HP 1GSa/s Digitizing Oscilloscope 16532A manual Input Resistance, Specification

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HP 16532A - Performance Tests

3-8. INPUT RESISTANCE

This test verifies the input resistance of the oscilloscope module. A four-wire measurement is used for ac- curacy at 50 Ω.

Specification:

1 M Ω ± 1% and 50 Ω ± 1%

Equipment Required:

The following equipment is required for the test. Procedures are based on the model or part numbers rec- ommended.

			Recommended
Equipment Required		Critical Specification	Model/Part Number

Digital Multimeter	Measure resistance (4-wire) better than 0.25%		HP 3458A
	accuracy
Cables (2)	50	Ω BNC (m to m) 48-inch	HP 10503A
Adapter	50	Ω BNC Tee (m)(f)(f)	HP 1250-0781
Adapters (2)	50	Ω BNC (f) to Dual Banana Plug	HP 1251-2277

Procedure:

1.Set up the multimeter to make a 4-wire resistance measurement.

2.Use the BNC-to-banana adapters to connect one end of each BNC cable to the 4-wire resistance connections on the multimeter, and connect the free ends of the cables to the BNC Tee.

3.Connect the male end of the BNC tee to the channel 1 input of the oscilloscope module. Set up the oscilloscope module according to the following parameters in the order given:

	Menu		Selection		Setting

Channel		Input		1
		Probe		1:1
		V/Div		20 mV
		Offset		0 V
		Coupling		50	Ω / DC
Trigger		Mode		Immediate

3-4

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Contents HP 16532A Safety Considerations Safety SymbolsContents Service CalibrationSection Replaceable Parts List of Tables Page Table of Contents Page Safety Requirements IntroductionModule Covered by This Manual Specifications Accessories SuppliedAccessories Available Operating CharacteristicsWaveform Record Length 8000 points HP 16532A SpecificationsRise Time2 1.4 ns Vertical dc Gain Accuracy4 ± 1.5% of full scaleHP 16532A Operating Characteristics Vertical at BNCTimebase Trigger Level Range TriggeringDigitizer Trigger ModesWaveform Display Display ModesMeasurement Aids Setup Aids Operating EnvironmentEquipment Critical Specifications Recommended Model USE Page Table of Contents Page Module Installation Power RequirementsInitial Inspection Safety Requirements Preparation for UseInstallation Considerations ProcedureEndplate Overlap Bottom Sequence Storage Tagging for ServiceOperating Environment PackagingTable of Contents Page Performance Test Procedures Test RecordPerformance Test Interval DC CAL Output Test AC CAL Output Test Specification Equipment Required Critical Specification Model/Part NumberInput Resistance Page Voltage Measurement Accuracy Voltage Measurement Accuracy Test Div Offset Supply Upper Limit Lower Limit Procedure Zero-Input Offset Offset AccuracyDC Input Offset Div Offset Supply Min MaxBandwidth 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 Calibration Protection Switch Calibration IntervalMaintaining System Integrity Instrument Warmup CalibrationSetting the PROTECT/UNPROTECT Switch to Unprotect Location of the PROTECT/UNPROTECT SwitchLoading the Default Calibration Factors Equipment Required for CalibrationCalibrate Delay of the Self Cal menu as follows Self Cal Menu CalibrationsCalibrate Vert Cal of the Self Cal menu as follows Calibrate the Time Null of the Self Cal menu as follows Calibrate the Logic Trigger of the Self Cal menu as followsCalibrate the Ext Trig Null of the Self Cal menu as follows Ext Trig Null Calibration ConnectionsSetting the PROTECT/UNPROTECT Switch to Protect Sealing the MainframeTable of Contents Page Ordering Information Replaceable Parts ListAbbreviations Exchange AssembliesDirect Mail Order System Reference Designator and Abbreviations Parts Identification Description Reference DesignatorHP Part Qty Number Mfr Code Mfr Part NumberPage Table of Contents Page Main Assembly Theory of Operation Introduction Safety RequirementsModule Block Diagram and The- ory of Operation Attenuator Theory of OperationHP 16532A Oscilloscope Block Diagram Page Self-Test Access Procedure Self-TestsLoad Test System Screen Functional Tests Screen Touch the Functional Tests fieldA/D Test Run Screen Exit Test System Screen Timebase Test Self-Test DescriptionsData Memory Test TestTroubleshooting Troubleshooting AidsVerifying the System Clock Page Troubleshooting E E T Troubleshooting Sheet1 6 5 3 2 a Troubleshooting E E T Troubleshooting E E T Troubleshooting E E T Troubleshooting E E T Oscilloscope Module Removal and Replacement Oscilloscope Module Removal ProcedureOscilloscope Module Replacement Procedure 12. Endplate Overlap Bottom SequenceTrigger Cable Removal and Replacement Trigger Cable Removal ProcedureAttenuator Removal and Replacement Trigger Cable Replacement ProcedureAttenuator Removal Procedure Attenuator Replacement Procedure Warranty CertificationAssistance