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Agilent Technologies 46A To clean the instrument, To clean the display monitor contrast filter

Models: 54835A 46A 45A

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Chapter 2: Preparing for Use

To clean the instrument

		To clean the instrument
	• Clean the oscilloscope with a soft cloth dampened with a mild soap and water solution.

CAUTION		BE CAREFUL TO AVOID DAMAGING COMPONENTS!
		Do not use too much liquid when cleaning the oscilloscope. Water can enter the front panel
		keyboard, damaging sensitive electronic components.

To clean the display monitor contrast filter

• Clean the display monitor contrast filter using glass cleaner and lens tissue or a soft cloth.

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Agilent Technologies 46A, 45A To clean the instrument, To clean the display monitor contrast filter, Preparing for Use

Contents

Agilent Model 54835A/45A/46A Oscilloscopes Service GuideService Policy Trigger setup controls set mode and basic parametersGlance Ease of use with high performanceTrigger Setup Auxiliary Trigger Input PowerDisplay and Graphical Interface HorizontalIn This Book Contents 1 General Information Contents3 Testing Performance 4 Calibrating and Adjusting6 Replacing Assemblies 5 Troubleshooting8 Theory of Operation 7 Replaceable PartsGeneral Information General Information Instruments covered by this service guideOscilloscopes Covered by this Service Guide Accessories supplied Accessories suppliedUsers Quick Start Guide Programmer’s Guide and Programmer’s Quick ReferenceOptions available Options availableAccessories available Accessories availableChapter 1 General Information Service Kit includes service software and fan safety shield Accessories availableFan Safety Shield clips onto side of chassis with cover removed Chapter 1 General InformationSpecifications & characteristics Specifications & characteristicsChapter 1 General Information AcquisitionAgilent 54835A - 500 MHz 4-channel mode Specifications & characteristics VerticalAgilent 54845A - 1.5 GHz 2-channel mode Agilent 54845A - 1.0 GHz 4-channel modeChapter 1 General Information Specifications & characteristicsHorizontal 0 to -1 s or one full screen widthChapter 1 General Information Specifications & characteristics TriggerChapter 1 General Information Specifications & characteristics DisplayMeasurements Chapter 1 General Information Specifications & characteristics FFTComputer System/ Storage Chapter 1 General Information Specifications & characteristicsCAT I and CAT II Definitions 1-13Agilent Technologies 54835A/45A/46A general characteristics Agilent Technologies 54835A/45A/46A general characteristicsGeneral Characteristics Chapter 1 General InformationChapter 1 General Information Agilent Technologies 54835A/45A/46A general characteristicsChapter 1 General Information Recommended test equipmentRecommended test equipment Recommended Test EquipmentPreparing for Use Preparing for Use Setting Up the Oscilloscope To inspect the instrumentTo inspect the instrument To connect power To connect powerA Three-wire Power Cable is Provided To attach the optional trackball To connect the mouse or other pointing deviceTo connect the mouse or other pointing device To attach the optional trackball To connect to the LAN card To connect the keyboardTo connect the keyboard To connect oscilloscope probes To connect oscilloscope probesTo connect a printer To connect a printerTo connect the GPIB cable To connect an external monitorTo connect an external monitor To tilt the oscilloscope upward for easier viewing To tilt the oscilloscope upward for easier viewingTo power on the oscilloscope To power on the oscilloscopeYou Can Configure the Backlight Saver 3 Press the Default Setup key on the front panel To verify basic oscilloscope operation1 Connect an oscilloscope probe to channel 4 Press the Autoscale key on the front panelTo clean the display monitor