Connect-Tek USB-16 Manual de usuario descargar pdf (Pagina 43)

Host High Speed Electrical Test Procedure Revision 1.4

43

For Review and Discussion Only

Draft Document Subject to Revision or Rejection

Not For Publication or General Distribution

A.1.8 Host Test J/K, SE0_NAK (EL_8, EL_9)

EL_8 When either D+ or D- are driven high, the output voltage must be 400 mV ±10% when

terminated with precision 45 Ω resistors to ground.

Reference documents: USB 2.0 Specification, Section 7.1.1.3.

Port 1 2 3 4 5

Test D+ D- D+ D- D+ D- D+ D- D+ D-

TEST_J

TEST_K

 Pass

 Fail

 N/A

 Comments:

EL_9 When either D+ or D- are not being driven, the output voltage must be 0 V ±10 mV when

terminated with precision 45 Ω resistors to ground.

Reference documents: USB 2.0 Specification, Section 7.1.1.3.

Port 1 2 3 4 5

Signal D+ D- D+ D- D+ D- D+ D- D+ D-

Measure WRT

Ground (mV)

 Pass

 Fail

 N/A

 Comments:

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