Agilent Technologies 5962-8200 CV Source Effect, CV Noise Pard, Transient Recovery Time

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2 - Verification and Performance Tests

CV Source Effect

This test measures the change in output voltage that results from a change in ac line voltage from the minimum to maximum value within the line voltage specifications.

a.Turn off the supply and connect the ac power line through a variable voltage transformer.

b.Connect the output as shown in Figure 2-1a with the DVM connected between the +S and the -S terminals. Set the transformer to nominal line voltage.

c.Turn on the supply and program the current to the maximum programmable value (Imax) and the output voltage to the full-scale value in Table 2-2.

d.Adjust the load for the full-scale current value in Table 2-2 as indicated on the front panel display. The CV annunciator on the front panel must be on. If it is not, adjust the load so that the output current drops slightly.

e.Adjust the transformer to the lowest rated line voltage (e.g., 104 Vac for a 115 Vac nominal line voltage input).

f.Record the output voltage reading on the DVM.

g.Adjust the transformer to the highest rated line voltage (e.g., 127 Vac for 115 Vac nominal line voltage input).

h.Record the output voltage reading on the DVM. The difference between the DVM reading is steps (f) and (h) is the source effect voltage and should not exceed the value listed in the performance test record card for the appropriate model under CV Source Effect.

CV Noise (PARD)

Periodic and random deviations (PARD) in the output (ripple and noise) combine to produce a residual ac voltage superimposed on the dc output voltage. CV PARD is specified as the rms or peak-to-peak output voltage in the frequency range specified in the User’s Guide.

a.Turn off the supply and connect the output as shown in Figure 2-1a to an oscilloscope (ac coupled) between the

(+) and the (-) terminals. Set the oscilloscope's bandwidth limit to 20 MHz and use an RF tip on the oscilloscope probe.

b.Turn on the supply and program the current to the maximum programmable value (Imax) and the output voltage to the full-scale value in Table 2-2.

c.Adjust the load for the full-scale current value in Table –2 as indicated on the front panel display.

d.Note that the waveform on the oscilloscope should not exceed the peak-to-peak limits in the performance test record card for the appropriate model under CV Noise (PARD).

e.Disconnect the oscilloscope and connect an ac rms voltmeter in its place. The rms voltage reading should not exceed the RMS limits in the performance test record card for the appropriate model under CV Noise (PARD).

Transient Recovery Time

This test measures the time for the output voltage to recover to within the specified value following a 50% change in the load current.

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Contents Agilent Part No Microfiche No September Warranty Information CertificationSafety Summary Before Applying PowerSafety Symbol Definitions Symbol DescriptionPrinting History Instrument IdentificationTable of Contents Initialization ROM Upgrade Disassembly ProceduresPost-repair Calibration IntroductionPage Safety Considerations OrganizationRelated Documents ChapterRevisions Electrostatic DischargeManual Revisions Firmware RevisionsIntroduction Test Equipment RequiredType Specifications Recommended Model Test SetupMeasurement Techniques Test Setup Electronic LoadOperation Verification Tests Performance TestsCurrent-Monitoring Resistor ProgrammingCV Setup Constant Voltage CV TestsVoltage Programming and Readback Accuracy CV Load EffectCV Source Effect Transient Recovery TimeCV Noise Pard Constant Current CC Tests CC SetupCurrent Programming and Readback Accuracy Current Sink -CC Operation Low Range Current Readback AccuracyCC Load and Line Regulation CC Load EffectCC Source Effect CC Noise PardPerformance Test Equipment Form Load Effect Source Effect Pard Ripple and Noise Transient ResponseConstant Current Tests Current Programming and Readback Current Sink @ -3A Readback MA Range Current ReadbackVout − Load Effect Vout − Vout + 2.0mVSource Effect Vout − Iout −Vout + 4 mV Iout − Iout + 0.2 mAIout − Iout + 2.2 mA Current Sink @ -0.6A Readback Iout −Load Effect Vout − Vout + 5 mV Iout − Iout + 0.1 mAIout − Iout + 1.1 mA Current Sink @ -0.3A Readback Iout −Page Troubleshooting Overall Troubleshooting Flow ChartsTest Equipment Required for Troubleshooting Type Purpose Recommended ModelSheet 1. Troubleshooting Flowchart Sheet 2. Troubleshooting Flowchart Sheet 3. Troubleshooting Flowchart Sheet 4. Troubleshooting Flowchart Specific Troubleshooting Procedures Power-on Self-test FailuresSelf-Test Error Codes/Messages Error Code Description Probable CauseCV/CC Status Annunciators Troubleshooting Bias and Reference SuppliesBias and Reference Voltages Bias Test Point MeasurementJ307 Voltage Measurements Voltage Measurements at J207 A2 Interface to A1 Main boardDisabling Protection Features Manual Fan Speed ControlCalibration Password Inhibit Calibration SwitchPost-repair Calibration ROM Upgrade Upgrade ProcedureInitialization Identifying the FirmwareDisassembly Procedures List of Required ToolsA2 Interface Board, Removal and Replacement Cover, Removal and ReplacementFront Panel Assembly, Removal and Replacement T1 Power Transformer, Removal and Replacement A3 Front Panel Board, Removal and ReplacementA1 Main Control Board Line Voltage Wiring Power Supply Interface signals Interface SignalsConnector Signal Description A3 Front Panel Circuits A2 Interface CircuitsPrimary Interface Secondary InterfacePower Circuits A1 Main Board CircuitsControl Circuits Principles of Operation Page Chassis, Electrical Designator PartNumber Qty DescriptionReplaceable Parts List Mechanical Parts Identification Chassis, Mechanical MP9Diagrams Diagrams A2/A3 Boards Block Diagram Bias CircuitsIndex Index