Agilent Technologies 6633B, 6634B, 66332A, 6632B service manual CC Load Effect, CC Source Effect

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2 - Verification and Performance Tests

c.Set up voltmeter to take measurements in the statistical mode as follows: Press Shift key, f0, Shift key, N

Press ^ (up arrow) until MATH function is selected, then press >. Press ^ (up arrow until STAT function is selected then press (ENTER).

d.Set up voltmeter to read the average of the measurements as follows: Press Shift key, f1, Shift key, N.

Press down arrow until RMATH function is selected, then press >. Press ^ (up arrow) until MEAN function is selected, then press ENTER.

e.Execute the program by pressing f0, ENTER, TRIG, ENTER

f.Wait for 100 readings and then read the average measurement by pressing f1, ENTER. To repeat the measurement, perform steps (e) and (f).

CC Load Effect

This test measures the change in output current for a change in load from full scale output voltage to short circuit.

a.Turn off the supply and connect the output as shown in Figure 2-1a with the DVM connected across the current monitoring resistor.

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

c.Adjust the load in the CV mode for full scale voltage as indicated on the front panel display. Check that the CC annunciator of the UUT is on. If it is not, adjust the load so that the output voltage drops slightly.

d.Record the output current reading (DVM reading/current monitor resistance value in ohms). You may want to use the average reading program described under “CC Load and Line Regulation”.

e.Short the load switch and record the output current reading. The difference in the current readings in steps (d) and (e) is the load effect and should not exceed the limit specified in the performance test record chart for the appropriate model under CC LOAD EFFECT.

CC Source Effect

This test measures the change in output current that results when the AC line voltage changes from the minimum to the maximum value within the specifications.

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

b.Connect the output terminals as shown in Figure 2-1a with the DVM connected across the current monitoring resistor. Set the transformer to the nominal line voltage.

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

d.Adjust the load in the CV mode for full scale voltage as indicated on the front panel display. Check that the CC annunciator of the UUT is on. If it is not, adjust the load so that the output voltage drops slightly.

e.Adjust the transformer to the lowest rated line voltage.

f.Record the output current reading (DVM reading/current monitoring resistor in ohms). You may want to use the average reading program described under “CC Load and Line Regulation”.

g.Adjust the transformer to the highest rated line voltage.

h.Record the output current reading again. The difference in the current readings in steps (f) and (h) is the CC source effect and should not exceed the values listed in the performance test record card under CC SOURCE EFFECT.

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Contents Agilent Part No Microfiche No October Warranty Information CertificationSafety Summary Before Applying PowerSafety Symbol Definitions Symbol DescriptionPrinting History Instrument IdentificationItem Description Table of Contents Introduction General Schematic Notes Backdating Initialization ROM UpgradeDisassembly Procedures Post-repair CalibrationPage Related Documents Safety ConsiderationsOrganization ChapterManual Revisions RevisionsElectrostatic Discharge Firmware RevisionsTest Equipment Required Type Specifications Recommended ModelIntroduction Built-in Self TestsTest Setup Measurement TechniquesElectronic Load Operation Verification TestsPerformance Tests Current-Monitoring ResistorVoltage Programming and Readback Accuracy CV SetupConstant Voltage CV Tests CV Load EffectCV Source Effect CV Noise PardConstant Current CC Tests Transient Recovery TimeCC Setup Current Programming and Readback AccuracyCurrent Sink -CC Operation Low Range Current Readback AccuracyCC Load and Line Regulation CC Load Effect CC Source EffectPerformance Test Equipment Form CC Noise PardPerformance Test Record Forms − 4 mV + 4 mV Vout − 42 mV Model Agilent 6634B Report No Date Test Description MinimumVout − 12 mV Iout + 0.29 mATroubleshooting Test Equipment Required for Troubleshooting Overall TroubleshootingFlow Charts 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 Self-Test Error Codes/Messages Specific Troubleshooting ProceduresPower-on Self-test Failures Error Code Description Probable CauseBias and Reference Voltages CV/CC Status Annunciators TroubleshootingBias and Rail Voltages Bias Test Point Common MeasurementJ307 Voltage Measurements Voltage Measurements at J307 A2 Interface to A1 Main boardDisabling Protection Features Manual Fan Speed ControlInhibit Calibration Switch Calibration PasswordPost-repair Calibration Initialization ROM UpgradeUpgrade Procedure Identifying the FirmwareDisassembly Procedures Remote sense leads before attempting disassemblyList of Required Tools Cover, Removal and Replacement A2 Interface Board, Removal and ReplacementFront Panel Assembly, Removal and Replacement T1 Power Transformer, Removal and Replacement S1 Line Switch, Removal and ReplacementA3 Front Panel Board, Removal and Replacement A1 Main Control BoardLine Voltage Wiring Transformer WiringInterface Signals Power Supply Interface signalsConnector Signal Description Primary Interface A3 Front Panel CircuitsA2 Interface Circuits 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 Binding Post Option #020 A5 AC input/RFI BoardRelay 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 Manual Updates
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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.

The Agilent 6632B is a single-output DC power supply that delivers up to 30V and 3A. It is known for its excellent load regulation and low noise, making it ideal for sensitive electronic testing. The model includes built-in voltage and current measurement capabilities, allowing users to monitor output conditions in real time. The 6632B is commonly used in laboratory environments, educational institutions, and manufacturing lines.

Moving to the 6634B, this model offers dual-output capabilities with a maximum output of 30V and 6A. This versatility enables simultaneous powering of two different devices or circuit sections. It also features parallel and series operation options, allowing users to create a custom power supply configuration for specific applications. With a programmable interface, the 6634B simplifies test automation, ensuring efficiency in extensive testing scenarios.

The Agilent 66332A stands out with its precision and high performance. This power supply provides three outputs—two programmable and one fixed—yielding flexible power configurations. Its intuitive user interface allows easy adjustment of voltage and current settings. The device is equipped with extensive protection features to safeguard both the power supply and the connected load against faults. It is an excellent choice for complex testing setups that require reliable power.

The 6633B model offers a high-performance power supply with dual outputs, similar to the 6634B but with enhanced specifications. It can provide up to 40V and 2A per channel, delivering precision for demanding applications. This model is particularly suited for industries focused on high-reliability applications, such as telecommunications and aerospace.

Lastly, the Agilent 6612C is a compact and lightweight power supply providing single-output up to 60V and 2A. This model is designed for simplicity and ease of use, making it an excellent choice for portable applications. The 6612C’s unique characteristics include a compact design and user-friendly controls, which facilitate operation in field settings.

In summary, Agilent Technologies’ power supply models—6632B, 6634B, 66332A, 6633B, and 6612C—offer an array of features that cater to a wide range of testing and research needs, ensuring reliable power delivery in various contexts.
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