Agilent Technologies 54624A, 54621D, 54622D, 54622A, 54621A manual Safety

Page 110

Safety

Notices

This apparatus has been designed and tested in accor- dance with IEC Publication 1010, Safety Requirements for Mea- suring Apparatus, and has been supplied in a safe condition. This is a Safety Class I instru- ment (provided with terminal for protective earthing). Before applying power, verify that the correct safety precautions are taken (see the following warn- ings). In addition, note the external markings on the instru- ment that are described under "Safety Symbols."

Warnings

•Before turning on the instru- ment, you must connect the pro- tective earth terminal of the instrument to the protective con- ductor of the (mains) power cord. The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. You must not negate the protective action by using an extension cord (power cable) without a protective conductor (grounding). Grounding one conductor of a two-conductor outlet is not sufficient protec- tion.

•Only fuses with the required rated current, voltage, and spec- ified type (normal blow, time delay, etc.) should be used. Do not use repaired fuses or short- circuited fuseholders. To do so could cause a shock or fire haz- ard.

•If you energize this instrument by an auto transformer (for volt- age reduction or mains isola- tion), the common terminal must be connected to the earth termi- nal of the power source.

•Whenever it is likely that the ground protection is impaired, you must make the instrument inoperative and secure it against any unintended operation.

•Service instructions are for trained service personnel. To avoid dangerous electric shock, do not perform any service unless qualified to do so. Do not attempt internal service or adjustment unless another per- son, capable of rendering first aid and resuscitation, is present.

•Do not install substitute parts or perform any unauthorized modification to the instrument.

•Capacitors inside the instru- ment may retain a charge even if the instrument is disconnected from its source of supply.

•Do not operate the instrument in the presence of flammable gasses or fumes. Operation of any electrical instrument in such an environment constitutes a definite safety hazard.

•Do not use the instrument in a manner not specified by the manufacturer.

To clean the instrument

If the instrument requires clean- ing: (1) Remove power from the instrument. (2) Clean the exter- nal surfaces of the instrument with a soft cloth dampened with a mixture of mild detergent and water. (3) Make sure that the instrument is completely dry before reconnecting it to a power source.

Safety Symbols

!

Instruction manual symbol: the product is marked with this sym- bol when it is necessary for you to refer to the instruction man- ual in order to protect against damage to the product..

Hazardous voltage symbol.

Earth terminal symbol: Used to indicate a circuit common con- nected to grounded chassis.

Agilent Technologies Inc.

P.O. Box 2197

1900 Garden of the Gods Road

Colorado Springs, CO 80901-2197, U.S.A.

