Agilent N5410A Fibre Channel Automated Test Application

Transcription

1 Agilent N5410A Fibre Channel Automated Test Application Compliance Testing Methods of Implementation Agilent Technologies

2 Notices Agilent Technologies, Inc No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by United States and international copyright laws. Manual Part Number N Edition First edition, December 2005 Printed in USA Agilent Technologies, Inc Garden of the Gods Road Colorado Springs, CO USA Warranty The material contained in this document is provided as is, and is subject to being changed, without notice, in future editions. Further, to the maximum extent permitted by applicable law, Agilent disclaims all warranties, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or of any information contained herein. Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms, the warranty terms in the separate agreement shall control. Technology Licenses The hardware and/or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license. Restricted Rights Legend If software is for use in the performance of a U.S. Government prime contract or subcontract, Software is delivered and licensed as Commercial computer software as defined in DFAR (June 1995), or as a commercial item as defined in FAR 2.101(a) or as Restricted computer software as defined in FAR (June 1987) or any equivalent agency regulation or contract clause. Use, duplication or disclosure of Software is subject to Agilent Technologies standard commercial license terms, and non-dod Departments and Agencies of the U.S. Government will receive no greater than Restricted Rights as defined in FAR (c)(1-2) (June 1987). U.S. Government users will receive no greater than Limited Rights as defined in FAR (June 1987) or DFAR (b)(2) (November 1995), as applicable in any technical data. Safety Notices CAUTION A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met. WARNING A WARNING notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met.

3 Fibre Channel Automated Testing At A Glance The Agilent N5410A Fibre Channel Automated Test Application helps you verify Fibre Channel device under test (DUT) compliance to specifications with the Agilent 8 GHz or greater bandwidth Infiniium digital storage oscilloscope. The Fibre Channel Automated Test Application: Lets you select individual or multiple tests to run. Lets you identify the device being tested and its configuration. Shows you how to make oscilloscope connections to the device under test. Automatically checks for proper oscilloscope configuration. Automatically sets up the oscilloscope for each test. Provides detailed information for each test that has been run and lets you specify the thresholds at which marginal or critical warnings appear. Creates a printable HTML report of the tests that have been run. NOTE The tests performed by the Fibre Channel Automated Test Application are intended to provide a quick check of the electrical health of the DUT. This testing is not a replacement for an exhaustive test validation plan. Compliance testing measurements are described in the Fibre Channel Physical Interfaces (FC- PI- 2), Rev document. Required Equipment and Software In order to run the Fibre Channel automated tests, you need the following equipment and software: Infiniium 8 GHz or greater, 40 GSa/s Digital Storage Oscilloscope. N5410A Fibre Channel Automated Test Application software. N5400A EZJIT Plus jitter analysis software. E2688A Serial Data Analysis and Clock Recovery software. Probes. For more information on the specific probes, refer to the chapters that describe tests. Keyboard, qty = 1, (provided with the Agilent oscilloscope). Mouse, qty = 1, (provided with the Agilent oscilloscope). Precision 3.5 mm BNC to SMA male adapter, Agilent p/n , qty = 2 (provided with the Agilent oscilloscope). Recommended Equipment N5404A 1M memory upgrade. Fibre Channel Compliance Testing Methods of Implementation 3

4 In This Book This manual describes the tests that are performed by the Fibre Channel Automated Test Application in more detail. Chapter 1, Installing the Fibre Channel Automated Test Application shows how to install and license the automated test application software (if it was purchased separately). Chapter 2, Preparing to Take Measurements shows how to start the Fibre Channel Automated Test Application and gives a brief overview of how it is used. Chapter 3, Transmitter (Tx) Tests contains more information on the transmitter tests. Chapter 4, Receiver (Rx) Tests contains more information on the receiver tests. Chapter 5, Calibrating the Infiniium Oscilloscope and Probes describes how to calibrate the oscilloscope in preparation for running the Fibre Channel automated tests. Chapter 6, InfiniiMax Probing Options describes the 1168A or 1169A probe amplifier and probe head recommendations for Fibre Channel testing. 4 Fibre Channel Compliance Testing Methods of Implementation

