06 | Keysight | N5399C, N5399D HDMI Electrical Performance Validation and Compliance Software - Data Sheet

Using the HDMI EPVC Software

The HDMI software logically guides the user through the test

process. The graphical user interface is designed to glean test

process and device under test information from the user to

efficiently carry out the testing. (Refer to Figure 5.) The user

will know the device type (which determines the test suite) and

which specification applies (HDMI 1.4b or HDMI 2.0). Though

the specifications for HDMI 2.0 and HDMI 1.4b are different, the

selection of HDMI 2.0 will reveal both 1.4b and 2.0 tests, as seen

in Figure 8.

Device Definition

The device definition screen lets users enter the full functionality

of the device for the purpose of creating the test plan. A test

plan is important in order to guide the test process to test at

the specific data rates and test configurations (single-ended vs.

differential) that are required.

This screen enables the standard DUT identification and test

comments, however, the new key feature is the ability to define

the timings/resolutions at which to test. You can enter these

resolutions by:

1. Using the capability declaration form (CDF)

2. Using a previously stored template

3. Using the default setup (which you can define)

4. Adding your own custom timing

5. Independently editing any of these using the check boxes

in the pixel clock tabs at the top of the bottom section

Once the resolution/timing table is defined, it can be stored as a

template or as a default state. If defined as default, it will show up

on all future application start-ups.

Figure 6. Device definition screen with timings and resolutions table.

New to the Keysight HDMI validation software are the device

definition and connection setup tabs in the setup screen. As

seen in Figure 5, upon start up, these tabs are labeled with a

red status, which indicates that the user has to complete some

actions before proceeding. Also included in the setup screen are

transfer function generation and probe offset calibration. The

probe offset calibration is not new and should be run periodically

to make precision measurements, particularly when measuring

the eye at TP2. The offset calibration is for HDMI measurements

only and will result in the elimination of offsets in the differential

measurements made by the software. The transfer function

generation feature allows the user to create new filters that may

be needed when performing characterizations with different

cable models, different fixtures, equalization and skew. Generally,

the filters, or transfer functions, that are required are already

provided and the user does not have to create any.

Figure 5. Entry screen for HDMI software.