Agilent Technologies U4154A Service Manual
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Agilent Technologies U4154A Service Manual

Agilent Technologies U4154A Service Manual

Logic analyzer
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Agilent U4154A Logic
Analyzer
Service Guide
Agilent Technologies

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Summary of Contents for Agilent Technologies U4154A

  • Page 1 Agilent U4154A Logic Analyzer Service Guide Agilent Technologies...
  • Page 2 Should Agilent and the user have a separate written agreement with warranty WA R N I N G terms covering the material in this...

  • Page 3: Safety Symbols

    Instruction manual symbol: the product is marked with this symbol when it is necessary for you to refer to the instruction manual in order to protect against damage to the product. Hazardous voltage symbol. Earth terminal symbol: Used to indicate a circuit common connected to grounded chassis. U4154A Logic Analyzer Service Guide...

  • Page 4: Agilent U4154A Logic Analyzer - At A Glance

    The U4154A logic analyzer module uses 4 pod cables. Each of these pod cables has 2 90- pin probe connector pods making it a total of eight pods per U4154A module. Each of these pods contain 17 channels, out of which 16 are data channels and 1 channel is bonus bit or clock channel.
  • Page 5 Application This service guide applies to U4154A logic analyzer modules installed in a M9502A or M9505A AXIe chassis. U4154A Logic Analyzer Module The following figure displays the M9502A (2- slot) AXIe chassis and M9505A 5- slot AXIe chassis. M9502A and M9505A AXIe Chassis...

  • Page 6: In This Service Guide

    In This Service Guide This book is the service guide for the U4154A logic analyzer module. This service guide has five chapters. Chapter 1, “General Information” contains information about the module, lists accessories for the module, gives specifications and characteristics of the module, and provides a list of the equipment required for servicing the module.

  • Page 7: Table Of Contents

    Assemble the SMA/Flying Lead Test Connectors Set Up the Test Equipment Connect the Test Equipment Connect the U4154A Logic Analyzer Pod to the Pulse Generator Connect the Pulse Generator Output to the Oscilloscope Verify and adjust the pulse generator DC offset...
  • Page 8 Acquisition Memory Cell Test ATB (AXIe Trigger Bus) Test To run the self tests To exit the test system To test the cables Returning and Replacing a U4154A Module or its cables To remove the U4154A module U4154A Logic Analyzer Service Guide...
  • Page 9 Contents To remove the logic analyzer cable To install the U4201A logic analyzer cable To replace the circuit board To return the U4154A module or cable for Repair/Exchange Index U4154A Logic Analyzer Service Guide...
  • Page 10 Contents U4154A Logic Analyzer Service Guide...
  • Page 11 Agilent U4154A Logic Analyzer Service Guide General Information Accessories Chassis and software Specifications Characteristics This chapter lists the accessories and some of the specifications and characteristics for testing and servicing the U4154A logic analyzer. Agilent Technologies...

  • Page 12: General Information

    General Information Accessories One or more of the following accessories, sold separately, are required to set up and operate the U4154A logic analyzer module for testing and servicing it. Probing Accessories For information about probing accessories for logic analyzers with 90- pin pod connectors, see the Probing Solutions for...

  • Page 13: Specifications

    U4154A Logic Analyzer Specifications Parameter 2.5 Gb/s Notes mode Maximum state data rate 2.5 Gb/s (DDR, 1.25 GHz clock), specified at probe tip. 1.4 Gb/s mode Maximum state data rate 1.4 Gb/s U4154A Logic Analyzer Service Guide...

  • Page 14: Characteristics

    Value Maximum Conventional Timing Rate 5.0 GHz, half channel Channel Count per module Channel Count per 2-Cards Module Memory Depth U4154A Option 002 2 M Samples Memory Depth U4154A Option 004 4 M Samples Memory Depth U4154A Option 008 8 M Samples...

