Agilent Technologies E3617A, E3614A, E3615A, E3616A User Manual

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Agilent E361xA 60W BENCH SERIES DC POWER SUPPLIES

OPERATING AND SERVICE MANUAL FOR MODELS:

Agilent E3614A Agilent E3615A

Manual Part No. 5959-5310

Agilent E3616A Agilent E3617A

April 2000

Edition 8

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SAFETY SUMMARY

The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liability for the customer's failure to comply with these requirements.

BEFORE APPLYING POWER.

Verify that the product is set to match the available line voltage and that the correct fuse is installed.

GROUND THE INSTRUMENT.

This product is a Safety Class I instrument (provided with a protective earth terminal). To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground. The instrument must be connected to the ac power supply mains through a three-conductor power cable, with the third wire firmly connected to an electrical ground(safety ground) at the power outlet. Any interruption of the protective(grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury. If the instrument is to be energized via an external autotransformer for voltage reduction, be certain that the autotransformer common terminal is connected to the neutral(earthed pole) of the ac power lines (supply mains).

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE.

Do not operate the instrument in the presence of flammable gases or fumes.

KEEP AWAY FROM LIVE CIRCUITS.

Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made by qualified service personnel. Do not replace components with power cable connected. Under certain conditions, dangerous voltages may exist even with the power cable removed. To avoid injuries, always disconnect power, discharge circuits and remove external voltage sources before touching components.

DO NOT SERVICE OR ADJUST ALONE.

Do not attempt internal service or adjustment unless another person, capable of rendering first aid and resuscitation, is present.

SAFETY SYMBOLS

Instruction manual symbol; the product will be marked with this symbol when it is neces-

WARNING

CAUTION

NOTE

DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.

Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the instrument. Return the instrument to a Agilent Technologies Sales and Service Office for service and repair to ensure that safety features are maintained.

sary for the user to refer to the instruction manual.

Indicate earth(ground) terminal.

The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly performed or adhered to, could result inpersonal injury. Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met.

The CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed beyond CAUTION sign until the indicated conditions are fully understood and met.

The NOTE sign denotes important information. It calls attention to a procedure, practice, condition or the like, which is essential to highlight.

Instruments that appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel.

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Table of Contents

SAFETY SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

SAFETY REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

INSTRUMENT AND MANUAL IDENTIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

OPTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

ACCESSORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

INITIAL INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Mechanical Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Electrical Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

INSTALLATION DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Location and Coolin Outline Dia Rack Mountin

INPUT POWER REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Line Volta

Power Cord. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

ram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

e Option Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

TURN-ON CHECKOUT PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

OPERATING MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

LOCAL OPERATING MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Constant Volta

Constant Current Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Overvolta

CONNECTING LOADS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

OPERATION BEYOND RATED OUTPUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

REMOTE OPERATING MODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Remote Volta

Remote Analo

e Operaton. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

e Protection (OVP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

e Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Voltage Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

MULTIPLE-SUPPLY OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10

NORMAL PARALLEL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10

AUTO-PARALLEL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10

NORMAL SERIES OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11

AUTO-SERIES OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12

AUTO-TRACKING OPERATON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13

LOAD CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14

PULSE LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14

REVERSE CURRENT LOADING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14

OUTPUT CAPACITANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

REVERSE VOLTAGE LOADING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14

BATTERY CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14

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GENERAL INFORMATION

INTRODUCTION

This manual describes all models in the Agilent E361xA 60W Bench Power Supply family and unless stated otherwise, the information in this manual applies to all models.

SAFETY REQUIREMENTS

This product is a Safety Class I instrument, which means that it is provided with a protective earth ground terminal. This terminal must be connected to an ac source that has a 3-wire ground receptacle. Review the instrument rear panel and this manual for safety markings and instructions before operating the instrument. Refer to the Safety Summary page at the beginning of this manual for a summary of general safety information. Specif ic safety information is located at the appropriate places in this manual.

This power supply is designed to comply with the following safety and EMC(Electromagnetic Compatibility) requirements

IEC 348: Safety Requirements for Electronic Measuring

Apparatus

IEC 1010-1/EN 61010: Safety Requirements for Electrical

Equipment for Measurement, Control, and Laboratory Use

CSA C22.2 No.231: Safety Requirements for Electrical and

Electronic Measuring and Test Equipment

UL 1244: Electrical and Electronic Measuring and Testing

Equipment.

