HP 1GSa/s Digitizing Oscilloscope 16532A manual Verifying the System Clock, Procedure

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HP 16532A - Service

Verifying the System Clock

This procedure is provided as a troubleshooting aid to verify that the 100 MHz System Clock oscillator is functioning properly. The 100 MHz oscillator is the primary time reference used for all of the acquisition clock periods. The test limits provided are the test limits for the 100 MHz oscillator only. If the readings are outside of the test limits, the oscilloscope module will not operate properly.

		Recommended
Equipment Required	Critical Specification	Model/Part Number
Frequency Counter	> 100 MHz, 50 W	HP 5315A Option 003
Oscilloscope	Bandwidth ³ 100 MHz, Real Time	HP 54502A
Cable	50 W BNC (m to m) 48-inch	HP 10503A

Procedure:

1.Connect the BNC cable from the AC CAL OUTPUT connector on the rear panel of the HP 16532A oscilloscope module to the input of the frequency counter.

2.On the HP 16532A oscilloscope module, set the following parameters, in the order given.

Menu	Selection	Setting
Channel	s/Div	1 ns
Trigger	Auto-Trig	Off
Calibration	Mode	Service Cal
	Procedure	Osc Out
	Signal	Sample Clk

3.Select RUN-REPETITIVE. Observe the frequency displayed on the frequency counter and verify that it is 100 MHz ± 0.005%.

4.Disconnect the BNC cable from the frequency counter and connect the cable to the input of the HP 54502A Oscilloscope.

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Contents HP 16532A Safety Symbols Safety ConsiderationsContents Section Replaceable Parts ServiceCalibration List of Tables Page Table of Contents Page Module Covered by This Manual Safety RequirementsIntroduction Accessories Available Accessories SuppliedSpecifications Operating CharacteristicsRise Time2 1.4 ns HP 16532A SpecificationsWaveform Record Length 8000 points Vertical dc Gain Accuracy4 ± 1.5% of full scaleTimebase HP 16532A Operating CharacteristicsVertical at BNC Digitizer TriggeringTrigger Level Range Trigger ModesDisplay Modes Waveform DisplayMeasurement Aids Operating Environment Setup AidsEquipment Critical Specifications Recommended Model USE Page Table of Contents Page Initial Inspection Safety Requirements Power RequirementsModule Installation Preparation for UseProcedure Installation ConsiderationsEndplate Overlap Bottom Sequence Operating Environment Tagging for ServiceStorage PackagingTable of Contents Page Performance Test Interval Performance Test ProceduresTest Record DC CAL Output Test AC CAL Output Test Input Resistance SpecificationEquipment Required Critical Specification Model/Part Number Page Voltage Measurement Accuracy Voltage Measurement Accuracy Test Div Offset Supply Upper Limit Lower Limit Offset Accuracy Procedure Zero-Input OffsetDiv Offset Supply Min Max DC Input OffsetBandwidth V1MHz Time Measurement Accuracy Menu Selection Setting Trigger Sensitivity RUN Repetitive Performance Test Record Paragraph No Test Results Yes No Page Table of Contents Page Maintaining System Integrity Calibration Protection SwitchCalibration Interval Calibration Instrument WarmupLocation of the PROTECT/UNPROTECT Switch Setting the PROTECT/UNPROTECT Switch to UnprotectEquipment Required for Calibration Loading the Default Calibration FactorsCalibrate Vert Cal of the Self Cal menu as follows Calibrate Delay of the Self Cal menu as followsSelf Cal Menu Calibrations Calibrate the Logic Trigger of the Self Cal menu as follows Calibrate the Time Null of the Self Cal menu as followsExt Trig Null Calibration Connections Calibrate the Ext Trig Null of the Self Cal menu as followsSealing the Mainframe Setting the PROTECT/UNPROTECT Switch to ProtectTable of Contents Page Abbreviations Replaceable Parts ListOrdering Information Exchange AssembliesDirect Mail Order System Reference Designator and Abbreviations Parts Identification HP Part Qty Number Reference DesignatorDescription Mfr Code Mfr Part NumberPage Table of Contents Page Module Block Diagram and The- ory of Operation Introduction Safety RequirementsMain Assembly Theory of Operation Attenuator Theory of OperationHP 16532A Oscilloscope Block Diagram Page Self-Tests Self-Test Access ProcedureLoad Test System Screen Touch the Functional Tests field Functional Tests ScreenA/D Test Run Screen Exit Test System Screen Data Memory Test Self-Test DescriptionsTimebase Test TestTroubleshooting Aids TroubleshootingVerifying the System Clock Page 1 6 5 3 2 a Troubleshooting E E TTroubleshooting Sheet Troubleshooting E E T Troubleshooting E E T Troubleshooting E E T Troubleshooting E E T Oscilloscope Module Removal Procedure Oscilloscope Module Removal and Replacement12. Endplate Overlap Bottom Sequence Oscilloscope Module Replacement ProcedureTrigger Cable Removal Procedure Trigger Cable Removal and ReplacementAttenuator Removal Procedure Attenuator Removal and ReplacementTrigger Cable Replacement Procedure Attenuator Replacement Procedure Assistance WarrantyCertification