  • Page 15: Environmental Characteristics

    Operating: Random vibration 5 to 500 Hz, 10 minutes per axis, ≈0.2 g (rms). Power All power supplies required for operating the U4154A logic analyzer are supplied through the backplane connector in the Agilent AXIe chassis in which you install the module.
  • Page 16 General Information U4154A Logic Analyzer Service Guide...

  • Page 17: Preparing For Troubleshooting Or Performance Testing

    To set up the U4154A module To test the U4154A module To clean the module This chapter gives you instructions for preparing the U4154A logic analyzer module for troubleshooting or servicing it. Operating Environment The operating environment is listed on page 15.

  • Page 18: To Set Up The U4154A Module

    If you don’t have the installation guide, you can find the latest version on the Internet at www.agilent.com. On this site, specify “U4154A” in the quick search box. In the product page’s Technical Support area, select “Manuals & Guides” to find the Installation Guide.

  • Page 19: To Test The U4154A Module

    Preparing for Troubleshooting or Performance Testing To test the U4154A module The U4154A logic analyzer module does not require an operational accuracy calibration or adjustment. After installing the module, you can test and use the module. • If you require a test to verify logic analyzer’s performance with the specifications, see “Testing U4154A...
  • Page 20 Preparing for Troubleshooting or Performance Testing U4154A Logic Analyzer Service Guide...

  • Page 21: Testing U4154A Performance

    This chapter tells you how to test the performance of the U4154A logic analyzer against the specifications listed on page To ensure the U4154A logic analyzer module is operating as specified, software tests (self- tests) and a manual performance test are done. The logic analyzer is considered performance- verified if all of the software tests and the manual performance test have passed.
  • Page 22 A U4154A module that is licensed with the -01G option needs to be tested N O T E at an Agilent Service Center. The Service Center has the capability to test the module at up to the 2.5Gb/s state speed to ensure that the calibration...
  • Page 23 A list of the recommended test equipment is provided. You can use any equipment that satisfies the specifications given. However, the instructions are written with the presumption that you are using the recommended test equipment. U4154A Logic Analyzer Service Guide...

  • Page 24: Perform The Self-Tests

    Select Help->Self-Test... from the main menu. The Analysis System Self Tests window will appear. In the Select suites list, select U4154A. Then, select All in the Select tests list. Select Start. This will perform a complete system self- test.

  • Page 25: Equipment Required For The Performance Test

    Male BNC to Female SMA adapters Cambridge Products CP-AD507 (Qty 2) (see www.cambridgeproducts.com) SMA/Flying Lead test connectors, (f) no substitute “Assemble the SMA/Flying Lead SMA to (f) SMA to Flying Lead Probe Test Connectors" on page 26 (Qty 4) U4154A Logic Analyzer Service Guide...

  • Page 26: Assemble The Sma/Flying Lead Test Connectors

    0.120" solder tails, 2 X 40 contacts SMA 50 ohm terminators Minimum bandwidth 2 GHz Johnson 142-0801-866 50 ohm Dummy (Qty 2) Load Plug SMA m-m adapter Johnson 142-0901-811 SMA Plug to (Qty 4) Plug or similar U4154A Logic Analyzer Service Guide...
  • Page 27 Trim about 2.5 mm from the outer leads. Using a very small amount of solder, tack each inner lead to each outer lead at the point where they are touching. U4154A Logic Analyzer Service Guide...
  • Page 28 Rotate the assembly 180 degrees and solder the two SMA board mount connector frames together. Check your work: Ensure that the following four points have continuity between them: The two pins on the left side of the pin U4154A Logic Analyzer Service Guide...
  • Page 29 Attach an SMA m- m adapter to one end of each of the four SMA/Flying Lead test connectors. Attach a 50 ohm terminator to the other end of two of the SMA/Flying Lead test connectors. U4154A Logic Analyzer Service Guide...
  • Page 30 Testing U4154A Performance The finished test connector is shown in the pictures below. U4154A Logic Analyzer Service Guide...

