USB2.0 DCR

FS-DCR Calibrated Device for DCR testing Fixture

€ 510,00

The USB2.0 specification doesn’t define the DC resistance (DCR) on the D+ and D- data path between the silicon and the connector. The lack of a DCR requirement in the USB2.0 specification may cause false disconnect events when high-speed capable USB2 Hosts and Devices are connected. The “USB 2.0 DC Resistance” ECN within the USB2.0 specification is covering this. The latest USB 2.0 Electrical Compliance Test Specification | USB-IF add the DCR requirements. This test is required for all user accessible USB up and downstream ports supporting USB2.0 High Speed.

 

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Description


The FS-DCR Test Fixture is used to measure the USB2.0 Cables, (embedded) Host and Hubs. Note that all USB3.2 and USB4 products need to be backwards compatible and therefore also need to meet these requirements.

The fixture can be used for:

  • Cable DCR measurement
  • Downstream DCR measurement
    • False Disconnect
    • False Connect

Test steps can be founded here USB 2.0 DCR MOI 1.0

For upstream DCR measurements use the  FS-HUCR USB 2.0 Type-C® High Speed Signal Quality Test Fixture (Receptacle) 

This fixture is USB-IF approved!

 

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