5 See Also The Fibre Channel Automated Test Application s online help, which describes: Creating or opening a test project. Selecting tests. Configuring selected tests. Running tests. Viewing test results. Viewing/printing the HTML test report. Saving test projects. Fibre Channel Compliance Testing Methods of Implementation 5

6 6 Fibre Channel Compliance Testing Methods of Implementation

7 Contents Fibre Channel Automated Testing At A Glance 3 Required Equipment and Software 3 Recommended Equipment 3 In This Book 4 See Also 5 1 Installing the Fibre Channel Automated Test Application Installing the Software 9 Installing the License Key 9 2 Preparing to Take Measurements 3 Transmitter (Tx) Tests 4 Receiver (Rx) Tests Calibrating the Oscilloscope 11 Starting the Fibre Channel Automated Test Application 12 Online Help Topics 14 Probing the Link for Tx Compliance 16 Single-Ended Direct Connect Probing (Ch1) and (Ch3) 18 Single-Ended Probing (Ch1) and (Ch3) 19 Differential Probing (Ch2) 21 Running Signal Quality Tests 21 Rise/Fall Time 22 Peak-to peak Differential Voltage 24 Jitter Output 25 Common Mode Voltage RMS 26 Absolute Mask Tests 27 Normalized Mask Tests 28 Probing the Link for Rx Compliance 30 Single-Ended Direct Connect Probing (Ch1) and (Ch3) 32 Single-Ended Probing (Ch1) and (Ch3) 33 Differential Probing (Ch2) 35 Fibre Channel Compliance Testing Methods of Implementation 7

8 Running Signal Quality Tests 35 Common Mode Voltage RMS 37 Mask Tests 38 5 Calibrating the Infiniium Oscilloscope and Probes Required Equipment for Calibration 39 Internal Calibration 40 Probe Calibration and De-skew 42 Probe Atten/Offset Calibration 43 Probe Skew Calibration 46 6 InfiniiMax Probing Options 8 Fibre Channel Compliance Testing Methods of Implementation

9 Agilent N5410A Fibre Channel Automated Test Application Compliance Testing Methods of Implementation 1 Installing the Fibre Channel Automated Test Application Installing the Software 9 Installing the License Key 9 If you purchased the N5410A Fibre Channel Automated Test Application separately, you need to install the software and license key. Installing the Software 1 Make sure you have version A or higher of the Infiniium oscilloscope software by choosing Help>About Infiniium... from the main menu. 2 Insert the Fibre Channel Automated Test Application CD, and follow the instructions. Be sure to accept the installation of the.net Framework software; it is required in order to run the Fibre Channel Automated Test Application. Installing the License Key 1 Request a license code from Agilent by following the instructions on the Entitlement Certificate. You will need the oscilloscope s Option ID Number, which you can find in the Help>About Infiniium... dialog. 2 After you receive your license code from Agilent, choose Utilities>Install Option License... 3 In the Install Option License dialog, enter your license code and click Install License. 4 Click OK in the dialog that tells you to restart the Infiniium oscilloscope application software to complete the license installation. 5 Click Close to close the Install Option License dialog. 6 Choose File>Exit. Agilent Technologies 9

10 1 Installing the Fibre Channel Automated Test Application 7 Restart the Infiniium oscilloscope application software to complete the license installation. 10 Fibre Channel Compliance Testing Methods of Implementation

11 Agilent N5410A Fibre Channel Automated Test Application Compliance Testing Methods of Implementation 2 Preparing to Take Measurements Calibrating the Oscilloscope 11 Starting the Fibre Channel Automated Test Application 12 Before running the Fibre Channel automated tests, you should calibrate the oscilloscope. After the oscilloscope has been calibrated, you are ready to start the Fibre Channel Automated Test Application and perform measurements. Calibrating the Oscilloscope If you haven t already calibrated the oscilloscope, see Chapter 5, Calibrating the Infiniium Oscilloscope and Probes. NOTE If the ambient temperature changes more than 5 degrees Celsius from the calibration temperature, internal calibration should be performed again. The delta between the calibration temperature and the present operating temperature is shown in the Utilities>Calibration menu. NOTE If you switch cables between channels or other oscilloscopes, it is necessary to perform cable and probe calibration and channel de-skew calibration again. Agilent recommends that, once calibration is performed, you label the cables with the channel they were calibrated for. Agilent Technologies 11

