Agilent E3632A - Manuals

5 Display Annunciators Adrs Power supply is addressed to listen or talk over a remote interface. Rmt Power supply is in remote interface mode. 15V Shows the 15V/7A range is selected. 30V Shows the 30V/4A range is selected. OVP The overvoltage protection function is enabled when the annunciator turns...

6 The Rear Panel at a Glance Use the front-panel key to: • Select the GPIB or RS-232 interface (see chapter 3). • Set the GPIB bus address (see chapter 3). • Set the RS-232 baud rate and parity (see chapter 3). 1 Power-line voltage setting 2 Power-line fuse-holder assembly3 AC inlet 4 Power-line mod...

7 In This Book Specifications Chapter 1 lists the power supply’s specifications and describes how to interpret these specifications. Quick Start Chapter 2 prepares the power supply for use and helps you get familiar with the front-panel features. Calibration Procedures Chapter 3 provides performance...

9 Contents Contents Chapter 1 Specifications Performance Specifications 15Supplemental Characteristics 17 Chapter 2 Quick Start To Prepare the Power Supply for Use 23To Check the Rated Voltages of the Power Supply 25To Check the Rated Currents of the Power Supply 26To Use the Power Supply in Constan...

10 Co nte nt s Contents Chapter 3 Calibration Procedures (continued) Constant Voltage (CV) Verifications 49 Constant Voltage Test Setup 49Voltage Programming and Readback Accuracy 49CV Load Regulation 50CV Line Regulation 50Normal Mode Voltage Noise (CV Ripple and Noise) 51Load Transient Response Ti...

11 Contents Contents Chapter 5 Service Operating Checklist 91Types of Service Available 92Repacking for Shipment 93Electrostatic Discharge (ESD) Precautions 94Surface Mount Repair 94To Replace the Power-Line Fuse 94To Disconnect the Output Using an External Relay 95Troubleshooting Hints 96Self-Test ...

14 Specifications The performance specifications are listed in the following pages. Specifications are warranted in the temperature range of 0 to 40°C with a resistive load. Supplemental characteristics, which are not warranted but are descriptions of performance determined either by design or testi...

Chapter 1 Specifications Performance Specifications 15 1 Performance Specifications Output Ratings (@ 0 ° C - 40 ° C) Low range 0 to +15 V/0 to 7 A High range 0 to +30 V/0 to 4 A Programming Accuracy [1] 12 months (@ 25 ° C ± 5 ° C), ±(% of output + offset) Voltage 0.05% + 10 mV Current 0.2% + 10 mA...

Chapter 1 Specifications Supplemental Characteristics 17 1 Supplemental Characteristics Output Programming Range (maximum programmable values) Low range 0 to 15.45 V/0 to 7.21 A High range 0 to 30.9 V/0 to 4.12 A OVP 1 V to 32 V OCP 0 A 7.5 A Remote Sensing Capability Voltage drop Up to 1 V per each...

22 Quick Start One of the first things you will want to do with your power supply is to become acquainted with its front panel. Written procedures in this chapter prepare the power supply for use and familiarize you with most front-panel operations. • The power supply is shipped from the factory con...

Chapter 2 Quick Start To Prepare the Power Supply for Use 23 2 To Prepare the Power Supply for Use The following steps help you verify that the power supply is ready for use. 1 Check the list of supplied items. Verify that you have received the following items with your power supply. If anything is ...

Chapter 2 Quick Start To Prepare the Power Supply for Use 24 1 Remove the power cord. Remove the fuse-holder assembly with a flat-blade screwdriver from the rear 2 Install the corect line fuse . Remove the power-line voltage selector from the power-line module. 3 Rotate the power-line voltage select...

Chapter 2 Quick Start To Check the Rated Voltages of the Power Supply 25 2 To Check the Rated Voltages of the Power Supply The following procedures check to ensure that the power supply develops its rated voltage outputs with no load and properly responds to operation from the front panel. For each ...

Chapter 2 Quick Start To Check the Rated Currents of the Power Supply 26 To Check the Rated Currents of the Power Supply The following procedures check to ensure that the power supply develops its rated current outputs with a short and properly responds to operation from the front panel. For each st...

Chapter 2 Quick Start To Use the Power Supply in Constant Voltage Mode 28 To Use the Power Supply in Constant Voltage Mode To set up the power supply for constant voltage (CV) operation, proceed as follows. For each step, use the keys shown on the left margin. 1 Connect a load to the desired output ...

