Manuals / Agilent Technologies / Lawn and Garden / Weather Radio

Agilent Technologies 1680 manual Agilent 1690A,AD-series Logic Analyzer Theory, Acquisition Board

Models: 1690 1680

1 174

Download 174 pages 9.17 Kb

Page 166

Agilent 1690A,AD-series Logic Analyzer Theory

Chapter 8: Theory of Operation

Agilent 1690A,AD-series Logic Analyzer Theory

Agilent 1690A,AD-series Logic Analyzer Theory

Acquisition Board

The Agilent 1690A,AD-series logic analyzers utilize the same acquisition board as the 1680A,AD-series benchtop logic analyzers. The motherboard interface connects directly to the IEEE 1394 port on the host PC.

Power Supply

A low voltage power supply provides all the DC voltages needed to operate the logic analyzer acquisition board. The power supply also provides the +5V VDC voltage to the probe cables to power the logic analyzer accessories and analysis probes.

Unfiltered voltages of +12V, +5V, -5.2V, and +3.4 are supplied to the power distribution board where they are filtered and distributed to other boards and components in the system.

Power Distribution Board

The power distribution board connects directly to the power supply and distributes power to the rest of the system. The power distribution board has circuitry for regulating fan voltage that is temperature dependent as well as detecting when a fan ceases to spin.

166

Image 166

Agilent Technologies 1680 manual Agilent 1690A,AD-series Logic Analyzer Theory, Acquisition Board, Power Supply

