Constant Current CC Verifications | Agilent Technologies E3632A

Chapter 3 Calibration Procedures

Constant Current (CC) Verifications

Constant Current (CC) Verifications

Constant Current Test Setup

Follow the general setup instructions in the "Measurement Techniques" section, starting on page 47 and the specific instructions will be given in the following paragraphs.

Current Programming and Readback Accuracy

This test verifies that the current programming and GPIB or RS-232 readback functions are within specifications. Note that the readback values over the remote interface should be identical to those displayed on the front panel. The accuracy of the current monitoring resistor must be 0.01% or better.

You should program the power supply over the remote interface for this test to avoid round off errors.

1Turn off the power supply and connect a 0.01W current monitoring resistor (RM) across the output to be tested and a digital voltmeter across the current monitoring resistor (RM).

2Turn on the power supply. Select the 15V/7A range and enable the output by sending the commands:

VOLT:RANG P15V

OUTP ON

3Program the output voltage to full rated voltage (15.0V) and output current to zero amp by sending the commands:

VOLT 15

CURR 0

4Divide 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 limits of(0A ± 10mA). Also, note that the CC, Adrs, Limit, and Rmt annunciators are on.

5Readback the output current over the remote interface by sending the command:

MEAS:CURR?

6Record the value displayed on the controller. This value should be within the limit of (IO ± 5mA).

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Agilent Technologies E3632A manual Constant Current CC Verifications, Constant Current Test Setup

Contents

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