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Contents Agilent 54621D/22D Mixed-Signal Oscilloscope Softkeys extend the functionality of command keys Display shows current input signalsHorizontal Controls select sweep speed and delay parameters UtilitiesThis Book Contents Contents Solving General Problems with the OscilloscopesTroubleshooting the Oscilloscope General Information General Information To inspect package contents General Information Package contents for 54620-Series Oscilloscopes To inspect options and accessories Option DescriptionAccessories available Model DescriptionPower Cords Plug Type Cable Part NumberAcquisition Digital Channels on 54621D and 54622D only Performance CharacteristicsAcquisition Analog Channels Vertical System Analog Channels Probe ID Agilent/HP Auto probe sense Tek CompatibleVertical System Digital Channels 54621D and 54622D only Accuracy = ±2.0%80 mV + 0.4%80 mV = ±1.92 mVHorizontal Sample rate of 200/400 MSa/sTrigger System CanExternal EXT Triggering Analog Channel TriggeringDigital D15 D0 Channel Triggering 54621D and 5462 2D Measurement Features Display SystemFFT StorageGeneral Characteristics Power RequirementsPreparing the Oscilloscope for Use Preparing the Oscilloscope for Use Setting up the Oscilloscope To adjust the handle To adjust the handleTo power-on the oscilloscope To power-on the oscilloscopePress the power switch Intensity control To adjust the display intensityTo adjust the display intensity To connect the oscilloscope probes To connect the oscilloscope probesTo compensate your probe Press AutoscaleTo use the digital probes mixed-signal oscilloscope only To use the digital probes mixed-signal oscilloscope onlyGrabber Signal Lead Ground Lead Grabber Signals Ground To connect a printer To connect a printerTo connect an RS-232 cable To verify basic oscilloscope operation To verify basic oscilloscope operationPress the Autoscale key on the front panel Verifying Basic Oscilloscope OperationGetting started using the oscilloscope interface To verify basic oscilloscope operation Using Quick Help Preparing the Oscilloscope for Use Loading a language from floppy disk Loading a language from floppy diskCleaning the oscilloscope Disconnect power from the instrumentTesting Performance Testing Performance If a performance test failsList of Test Equipment Equipment Critical SpecificationsList of Test Equipment Part NumberMaterials Required to Construct the Test Connectors To construct the test connectorTo construct the test connector Constructing the 8-by-2 ConnectorTo test the 54621D/22D Oscilloscope digital channels To test the 54621D/22D Oscilloscope digital channelsPress the Autoscale key To verify digital channel threshold accuracy To verify digital channel threshold accuracyMethod 1 Using the Test Connector Method 2 Using the Test Fixture Threshold Accuracy Voltage Test Settings Threshold voltage setting DC offset voltage setting LimitsTo verify voltage measurement accuracy Set up the oscilloscopeEquipment Critical Specifications Recommended Model/Part To verify voltage measurement accuracySettings Used to Verify Voltage Measurement Accuracy MV/Div 616 mV 384 mVUsing a Blocking Capacitor to Reduce Noise Use a Blocking Capacitor to Reduce NoiseEquipment Required to Verify Bandwidth To verify bandwidthTo verify bandwidth Change the time base to 5 ns/div Calculate the response using this formulaSignal Generator Frequency Setting Selected Channel 54621A/21D 54622A/22D 54624ATo verify horizontal ∆t and 1/∆t accuracy To verify horizontal Dt and 1/Dt accuracy54621A and 54621D only Measure the following54622A/22D/24A only Equipment Required to Verify Trigger Sensitivity To verify trigger sensitivityTo verify trigger sensitivity Test Internal Trigger Sensitivity Test External Trigger Sensitivity Agilent 54622A/22D/24A Performance Test Record Agilent 54621A/21D Performance Test Record Agilent 54621A/54621DCalibrating and Adjusting Calibrating and Adjusting Hazardous Voltages To adjust the power supply To adjust the power supplyPrepare the oscilloscope for the voltage adjustment Digital multimeterPower Supply Voltage Tolerances Supply Voltage Tolerance+3.3V Adjustment To perform User Cal To perform User CalWhen to Adjust the Oscilloscope Display To adjust the oscilloscope displayTo adjust the oscilloscope display Do not adjust Sub Bri or Cont controls96,= Troubleshooting Troubleshooting Read All Cautions and WarningsSolving General Problems with the Oscilloscopes If there is no trace displayIf the trace display is unusual or unexpected If the trace display is unusual or unexpectedIf you cannot see a channel If you cannot see a channelTroubleshooting the Oscilloscope Equipment Required to Troubleshoot the OscilloscopeTo construct your own dummy load Connector Load Amps Resistor WattsLocation of the Low Voltage Power Supply Connectors To construct your own dummy loadTo check out the oscilloscope Connect the power cord, then turn on the oscilloscopeTo check out the oscilloscope Signal Name Frequency Pulse Width Voltage Display Signals on the System Board All OscilloscopesLow Voltage Power Supply Tolerances Location of the Fan Connector Is the fan running?Low Voltage Power Supply Test Points To check the Low Voltage Power SupplyTo check the Low Voltage Power Supply If the Fuse is Blown Beware of Hazardous VoltagesTo run the internal self-tests To run the internal self-testsReplacing Assemblies Replacing Assemblies Avoid Electrical Shock Removing the cabinet To remove the cabinetTo remove the cabinet Removing the fan To remove the fanTo remove the fan Removing the floppy drive To remove the floppy driveTo remove the floppy drive Removing the intensity shaft and front panel To remove the front panelTo remove the front panel Removing the display To remove the displayTo remove the display Unhooking the power switch shaft Preparing to remove the system board To remove the system boardTo remove the system board Removing the system board Disconnecting ground wire and ribbon cable To remove the power supplyTo remove the power supply Unhooking the power switch shaft Removing the power supply To remove the keyboard assembly To remove the keyboard assemblyLift the keyboard assembly straight out Removing the keyboard assemblyTo remove the handle To remove the handleReplaceable Parts Replaceable Parts To order a replacement part To order a replacement partExploded View of the 54621A/22A/24A/21D/22D Oscilloscope To order a replacement part Replaceable Parts Reference Agilent Part Qty Description Designator NumberMP1 Input Cable 54621D/22D only Option Accessory pouch and front-panel cover Probes Product Name Manufacturer’s NameManufacturer’s Address Model NumbersSound Pressure Level SafetyProduct Regulations Regulatory Information for CanadaSafety Document Warranty Agilent Technologies, Inc
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