HP 1GSa/s Digitizing Oscilloscope 16532A manual V1MHz

Page 38

HP 16532A - Performance Tests

4.Set the signal generator for 1MHz at 2.4 dBm. On the oscilloscope, select RUN - REPETITIVE. The signal on the screen should be two cycles at three divisions amplitude.

5.After the measurement settles (averaging complete, about 15 seconds), select STOP. In the

Auto-Measure menu note the Vp-preading. V1MHz = __________ mV.

6.Set the power meter Cal Factor % to the 1MHz value from the calibration chart on the power splitter. Then press dB[REF] to set a 0 dB reference.

7.Change the signal generator to 250 MHz. Set power meter Cal Factor % to the 250 MHz value from the chart.

8.Adjust the signal generator amplitude for a power reading as close as possible to 0.0 dB[REL]. Reading = __________ dB.

9.Set the oscilloscope s/Div for 2 ns/Div and select RUN-REPETITIVE.

10.After the measurement settles (averaging complete), select STOP. In the Auto-Measure menu note the Vp-preading. V250MHz = ________mV.

11.Calculate the response using the formula:

response (dB) = 20 log10V250Mhz = 20log10 (_____) = ______dB

V1MHz

12.Correct the result from step 11 with any differences in the power meter from step 8. Observe signs. For example:

Result from step 11 = 2.3 dB Power meter reading = 0.2 dB[REL]

then true response = (2.3) (0.2) 2.1dB

(__________) (__________) = ____________ dB

13.The result from step 12 should be ≤ − 3.0 dB. Record the result in the Performance Test Record.

14.In the Channel menu select channel 2. In the Waveform Selection menu delete channel 1 and insert channel 2.

15.Repeat steps 2 through 14 for channel 2, replacing channel 1 with channel 2 where applicable.

Note

Failure of the bandwidth test can be caused by a faulty attenuator or main assembly.

3-12

Image 38
Contents HP 16532A Safety Considerations Safety SymbolsContents Section Replaceable Parts ServiceCalibration List of Tables Page Table of Contents Page Module Covered by This Manual Safety RequirementsIntroduction 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 scaleTimebase HP 16532A Operating CharacteristicsVertical at BNC 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 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 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 Maintaining System Integrity Calibration Protection SwitchCalibration Interval Instrument Warmup CalibrationSetting the PROTECT/UNPROTECT Switch to Unprotect Location of the PROTECT/UNPROTECT SwitchLoading the Default Calibration Factors Equipment Required for CalibrationCalibrate Vert Cal of the Self Cal menu as follows Calibrate Delay of the Self Cal menu as followsSelf Cal Menu Calibrations 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 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 and Replacement Oscilloscope Module Removal ProcedureOscilloscope Module Replacement Procedure 12. Endplate Overlap Bottom SequenceTrigger Cable Removal and Replacement Trigger Cable Removal ProcedureAttenuator Removal Procedure Attenuator Removal and ReplacementTrigger Cable Replacement Procedure Attenuator Replacement Procedure Assistance WarrantyCertification