  • Page 31: Set Up The Test Equipment

    ±0.5% of setting. If you are using an 81134A pulse generator, the frequency accuracy is ±0.005% of setting. Set the rest of the pulse generator parameters to the values shown in one of the following tables. U4154A Logic Analyzer Service Guide...
  • Page 32 Offs: 0.6 V Output: Enable (LED off) Output: Enable (LED off) Comp: Normal (LED off) Comp: Normal (LED off) Limit: Off (LED off) Limit: Off (LED off) Output: Enable (LED off) Output: Enable (LED off) U4154A Logic Analyzer Service Guide...
  • Page 33 Infinite Persistence: not Clock: not selected selected Zoom: not selected Sweep: Auto Sampling Rate: Automatic Waveform Brightness: as preferred Sine(x)/x Interpolation: Grid: On, Quantity: 1 checked Intensity: as preferred Measure: Markers Mode: Manual placement All else: (n/a) U4154A Logic Analyzer Service Guide...
  • Page 34 Roll Mode: not selected Edge: Rising Edge Sine(x)/x Interpolation: Persistence: Minimum checked Delayed: not selected Sweep: Auto Averaging: Enabled, Grid: On, Quantity: 1, # of Averages: 16 Intensity: as preferred Measure: Markers Mode: Manual placement All else: (n/a) U4154A Logic Analyzer Service Guide...

  • Page 35: Connect The Test Equipment

    Connect one E5382A Flying Lead Probe Set to Pod 2 of the U4154A logic analyzer. This probe set is used later to test data on pods 2 to 8. Connect the other E5382A Flying Lead Probe Set to Pod 1 of the U4154A logic analyzer.
  • Page 36 Channel 2 OUTPUT. Connect the Pod 1 E5382A Flying Lead Probe Set’s bits 6 and 14 to the SMA/Flying Lead test connector’s pin strip connector at the pulse generator’s Channel 2 OUTPUT. U4154A Logic Analyzer Service Guide...

  • Page 37: Connect The Pulse Generator Output To The Oscilloscope

    Attach one end of the other SMA cable to the Male BNC to Female SMA adapter on Channel 2 of the oscilloscope. Attach the other end of the SMA cable to the SMA/Flying Lead connector at the Channel 2 OUTPUT of the pulse generator. U4154A Logic Analyzer Service Guide...

  • Page 38: Verify And Adjust The Pulse Generator Dc Offset

    Channel 2 OFFSET until the waveforms are centered as well as possible. (The resolution of the 8133A pulse generator is 20 mV, and the resolution of the 81134A pulse generator is 10 mV.) U4154A Logic Analyzer Service Guide...

  • Page 39: Deskew The Oscilloscope

    The horizontal center of the graticule line is at 600 mV because the vertical offset was set to 600 mV in the oscilloscope setup described on page Select Close in the Channel Setup window. U4154A Logic Analyzer Service Guide...

  • Page 40: Test The U4154A Module

    Testing U4154A Performance Test the U4154A Module The following sections explain how to test the maximum state data rate. Record the U4154A logic analyzer’s model and serial number in the Performance Test Record (see page 62). Record your work order number (if applicable) and today’s date.

  • Page 41: Configure The Logic Analysis System

    Testing U4154A Performance Configure the Logic Analysis System In the Agilent Logic Analyzer application, choose File→New. This puts the logic analysis system into its initial state. Disable all logic analyzers other than the analyzer under test. Select the Overview tab at the bottom of the main window.
  • Page 42 In the Analyzer Setup window, choose the Threshold button for Pod 1. The E5382A probe must be connected to the logic analyzer pod as N O T E described on page U4154A Logic Analyzer Service Guide...
  • Page 43 Set the threshold value for Pod 1 of the logic analyzer to 600 mV. Click Apply to All Other Pods (Excluding Clocks). Then, click Done to close the dialog. Drag the scroll bar all the way to the left. U4154A Logic Analyzer Service Guide...
  • Page 44 Testing U4154A Performance Select the Clock Thresholds button. In the Threshold Settings for Clock Channels dialog, set the Pod 1 clock threshold to Differential. Click Done. The activity indicator will show activity on clock 1. U4154A Logic Analyzer Service Guide...
  • Page 45 Set the trigger position and acquisition memory depth: Set the Trigger Position to 100% Poststore. Set the Acquisition Depth to 128K. Set Clk1 to Both edges clocking. The following screen displays this state clock setting. U4154A Logic Analyzer Service Guide...