Chapter 2 Quick Start To Use the Power Supply in Constant Current Mode 30 To Use the Power Supply in Constant Current Mode To set up the power supply for constant current (CC) operation, proceed as follows. For each step, use the keys shown on the left margin. 1 Connect a load to the output terminal...

Chapter 2 Quick Start To Store and Recall the Instrument State 32 To Store and Recall the Instrument State You can store up to three different operating states in non-volatile memory. This also enables you to recall the entire instrument with just a few key presses from the front panel. The memory l...

Chapter 2 Quick Start To Program Overvoltage Protection 34 To Program Overvoltage Protection Overvoltage protection guards the load against output voltages that reach a specified value greater than the programmed protection level. It is accomplished by shorting the output via an internal SCR when th...

Chapter 2 Quick Start To Program Overvoltage Protection 35 2 5 Exit the OVP menu. The "CHANGED" message is displayed for a second to show that the new OVP trip level is now in effect. If the OVP settings are not changed, "NO CHANGE" will be displayed. The power supply will exit the O...

Chapter 2 Quick Start To Program Overvoltage Protection 36 3 Clear the overvoltage condition and exist this menu. Now, when you press the key again, the "DONE" message is displayed for a second and the OVP annunciator will not blink any more. The output will return to meter mode. Over Voltag...

Chapter 2 Quick Start To Program Overcurrent Protection 37 2 To Program Overcurrent Protection Overcurrent protection guards the load against output currents that reach a specified value greater than the programmed protection level. It is accomplished by programming the output current to zero. The f...

Chapter 2 Quick Start To Program Overcurrent Protection 38 The "CHANGED" message is displayed for a second to show that the new OCP trip level is now in effect. If the OCP settings are not changed, "NO CHANGE" will be displayed. The power supply will exit the OCP menu and the display...

Chapter 2 Quick Start To Rack Mount the Power Supply 39 2 To Rack Mount the Power Supply The power supply can be mounted in a standard 19-inch rack cabinet using one of three optional kits available. A rack-mounting kit for a single instrument is available as Option 1CM (P/N 5063-9243). Installation...

Chapter 3 Calibration Procedures Agilent Technologies Calibration Services 43 3 Closed-Case Electronic Calibration The power supply features closed- case electronic calibration since no internal mechanical adjustments are required for normal calibration. The power supply calculates correction factor...

Chapter 3 Calibration Procedures Automating Calibration Procedures 44 Automating Calibration Procedures You can automate the complete verification procedures outlined in this chapter if you have access to programmable test equipment. You can program the instrument configurations specified for each t...

Chapter 3 Calibration Procedures Test Considerations 45 3 Test Considerations To ensure proper instrument operation, verify that you have selected the correct power-line voltage prior to attempting any test procedure in this chapter. page 24 for more information. For optimum performance verification...

Chapter 3 Calibration Procedures Performance Verification Tests 46 Performance Verification Tests The performance verification tests use the power supply's specifications listed in chapter 1, "Specifications", starting on page 13. You can perform two different levels of performance verificat...

Chapter 3 Calibration Procedures Measurement Techniques 47 3 Measurement Techniques Setup for Most Tests Most tests are performed at the front terminals as shown in the following figure. Measure the dc voltage directly at the (+) and (-) terminals on the front panel. Figure 3-1. Performance Verifica...

Chapter 3 Calibration Procedures Measurement Techniques 48 General Measurement Techniques To achieve best results when measuring load regulation, peak to peak voltage, and transient response time of the power supply, measuring devices must be connected through the hole in the neck of the binding pos...

Chapter 3 Calibration Procedures Constant Voltage (CV) Verifications 49 3 Constant Voltage (CV) Verifications Constant Voltage Test Setup If more than one meter or a meter and an oscilloscope are used, connect each to the (+) and (-) terminals by a separate pair of leads to avoid mutual coupling eff...

Chapter 3 Calibration Procedures Constant Voltage (CV) Verifications 50 7 Program the output voltage to full rated value (30.0V) by sending the command. VOLT 30.0 8 Record the output voltage reading on the digital voltmeter (DVM). The readings should be within the limits of (30V 5mV). 9 Readback the...

Chapter 3 Calibration Procedures Constant Voltage (CV) Verifications 51 3 2 Connect the ac power line through a variable voltage transformer. 3 Turn on the power supply. Select the 30V/4A range, enable the output, and set the display to the limit mode. When the display is in the limit mode, program ...

Chapter 3 Calibration Procedures Constant Voltage (CV) Verifications 52 Load Transient Response Time This test measures the time for the output voltage to recover to within 15 mV of nominal output voltage following a load change from full load to half load, or half load to full load. 1 Turn off the ...