EMC Directive 89/336/EEC: Council Directive entitled Approximation of the Laws of the Member States relating to Electromagnetic Compatibility

EN 55011(1991) Group 1, Class B/CISPR 11: Limits and

Methods of Radio Interference Characteristics of

Industrial, Scientific, and Medical(ISM) Radio-Frequency Equipment

EN 50082-1(1991) /

IEC 801-2(1991):Electrostatic Discharge Requirements IEC 801-3(1984):Radiated Electromagnetic Field

Requirements

IEC 801-4(1988):Electrical Fast Transient/Burst

Requirements

ICES/NMB-001

This ISM device complies with Canadian ICES-001.

Cet appareil ISM est conforme à la norme NMB-001 du Can-

ada.

INSTRUMENT AND MANU AL ID ENTIFI CATION

A serial number identifies your power supply. The serial number encodes the country of manufacture, the date of the latest significant design change, and a unique sequential number. As an illustration, a serial number beginning with KR306 denotes a power supply built in 1993 (3=1 993, 4=1994, etc), 6th week manufacture in Korea(KR). The remaining digits of the serial number are a unique, five-digit number assigned sequentially.

If a yellow Change Sheet is supplied with this manual, its purpose is to explain any differences between your instrument and the instrument described in this manual. The change sheet may also contain information for correcting errors in the manual.

OPTIONS

Options 0EM, 0E3 and 0E9 determine which line voltage is selected at the factory. The st andard unit is configured for 115 Vac ± 10%. For information about changing the line voltage setting, see paragraph "INPUT POWER REQUIREMENTS", page 1-6.

0EM: Input power, 115 Vac ± 10%, 47-63 Hz 0E3: Input power, 230 Vac ± 10%, 47-63 Hz 0E9: Input power, 100 Vac ± 10%, 47-63 Hz 0L2: One additional manual

ACCESSORY

The accessory listed below may be ordered from your local Agilent Technologies Sales Office either with the power supply or separately . (Refer to the li st at the rear of t he manual for address.)

Agilent Part No.Description

5063-9240 Rack Kit for mounting one or two 3 1/2" high

supply in a standard 19" rack

The rack mount kit is needed for rack mounting of all models in the Agilent E361xA power supply because these supplies have molded feet.

DESCRIPTION

This power supply is suitable for either bench or rack mounted operation. It is a compact, well-regulated, Constant Voltage/Constant Current supply that will furnish full rated output voltage at the maximum rated output current or can be continuously adjusted throughout the output range. The output can be adjusted both locally from the front panel and remotely by changing the settings of the rear panel switches (See paragraph "REMOTE OPERATING MODES", page 1-9). The models in this family offer up to 60 watts of output power, with voltage up to 60 volts and current up to 6 amps as shown in Table 1.

The front panel VOLTAGE control can be used to establish the voltage limit when the supply is used as a constant current source and the CURRENT control can be used to establish the output current limit when the supply is used as a constant voltage source. The supply will automatically cross over from constant voltage to constant current operation and vice versa if the output current or voltage exceeds these preset limits.

The front panel includes an autoranging (E3614A singlerange) digital voltmeter and a single-range digital ammeter. Two 3 1/2 digit voltage and current displays accurately show the output voltage and current respectively. The output ratings for each model are shown in the Specifications and Operating Characteristics Table.

The OVP/CC SET switch is used to check the OVP trip voltage and current control set value. When pressing this switch, the voltage display indicates the OVP trip voltage and the current display indicates the current control set value.

The power supply has both front and rear output terminals. Either the positive or negative output terminal may be

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be grounded or the power supply can be operated floating at up to a maximum of 240 Volts off ground. Total output voltage to ground must not exceed 240 Vdc.

LINE FUSE

Line Voltage Fuse Agilent Part No. 100/115 Vac 2.0 AT 2110-0702 230 Vac 1.0 AT 2110-0457

Table 1. Specifications and Operating Characteristics

SPECIFICATIONS

Detailed specifications for the power supply are given in Table

1. All specifications are at front terminals with a resistive load, and local sensing unless otherwise stated. Operating characteristics provide useful, but non-warranted information in the form of the nominal performance.

*AC INPUT

An internal switch permits operation from 100, 115, or 230 Vac lines.