  • Page 46: Determine Maximum Clock Rate

    1 MHz and then again wait for 100 acquisitions at this new frequency without any error. Repeat this step until you get 100 acquisitions without any error display. Click the Stop toolbar button to stop the data acquisition. U4154A Logic Analyzer Service Guide...
  • Page 47 “Final Pulse Generator Frequency” section of the Performance Test Record (page 62). Recording this final frequency provides a traceable measurement that is expected to be unique for each U4154A Logic Analyzer module. U4154A Logic Analyzer Service Guide...

  • Page 48: Adjust Sampling Positions Using Eye Scan

    In the Buses/Signals section of the dialog, ensure that the check box next to “My Bus 1” is checked. Set the sample position for My Bus 1 signals by dragging the blue bar for “My Bus 1” to approximately - 3.6 ns. U4154A Logic Analyzer Service Guide...
  • Page 49 Testing U4154A Performance Click the plus sign to expand bus “My Bus 1”. U4154A Logic Analyzer Service Guide...
  • Page 50 2 Using the mouse pointer, grab the blue bar for “My Bus 1” and move it to the recommended starting position of -3.6 ns. All of the blue bars will follow. Click Edit to display the Edit Measurement dialog box. U4154A Logic Analyzer Service Guide...
  • Page 51 The important point is that your Eye Scan display should look similar to the picture below (although it may be shifted left or right), and Eye Scan must be able to place the blue bars in the eye. U4154A Logic Analyzer Service Guide...

  • Page 52: Re-Align A Stray Channel

    In the following example, the sampling position of one channel (My Bus 1 [0]) must be realigned with the sampling position of the other channels. U4154A Logic Analyzer Service Guide...
  • Page 53 Click the Run This Measurement button in the Eye Scan - Sample Positions and Threshold Settings dialog. Eye Scan will recalculate the new sample positions based on the sample position changes. The following example shows all sampling positions aligned and in the correct eye. U4154A Logic Analyzer Service Guide...

  • Page 54: Test Pod 1

    Scan cannot place the blue bar in the narrow eye, then the logic analyzer fails the test. Record the result in the “Eye Scan locates an eye for each bit” section of the Performance Test Record (page 62). U4154A Logic Analyzer Service Guide...
  • Page 55 Select the Run icon Data will appear in the Listing Window upon completion of the run. If the data values are not “A”s and “5”s, you may need to set the sampling positions in different eyes. U4154A Logic Analyzer Service Guide...
  • Page 56 Select OK to close the marker Value Properties window. Select OK to close the marker Value window. The system will search the display for the occurrences specified. Select OK to close the New Marker window. U4154A Logic Analyzer Service Guide...
  • Page 57 After about one minute, select the Stop button to stop the acquisition. If the “can’t find occurrence” window does not appear, then the analyzer passes the test. Record “Pass” in the “Maximum State Data Rate” section of the Performance Test Record. U4154A Logic Analyzer Service Guide...

  • Page 58: Test Pod 2

    In the Overview window, select Setup→Bus/Signal... from the module’s drop- down menu. Scroll to the right and unassign all Pod 1 bits. Set the Pod 2 threshold to 600 mV (just as you did for Pod 1 on page 43). U4154A Logic Analyzer Service Guide...
  • Page 59 Select the Run Repetitive icon Determine pass or fail (2 of 2 tests). See page Test the complement of the bits (Pod 2) Test the complement of the bits. See page U4154A Logic Analyzer Service Guide...

