CC Load Regulation, Curr | Agilent Technologies E3632A manual

Chapter 3 Calibration Procedures

Constant Current (CC) Verifications

7Program the output current to the full rated value (7.0A) by sending the commands:

CURR 7.0

8Divide the voltage drop (DVM reading) across the current monitoring resistor

(RM) by its resistance to convert to amps and record this value (IO). This value should be within the limit of (7A ± 24mA).

9Readback the output current over the remote interface by sending the command:

MEAS:CURR?

10Record the value displayed on the controller. This value should be within the limit (IO ± 15.5mA).

CC Load Regulation

This test measures the change in output current resulting from a change in the load from full-rated output voltage to short circuit.

1Turn off the power supply and connect the output to tested as shown in Figure 3-1with the digital voltmeter connected across the 0.01W current monitoring resistor (RM).

2Turn on the power supply. Select the 15V/7A range, enable the output, and set the display to the limit mode. When the display is in the limit mode, program the output voltage to the full rated value (15.0V) and the output current to the full rated value (7.0A).

3Operate the electronic load in constant voltage mode and set its voltage to 15.0V. Check that the CC annunciator is on. If it is not, adjust the load so that the output voltage drops slightly. Record the current reading by dividing the voltage reading on the digital voltmeter by the resistance of the current monitoring resistor.

4Operate the electronic load in short (input short) mode. Record the current reading again by dividing the voltage reading on the digital voltmeter by the resistance of the current monitoring resistor. The difference between the current readings in step (3) and (4) is the load regulation current. The difference of the readings should be within the limit of 0.95mA.

