Siglent FX-USB2 USB 2.0 test fixture

Controller: In device tests and hub tests, it controls DUT or hub into test mode, reset, suspend, etc. Also it is the power supply port for the entire fixture.

SQ Device: HS signal quality, packet parameters, suspend, reset, and not-driven J/K voltage test modules for upstream facing ports.

Sensitivity Receiver: External signal input point in upstream facing port trigger sensitivity test.

Droop: Provides 100mA dynamic load for downstream facing port droop.

Trigger: Provides test point for downstream facing port packet parameters, suspend, repeat, FS, LS, drop.

Inrush: The upstream facing port inrush test module, and assists the Trigger module to complete the FS and LS tests.

SQ Host: Downstream facing port HS signal quality test module