contrast filter To clean the instrumentTo clean the instrument Chapter 2 Preparing for UseSpecifications Testing PerformanceTo test the dc calibrator Testing Interval Testing PerformanceEquipment Required Self-Test VerificationPerformance Test Procedures SpecificationsTest Record Operating Hints2 Enable the graphical interface To test the dc calibrator3 Press Default Setup to set the oscilloscope to default conditions 1 Connect the multimeter to the front panel Aux Out BNC9 The DVM should read near -2.500 V. Record the reading. V2 = To test input resistance 1 Connect the equipment To test voltage measurement accuracyTo test voltage measurement accuracy Equipment Required2 Press Default Setup to set the oscilloscope to default conditions 9 Select Channel 1 from the Setup menu 16 With the channel keys, set the active channel OFF and the next ON 2 Press Default Setup to set the oscilloscope to default conditions To test offset accuracy3 Select Acquisition from the Setup menu 6 Select Channel 1 from the Setup menu11 Repeat steps 6 through 10 for the other lines in the table Specification Equivalent Time To test bandwidthTo test bandwidth Real Time= 20log response dB487 mV = 20log 10 0.871 = -1.19dB20 Select Acquisition from the Setup menu To test time measurement accuracy 10 Select Acquisition from the Setup menu Source Selection for Delta Time Measurement Acquisition Setup for Equivalent Time Procedure16 Change the signal generator frequency to 100 MHz 10 ns period New Measurement Settings for Delta Time Measurement 2 Select Acquisition from the Setup menu 7 Clear measurements 1 Press Default Setup 2 Select Acquisition from the Setup menu To test trigger sensitivityChapter 3 Testing Performance 4 Set horizontal time/div to 5 ns/div5 Turn on Channel 1 and turn off all other channels 17 Adjust the horizontal sweep speed to 1 ns/div Page Performance Test Record Agilent TechnologiesAgilent 54845A/46A 395 ns ± 53 ps 394.922 to 395.078 ns394.947 to 395.053 ns 300 mVpp at 500 MHzTo check the power supply Calibrating and AdjustingEquipment Required Operating HintsSelf Calibration Interval and Hardware Adjustments Calibrating and AdjustingMainframe Cal Factor Memory Error Equipment RequiredCalibration Procedures Loading Default Oscilloscope SettingsLoading New Software Chapter 4 Calibrating and AdjustingChapter 4 Calibrating and Adjusting To check the power supplyTo check the power supply Refer to the following figure for testpoint locationsConnect the common lead of the voltmeter to the GND test point To check the 715 Hz auxiliary output probe compensation squarewave Chapter 4 Calibrating and Adjusting To check the flat panel display FPDFlat-Panel Display Specifications When to Use this Procedure5 Click Start Chapter 4 Calibrating and AdjustingTo check the flat panel display FPD 8 Repeat steps 6 and 7 for all colors 6 Select a color by clicking the radio button for that colorTo check the flat panel display FPD To run the self calibration To run the self calibrationEquipment Required Let the Oscilloscope Warm Up Before Running the Self CalibrationTo run the self calibration 4 Click Start, then follow the instructions on the screenClear Cal Memory Protect to Run self calibration If calibration failsPage Troubleshooting Safety TroubleshootingESD Precautions Tools RequiredDefault Setup To install the fan safety shieldTo troubleshoot the instrument To troubleshoot the instrumentTroubleshooting Chapter 5 TroubleshootingTroubleshooting To troubleshoot the instrumentA Perform power-up Primary Trouble IsolationB Check the display Primary Trouble IsolationD Check the front panel C Run oscilloscope self-testsE Run the Knob and Key selftest and the LED selftest Primary Trouble IsolationNo Display Trouble Isolation Chart Chapter 5 TroubleshootingCheck fan connections and power-on Power-upA Remove the cabinet and install the fan safety shield No Display Trouble IsolationB Check the fan connections sequencePower-On