12 2 Preparing to Take Measurements Starting the Fibre Channel Automated Test Application 1 From the Infiniium oscilloscope s main menu, choose Analyze>Automated Test Apps>Fibre Channel. Figure 1 The Fibre Channel Automated Test Application NOTE If Fibre Channel does not appear in the Automated Test Apps menu, the Fibre Channel Automated Test Application has not been installed (see Chapter 1, Installing the Fibre Channel Automated Test Application ). Figure 1 shows the Fibre Channel Automated Test Application main window. The task flow pane, and the tabs in the main pane, show the steps you take in running the automated tests: Setup Environment Lets you select the type of connection, the compliance point, bit rate, device identifier, and user description for the device under test. 12 Fibre Channel Compliance Testing Methods of Implementation

13 Preparing to Take Measurements 2 Select Tests Configure Connect Run Tests Results HTML Report Lets you select the tests you want to run. The tests are organized hierarchically so you can select all tests in a group. After tests are run, status indicators show which tests have passed, failed, or not been run, and there are indicators for the test groups. Lets you enter information about the device being tested and configure test parameters (like memory depth). Shows you how to connect the oscilloscope to the device under test for the tests to be run. Starts the automated tests. If the connections to the device under test need to be changed while multiple tests are running, the tests pause, show you how to change the connection, and wait for you to confirm that the connections have been changed before continuing. Contains more detailed information about the tests that have been run. You can change the thresholds at which marginal or critical warnings appear. Shows a compliance test report that can be printed. Fibre Channel Compliance Testing Methods of Implementation 13

14 2 Preparing to Take Measurements Online Help Topics For information on using the Fibre Channel Automated Test Application, see its online help (which you can access by choosing Help>Contents... from the application s main menu). The Fibre Channel Automated Test Application s online help describes: Creating or opening a test project. Selecting tests. Configuring selected tests. Connecting the oscilloscope to the DUT. Running tests. Viewing test results. To show reference images and flash mask hits. To change margin thresholds. Viewing/printing the HTML test report. Saving test projects. 14 Fibre Channel Compliance Testing Methods of Implementation

15 Agilent N5393A Fibre Channel Automated Test Application Compliance Testing Methods of Implementation 3 Transmitter (Tx) Tests Probing the Link for Tx Compliance 16 Running Signal Quality Tests 21 Rise/Fall Time 22 Peak-to peak Differential Voltage 24 Jitter Output 25 Common Mode Voltage RMS 26 Absolute Mask Tests 27 Normalized Mask Tests 28 This section provides the Methods of Implementation (MOIs) for Transmitter tests using an Agilent Infiniium oscilloscope, 1168A probes, and the Fibre Channel Automated Test Application. Agilent Technologies 15

16 3 Transmitter (Tx) Tests Probing the Link for Tx Compliance Transmitter tests are done by connecting the device under test to a DUT and probing the interoperability point to be tested. γ T = Bulkhead Transmitter Connector δ T = Internal Physical Method Device Connector β T = Internal Device Transmitter Connector Figure 2 DUT Interoperability Points There are three ways to probe an interoperability point: Use two SMA cables with precision 3.5 mm BNC to SMA male adapters ( , included with the oscilloscope), and the Ch1 and Ch3 inputs of an oscilloscope that has 40 GS/s sample rate available on two channels. Use two differential probe heads with two 1168A probe amplifiers (with the negative lead grounded for single- ended measurements) and the Ch1 and Ch3 inputs of an oscilloscope that has 40 GS/s sample rate available on two channels. Use one differential probe head with the 1168A probe amplifier and the Ch2 input of an oscilloscope that has 40 GS/s sample rate available on that channel. 16 Fibre Channel Compliance Testing Methods of Implementation