54

Image 55

Agilent Technologies E3632A manual CC Load Regulation, Curr

Contents

3DUW1XPEHU $SULO Service Guide Flexible system features Convenient bench-top features Front Panel at a Glance Before performing calibration T e Front-Panel Voltage and Current Limit Settings OVP Display Annunciators Key to Rear Panel at a Glance This Book Page Contents Theory of Operation Contents Service Contents Specifications Specifications Specifications Performance Specifications Performance Specifications OVP Specifications Supplemental Characteristics Supplemental Characteristics Opt 0E3 Dimensions of Agilent E3632A Power Supply Specifications Supplemental Characteristics Quick Start Quick Start Enable the outputs To Prepare the Power Supply for UseQuick Start To Prepare the Power Supply for Use Connect the power cord and turn on the power supply 100 or 115 Vac, 4 AT fuse 230 Vac, 2.5 AT fuse Quick Start To Check the Rated Voltages of the Power Supply To Check the Rated Voltages of the Power SupplyTurn on the power supply Quick Start To Check the Rated Currents of the Power Supply To Check the Rated Currents of the Power SupplyAdjust the voltage limit value to 1.0 volt Page Connect a load to the desired output terminals To Use the Power Supply in Constant Voltage ModeSet the display for the limit mode Adjust the knob for the desired current limit Return to the meter mode T e Adjust the knob for the desired output voltage Adjust the knob for the desired voltage limit To Use the Power Supply in Constant Current ModeConnect a load to the output terminals Verify that the power supply is in the constant current mode T e Adjust the knob for the desired output current To Store and Recall the Instrument State Recall Turn on the recall modeRestore the operating state Done To Program Overvoltage Protection Setting the OVP Level and Enable the OVP Circuit Clearing the Overvoltage Condition Readjust the OVP trip level or the output voltage levelMove to the clear mode Ovp on Checking OVP Operation Clear the overvoltage condition and exist this menu To Program Overcurrent Protection Setting the OCP Level and Enable the OCP Circuit Clearing the Overcurrent Condition Readjust the OCP trip level or the output current levelMove to the clear mode Ocp on Checking OCP Operation Quick Start To Rack Mount the Power Supply To Rack Mount the Power Supply Calibration Procedures Calibration Procedures Calibration Interval Agilent Technologies Calibration Services Calibration Procedures Automating Calibration Procedures Automating Calibration ProceduresRecommended Test Equipment Test Considerations U t i o n Calibration Procedures Test Considerations Performance Verification Tests Calibration Procedures Performance Verification TestsPerformance Verification Tests Self-Test Measurement Techniques Setup for Most Tests General Measurement Techniques Voltage Programming and Readback Accuracy Constant Voltage Test SetupCalibration Procedures Constant Voltage CV Verifications Constant Voltage CV Verifications CV Line Regulation CV Load RegulationVolt Normal Mode Voltage Noise CV Ripple and Noise Load Transient Response Time Current Programming and Readback Accuracy Constant Current Test SetupCalibration Procedures Constant Current CC Verifications Constant Current CC Verifications Curr CC Load Regulation CC Line Regulation Normal Mode Current Noise CC Ripple and Noise Calibration Procedures Common Mode Current Noise Common Mode Current Noise CV Performance Test Record Performance Test Record for Agilent E3632ACC Performance Test Record Calibration Security Code Calibration Procedures Calibration Security Code Turn on the front-panel calibration mode To Unsecure the Power Supply for CalibrationMove to the security code by pressing the Secure key Turn off the calibration mode To Unsecure the Power Supply Without the Security Code Calibration Count Calibration Procedures Calibration CountCalibration Message General Calibration/Adjustment Procedure Voltage and OVP Calibration Move down a level to the voltage calibration modeCalibrate DAC and select the low voltage calibration point Lo +0.5000 Current and OCP Calibration Hi 28.995 Select the low current calibration point Lo 0.200 a Mi 3.499 a Aborting a Calibration in Progress Turn off the power supply to exit the calibration mode Calibration Record for Agilent E3632A Calibration Procedures Calibration Record for Agilent E3632A Self-Test Error Messages Error MessagesCalibration Procedures Error Messages System Error MessagesPage Calibration Program Calibration Procedures Calibration Program Clear Screen Print TABXY10,7,BEGIN DAC Error Correction Else Print TABXY10,7,BEGIN CURRENT/OCP Calibration Print TABXY10,5,CURRENT/OCP Calibration Complete End of Program Theory of Operation Theory of Operation Theory of Operation Block Diagram Overview Block Diagram Overview Block Diagram Theory of Operation AC Input and Bias Supplies AC Input and Bias Supplies Theory of Operation Floating Logic Floating Logic Serck Xfpsk Theory of Operation To-A Converter To-A Converter Theory of Operation To-D Converter To-D Converter Theory of Operation Power Mesh and Control Power Mesh and Control Theory of Operation Power Mesh and Control Front Panel Earth-Referenced LogicTheory of Operation Earth-Referenced Logic Service Service Service Operating Checklist Operating ChecklistIs the Power Supply Inoperative? Does the Power Supply Fail Self-Test? Express Exchange U.S.A. only Types of Service AvailableStandard Repair Service worldwide Service Types of Service Available Repacking for Shipment Service Repacking for Shipment Surface Mount Repair Electrostatic Discharge ESD PrecautionsTo Replace the Power-Line Fuse Service Electrostatic Discharge ESD Precautions Installation Procedure To Disconnect the Output Using an External RelayService To Disconnect the Output Using an External Relay Unit is Inoperative Troubleshooting HintsUnit Reports Errors 740 to U t i o n Service Troubleshooting Hints Service Troubleshooting Hints Bias Supplies Problems Complete Self-Test Self-Test ProceduresPower-On Self-Test Service Self-Test Procedures ±10% tolerance Service Self-Test Procedures 100 Replaceable Parts To Order Replaceable Parts KMG1H222H E3632-60002 Main PC Assembly Replaceable Parts E3632-60002 Main PC Assembly 105 106 107 108 109 110 Agilent Part Qty Description Mfr Mfr Part Number Code E3632-60004 Front Panel Display PC Assembly E3632A Power SupplyAssembly E3632-60005 Front Frame Assembly Mfr Code Manufacturer’s Name Manufacturer’s List 114 Backdating Lqfoxghglqwklvfkdswhu Schematics ‡ $&DQG$&6\VWHP6FKHPDWLFSDJH ‡ &RPSRQHQW/RFDWRU0DLQ%RDUGSDJH‡ &RPSRQHQW/RFDWRUURQWSDQHOSDJH Page Page Page Page Page Page Page Page Warranty