Chapter 3 Calibration Procedures Constant Current (CC) Verifications 53 3 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 foll...

Chapter 3 Calibration Procedures Constant Current (CC) Verifications 54 7 Program the output current to the full rated value (7.0A) by sending the commands: CURR 7.0 8 Divide the voltage drop (DVM reading) across the current monitoring resistor (R M ) by its resistance to convert to amps and record ...

Chapter 3 Calibration Procedures Constant Current (CC) Verifications 55 3 CC Line Regulation This test measures the change in output current that results from a change in ac line voltage from the minimum value (10% below the nominal input voltage) to the maximum value (10% above nominal voltage). 1 ...

Chapter 3 Calibration Procedures Common Mode Current Noise 56 2 Turn 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 current to full rated value (7.0A) and the voltage to the full rated value (...

Chapter 3 Calibration Procedures Performance Test Record for Agilent E3632A 57 3 Performance Test Record for Agilent E3632A CV Performance Test Record CC Performance Test Record Test Description Actual Result Specifications Upper Limit Lower Limit CV Programming A ccuracy @ 0 volts (DVM reading) +0....

Chapter 3 Calibration Procedures Calibration Security Code 58 Calibration Security Code This feature allows you to enter a security code (electronic key) to prevent accidental or unauthorized calibrations of the power supply. When you first receive your power supply, it is secured. Before you can ca...

Chapter 3 Calibration Procedures Calibration Security Code 59 3 To Unsecure the Power Supply for Calibration The power supply can use a calibration security code to prevent unauthorized or accidental calibration. This procedure shows you how to unsecure the power supply for calibration from the fron...

Chapter 3 Calibration Procedures Calibration Security Code 60 4 Unsecure the power supply . The power supply is unsecured when you press the key. You will see the above message from the front panel for one second. The "CAL MODE" message is displayed on the front panel after above message. 5 ...

Chapter 3 Calibration Procedures Calibration Count 61 3 Calibration Count The calibration count feature provides an independent "serialization" of your calibrations. You can determine the number of times that your power supply has been calibrated. By monitoring the calibration count, you can...

Chapter 3 Calibration Procedures General Calibration/Adjustment Procedure 62 General Calibration/Adjustment Procedure The calibration procedures from the front panel are described in this section. For voltage calibration, disconnect all loads from the power supply and connect a DVM across the output...

Chapter 3 Calibration Procedures General Calibration/Adjustment Procedure 63 3 To calibrate the output voltages and currents of the power supply from the front panel, proceed as follows: 1 Unsecure the power supply. To calibrate the voltage and current, you must unsecure the power supply according t...

Chapter 3 Calibration Procedures General Calibration/Adjustment Procedure 65 3 If the entered number is within an acceptable range, a "ENTERED" message appears for one second. If the entered number is not correct, an "MIN VALUE" or "MAX VALUE" message appears for one second a...

Chapter 3 Calibration Procedures General Calibration/Adjustment Procedure 66 12 Pressing the "Calibrate" key saves the new calibration constants for OVP circuit and goes to the current calibration mode. A "CALIBRATING" message appears for about several seconds to indicate that the OV...

Chapter 3 Calibration Procedures Aborting a Calibration in Progress 68 19 Pressing the "Calibrate" key saves the new calibration constants for the output current and goes to the OCP calibration mode . A "CALIBRATING" message appears for one second to indicate that the current calibra...

Chapter 3 Calibration Procedures Calibration Record for Agilent E3632A 69 3 Calibration Record for Agilent E3632A Step Calibration Description Measurement Mode (DVM) Supply being Adjusted 1 Unsecure the power supply (see page 59). 2 Turn on " CAL MODE " (simultaneously press " Calibrate ...

Chapter 3 Calibration Procedures Error Messages 70 Error Messages The following tables are abbreviated lists of error messages for the E3632A. The errors listed are the most likely errors to be encountered during calibration and adjustment. A more complete list of error messages and descriptions is ...

Chapter 3 Calibration Procedures Calibration Program 72 Calibration Program This section contains an Agilent BASIC program for calibration over the GPIB interface. This program makes software adjustments to the E3632A power supply using a current shunt and a digital mutimeter which is connected to t...

78 Theory of Operation This chapter provides block diagram level descriptions of the power supply. The descriptions provide a basic understanding of circuit operation and are intended as an aid in troubleshooting. It is assumed in the following discussions that you are familiar with the operating an...