  • Page 60: Test Pods 3

    Differential: Drag the scroll bar all the way to the left. Select the Clock Thresholds button. In the Threshold Settings for Clock Channels dialog, set the Pod 1 clock threshold to Differential. Click Done. U4154A Logic Analyzer Service Guide...
  • Page 61 From the Main Menu, choose File→Exit. At the dialog “Do you want to save the current configuration?” select Ending and restarting the logic analysis session will re- initialize the system. Disconnect all cables and adapters from the pulse generator and the oscilloscope. U4154A Logic Analyzer Service Guide...

  • Page 62: Performance Test Record

    Testing U4154A Performance Performance Test Record LOGIC ANALYZER MODEL NO. (circle one): U4154A Logic Analyzer Serial No. Work Order No. Date: Recommended Test Interval - 2 Year/4000 hours Recommended next testing: TEST EQUIPMENT USED Pulse Generator Model No. Oscilloscope Model No.
  • Page 63 Testing U4154A Performance TEST RESULTS Normal Complement Normal Complement Pod 3 Results (pass/fail): Pod 4 Results (pass/fail): Pod 5 Results (pass/fail): Pod 6 Results (pass/fail): Pod 7 Results (pass/fail): Pod 8 Results (pass/fail): U4154A Logic Analyzer Service Guide...
  • Page 64 Testing U4154A Performance U4154A Logic Analyzer Service Guide...

  • Page 65: Calibrating

    Agilent U4154A Logic Analyzer Service Guide Calibrating Calibration Strategy This chapter gives you instructions for calibrating the U4154A logic analyzer. Agilent Technologies...

  • Page 66: Calibration Strategy

    Calibrating Calibration Strategy The U4154A logic analyzer does not require any periodic adjustments or calibration by the user to ensure operational accuracy. However, Agilent recommends that performance of the U4154A logic analyzer be tested against its specifications at two- year intervals. This testing is required in order to obtain calibration certification.

  • Page 67: Troubleshooting

    During the troubleshooting instructions, the flowcharts will direct you to perform the self- tests or the cable test. The service strategy for the U4154A module is the replacement of defective assemblies. You can return this module to Agilent Technologies for all service work, including troubleshooting.

  • Page 68: To Use The Flowcharts

    The flowcharts refer to other tests to help isolate the problem. The circled numbers on the charts indicate connections with the other flowchart. Start your troubleshooting at the top of the first flowchart. Figure 1 Troubleshooting Flowchart 1 U4154A Logic Analyzer Service Guide...
  • Page 69 Troubleshooting Figure 2 Troubleshooting Flowchart 2 U4154A Logic Analyzer Service Guide...

  • Page 70: Self-Test Descriptions

    FPGA to FPGA Communication Test This test is only run if there are two or more U4154A logic analyzer cards installed in a chassis and connected together with the flex cables. The purpose of this test is to verify that the FPGAs can drive and receive the signals correctly.

  • Page 71: Probe Id Read Test

    Resource Bus Connection Test This test is only run if there are two or more U4154A logic analyzer cards in adjacent slots in a chassis. This test verifies whether or not the flex cables are squarely and firmly inserted into the connectors.

  • Page 72: Comparator Delay Test

    DDR acquisition memory and read the same data back. Acquisition Memory Cell Test Tests every bit of the DDR acquisition memory. The test verifies that every bit can be written to 0 and written to 1 and read back accurately. U4154A Logic Analyzer Service Guide...

  • Page 73: Atb (Axie Trigger Bus) Test

    Troubleshooting ATB (AXIe Trigger Bus) Test This test verifies the ATB signal connections between the acquisition chips, the interface FPGA and the two 8- bit transceiver chips. U4154A Logic Analyzer Service Guide...

  • Page 74: To Run The Self Tests

    Troubleshooting To run the self tests You can run self tests on the U4154A module to verify if the module is operating correctly. Before running self tests, ensure that: • you have connected all the hardware components for the U4154A module •...

