Agilent Technologies W2642A Manuale utente

W2642A Quick Start Guide Rev. AP12

Page 1

Rev. AP12 W2642A Quick Start Guide

Chapter 1 - Getting Started

Cha

ter 1 – Gettin

Started

This chapter provides an overview of the W2642A and its role in supporting DisplayPort test automation with

Agilent test instruments.

DisplayPort Test Automation

Agilent Technologies and Quantum Data have partnered to provide a full solution for DisplayPort compliance

testing. Agilent’s AUX Channel Controller has been incorporated into the 882E product (offered as the W2642A

by Agilent) for purposes of supporting physical layer test automation for the DisplayPort main link using Agilent

equipment. Incorporating the AUX Channel Controller into the Quantum Data 882E product enables customers to

have a complete solution for compliance testing: physical layer testing for the main link, link layer compliance

testing (offered as an option to the 882E) and HDCP compliance testing (also offered as an option to the 882E).

A key contribution of the DisplayPort specification is the potential to fully automate testing of transmitters,

receivers, and branch devices (at the physical and link layer) through AUX channel control of the device under

test. The overall objective of the AUX Channel Controller is to support the test needs of DisplayPort

manufacturers and ensure that they can get the complete set of design validation and compliance test tools

essential for DisplayPort product development.

Additional Compliance Options

You can add the link layer and HDCP compliance test options to your W2642A by contacting your Quantum Data

distributor. Refer to “Chapter 5 - Application Extensions” on page 32 for more details on these options. The

instructions provided in this Quick Start Guide pertain specifically to the use of the W2642A (882E-DP) as a

DisplayPort AUXiliary Channel Controller. Instructions for operating the additional application options for the

W2642A (882E-DP) can be found in the User Guide which is available on the downloads page of the Quantum

Data website:

http://www.quantumdata.com/downloads/index.asp.

What’s in the W2642A shipping box?

You will find the following items in the W2642A shipping box:

W2642A (882E with the Agilent AUX Channel Controller function).

Adapter board (P/N 99-00607) – used for connecting the W2642A to the Agilent W2641A DisplayPort Test

Point Access Adapter.

Ethernet crossover patch cable (P/N 30-00151) – used for connecting to the 882 over the LAN interface.

Serial null modem cable (P/N 30-00124) – used for connecting to the 882 over the serial interface.

Detachable power cable – used for powering the W2642A.

DisplayPort cable (P/N 30-00162) – used for connecting to the 882 over the serial interface.

ESD warning sheet (P/N 68-00204) – used for protecting the DisplayPort interface against static discharge

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W2642A Quick Start Guide Rev. AP12

Page 3

This Quick Start Guide (P/N 68-00211)

Introduction to the W2642A

The model W2642A is a test instrument based on the Quantum Data 882E. The W2642A incorporates the

Agilent-created AUX Channel Controller functionality for automated testing of the physical layer of the DisplayPort

main link. All other functions are disabled but can be added by contacting Quantum Data.

Connectors

The video interfaces on the W2642A (882E) applicable to DisplayPort are shown below.

Figure 1-1 – W2642A Back Panel

Interface Description

DISPLAYPORT AUX CHANNEL ANALYZER TO SOURCE connector enables you to monitor the AUX

channel transactions with the Quantum Data ACA option (not provided with the base W2642A). A DisplayPort

cable is connected from a DisplayPort source device to this port.

DISPLAYPORT AUX CHANNEL ANALYZER TO SINK connector enables you to monitor the AUX channel

transactions with the Quantum Data ACA option (not provided with the base W2642A). A DisplayPort cable is

connected from a DisplayPort display device to this port.

DISPLAYPORT TX connector outputs DisplayPort-compatible digital video signals. This connector is used

when testing a DisplayPort sink device during automated testing. Pattern generation is not provided with the

base W2642A but it can be added as an option. It emulates a DisplayPort source device.

DISPLAYPORT RX connector receives DisplayPort-compatible digital video signals. This connector is used

when testing a DisplayPort sink device during automated testing. It emulates a DisplayPort sink device. Signal

analysis is not provided with the base W2642A but it can be added as an option.

Administrative Connectors Description

The following connectors are found on the lower half of the back panel of the 882E frame.

Rev. AP12 W2642A Quick Start Guide

SERIAL connector provides RS-232C serial data communication interface for the generator. This interface is

used for the command line interface.

DEBUG connector is for Quantum Data use only.

ETHERNET connector enables you to connect to the instrument through an IP session for controlling the

AUXiliary channel through the Agilent test automation systems:

oThe Agilent U7232A Automation Software

oThe Agilent N5990A Automation Software.

oThe Agilent W2642A Graphical User Interface

The Ethernet interface is also used when upgrading the generator.

GPIB connector provides IEEE-488 GPIB interface to the generator (882 only; not provided on 881

generators).

Front panel

This subsection describes the front panel interface for operating the generator. All features of the 882E not related

to the AUX Channel Controller function have been disabled in the base W2642A product. Therefore many of the

W2642A menus for the standard 882E functions have been disabled. However the administrative functions are

still available. You will only need to use these front panel keys to specify the IP address. The front panel keys are

shown below.

Figure 1-2 – W2642A Front Panel

Upgrading the W2642A

When there is a new version of the AUX Channel Controller software available for the W2642A, you may want to

upgrade. The new software can be found on the Quantum Data downloads

page: www.quantumdata.com/downloads/index.asp. The upgrade procedures are provided in the 882E User

Guide also available at the link shown above.