Sequence with External Monitor Connected Chapter 5 TroubleshootingPower-on No Display Trouble IsolationNo Display Trouble Isolation Chapter 5 TroubleshootingPOST memory test message Power Supply Trouble Isolation Flowchart Chapter 5 TroubleshootingNo Display Trouble Isolation A Check the power supply voltages Power Supply Trouble IsolationPower Supply Trouble Isolation Power Supply Voltage LimitsD Override the Remote Inhibit signal C Replace any shorted assemblyPower Supply Trouble Isolation Reconnect Assemblies and CablesPower Supply Trouble Isolation F Replace the power supplyE Check +15 V Bias and Remote Inhibit cabling G Check for the oscilloscope display onscreenTo check probe power outputs To check probe power outputsTo check the keyboard To check the keyboard1 Disconnect the power cord and remove the cover To check the LEDs To check the LEDsTest by Rows To check the LEDs 5 When you are finished, click CloseTo check the motherboard, CPU, and RAM To check the SVGA display board video signals To check the SVGA display board video signalsTo check the backlight inverter voltages To check the backlight inverter voltagesChapter 5 Troubleshooting POST Code Listing AMI Motherboard onlyPOST Code Listing AMI Motherboard only POST Code ListingPOST Code Listing AMI Motherboard only Chapter 5 TroubleshootingUncompressed Initialization Codes POST Code Listing AMI Motherboard only Chapter 5 TroubleshootingCompleted post-video ROM test processing. If the EGA/VGA controller is not found, performing POST Code Listing AMI Motherboard only Chapter 5 TroubleshootingThe memory size was adjusting for relocation and shadowing. Clearing the Hit message next POST Code Listing AMI Motherboard only Chapter 5 TroubleshootingRequired initialization before the Coprocessor test is over. Initializing the Coprocessor next To configure the motherboard jumpers and set up the BIOS To configure the motherboard jumpers and set up the BIOS5-30 To configure the motherboard jumpers and set up the BIOSTo configure the motherboard jumpers and set up the BIOS Agilent Technologies Service Note Describes Upgrade DetailsTo configure the motherboard jumpers and set up the BIOS Chapter 5 TroubleshootingConfiguring the AMI Series 727 Motherboard Jumpers Series 727 Motherboard Jumpersfan will cause the CPU to overheat and malfunction AVOID DAMAGE TO THE CPU BY CORRECTLY CONFIGURING THE JUMPERSA 100-MHz Clock Is Required 5-335 Press F1 to run the WINBIOS setup 1 Connect the power cable to the oscilloscopeTo configure the motherboard jumpers and set up the BIOS To configure the AMI Series 727 WINBIOS ParametersWINBIOS Keyboard Commands 6 Do the following within the setup programSystem Keyboard Absent Do steps h-l ONLY if Your System has 64 Mb RAMChapter 5 Troubleshooting 7 Exit the Setup program, saving the changes you madeTo configure the motherboard jumpers and set up the BIOS Series 727 System Configuration SettingsConfiguring the AMI Series 757 Motherboard for 200 MHz CPU Chapter 5 TroubleshootingVRM Connector J5, J6, J7, J8To configure the jumpers, set J5, J6, J7, J8, and J14 as shown in the following figure. Note that the pairs of pins on J6 and J7 are shorted the pairs of pins on J5 and J8 are open and all pins on J14 are open XXXXXX KB OK WAIT INS Pressed RUN SETUP Press F1 to Run SETUP AMI Atlas-III PCI/ISA BIOS Release AMD-K6tm-/200 Checking NVRAMPress F2 to load default values and continue Messages Vary SlightlyTo configure the motherboard jumpers and set up the BIOS 6 Do the following within the setup programWINBIOS Keyboard Commands When to Do this Procedurec Exit the BIOS Setup and save the changes you made To configure the motherboard jumpers and set up the BIOSSeries 757 System BIOS Settings with 1.44 Mbyte floppy drive To configure the motherboard jumpers and set up the BIOS Chapter 5 TroubleshootingConfiguring the AMI Series 757 Motherboard for 300 MHz CPU Series 757 Rev D Motherboard JumpersThe jumpers you must check are