  • Page 75: To Exit The Test System

    Troubleshooting If all tests did not pass, refer to “To use the flowcharts" page 68. To exit the test system Close the self- test window. No additional actions are required. U4154A Logic Analyzer Service Guide...

  • Page 76: To Test The Cables

    Differential Probes No Substitute E5379A (Qty 2) Connect the U4154A logic analyzer to the stimulus board. Connect the Agilent E5379A 90- pin differential probes to the logic analyzer cable (also called “Pods”) to be tested. Start with Pods 1 and 2.
  • Page 77 • Even. • Count. Press the Resynch VCO button, then the Counter RST (Counter Reset) button. In the Agilent Logic Analyzer application, choose File→New. This puts the logic analysis system into its initial state. U4154A Logic Analyzer Service Guide...
  • Page 78 Select the Overview tab at the bottom of the main window. Click on each unused logic analyzer and select disable. Only the logic analyzer to be tested should remain enabled. U4154A Logic Analyzer Service Guide...
  • Page 79 Verify that the pod threshold buttons say “Threshold: Differential”, as shown above. If they don’t, make sure the correct probes (E5379A) are attached to pods 1 and 2. The threshold is set to Differential automatically when E5379A probes are attached. U4154A Logic Analyzer Service Guide...
  • Page 80 Select State - Synchronous Sampling. For State Clock, select Pod A1 Clock and Both edges. Set the trigger position and acquisition memory depth: Set the Trigger Position to 100% Poststore. Set the Acquisition Depth to 8K. U4154A Logic Analyzer Service Guide...
  • Page 81 Bus 1” is checked. Click Edit and select the Do time scan only option as the scan dimension and the Lock Thresholds checkbox. Select the Run This Measurement button in the Eyescan - Sample Positions dialog. U4154A Logic Analyzer Service Guide...
  • Page 82 Verify the failure: Swap the E5379A probes so that the pod 1 cable remains connected to the stimulus board’s pod 4 connector and the pod 2 cable remains connected to U4154A Logic Analyzer Service Guide...
  • Page 83 Repeat the cable test (step12) for pod pairs 5 and 6 and 7 and 8 connecting the odd pod cable to the stimulus board’s pod 4 connector and the even pod cable to the stimulus board’s pod 5 connector: Return to the troubleshooting flowchart. U4154A Logic Analyzer Service Guide...
  • Page 84 Troubleshooting U4154A Logic Analyzer Service Guide...

  • Page 85: Returning And Replacing A U4154A Module Or Its Cables

    C A U T I O N module in the chassis. The enclosure surface of the U4154A module may become hot during use. If you need to remove the module, first power down the AXIe chassis, allow the module to cool, and then pull the module out of the chassis.

  • Page 86: To Remove The U4154A Module

    There are four cables for each U4154A logic analyzer module. One cable is for pods 1 and 2, the other cable is for pods 3 and 4, and so on till pod 8 of the U4154A module. The following figure displays three cables attached to pods 3, 4, 5, 6, 7, and 8 of the U4154A module.

  • Page 87: To Install The U4201A Logic Analyzer Cable

    Hand tightening is recommended or maximum torque of 3in- lb. To replace the circuit board If the circuit board of the U4154A module is found faulty, perform the following steps to get it repaired/replaced. Remove the logic analyzer cables using the “To remove the logic analyzer cable”...

  • Page 88: To Return The U4154A Module Or Cable For Repair/Exchange

    Returning and Replacing a U4154A Module or its cables To return the U4154A module or cable for Repair/Exchange Before returning the U4154A module or a logic analyzer cable to Agilent Technologies, contact your nearest Agilent Technologies Sales Office for additional details. Information on contacting Agilent can be found at www.agilent.com.
  • Page 89 24, description, service office, features, set up flowcharts, one-card module, specifications, storage, general information, test connectors, install E5379A cables, logic analyzer cable, equipment, instrument, cleaning the, interval, U4154A Logic Analyzer Service Guide...
  • Page 90 Index U4154A Logic Analyzer Service Guide...

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