Reference Chirp Test for a Device
the voltage level is greater than 150 mV and does not respond when the voltage level is equal to or less
than 100 mV below the squelch level. The application provides the procedural steps to this test.
See Also
View Procedural Steps from the Application
Chirp Test for a Device
This test examines the basic timing and voltages of both upstream and downstream ports during the speed
detection protocol. To get the Chirp signal, hot-plug the unit under test (device) and measure the signalling
with single-ended probes on both lines. The application analyzes data for the following:
Reset duration
Chirp-K amplitude
Chirp-K duration
184 TDSUSB2 Universal Serial Bus Measurements Package
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