J5, J6, J7, J8, J14, J15 and J16. You must also install a 2.2 5 Press F1 to run the WINBIOS setup 1 Connect the power cable to the oscilloscopeTo configure the motherboard jumpers and set up the BIOS 3 Connect an external keyboard and a mouse to the oscilloscopec Under Standard Setup, select Floppy A. Select Not Installed. Exit the Floppy A block. d Under Standard Setup, select Floppy B. Select Not Installed. Exit the Floppy B block WINBIOS Keyboard CommandsSystem Keyboard Absent Series 757 System BIOS Settings with 120 Mbyte floppy drive To configure the motherboard jumpers and set up the BIOSTo configure the motherboard jumpers and set up the BIOS 1 Set the PWR Power supply type select jumper toUse this procedure to set the FIC VA-503A motherboard BIOS To Configure the FIC Series VA-503A Motherboard BIOS Parameters5-48 To troubleshoot the acquisition system To troubleshoot the acquisition systemTo troubleshoot the acquisition system Chapter 5 TroubleshootingAcquisition Trouble Isolation 1 of To troubleshoot the acquisition system Chapter 5 TroubleshootingAcquisition Trouble Isolation 2 of To troubleshoot the acquisition system Chapter 5 TroubleshootingAcquisition Trouble Isolation 3 of To troubleshoot the acquisition system A A to D Converter FailedReturn the Known Good Attenuator to Original Channel B FISO failed E Temperature Sense failedC Probe Board failed D Offset DAC failedK Interpolator failed To troubleshoot attenuator failures To troubleshoot attenuator failures4 Repeat steps 1 through 3 for the remaining input channels 2 Press the Default Setup key, then the Autoscale keyTo troubleshoot attenuator failures Swapping AttenuatorsTo troubleshoot attenuator failures Chapter 5 TroubleshootingEnable the Graphical Interface Software RevisionsSelect About Infiniium... from the Help Menu Software RevisionsPage Replacing Assemblies ESD Precautions Replacing AssembliesTools Required 2 Remove all accessories from the instrument To return the instrument to Agilent Technologies for service3 Protect the instrument by wrapping it in plastic or heavy paper 5 Seal the shipping container securelyTo remove and replace the cover To disconnect and connect Mylar flex cables 1 Disconnect the power cable and remove the cover To remove and replace the AutoProbe assemblyTo remove and replace the AutoProbe assembly To remove and replace the AutoProbe assembly 3 To replace the AutoProbe assembly, reverse the above procedureAVOID DAMAGE TO THE RIBBON CABLE AND FACEPLATE To remove and replace the probe power and control assembly To remove and replace the probe power and control assemblyAvoid Interference with the Fan To remove and replace the backlight inverter board To remove and replace the front panel assemblyTo remove and replace the backlight inverter board 6-10 To remove and replace the front panel assembly9 To replace the front panel assembly, reverse the above procedure Keep Long Screws Separate for Re-assembly To remove and replace the keyboard and flat-panel display assembliesTo remove and replace the keyboard and flat-panel display assemblies PREVENT GLASS BREAKAGE prevent cleaner from corroding FPD connections6-13 To remove and replace the keyboard and flat-panel display assembliesTo remove and replace the acquisition board assembly To remove and replace the acquisition board assemblyChapter 6 Replacing Assemblies To remove and replace the LAN interface boardTo remove and replace the LAN interface board To remove and replace the GPIB interface board To remove and replace the GPIB interface boardAcquisition cable W11 Keyboard cable W16 To separate the scope interface board and SVGA display board To remove and replace the Option 200 sound card To remove and replace the Option 200 sound cardTo remove and replace the hard disk drive To remove and replace the hard disk driveTo remove and replace the motherboard To remove and replace the floppy disk driveTo remove and replace the floppy disk drive 7 Disconnect