100 Vac ± 10%, 47-63 Hz, 163 VA, 125 W 115 Vac ± 10%, 47-63 Hz, 163 VA, 125 W 230 Vac ± 10%, 47-63 Hz, 163 VA, 125 W

DC OUTPUT

Voltage and current can be programmed via front panel control or remote analog control over the following ranges;

E3614A: E3615A: E3616A: E3617A:

0 - 8 V, 0 - 6 A 0 - 20 V, 0 - 3 A 0 - 35 V, 0 - 1.7 A 0 - 60 V, 0 - 1 A

*OUTPUT TERMINALS

The output terminals are provided on the front and rear panel. They are isolated from the chassis and either the positive or negative terminal may be connected to the ground terminal.

LOAD REGULATION

Constant Voltage - Less than 0.01% plus 2 mV for a full load to no load change in output current. Constant Current maximum change in output voltage.

- Less than 0.01% plus 250 µA for a zero to

LINE REGULATION

Constant Voltage - Less than 0.01% plus 2 mV for any line voltage change within the input rating. Constant Current age change within the input rating.

- Less than 0.01% plus 250 µA for any line volt-

PARD (Ripple and Noise)

Constant Voltage: Less than 200 µV rms and 1 mV p-p

Constant Current:

(20 Hz-20 MHz). E3614A: Less than 5 mA rms E3615A: E3616A: E3617A:

Less than 2 mA rms Less than 500 µA rms Less than 500 µA rms

OPERATING TEMPERATURE RANGE

0 to 40oC for full rated output. Maximum current is derated 1% per degree C at 40

C-55oC.

*TEMPERATURE COEFFICIENT

Maximum change in output per oC after a 30-minute warm-up. Constant Voltage: Constant Current:

Less than 0.02% plus 500 µV. E3614A: Less than 0.02% plus 3 mA E3615A: E3616A: E3617A:

Less than 0.02% plus 1.5 mA Less than 0.02% plus 1 mA Less than 0.02% plus 0.5 mA

*STABILITY (OUTPUT DRIFT)

Maximum change in output for an 8 hours following a 30 minute warm-up under constant line, load and ambient temperature. Constant Voltage: Constant Current:

Less than 0.1% plus 5 mV Less than 0.1% plus 10 mA

LOAD TRANSIENT RESPONSE TIME

Less than 50 µsec for output recovery to within 15 mV following a change in output current from full load to half load, or vice versa.

METER ACCURACY:

B±(0.5% of output + 2 counts)Bat

± 5

METER (PROGRAMMING) RESOLUTION

Voltage: E3614A 10 mV

Current:

E3615A E3616A E3617A E3614A 10 mA E3615A E3616A E3617A

10 mV (0 to 20 V), 100 mV (above 20 V) 10 mV (0 to 20 V), 100 mV (above 20 V) 10 mV (0 to 20 V), 100 mV (above 20 V)

10 mA 1 mA 1 mA

*OVERLOAD PROTECTION

A continuously acting constant current circuit protects the power supply for all overloads including a direct short placed across the terminals in constant voltage operation. The constant voltage circuit limits the output voltage in the constant current mode of operation.

*OVERVOLTAGE PROTECTION

Trip voltage adjustable via front panel control.

E3614A Range: 2.5-10 V 2.5-23 V 2.5-39 V 5-65 V Margin: Minimum setting above output voltage to avoid

false tripping: 4% of output + 2 V for all models

E3615A E3616A E3617A

*REMOTE ANALOG VOLTAGE PROGRAMMING (25 ± 5oC)

Remotely varied voltage from 0 to 10 V provides zero to maximum rated output voltage or current.

Voltage:

The programming inputs are protected against input voltages up to ±40 V.

Linearity 0.5% Current: Linearity 0.5%

REMOTE SENSING

Meets load-regulation specification when correcting for load-lead drops of up to 0.5 V per lead with sense wire resistance of less than 0.5 ohms per sense lead and lead lengths of less than 5 meters.

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Table 1. Specifications and Operating Characteristics (Cont’d)

*REMOTE PROGRAMMING SPEED

Maximum time required for output voltage to change from initial value to within a tolerance band (0.1%) of the newly programmed value following the onset of a step change in the programming input voltage.

Up: E3614A:

Down:

E3615A: E3616A: E3617A: E3614A: E3615A: E3616A: E3617A:

Full load No load

3 msec 2 msec 9 msec 6 msec 85 msec 85 msec

200 msec 200 msec

7 msec 1.6 sec 13 msec 2.2 sec 65 msec 1.8 sec

200 msec 3.2 sec

INSTALLATION

INITIAL INSPECTION

Before shipment, this instrument was inspected and found to be free of mechanical and electrical defects. As soon as the instrument is unpacked, inspect for any damage that may have occurred in transit. Save all packing materials until the inspection is completed. If damage is found, a claim should be filed with the carrier. The Agilent Technologies Sales and Service office should be notified.

