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Test environment setup and test selection (continued)

The U7232A software guides you

through selecting important test

process information. These are briefly

described below.

• Device ID: enter the device name

and other pertinent information.

• Operator ID: for compliance test

houses to identify the operator for

QA process.

• Project ID: for compliance test

houses that identify projects by

number, this enables the report to

carry a key identification number to

a contract.

• Device type: allows you to select

between cable test, sink test and

source test suite.

• Test type: define whether tests will

be single-ended or differential, see

Figure 3.

• Test mode: select between

compliance conditions and user-

specified modes.

• DUT definition: select the

capabilities of the DUT you wish

to test, see Figure 4.

• Test fixture selection: select the

test fixture used, see Figure 5.

• Connection type: single-ended

versus differential connection:

choose between using two

channels of the scope to make a

differential measurement using an

‘A minus B’ technique or by using

a differential probe on each scope

channel for each lane, see Figure 5.

• Number of channels: you may

choose to test a 1, 2, 4 channel

connection, see Figure 4. (Note:

differential connection allows full

lane selection, while single-ended

can only support testing 1 or 2

lanes.), see Figure 5.

• Oscilloscope connection: this screen

allows you to assign oscilloscope

channels and device lanes to test,

see Figure 8.

For convenience, these parameters can

be saved in a template file. In order

to execute your planned testing, the

test software needs to know what you

want to test and how you want to test.

For instance, you have a source device

and want to test the differential tests

in compliance mode. This information

is conveyed to the user and easily

selected in the test process setup

screen as shown in Figure 3.

Figure 3. U7232A Test process setup screen: select test objectives and

device and test type

1 2 3 4 5 6 7 8 9 ... 15 16

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