17 Transmitter (Tx) Tests 3 Table 1 Probing Options for Transmitter Testing DUT Connection *Typical Probing Configurations Probing Method Single-Ended Direct Connect (2 x 50-Ohm SMA Cables) Single-Ended (2 x 1168A w/ Differential Probe Heads) Differential (1 x 1168A w/ Differential Probe Head) Channels Used Captured Waveforms Differential Mode Common Mode System Specifications Oscilloscope System Band Width Rise* Time (20-80) 2 Pseudo Yes 8 GHz 38 ps 2 Pseudo Yes 8 GHz 38 ps 1 True No 8 GHz 38 ps Fibre Channel Compliance Testing Methods of Implementation 17

18 3 Transmitter (Tx) Tests Single-Ended Direct Connect Probing (Ch1) and (Ch3) The differential signal is constructed by the Fibre Channel Automated Test Application software from the math waveform Ch1- Ch3. Channel- to- Channel deskew is required using this measurement technique because two channels are used. See Chapter 5, Probe Skew Calibration, starting on page 46 for more information. D+ D- Figure 3 Single-Ended Direct Connect Probing 18 Fibre Channel Compliance Testing Methods of Implementation

19 Transmitter (Tx) Tests 3 Single-Ended Probing (Ch1) and (Ch3) The differential signal is constructed by the Fibre Channel Automated Test Application software from the math waveform Ch1- Ch3. Channel 1 must be connected to the D+ signal line and Channel 3 must be connected to the D- signal line. The + sides of the probes are connected to the signal line and the - sides of the probes are connected to ground. Place single- ended grounds as close to the signal line s reference ground as possible. Channel- to- Channel deskew is required using this technique because two channels are used. See Chapter 5, Probe Skew Calibration, starting on page 46 for more information. For more information on the 1168A probe amplifier and single- ended probe heads, see Chapter 6, InfiniiMax Probing Options, starting on page 49. Fibre Channel Compliance Testing Methods of Implementation 19

20 3 Transmitter (Tx) Tests D+ D- Figure 4 Single-Ended Probing 20 Fibre Channel Compliance Testing Methods of Implementation

21 Transmitter (Tx) Tests 3 Differential Probing (Ch2) The differential signal is measured directly by the differential probe head. Only one channel of the oscilloscope is used. For more information on the 1168A probe amplifier and differential probe heads, see Chapter 6, InfiniiMax Probing Options, starting on page 49. D+ D- Figure 5 Differential Probing Running Signal Quality Tests Start the automated testing application as described in Starting the Fibre Channel Automated Test Application" on page 12. Then, when selecting tests, navigate to Signal Quality in the Transmitter Tests group. Fibre Channel Compliance Testing Methods of Implementation 21

22 3 Transmitter (Tx) Tests Figure 6 Selecting Transmitter (Tx) Signal Quality Tests Rise/Fall Time The following table shows the specifications of rise and fall times from the FC- PI- 2 Fibre Channel document, Section 9.3, Table 20. Test Definition Notes from the Specification Table 2 Interoperability Connector Rise and Fall Time Specifications. βt 60 ps * 4.25 Gbps Gbps Gbps 75 ps to 192 ps 100 ps to 385 ps δt Not specified 75 ps to 192 ps 100 ps to 385 ps γt 60 ps * 75 ps to 192 ps 100 ps to 385 ps * Driver rise and fall time measurements for 4.25 Gbps is informative only. No maximum rise and fall time is given by the FC-PI-2 specification. Measured between the 20% and 80% voltage points. Rise and fall time measurements must be made using an oscilloscope with a bandwidth of at least 1.8 times the baud rate. 22 Fibre Channel Compliance Testing Methods of Implementation

23 Transmitter (Tx) Tests Gb/s rate requires a D21.5 clock pattern to eliminate the effects of pre- compensation. Measurement Algorithms Rise and fall times are limited to only rising or falling edges of consecutive transitions for transmitter measurements. Rise and fall times are taken independently on each single ended waveform source when two single ended probes or two Direct Connect cables are used. Fibre Channel Compliance Testing Methods of Implementation 23

