Dell Latitude CPi User Guide - Page 134

Network Interface Test Group

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Causes the drive to begin playing the first audio track on an audio CD. (To determine if the test passed, listen to the audio output of the drive.) NOTE: The Audio Output Test does not run automatically as part of the SCSI Devices test group; you must select this subtest individually. Eject Removable Media Test Causes a CD-ROM drive to eject its CD, or a SCSI tape drive to eject its tape cartridge. Display Information Test Displays information about the SCSI controller in an expansion device, the resources allocated to the controller, and a list of target devices attached to it. Network Interface Test Group The subtests in the Network Interface test group verify the basic operation of the network interface controller in the Dell Latitude C/Port APR or C/Dock Expansion Station. They test the controller's internal functions, including read and write access to its registers and internal transmit and receive (loopback) capability. These tests run only if the computer is docked. Why Run a Network Interface Test? Running a subtest in the Network Interface test group helps diagnose problems that may occur while using the computer in a network environment. Most network failures are caused by one of the following: Poor network connections Failure in the network controller Interrupt conflict (the controller trying to use the same IRQ line as another device) Software configuration error If a problem occurs while using the computer in a network environment, the network connection should be inspected. If the connection is good, run the Network Interface test group to determine if the network interface controller is functioning. If the test group is run in a loop, it can be used to detect intermittent failures. Subtests The four subtests in the Network Interface test group confirm the following functions: Registers Test Checks the interrupt generation capability of the controller by writing patterns to the writeable registers in the controller and by reading the patterns back to verify whether they are accessible and able to retain data. Loopback Test Places the controller into its various loopback modes and tests its ability to transmit and receive data.

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Causes the drive to begin playing the first audio track on an audio CD. (To determine if the test passed,
listen to the audio output of the drive.)
NOTE: The Audio Output Test does not run automatically as part of the SCSI Devices test
group; you must select this subtest individually.
Eject Removable Media Test
Causes a CD-ROM drive to eject its CD, or a SCSI tape drive to eject its tape cartridge.
Display Information Test
Displays information about the SCSI controller in an expansion device, the resources allocated to the
controller, and a list of target devices attached to it.
Network Interface Test Group
The subtests in the Network Interface test group verify the basic operation of the network interface controller
in the Dell Latitude C/Port APR or C/Dock Expansion Station. They test the controller's internal functions,
including read and write access to its registers and internal transmit and receive (loopback) capability. These
tests run only if the computer is docked.
Why Run a Network Interface Test?
Running a subtest in the Network Interface test group helps diagnose problems that may occur while using
the computer in a network environment. Most network failures are caused by one of the following:
Poor network connections
Failure in the network controller
Interrupt conflict (the controller trying to use the same IRQ line as another device)
Software configuration error
If a problem occurs while using the computer in a network environment, the network connection should be
inspected. If the connection is good, run the Network Interface test group to determine if the network
interface controller is functioning. If the test group is run in a loop, it can be used to detect intermittent
failures.
Subtests
The four subtests in the Network Interface test group confirm the following functions:
Registers Test
Checks the interrupt generation capability of the controller by writing patterns to the writeable registers
in the controller and by reading the patterns back to verify whether they are accessible and able to
retain data.
Loopback Test
Places the controller into its various loopback modes and tests its ability to transmit and receive data.