these cables from the motherboard 6-23 To remove and replace the motherboardTo remove and replace the power supply To remove and replace the power supplyTo remove and replace the fan To remove and replace the fanTo remove and replace the CPU To remove and replace the CPUTo remove and replace RAM SIMMs or SDRAM DIMMs To remove and replace RAM SIMMs or SDRAM DIMMsTo remove and replace an attenuator To remove and replace an attenuatorDo Not Remove the Attenuators from the Acquisition Board To remove and replace an attenuator Chapter 6 Replacing AssembliesIf You Permanently Replace Parts Removing an AttenuatorTo reset the attenuator contact counter 11 In the Attenuator Channel box, select the channel you are changing To reset the attenuator contact counter13 Repeat for each channel you need to change Chapter 6 Replacing AssembliesTo remove and replace an acquisition hybrid To remove and replace an acquisition hybrid4 Loosely install the two M2 pan-head screws 3 Remove the two screws to remove the connector 2 Follow the procedure for removing the hybridThe Hybrid Connector 1 Remove the acquisition board from the instrumentOrdering Replaceable Parts Listed Parts Unlisted Parts Replaceable PartsPower Cables and Plug Configurations Exploded Views Replaceable Parts ListOrdering Replaceable Parts Replaceable PartsPower Cables and Plug Configurations Power Cables and Plug ConfigurationsPower Cables and Plug Configurations Chapter 7 Replaceable PartsChapter 7 Replaceable Parts Exploded ViewsExploded Views Chapter 7 Replaceable Parts Fan and Acquisition AssemblyExploded Views Chapter 7 Replaceable Parts Power Supply and PC MotherboardExploded Views Exploded Views Chapter 7 Replaceable PartsExploded Views Chapter 7 Replaceable PartsExploded Views Chapter 7 Replaceable PartsChapter 7 Replaceable Parts 120 Mbyte Floppy Drive Configuration for PC Motherboard ConfigurationExploded Views Chapter 7 Replaceable Parts FIC VA-503A Motherboard for PC Motherboard ConfigurationExploded Views W17W20 A15 W14 A5 W11 A19Exploded Views Chapter 7 Replaceable PartsChapter 7 Replaceable Parts Sleeve and Accessory PouchExploded Views Old versionChapter 7 Replaceable Parts Attenuator AssemblyExploded Views Replaceable Parts List Replaceable Parts ListChapter 7 Replaceable Parts Replaceable Parts List Replaceable PartsExchange Assemblies External Chassis PartsChapter 7 Replaceable Parts Replaceable Parts List Replaceable PartsDescription Adapter board w/ 4 connectors - 120 MB drive to ribbon cables Replaceable Parts List Replaceable PartsChassis assembly compatible w/FIC motherboard configuration Chapter 7 Replaceable PartsAll Configurations Replaceable Parts List Replaceable PartsPROBE I/O ASSEMBLY older style consists of MP16, MP54, and W13 Chapter 7 Replaceable PartsINSULATOR-120 Mbyte FLOPPY DRIVE only on upgraded units Replaceable Parts List Replaceable PartsChapter 7 Replaceable Parts CablesACQUISITION CABLE w/ AMP-LATCHr connector on each end Replaceable Parts List Replaceable PartsACQUISITION CABLE w/ AMP-LATCHr connector on one end Chapter 7 Replaceable PartsPage Block-Level Theory Power Supply Assembly FPD Monitor Assembly Theory of OperationSVGA Display Card GPIB Interface Card Probe Power and Control Acquisition System Front Panel Disk Drives Attenuators MotherboardChapter 8 Theory of Operation Block-Level Theory Theory of OperationAcquisition System Block-Level TheoryFront Panel Disk DrivesBlock-Level Theory Probe Power and ControlSVGA Display Card GPIB Interface CardChapter 8 Theory of Operation Acquisition Block DiagramBlock-Level Theory TIME BASEAcquisition Theory Attenuator TheoryAttenuator Theory Acquisition Theory Acquisition Modes Acquisition TheoryScope Interface Board Page DECLARATION OF CONFORMITY SafetyProduct Name Model NumbersProduct Regulations SafetyEmissions ImmunitySafety Document WarrantySafety Symbols Hazardous voltage symbolLimitation of Warranty Product WarrantyExclusive Remedies Assistance