24 3 Transmitter (Tx) Tests Peak-to peak Differential Voltage The following table shows the specifications of peak- to- peak differential voltage from the FC- PI- 2 Fibre Channel document, Section 9.3, Table 20. Test Definition Notes from the Specification Table 3 Peak-to peak Differential Voltage Specifications. Interoperability Connector 4.25 Gbps Gbps Gbps βt δt γt 310 mv to 1600 mv (with TCTF test load) 650 mv to 1600 mv (no load) 310 mv to 1600 mv (with TCTF test load) 600 mv to 2000 mv 600 mv to 2000mV 650 mv to 2000 mv 650 mv to 2000 mv 1100 mv to 2000 mv 1100 mv to 2000 mv Test Definition Notes from the Specification V Differentialp- p = 2* V High V Low V Single- endedp- p = V High - V Low Measure the inside of the data eye pattern at the 0.5 UI point. 24 Fibre Channel Compliance Testing Methods of Implementation

25 Transmitter (Tx) Tests 3 Jitter Output The following table shows the specifications of the Total Jitter with a BER of 10E- 12 measurement from the FC- PI- 2 Fibre Channel document, Section 9.5, Table 27. Test Definition Notes from the Specification Table 4 Total Jitter Specifications. Interoperability Connector 4.25 Gbps Gbps Gbps βt 0.52 UI (122.4 ps) (with and without TCTF test load) 0.33 UI (155.3 ps) 0.23 (216.5 ps) δt 0.26 UI (61.2 ps) 0.26 UI (122.4 ps) 0.25 UI (235.3 ps) γt 0.57 UI (134.1 ps) (with and without TCTF test load) 0.30 UI (141.1 ps) 0.27 UI (254.1 ps) Test Definition Notes from the Specification Table 5 Deterministic Jitter Specifications. Interoperability Connector 4.25 Gbps Gbps Gbps βt 0.33 UI (77.6 ps) (with and without TCTF test load) 0.20 UI (94.1 ps) 0.11 (103.5 ps) δt 0.14 UI (32.9 ps) 0.14 UI (32.9 ps) 0.12 UI (112.9 ps) γt 0.37 UI (87.0 ps) (with and without TCTF test load) 0.16 UI (75.3 ps) 0.13 UI (112.4 ps) Fibre Channel Compliance Testing Methods of Implementation 25

26 3 Transmitter (Tx) Tests Common Mode Voltage RMS The following table shows the specifications for the common mode voltage RMS measurement from the FC- PI- 2 Fibre Channel document, Section 9.3, Table 20. Test Definition Notes from the Specification Table 6 Common Mode Voltage RMS Specifications. Interoperability Connector βt δt γt 4.25 Gbps 30 mv 30 mv 30 mv 26 Fibre Channel Compliance Testing Methods of Implementation

27 Transmitter (Tx) Tests 3 Absolute Mask Tests See Sections 9.1 to 9.6 of the FC- PI- 2 Specification for additional notes and test definitions. Figure 7 shows the shape of the mask and the reference value locations. Figure 7 Absolute Mask for Transmitter Testing Fibre Channel Compliance Testing Methods of Implementation 27

28 3 Transmitter (Tx) Tests Normalized Mask Tests See Sections 9.1 to 9.6 of the FC- PI- 2 Specification for additional notes and test definitions. Figure 8 shows the shape of the mask and the reference value locations. Figure 8 Normalized Mask for Transmitter Testing. 28 Fibre Channel Compliance Testing Methods of Implementation

29 Agilent N5393A Fibre Channel Automated Test Application Compliance Testing Methods of Implementation 4 Receiver (Rx) Tests Probing the Link for Rx Compliance 30 Running Signal Quality Tests 35 Common Mode Voltage RMS 37 Mask Tests 38 This section provides the Methods of Implementation (MOIs) for Receiver tests using an Agilent Infiniium oscilloscope, 1168A probes, and the Fibre Channel Automated Test Application. Agilent Technologies 29

30 4 Receiver (Rx) Tests Probing the Link for Rx Compliance Transmitter tests are done by connecting the device under test to a DUT and probing the interoperability point to be tested. Figure 9 DUT Interoperability Points There are three ways to probe an interoperability point: Use two SMA cables with precision 3.5 mm BNC to SMA male adapters ( , included with the oscilloscope), and the Ch1 and Ch3 inputs of an oscilloscope that has 40 GS/s sample rate available on two channels. Use two differential probe heads with two 1168A probe amplifiers (with the negative lead grounded for single- ended measurements) and the Ch1 and Ch3 inputs of an oscilloscope that has 40 GS/s sample rate available on two channels. Use one differential probe head with the 1168A probe amplifier and the Ch2 input of an oscilloscope that has 40 GS/s sample rate available on that channel. 30 Fibre Channel Compliance Testing Methods of Implementation