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W2642A Quick Start Guide Rev. AP12

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Rev. AP12 W2642A Quick Start Guide

Chapter 1 - Testing DisplayPort Sources

Cha

ter 2 – Testin

Dis

Port Sources

This chapter describes the test setup for testing DisplayPort source devices. Testing the physical layer of a

DisplayPort source device requires the Agilent U7232A DisplayPort Source Compliance Test Software and the

Series DSO/DSA90000A Infiniium Oscilloscope. If the software was purchased with the Series DSO/DSA90000A

Oscilloscope, this software should be pre-installed on the oscilloscope. If you need to download new software for

the DSO/DSA90000A Oscilloscope, you can do so at the following web page:

http://www.agilent.com/find/scope-apps-sw

What you will need

You will need the following items for the test.

Source Device under test

Agilent Series DSO/DSA90000A Oscilloscope with the U7232A DisplayPort Source Compliance Test

Software

W2641A DisplayPort Test Point Access Adapter

W2642A AUX Channel Controller

Miscellaneous W2642A accessories:

- Ethernet cross over cable

- DisplayPort cable (2 meter)

- Adaptor Board (p/n 99-00607)

Test workflow

Testing a DisplayPort source device involves the following high level steps:

1. Assemble all the test instruments, devices and equipment to test in your laboratory.

2. Complete the physical test setup in accordance with the test setup diagram (Figure 2-1) below.

3. Configure the Adaptor Board (p/n 99-00607) for testing a DisplayPort source (See Figure 2-2).

4. Enable the AUX Channel Control function in the W2642A (See Enabling the ACC function below). Note that

this can also be accomplished with the W2642A GUI.

5. (Recommended) Configure W2642A with valid EDID and DPCD data (See Reading and writing an EDID

and Reading and writing DPCD registers in Chapter 4 below.

6. Turn on the DSO/DSA90000A Oscilloscope and launch Agilent U7232A DisplayPort Source Compliance

Test Software using the oscilloscopes Analyzer menu.

7. Enter test setup details in the Setup tab of the U7232A DisplayPort Source Compliance Software, ensuring

selection of the W2642A in the Fixture Selection field.

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W2642A Quick Start Guide Rev. AP12

Page 7

8. Select tests desired in the Select Tests tab

9. Follow the Connection screen guidance which will address the specifics of your particular test connections

and configuration.

10. Select Run Tests after confirming selections.

Test Setup

The setup for testing DisplayPort source devices is shown in Figure 2-1 below. For a more detailed test method

please consult the U7232A Help dialog.

Figure 2-1 – Test Setup for DisplayPort Source Tests

Rev. AP12 W2642A Quick Start Guide

Figure 2-2 – Adapter board setting for source tests – jumpers on “TX” pins

Connecting to the W2642A

You will need to configure the W2642A to enable connection from the Agilent test applications. To establish

communication between the W2642A and the automated test system, the W2642A must have an IP address and

a physical Ethernet connection between the W2642A and the PC host for the DisplayPort Test Controller

(W2642A GUI) or the Agilent Automated Test Instrumentation platform.

from the Agilent test applications. To establish

communication between the W2642A and the automated test system, the W2642A must have an IP address and

a physical Ethernet connection between the W2642A and the PC host for the DisplayPort Test Controller

(W2642A GUI) or the Agilent Automated Test Instrumentation platform.

You can either connect to the W2642A over your LAN network, through a hub or you can connect directly. To

connect over the LAN you connect a standard Ethernet patch cable (not provided) between the Ethernet port on

the W2642A and a LAN access jack or Ethernet hub. To connect directly you connect the Ethernet crossover

cable (provided) between the Ethernet port on the W2642A and the PC host: either the Infiniium oscilloscope, or

the (W2642A GUI). These two connection methods are illustrated in the figures below.

You can either connect to the W2642A over your LAN network, through a hub or you can connect directly. To

connect over the LAN you connect a standard Ethernet patch cable (not provided) between the Ethernet port on

the W2642A and a LAN access jack or Ethernet hub. To connect directly you connect the Ethernet crossover

cable (provided) between the Ethernet port on the W2642A and the PC host: either the Infiniium oscilloscope, or

the (W2642A GUI). These two connection methods are illustrated in the figures below.

Figure 2-3 – Ethernet/IP connection to W2642A through corporate LAN network

Note: If you are using a PC that is connected to a network that automatically assigns an IP address, and you will

be disconnecting from that network to connect to the crossover cable and generator, you must manually enter an

IP address into the Agilent Test System application or host PC so it can communicate with the generator. The

network portions of the IP addresses of the W2642A and the Agilent Test System application or host PC must

match.

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W2642A Quick Start Guide Rev. AP12

Page 9

Figure 2-4 – Ethernet/IP connection to W2642A via direct connection

To set the generator’s IP address:

1. Press the Tools key. The Tools menu appears on the generator’s display as shown below.

2. Choose the System item by pressing the adjacent soft key. The System menu appears on the generator’s

display as shown below.

3. Choose the Network item by pressing the adjacent soft key. The generator’s IP address and subnet mask

appear on the generator’s display as shown below.

4. Press the Settings key. The Network Connection screen appears on the generator’s display as shown below.

If the IP Address configuration option is not visible, press the soft key adjacent to the arrow symbol by

SubnetMask until IP Address appears.

1. Change the IP address as follows:

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