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

Page 88

HP 16532A - Service

Attenuator Replacement Procedure:

a.Gently push the attenuator assembly (A2) straight down on the board assembly (A1) being careful not to damage the connector and the components beneath the attenuator assembly. See figure 6-13.

b.Attach the attenuator assembly (A2) to the board assembly (A1) with the two attenuator retainer screws (H7).

c.Assemble the rear panel (MP1) and the ground spring (MP2) to the board assembly (A1) and attach them with the three end plate screws (H6). You may need to loosen the attenuator retainer screws (H7) before assembling the ground spring to the board assembly, then tighten the attenuator screws (H7) when the assembly is finished.

d.Attach the SMB connectors to the rear panel (MP1) with two hex nuts (H4) and two washers (H5).

e.Attach the BNC connectors to the rear panel (MP1) with four hex nuts (H3).

Note

Tighten the hex nuts down so that they will not interfere with the installation of the board above the oscilloscope module. One of the flat surfaces on the outside edge of the nut should be parallel with the top edge of the rear panel.

6-22

Image 88

Contents HP 16532A Safety Considerations Safety SymbolsContents Calibration ServiceSection Replaceable Parts List of Tables Page Table of Contents Page Introduction Safety RequirementsModule Covered by This Manual Accessories Supplied Accessories AvailableSpecifications Operating CharacteristicsHP 16532A Specifications Rise Time2 1.4 nsWaveform Record Length 8000 points Vertical dc Gain Accuracy4 ± 1.5% of full scaleVertical at BNC HP 16532A Operating CharacteristicsTimebase Triggering DigitizerTrigger Level Range Trigger ModesWaveform Display Display ModesMeasurement Aids Setup Aids Operating EnvironmentEquipment Critical Specifications Recommended Model USE Page Table of Contents Page Power Requirements Initial Inspection Safety RequirementsModule Installation Preparation for UseInstallation Considerations ProcedureEndplate Overlap Bottom Sequence Tagging for Service Operating EnvironmentStorage PackagingTable of Contents Page Test Record Performance Test ProceduresPerformance Test Interval DC CAL Output Test AC CAL Output Test Equipment Required Critical Specification Model/Part Number SpecificationInput 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 Interval Calibration Protection SwitchMaintaining System Integrity Instrument Warmup CalibrationSetting the PROTECT/UNPROTECT Switch to Unprotect Location of the PROTECT/UNPROTECT SwitchLoading the Default Calibration Factors Equipment Required for CalibrationSelf Cal Menu Calibrations Calibrate Delay of the Self Cal menu as followsCalibrate 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 Replaceable Parts List AbbreviationsOrdering Information Exchange AssembliesDirect Mail Order System Reference Designator and Abbreviations Parts Identification Reference Designator HP Part Qty NumberDescription Mfr Code Mfr Part NumberPage Table of Contents Page Introduction Safety Requirements Module Block Diagram and The- ory of OperationMain Assembly Theory 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 Self-Test Descriptions Data Memory TestTimebase Test TestTroubleshooting Troubleshooting AidsVerifying the System Clock Page Troubleshooting Sheet Troubleshooting E E T1 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 Procedure Oscilloscope Module Replacement Procedure 12. Endplate Overlap Bottom SequenceTrigger Cable Removal and Replacement Trigger Cable Removal ProcedureTrigger Cable Replacement Procedure Attenuator Removal and ReplacementAttenuator Removal Procedure Attenuator Replacement Procedure Certification WarrantyAssistance