31 Receiver (Rx) Tests 4 Table 7 Probing Options for Transmitter Testing DUT Connection *Typical Probing Configurations Probing Method Single-Ended Direct Connect (2 x 50-Ohm SMA Cables) Single-Ended (2 x 1168A w/ Differential Probe Heads) Differential (1 x 1168A w/ Differential Probe Head) Channels Used Captured Waveforms Differential Mode Common Mode System Specifications Oscilloscope System Band Width Rise* Time (20-80) 2 Pseudo Yes 8 GHz 38 ps 2 Pseudo Yes 8 GHz 38 ps 1 True No 8 GHz 38 ps Fibre Channel Compliance Testing Methods of Implementation 31

32 4 Receiver (Rx) Tests Single-Ended Direct Connect Probing (Ch1) and (Ch3) The differential signal is created by the Fibre Channel Automated Test Application software from the math waveform Ch1- Ch3. Channel- to- Channel deskew is required using this measurement technique because two channels are used. See Chapter 5, Probe Skew Calibration, starting on page 46 for more information. D+ D- Figure 10 Single-Ended Direct Connect Probing 32 Fibre Channel Compliance Testing Methods of Implementation

33 Receiver (Rx) Tests 4 Single-Ended Probing (Ch1) and (Ch3) The differential signal is constructed by the Fibre Channel Automated Test Application software from the math waveform Ch1- Ch3. Channel 1 must be connected to the D+ signal line and Channel 3 must be connected to the D- signal line. The + sides of the probes are connected to the signal line and the - sides of the probes are connected to ground. Place single- ended grounds as close to the signal line s reference ground as possible. Channel- to- Channel deskew is required using this technique because two channels are used. See Chapter 5, Probe Skew Calibration, starting on page 46 for more information. For more information on the 1168A probe amplifier and single- ended probe heads, see Chapter 6, InfiniiMax Probing Options, starting on page 49. Fibre Channel Compliance Testing Methods of Implementation 33

34 4 Receiver (Rx) Tests D+ D- Figure 11 Single-Ended Probing 34 Fibre Channel Compliance Testing Methods of Implementation

35 Receiver (Rx) Tests 4 Differential Probing (Ch2) The differential signal is measured directly by the differential probe head. Only one channel of the oscilloscope is used. For more information on the 1168A probe amplifier and differential probe heads, see Chapter 6, InfiniiMax Probing Options, starting on page 49. D+ D- Figure 12 Differential Probing Running Signal Quality Tests Start the automated testing application as described in Starting the Fibre Channel Automated Test Application" on page 12. Then, when selecting tests, navigate to Signal Quality in the Receiver Tests group. Fibre Channel Compliance Testing Methods of Implementation 35

36 4 Receiver (Rx) Tests Figure 13 Selecting Receiver (Rx) Signal Quality Tests 36 Fibre Channel Compliance Testing Methods of Implementation

37 Receiver (Rx) Tests 4 Common Mode Voltage RMS The following table shows the specifications for the common mode voltage RMS measurement from the FC- PI- 2 Fibre Channel document, Section 9.4, Table 24. Test Definition Notes from the Specification Table 8 Common Mode Voltage RMS Specifications. Interoperability Connector βr δr γr 4.25 Gbps 40 mv 30 mv 40 mv Fibre Channel Compliance Testing Methods of Implementation 37

38 4 Receiver (Rx) Tests Mask Tests See Sections 9.1 to 9.6 of the FC- PI- 2 Specification for additional notes and test definitions. Figure 14 shows the shape of the mask and the reference value locations. Figure 14 Received Eye Mask at β R, δ R, and γ R 38 Fibre Channel Compliance Testing Methods of Implementation

