Agilent Technologies 6634B, 66332A Constant Current CC Tests, Transient Recovery Time, CC Setup

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2 - Verification and Performance Tests

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.

tttt

Loading Transient

vt

t

v

Unloading

Transient

Figure 2-2. Transient Waveform

a.Turn off the supply and connect the output as in Figure 2-1a with the oscilloscope across the +S and the -S terminals.

b.Turn on the supply and program the output voltage to the full-scale value and the current to the maximum programmable value.

c.Set the load to the Constant Current mode and program the load current to 1/2 the power supply full-scale rated current.

d.Set the electronic load's transient generator frequency to 100 Hz and its duty cycle to 50%.

e.Program the load's transient current level to the supply's full-scale current value and turn the transient generator on.

f.Adjust the oscilloscope for a waveform similar to that in Figure 2-2.

g.The output voltage should return to within the specified voltage (v) in less than the specified time (t). Check both loading and unloading transients by triggering on the positive and negative slope.

Constant Current (CC) Tests

CC Setup

Follow the general setup instructions in the Measurement Techniques paragraph and the specific instructions given in the following paragraphs.

Current Programming and Readback Accuracy

This test verifies that the current programming and readback are within specification.

a.Turn off the supply and connect the current monitoring resistor across the power supply output and the DVM across the resistor. See "Current Monitoring Resistor" for connection information.

b.Turn on the supply and program the output voltage to 5 V and the current to zero.

c.Divide the voltage drop (DVM reading) across the current monitoring resistor by its resistance to convert to amps and record this value (Iout). Also, record the current reading on the front panel display. The readings should be within the limits specified in the performance test record card for the appropriate model under CC PROGRAMMING @ 0 AMPS.

d.Program the output current to full-scale .

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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 ProceduresIntroduction General Schematic Notes Backdating Post-repair CalibrationPage Safety Considerations OrganizationRelated Documents ChapterRevisions Electrostatic DischargeManual Revisions Firmware RevisionsIntroduction Test Equipment RequiredTest Setup Measurement TechniquesOperation Verification Tests Performance TestsElectronic Load Current-Monitoring ResistorCV Setup Constant Voltage CV TestsVoltage Programming and Readback Accuracy CV Load EffectCV Source Effect CV Noise PardTransient Recovery Time CC SetupConstant Current CC Tests Current Programming and Readback AccuracyLow Range Current Readback Accuracy Current Sink -CC OperationCC Load and Line Regulation CC Load Effect CC Source EffectPerformance Test Equipment Form CC Noise PardPerformance Test Record Forms Iout + 0.25 mA Iout Iout + 4.3 mAIout Iout + 2.3 mA Troubleshooting Overall Troubleshooting Flow ChartsTest Equipment Required for Troubleshooting Type Purpose Recommended ModelSheet 1. Main Flowchart Sheet 2. Main Flowchart Sheet 3. Main Flowchart Sheet 4. OV at Turn-On Sheet 5. OV at Turn-On Sheet 6. FS Indicated but Fuse OK Sheet 7. No Output Voltage Sheet 8. No Output Voltage Sheet 9 No Output Voltage Sheet 10. No Current Limit Sheet 11. Unit Does Not OV Sheet 12. High Output Voltage Specific Troubleshooting Procedures Power-on Self-test FailuresSelf-Test Error Codes/Messages Error Code Description Probable CauseCV/CC Status Annunciators Troubleshooting Bias and Rail VoltagesBias and Reference Voltages Bias Test Point Common MeasurementJ307 Voltage Measurements Voltage Measurements at J307 A2 Interface to A1 Main boardDisabling Protection Features Manual Fan Speed ControlCalibration Password Inhibit Calibration SwitchPost-repair Calibration ROM Upgrade Upgrade ProcedureInitialization Identifying the FirmwareRemote sense leads before attempting disassembly Disassembly ProceduresList of Required Tools A2 Interface Board, Removal and Replacement Cover, Removal and ReplacementFront Panel Assembly, Removal and Replacement S1 Line Switch, Removal and Replacement A3 Front Panel Board, Removal and ReplacementT1 Power Transformer, Removal and Replacement A1 Main Control BoardLine Voltage Wiring Transformer WiringPower Supply Interface signals Interface SignalsConnector Signal Description A3 Front Panel Circuits A2 Interface CircuitsPrimary Interface Secondary InterfaceA2/A3 Block Diagram Power Circuits A1 Main Board CircuitsA1 Block Diagram Control Circuits Principles of Operation Page Chassis, Electrical Designator Model PartNumber Qty DescriptionChassis, Mechanical Designator Model Part Number Qty DescriptionMechanical Parts ldentification A1 Control Board PC Board Assembly Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts Replaceable Parts A5 AC input/RFI Board Binding Post Option #020Relay Option #760 General Schematic Notes Model-dependent ComponentsDiagrams A1 Board Component Locations R434 825 R500 175 325 R435 R505 A1 Board Component Locations A4 and A6 Board Component Locations A1 Board schematic sheet A1 Board schematic sheet A1 Board schematic sheet A6 Relay Option Board schematic Index Index
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6632B, 6633B, 66332A, 6634B specifications

Agilent Technologies, a leader in electronic test and measurement solutions, offers a range of power supplies designed to meet various application needs. Notable models include the 6632B, 6634B, 66332A, 6633B, and 6612C. Each of these units provides unique features and technologies that cater to researchers, engineers, and technicians in the industry.

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