Contents

Service Guide Agilent Technologies 1680/90-Series Logic AnalyzerFeatures The Agilent 1680/90-Series Logic Analyzer-At a GlanceService Strategy In This Book To make the test connectors Contents3 Testing Performance The Agilent 1680/90-Series Logic Analyzer-At a Glance4 Calibrating and Adjusting ContentsTo set up the logic analyzer for the state mode tests To test the threshold accuracyTroubleshooting the Agilent 1680A,AD-series Contents5 Troubleshooting Troubleshooting the Agilent 1690A,AD-series8 Theory of Operation Contents1690A,AD-series disassembly/assembly Agilent 1680A,AD-series Logic Analyzer TheoryGeneral Information Accessories Accessories AvailableCharacteristics SpecificationsSetup/Hold Time Probes Auxiliary PowerOperating Environment for indoor use only 1680A,AD-Series 1690A,AD-Series DimensionsChapter 1 General Information Equipment Required Recommended Test EquipmentChapter 1 General Information EquipmentPreparing for Use Storage Power RequirementsOperating Environment To inspect the logic analyzer1 Connect the power cord to the instrument and to the power source To apply powerTo connect the 1690A,AD-series logic analyzer to a host PC 2 Turn on the power switch located on the front panelTo start the user interface To clean the logic analyzerTo test the logic analyzer Testing Performance Test Interval The Logic Analyzer InterfaceTest Strategy Performance Test RecordTo make the test connectors a Solder a jumper wire to all pins on one side of the Berg strip To set up the test equipment and the logic analyzer Set up the test equipmentSet up the 1680A,AD-series logic analyzer Chapter 3 Testing Performance Set up the 1690A,AD-series logic analyzerTo perform the logic analyzer self-tests To set up the test equipment and the logic analyzer3 Set the reporting level Chapter 3 Testing PerformanceTo set up the test equipment and the logic analyzer 4 Select the tests you want to run 5 Click StartTo set up the test equipment and the logic analyzer To reset the self-test options, click ResetChapter 3 Testing Performance 6 Click Close to close the Analysis System Self Tests dialogSet up the equipment To test the threshold accuracyConnect and configure the logic analyzer Test the ECL Threshold Test the 0 V User Threshold Test the next pod To set up the logic analyzer for the state mode tests To set up the logic analyzer for the state mode tests3 Configure the trigger according to your logic analyzer select the M1 marker c In the Position box, select Value i Click OK to close the Value dialog Connect and configure the logic analyzer To test the single-clock, single-edge, state acquisitionSet up the equipment To test the single-clock, single-edge, state acquisitionTo test the single-clock, single-edge, state acquisition Chapter 3 Testing PerformanceTesting Connect the 1680/81/90/91A,AD Logic Analyzer to the Pulse Generator1682A,AD or 1692A,AD only Pod 1 clock/data channel ClkVerify the test signal Check the setup/hold combination 3 Select the logic analyzer sample positions Chapter 3 Testing Performance a In the Analyzer Setup dialog, click on the Sampling tabThe following clock configurations will be used in steps 4, 5, and d Click OK to close the Sample Positions dialoge Click OK to close the Analyzer Setup dialog 5 Verify the test data then select Enter to display the setup time ∆ Time1-2 e Click OK to close the Analyzer Setup dialog 10 Verify the test data Chapter 3 Testing Performance Test the next channels 1680/81A,AD and 1690/91A,ADTo test the single-clock, single-edge, state acquisition 1 If you have not already done so, do the following procedures To test the multiple-clock state acquisitionSet up the equipment 2 Increase the pulse generator channel 2 width to 3.000 nsConnect to 8133A Connect and configure the logic analyzer1680A, AD or 1690A, AD only Channel 2 Output1682A, AD or 1692A, AD only Clock/data channel for Pod 1, 2, 3, and 4 Clk 1, Clk 2, Clk 3, ClkVerify the test signal Check the setup/hold with single clock edges, multiple clocks 3 Select the clocks to be tested d Connect all clock channels to the pulse generator channel 1 output Page Test the next channels 1680/81A, AD and 1690/91A, AD Set up the equipment To test the single-clock, multiple-edge, state acquisitionTo test the single-clock, multiple-edge, state acquisition Connect the 1680/81/90/91A,AD Logic Analyzer to the Pulse Generator Connect and configure the logic analyzerTesting Connect to 8133A1Pod 1, channel 3 Pod 2, channel 3 Pod 3, channel 3 Pod 4, channel Verify the test signal Check the setup/hold with single clock, multiple clock edges Page The following clock configurations will be used in steps 3, 4, and The test passes when the logic analyzer finds all occurrences of the patterns programmed into the Markers. If the test passes, record a Pass in the performance test record under single-clock single-edge next to the clock and edge being tested Test the next channels 1680/81A,AD and 1690/91A,AD Chapter 3 Testing PerformanceTo test the single-clock, multiple-edge, state acquisition Set up the equipment To test the time interval accuracyTo test the time interval accuracy Connect and configure the logic analyzer 3 Set up the function generator according to the following tabled Select an Acquisition Depth of 256K Acquire and verify the test data f Click OK to close the Value dialog Settings Performance Test RecordChapter 3 Testing Performance Performance Test RecordPerformance Test Record Chapter 3 Testing PerformanceSettings Performance Test Record continuedPerformance Test Record Chapter 3 Testing PerformanceSettings Performance Test Record continuedChapter 3 Testing Performance Performance Test RecordCalibrating and Adjusting Logic analyzer calibration Chapter 4 Calibrating and AdjustingTroubleshooting a Position the chassis so the handle side is up To install the fan guard2 Install the fan guard onto the chassis b Slide the fan guard onto the chassis over the fansTo use the flowcharts c Install the optional screws as shownChapter 5 Troubleshooting Troubleshooting the Agilent 1680A,AD-seriesTroubleshooting the Agilent 1680A,AD-series Chapter 5 Troubleshooting Troubleshooting the Agilent 1680A,AD-seriesChapter 5 Troubleshooting Troubleshooting the Agilent 1680A,AD-seriesChapter 5 Troubleshooting Troubleshooting the