39 N5410A Fibre Channel Electrical Performance Validation and Compliance Software Compliance Testing Methods of Implementation 5 Calibrating the Infiniium Oscilloscope and Probes Required Equipment for Calibration 39 Internal Calibration 40 Probe Calibration and De-skew 42 Probe Skew Calibration 46 This appendix describes the Agilent Infiniium digital storage oscilloscope calibration procedures. Required Equipment for Calibration To calibrate the Infiniium oscilloscope in preparation for running the Fibre Channel automated tests, you need the following equipment: Keyboard, qty = 1, (provided with the Agilent Infiniium oscilloscope). Mouse, qty = 1, (provided with the Agilent Infiniium oscilloscope). Precision 3.5 mm BNC to SMA male adapter, Agilent p/n , qty = 2 (provided with the Agilent Infiniium oscilloscope). Calibration cable (provided with the Infiniium oscilloscope). E2655B probe de- skew fixture. Agilent Technologies 39

40 5 Calibrating the Infiniium Oscilloscope and Probes Figure 15 below shows a drawing of the calibration cable. Precision 3.5 mm Adaptors (2) Calibration Cable Figure 15 Accessories Provided with the Agilent Infiniium Oscilloscope Internal Calibration This will perform an internal diagnostic and calibration cycle for the oscilloscope. For the Agilent oscilloscope, this is referred to as Calibration. This Calibration will take about 20 minutes. Perform the following steps: 1 Set up the oscilloscope with the following steps: a Connect the keyboard, mouse, and power cord to the rear of the oscilloscope. b Plug in the power cord. c Turn on the oscilloscope by pressing the power button located on the lower left of the front panel. d Allow the oscilloscope to warm up at least 30 minutes prior to starting the calibration procedure in step 3 below. 40 Fibre Channel Compliance Testing Methods of Implementation

41 Calibrating the Infiniium Oscilloscope and Probes 5 2 Referring to Figure 16 below, perform the following steps: a Click on the Utilities>Calibration menu to open the Calibration dialog box. Figure 16 Accessing the Calibration Menu. b c d e Uncheck the Cal Memory Protect checkbox. Click the Start button to begin the calibration. Follow the on- screen instructions. Early during the calibration of channel 1, you will be prompted to perform a Time Scale Calibration, as shown in Figure 17 below. Fibre Channel Compliance Testing Methods of Implementation 41

42 5 Calibrating the Infiniium Oscilloscope and Probes Figure 17 Time Scale Calibration Dialog box f g h i j k Click on the Default button to continue the calibration, using the Factory default calibration factors. When the calibration procedure is complete, you will be prompted with a Calibration Complete message window. Click the OK button to close this window. Confirm that the Vertical and Trigger Calibration Status for all Channels passed. Click the Close button to close the calibration window. The internal calibration is completed. Read NOTE below. NOTE These steps do not need to be performed every time a test is run. However, if the ambient temperature changes more than 5 degrees Celsius from the calibration temperature, this calibration should be performed again. The delta between the calibration temperature and the present operating temperature is shown in the Utilities>Calibration menu. Probe Calibration and De-skew Before performing Fibre Channel tests you should calibrate and de- skew the probes. 42 Fibre Channel Compliance Testing Methods of Implementation

43 Calibrating the Infiniium Oscilloscope and Probes 5 Probe Atten/Offset Calibration 1 Referring to Figure 18 below, perform the following steps: a Click on the Setup>Channel 2 menu (or channel to which the probe is connected) to open the Channel Setup window. Figure 18 Channel Setup Window. b Click the Probes button in the Channel Setup window, to open the Probe Setup window. Fibre Channel Compliance Testing Methods of Implementation 43

44 5 Calibrating the Infiniium Oscilloscope and Probes Figure 19 Channel Dialog Box 2 Referring to Figure 20 below, perform the following steps: a Click the Add Head... button, and then select the probe head that is attached to the 1168A probe from the list of Head Type. Select OK to close the dialog box. Figure 20 Probe Setup Window. 44 Fibre Channel Compliance Testing Methods of Implementation

