Pc-Check® UEFI

Test Result

USB NRZI Glitch Zero Failure Information

Test Group 3102

Device USB

This group is for Universal Serial Bus (USB). USB is a specification for the cables, connectors and protocols that provide convenient and flexible serial communication with connected devices at a variety of speeds. It is typically used to connect external peripheral devices ranging from a mouse to a back-up storage solution.

This group is only available if Eurosoft USB hardware is detected when the program initialises. It will not be available if there are no suitable USB devices connected to the USB ports.

Each device identified by this group corresponds to a Eurosoft USB Test Device or Eurosoft Program Device. It is not however this device which is tested, but the connectivity to it, comprising of controllers, traces, cabling and port.

Note: This test group requires enhanced Eurosoft USB Test or Program Devices, earlier Eurosoft USB Test Devices are not recognised in the UEFI product. The required plug type can be recognised by the presence of a file system partition.

Note: Devices should not be removed or inserted while diagnostics are running.

Test Number 403

Test Name NRZI Glitch Zero

NRZI Glitch Zero Test. Hi-speed data transfers self-clock using transitions contained within the data transmitted. The encoding method is called non-return-to-zero-inverted (NRZI) encoding. To ensure sufficient transitions, additional bits are added, known as bit stuffing. This test uses a stable stream of maximum bit stuffed data with randomly occurring zeros.

Estimated Test Time 1m to 3m

ERRORCODES & TROUBLESHOOTING

The test cannot be executed because something is not supported. CODE="0x00/3FF"
TROUBLESHOOTING0: Ensure the proper Test Device is inserted to the USB port. Try re-plugging the device. Some BIOS require for Test Devices to be inserted prior to booting the diagnostics while power is off.

The specific test is unavailable. CODE="0x01/3FF"
TROUBLESHOOTING0: Ensure the proper Test Device is inserted to the USB port. Try re-plugging the device. Some BIOS require for Test Devices to be inserted prior to booting the diagnostics while power is off.

A read error occurred. CODE="0x02/3FF"
TROUBLESHOOTING1: An error occurred while reading the Test Device. There may be a hardware fault. You can try re-plugging the device. Some BIOS require for Test Devices to be inserted prior to booting the diagnostics while power is off. "

The USB test failed. CODE="0x03/3FF"
TROUBLESHOOTING2: The port appears to be faulty. You can try re-plugging the Test Device. Some BIOS require for Test Devices to be inserted prior to booting the diagnostics while power is off.