) and active variants with optional retimer-based equalization.

Highlights

  • 25G to 1.6T Coverage

    Full speed range from SFP56 25G up to OSFP 1.6T — one supplier for your entire test lab.

  • Passive & Active Variants

    0W passive loopbacks for simple port validation; active variants with up to 60W for signal conditioning.

  • Programmable

    Programmable active variants support custom test configurations and monitoring.

  • Active Linear Equalized

    1.6T OSFP-CT with active linear equalization for advanced signal integrity testing.

  • Active Retimered

    Retimer-based loopbacks for 800G and 400G — simulate real-world retimer performance.

  • All Major Form Factors

    OSFP-CT, OSFP-FT, OSFP-RHS, OSFP-XD, QSFP-DD, QSFP112, QSFP56, SFP56.

Key specifications

Product Type
Loopback Testers
Data Rate
25G
Form Factor
SFP56
Standard
IEEE 802.3cd, SFF-8472
Power
2.5W
Programmable
✓

Features

  • 25G to 1.6T Coverage: Full speed range from SFP56 25G up to OSFP 1.6T — one supplier for your entire test lab.
  • Passive & Active Variants: 0W passive loopbacks for simple port validation; active variants with up to 60W for signal conditioning.
  • Programmable: Programmable active variants support custom test configurations and monitoring.
  • Active Linear Equalized: 1.6T OSFP-CT with active linear equalization for advanced signal integrity testing.
  • Active Retimered: Retimer-based loopbacks for 800G and 400G — simulate real-world retimer performance.
  • All Major Form Factors: OSFP-CT, OSFP-FT, OSFP-RHS, OSFP-XD, QSFP-DD, QSFP112, QSFP56, SFP56.

Purchase & availability

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