45 Calibrating the Infiniium Oscilloscope and Probes 5 3 If you are going to be probing a differential signal, be sure to select the Differential control. 4 Referring to Figure 21 below, perform the following steps: a Click on the Calibrate Probe button to open the Probe Calibration window. Figure 21 User Defined Probe Window. 5 Referring to Figure 22 below, perform the following steps: a Select the Calibrated Atten/Offset Radio Button b Click the Start Atten/Offset Calibration Button to open the Calibration window. Fibre Channel Compliance Testing Methods of Implementation 45

46 5 Calibrating the Infiniium Oscilloscope and Probes Figure 22 Probe Calibration Window. c d Follow the on screen instructions. At the end of the Atten/Offset Calibration perform the Skew Calibration. Probe Skew Calibration This procedure ensures that the timing skew errors between channels are minimized. Perform the following steps: 1 Referring to Figure 23 below, perform the following steps: a Select the Start Skew Calibration button and follow the on screen instructions. Information for proper connection to the oscilloscope of the probe can be found in the De- skew and Calibration manual that 46 Fibre Channel Compliance Testing Methods of Implementation

47 Calibrating the Infiniium Oscilloscope and Probes 5 comes with the E2655B De- skew Kit that came with your oscilloscope. Figure 23 De-skew Connection. NOTE Each probe is calibrated to the oscilloscope channel to which it is connected. Do not switch probes between channels or other oscilloscopes, or it will be necessary to calibrate them again. It is recommended that the probes be labeled with the channel on which they were calibrated. Fibre Channel Compliance Testing Methods of Implementation 47

48 5 Calibrating the Infiniium Oscilloscope and Probes 48 Fibre Channel Compliance Testing Methods of Implementation

49 Agilent N5410A Fibre Channel Automated Test Application Compliance Testing Methods of Implementation 6 InfiniiMax Probing Options Agilent Technologies 49

50 6 InfiniiMax Probing Options Agilent recommends the N5381A differential solder- in probe head, the N5382A differential browser probe head, or the E2478A differential socketed probe head for probing Fibre Channel test points. 5381A 5382A E2478A Figure 24 Table 9 Recommended Probe Heads for the Fibre Channel Testing Probe Head Characteristics Probe Head Model Number Differential Measurement (BW, input C, input R) Single-Ended Measurement (BW, input C, input R) Differential solder-in N5381A 10 GHz, 0.21 pf, 50 kohm 10 GHz, 0.35 pf, 25 kohm Differential browser N5382A 10 GHz, 0.21 pf, 50 kohm 10 GHz, 0.35 pf, 25 kohm Differential socket E2678A 10 GHz, 0.34 pf, 50 kohm 10 GHz, 0.56 pf, 25 kohm 50 Fibre Channel Compliance Testing Methods of Implementation

51 A Absolute mask tests, 27 B BNC to SMA male adapter, 3, 39 C calibrating the oscilloscope, 39 calibration cable, 39 channel de-skew, 46 Common mode voltage RMS Rx test, 37 Common mode voltage RMS Tx test, 26 configure, 13 connect, 13 D de-skew, channel-to-channel, 46 E E2688A serial data analysis and clock recovery, 3 F Fibre Channel automated testing at a glance, 3 H HTML report, 13 I in this book, 4 internal calibration, 40 J Jitter output tests, 25 K keyboard, 3, 39 M Mask Rx Tests, 38 Fibre Channel Compliance Testing Methods of Implementation 51

52 mouse, 39 N N5410A Fibre Channel automated test application, 3 Normalized mask tests, 28 P Peak-to-peak Differential Voltage, 24 precision 3.5 mm BNC to SMA male adapter, 3, 39 precision 3.5 mm BNC to SMA male adapters, 16, 30 probe calibration, 43 probing the link for Rx compliance, 30 probing the link for Tx compliance, 16 R report, 13 required equipment and software, 3 required equipment for calibration, 39 results, 13 Rise/Fall Time, 22 Rise/Fall time tests, 22 run tests, 13 running signal quality Rx tests, 35 running signal quality Tx tests, 21 S select tests, 13 signal quality Rx tests, 35 signal quality Tx tests, 21 starting the Fibre Channel automated test application, 9, Fibre Channel Compliance Testing Methods of Implementation

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54 Agilent Technologies, Inc Printed in USA First edition, December 2005 *N * N Agilent Technologies