Chapter 4 Theory of Operation Block Diagram Overview 79 4 Block Diagram Overview This discussion pertains to the block diagram on the next page. The power supply's circuitry is divided into two major blocks: the floating circuitry and the ground referenced circuitry. All power mesh and control circu...

Chapter 4 Theory of Operation Block Diagram Overview 80 Block Diagram

Chapter 4 Theory of Operation AC Input and Bias Supplies 81 4 AC Input and Bias Supplies Referring to the schematic shown on page 121 and 122, the ac mains are connected by a fused power module. This module incorporates the functions of mains connection, fusing, and line voltage selection (100/115/2...

Chapter 4 Theory of Operation Floating Logic 82 Floating Logic Referring to the schematic shown on page 124, the floating common logic controls operation of the entire instrument. All output functions and bus command interpretation is performed in the main controller U17. The front panel and the ear...

Chapter 4 Theory of Operation Power Mesh and Control 86 Power Mesh and Control Refer to the schematics shown on page 121. For the power mesh and control circuit, a preregulator is added ahead of the series pass transistor to minimize the power dissipated in the series pass transistor by controlling ...

Chapter 4 Theory of Operation Earth-Referenced Logic 88 Earth-Referenced Logic Referring to the schematic shown on page 125, the earth referenced logic circuits schematic provides all rear panel input/output capability. Microprocessor U4 handles GPIB (IEEE-488) control through bus interface chip U3 ...

Chapter 5 Service Operating Checklist 91 5 Operating Checklist Before returning your power supply to Agilent Technologies for service or repair check the following items: Is the Power Supply Inoperative? Verify that the ac power cord is connected to the power supply. Verify that the front-panel powe...

Chapter 5 Service Types of Service Available 92 Types of Service Available If your power supply fails within three years of original purchase, Agilent Technologies will repair or replace it free of charge. If your unit fails after your three year warranty expires, Agilent will repair or replace it a...

Chapter 5 Service Repacking for Shipment 93 5 • If your failed unit was "in-warranty,'' your replacement unit continues the original three year warranty period. You will not be billed for the replacement unit as long as the failed unit is received by Agilent. • If your three year warranty has ex...

Chapter 5 Service Electrostatic Discharge (ESD) Precautions 94 Electrostatic Discharge (ESD) Precautions Almost all electrical components can be damaged by electrostatic discharge (ESD) during handling. Component damage can occur at electrostatic discharge voltages as low as 50 volts. The following ...

Chapter 5 Service To Disconnect the Output Using an External Relay 95 5 To Disconnect the Output Using an External Relay When the output of the E3632A is turned off, it is implemented by setting the output to 0 volts and 0.02 amps. This gives a zero output voltage without actually disconnecting the ...

Chapter 5 Service Troubleshooting Hints 96 Troubleshooting Hints This section provides a brief check list of common failures. Before troubleshooting or repairing the power supply, make sure that the failure is in the instrument rather than any external connections. Also make sure that the instrument...

Chapter 5 Service Troubleshooting Hints 97 5 Bias Supplies Problems Check that the input to the voltage regulators of the bias supplies is at least 1 V greater than their output. Circuit failures can cause heavy loads of the bias supplies which may pull down the regulator output voltages. Check the ...

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Chapter 6 Replaceable Parts E3632-60002 Main PC Assembly 104 ReferenceDesignator Agilent PartNumber Qty Part Description Mfr.Code Mfr. Part Number C57-58 0160-6497 CAP-FXD 0.1uF +-10% 50V CER X7R 12340 C1206C104K5RAC C59-64 0160-5892 6 CAP-FXD 0.22uF +-10% 63V POLYE-MET 11892 MMK5224K63L6 C65 0180-4...

Chapter 6 Replaceable PartsE3632-60005 Front Frame Assembly 112 E3632-60005 Front Frame Assembly E3632A Power SupplyAssembly ReferenceDesignator Agilent PartNumber Qty Description MfrCode Mfr Part Number E3632-40001 1 WINDOW PLATE 01542 E3632-40001 E3632-40002 1 KEYPAD 01542 E3632-40002 E3632-40003 ...

Chapter 6 Replaceable PartsManufacturer’s List 113 6 Manufacturer’s List Mfr Code Manufacturer’s Name Manufacturer’s Address 00746 ROHM Corp Kyoto, Japan 01542 Agilent Div. 01 San Jose Components San Jose, CA, U.S.A. 01698 Texas Instrument Inc Dallas, TX, U.S.A. 02010 AVX Corp Myrtle Beach, SC, U.S....

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