Specifications

3
The DisplayPort Electrical Performance
Validation and Compliance software
now allows you to define the DUT
capability and select test environment
variables to better suit your testing
goals for speed and cost. The setup
process begins with the Setup entry
screen (shown in Figure 1). This screen
enables selection of the DisplayPort
Compliance test specification (for
instance 1.1a or 1.2b as shown in
Figure 1) and test groupings for
hi-speed video lane testing (Physical
Layer Tests), AUX Channel and whole
device characteristics (AUX PHY
and Inrush Tests), or HDMI over the
DisplayPort interface (DualMode
tests). This screen will also let
you choose between exposing just
normative (mandatory) tests or all
tests: normative and informative. The
bottom portion of the environment
Set Up tab is dedicated to automation
through the AUX test mode. After
making the appropriate selections
for you testing, the setup continues
with DUT characteristics entry and
connection specifics when the Test
Setup button is selected.
The Test Setup loop presents a series
of screens that allow the user to
enter the key test and environment
information because there is a
wide range of test connections and
optional performance allowed for in
the DisplayPort specification. Some of
this test process information is briefly
described below.
Figure 1: DisplayPort Test Environment Setup
Test environment setup and test selection
● 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. The most
common selection is source
testing.
● Test Type: define whether
tests will be single ended or
differential. See Figure 2.
● DUT Definition: select the
capabilities of the DUT you wish
to test. See Figure 3
● Test Fixture Selection: select the
test fixture used. See Figure 4.
● Connection Type: Single-Ended
vs. Differential connection:
choose between
using two channels of the
scope to make a differential
measurement using an ‘A minus
B’ technique or by using
differential probe on each scope
channel for each lane, see
Figure 4.
● Number of Channels: you may
choose to test 1, 2, or 4 channel
connection. (Note: Differential
connection allows full lane
selection, while Single-Ended
can only support testing 1 or 2
lanes.). See Figure 4.
● Oscilloscope Connection:
this screen allows you to assign
oscilloscope channels and device
lanes to test. See Figure 5.