HP 1GSa/s Digitizing Oscilloscope 16532A manual Attenuator Removal and Replacement

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3.Pull the straight SMB connector on the cable through the hole in the rear panel.

4.Pull the right-angle SMB connector on the cable away from its mating connector on the board.

5.Install a new cable (refer to the next paragraph).

Trigger Cable Replacement Procedure:

1.Install the straight SMB connector on the cable through the hole in the rear panel. See figure 6-13.

2.Attach the washer (H5) and the hex nut (H4) to the straight SMB connector on the cable. Tighten the hex nut.

3.Connect the right-angle SMB connector on the cable to its mating connector on the board.

6-11. Attenuator Removal and Replacement

The effects of ELECTROSTATIC DISCHARGE can damage electronic compo- nents. Use grounded wriststraps and mats when performing any kind of service to this instrument or the cards in it.

Attenuator Removal Procedure:

1.Follow the procedures given in paragraph 6-9 "Oscilloscope Module Removal and Replacement" to remove the HP 16532A Oscilloscope Module to be serviced.

2.Remove the four hex nuts (H3) from the BNC connectors on the rear panel (MP1). See figure 6-13.

3.Remove the two hex nuts (H4) and the two washers (H5) from the SMB connectors on the rear panel.

4.Remove the three end plate screws (H6) holding the rear panel (MP1) and the ground spring (MP2) to the board assembly (A1).

5.Pull the rear panel (MP1) and the ground spring (MP2) from the board assembly (A1). You may need to loosen the attenuator retainer screws (H7) before removing the ground spring.

6.Remove the two attenuator retainer screws (H7) holding the attenuator assembly (A2) to the board assembly (A1).

7.Gently pull the attenuator assembly (A2) straight up from the board assembly (A1) being careful not to damage the connector and the components beneath the attenuator assembly.

8.Install a new attenuator assembly (refer to the next paragraph "Attenuator Replacement Procedure").

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Contents HP 16532A Safety Symbols Safety ConsiderationsContents Service CalibrationSection Replaceable Parts List of Tables Page Table of Contents Page Safety Requirements IntroductionModule Covered by This Manual Operating Characteristics Accessories SuppliedAccessories Available SpecificationsVertical dc Gain Accuracy4 ± 1.5% of full scale HP 16532A SpecificationsRise Time2 1.4 ns Waveform Record Length 8000 pointsHP 16532A Operating Characteristics Vertical at BNCTimebase Trigger Modes TriggeringDigitizer Trigger Level RangeDisplay Modes Waveform DisplayMeasurement Aids Operating Environment Setup AidsEquipment Critical Specifications Recommended Model USE Page Table of Contents Page Preparation for Use Power RequirementsInitial Inspection Safety Requirements Module InstallationProcedure Installation ConsiderationsEndplate Overlap Bottom Sequence Packaging Tagging for ServiceOperating Environment StorageTable 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 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 Calibration Protection Switch Calibration IntervalMaintaining System Integrity Calibration Instrument WarmupLocation of the PROTECT/UNPROTECT Switch Setting the PROTECT/UNPROTECT Switch to UnprotectEquipment Required for Calibration Loading the Default Calibration FactorsCalibrate Delay of the Self Cal menu as follows Self Cal Menu CalibrationsCalibrate Vert Cal of the Self Cal menu as follows 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 Exchange Assemblies Replaceable Parts ListAbbreviations Ordering InformationDirect Mail Order System Reference Designator and Abbreviations Parts Identification Mfr Code Mfr Part Number Reference DesignatorHP Part Qty Number DescriptionPage Table of Contents Page Attenuator Theory of Operation Introduction Safety RequirementsModule Block Diagram and The- ory of Operation Main Assembly 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 Test Self-Test DescriptionsData Memory Test Timebase TestTroubleshooting Aids TroubleshootingVerifying 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 Procedure Oscilloscope Module Removal and Replacement12. Endplate Overlap Bottom Sequence Oscilloscope Module Replacement ProcedureTrigger Cable Removal Procedure Trigger Cable Removal and ReplacementAttenuator Removal and Replacement Trigger Cable Replacement ProcedureAttenuator Removal Procedure Attenuator Replacement Procedure Warranty CertificationAssistance