Agilent 1680A,AD-seriesChapter 5 Troubleshooting Troubleshooting the Agilent 1680A,AD-seriesChapter 5 Troubleshooting Troubleshooting the Agilent 1680A,AD-seriesChapter 5 Troubleshooting Troubleshooting the Agilent 1680A,AD-seriesTo check the power-up tests To test the power supply voltages5 Using DVM, measure the power supply voltages To test the LCD display signals To test disk drive voltages 6 Troubleshoot a flexible disk drive. a Apply power to the instrument To verify the CD-ROM To reinstall the operating system To recover the operating systemProblems running the Application Software Problems with the Operating System Chapter 5 Troubleshooting Troubleshooting the Agilent 1690A,AD-seriesTroubleshooting the Agilent 1690A,AD-series Chapter 5 Troubleshooting Troubleshooting the Agilent 1690A,AD-seriesChapter 5 Troubleshooting Troubleshooting the Agilent 1690A,AD-seriesChapter 5 Troubleshooting Troubleshooting the Agilent 1690A,AD-seriesTo verify connectivity Task ManagerDevice Manager To test the power supply voltagesa Click on the Start button in the task bar, then select Shut Down Chapter 5 Troubleshooting Troubleshooting the Agilent 1690A,AD-seriesChapter 5 Troubleshooting General TroubleshootingTo run the self-tests General Troubleshooting6 Set the reporting level Chapter 5 TroubleshootingGeneral Troubleshooting 7 Select the tests you want to run 8 Click Start9 Click Close to close the Analysis System Self Tests dialog Red LED Acquisition board status LEDsGreen LEDs Normal OperationTo test the logic analyzer probe cables 1 Turn on the equipment and the logic analyzerCOMP Disabled LED Off COMP Disabled LED Off5 Configure the pod under test To check the BNC Trigger input/output signals Return to Troubleshooting flowchartanalyzer Trigger In BNC To test the auxiliary power RecommendedReplacing Assemblies Prepare the instrument for disassembly 1680A,AD-series disassembly/assemblyTo remove the chassis from the sleeve To remove the acquisition board Steps to remove probe shroud from acquisition board To remove the power supply To remove the hard disk drive To remove the CD-ROM drive assembly To remove the flexible disk drive 5 Reverse this procedure to install the flexible disk drive PCI display board slot slot covers slot 3 and slot To remove the PCI boardsPCI IEEE 1394 board slot 2, closest to the CD-ROM drive PCI IEEE 1394 board IEEE 1394 cable PCI display board video cablepower cable from connector CN1 CPU fan cable To remove the motherboardaudio cable from connector CD Transfer the I/O panel to the replacement board 5 Install 6 hex studs onto the motherboard ports and tighten on/off cable accessed from the bottom of the chassis keyboard cable To remove the front panel assemblyinverter cable 6 Reverse this procedure to install the front panel assembly Remove the front panel circuit board To disassemble the front panel assemblyRemove the on/off switch Remove the LCD displayTo remove the distribution board To remove the inverter board To remove the fans To remove the cable tray 1690A,AD-series disassembly/assembly 1690A,AD-series disassembly/assemblyPrepare the instrument for disassembly To remove the chassis from the sleeveTo remove the fascia 4 Remove the fascia away from the front panel 1 Do the following procedures To remove the acquisition boardTo remove the deck To remove the power supplyTo remove the distribution board To remove the fans To remove the line filter To remove the front panel and front frame 1690A,AD-series disassembly/assembly Chapter 6 Replacing AssembliesReplaceable Parts Parts not listed Parts listedReplaceable Parts Ordering Direct mail order systemReplaceable Parts List Exchange AssembliesChapter 7 Replaceable Parts Exploded ViewExploded view of the Agilent 1680A,AD-series logic analyzer Replaceable Parts Agilent 1680A,AD-Series Replaceable PartsChapter 7 Replaceable Parts Ref. DesM4.0 x 0.70 8 mm T20 PH power supply to Replacement Pod Grounds - 5” QtyCD-ROM drive assembly to chassis, sleeve to Chapter 7 Replaceable PartsRef. Des Chapter 7 Replaceable PartsReplaceable Parts DescriptionChapter 7 Replaceable Parts assembly, IEEE 1394 cable to chassisPower Supply Cable 14- and 10- pin power supply Replaceable PartsReplaceable Parts Front Panel AssemblyChapter 7 Replaceable Parts Ref. DesRef. Des Chapter 7 Replaceable PartsReplaceable Parts DescriptionChapter 7 Replaceable Parts Exploded ViewExploded view of the Agilent 1690A,AD-series logic analyzer Replaceable Parts Agilent 1690A,AD-Series Replaceable PartsChapter 7 Replaceable Parts Ref. DesChapter 7 Replaceable Parts Fascia Assembly includes the followingHex Nut acquisition board BNC connectors to Replaceable PartsReplaceable Parts Power Supply On/Off Cable power supply toChapter 7 Replaceable Parts Ref. DesPlug Type Power Cables and Plug ConfigurationsChapter 7 Replaceable Parts CableCable Chapter 7 Replaceable PartsPlug Type Plug DescriptionTheory of Operation Agilent 1680A,AD-Series Logic Analyzer Block Diagram Block-Level TheoryChapter 8 Theory of Operation Agilent 1680A,AD-series Logic Analyzer Theory Agilent 1680A,AD-series Logic Analyzer TheoryAcquisition Board Power SupplyLogic Acquisition Board Block Diagram Comparators. Two 9-channel comparators interpret the incoming data and clock signals as either high or low, depending on where the user-programmable threshold is set. The threshold voltage of each pod is individually programmed, and the voltage selected applies to the clock channel as well as the data channels of each pod A field programmable gate array FPGA bridges the 1394 interface to the rest of the acquisition board components. It also serves as the memory controller for the acquisition memory Power Distribution Board Front Panel BoardPower Distribution Board Agilent 1690A,AD-series Logic Analyzer TheoryPower Supply Acquisition BoardSelf-Tests Descriptions Power-up Self-Tests 1680A,AD-seriesConnectivity Tests 1690A,AD-series Acquisition Board Self Tests Logic Analyzer Self-Tests Chapter 8 Theory of Operation Self-Tests Descriptionsconfigured to take a simple measurement. Test data is then created at the comparators and an acquisition taken. The resulting data is then downloaded and compared with known values Chapter 8 Theory of Operation Self-Tests DescriptionsNotices WarrantySafety Notices Manual Part Number