Mechanical Check

This check should confirm that there are no broken knobs or connectors, that the cabinet and panel surfaces are free of dents and scratches, and that the meter is not scratched or cracked.

DC ISOLATION

± 240 Vdc maximum between either output terminal and earth ground including the output voltage.

*COOLING:

*WEIGHT:

* Operating Characteristics

instructions.

Convection cooling is employed.

12.1 lbs/5.5 Kg net, 14.9 lbs/6.75 Kg shipping.

Electrical Check

The instrument should be checked against its electrical specifications. Paragraph "TURN-ON CHECKOUT PROCEDURE" contains a brief checkout procedure and "PERFORMANCE TEST" in section SERVICE INFORMATION includes an instrument performance check to verify proper instrument operation.

INSTALLATION DATA

The instrument is shipped ready for bench operation. It is necessary only to connect the instrument to a source of power and it is ready for operation.

Location and Cooling

This instrument is air cooled. Sufficient space should be allowed so that a free flow of cooling air can reach the sides and rear of the instrument when it is in operation. It should be used in an area where the ambient temperature does not exceed 40 derated 1% per

C at 40oC-55oC.

Outline Diagram

Figure 1 is a outline diagram showing the dimensions of the instrument.

Rack Mounting

This instrument may be rack mounted in a standard 19-inch rack panel either by itself or alongside a similar unit. Please see ACCESSORY, page 1-4, for available rack mounting accessories. Each rack-mounting kit includes complete installation

C. Maximum current is

Figure 1. Outline Diagram

INPUT POWER REQUIREMENTS

This power supply may be operated from nominal 100, 115, or 230 Vac 47-63 Hertz power source. A label on the rear panel shows the nominal input voltage set for the unit at the factory. If necessary, you can convert the supply to another nominal input voltage by following the instructions below

Line Voltage Option Conversion

Line voltage conversion is accomplished by adjusting two components: the line select switch and the rear panel fuse F1. To convert the supply from one line voltage option to another, proceed as follows:

a.Disconnect power cord. b.Turn off the supply and remove the top cover by lifting the

cover upwards after taking it off from both sides of the chassis by inserting a flat-blade screwdriver into the gap on the lower rear portion of the cover.

c.Set two sections of the line voltage selector switch on the PC

board for the desired line voltage (see Figure 2).

d.Check the rating of the fuse F1 installed in the rear panel fuse

holder and replace with the correct fuse if necessary. For 100 and 115 V operation, use a normal blow 2 A fuse and for 230 V use a time delay 1 A fuse.

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e. Replace the cover and mark the supply clearly with a tag or

label indicating the correct line voltage and fuse that is in use.

Figure 2. Line Voltage Selector (set for 115 Vac)

Power Cord

To protect operating personnel, the instrument should be grounded. This instrument is equipped with a three conductor power cord. The third conductor is the ground conductor and when the power cord is plugged into an appropriate receptacle, the supply is grounded.

The power supply was shipped with a power cord for the type of outlet used at your location. If the appropriate cord was not included, contact your nearest Agilent Sales Office to obtain the correct cord.

4. DISPLAY OVP/CC SET Switch: Pressing this switch causes the VOLTS display to show voltage setting for overvoltage shutdown (trip voltage) and the AMPS display to show the current control set value. Setting values are either front panel settings or remote voltage programmed settings.

5. OVP Adjust Screwdriver Control: While pressing the DISPLAY OVP/CC SET switch, rotating the control clock-wise with a small, flat-blade screwdriver increases the setting for overvoltage shutdown.

6. VOLTS Display: Digital display of actual output voltage, or OVP shutdown setting.

7. AMPS Display: Digital display of actual output current, or output-current setting.

8. CV LED Indicator: Output voltage is regulated when lighted. This means the power supply is operating in the constant voltage mode.

9. CC LED Indicator: Output current is regulated when lighted. This means the power supply is operating in the constant current mode.

10. OVP LED Indicator: Output is shutdown by the occurrence of an overvoltage when lighted. Removing the cause of overvoltage and turning the power off, then on, resets the power supply.

TURN-ON CHECKOUT PROCEDURE

The following checkout procedure describes the use of the front panel controls and indicators illustrated in Figure 3 and ensures that the supply is operational:

OPERATING INSTRUCTIONS

INTRODUCTION

This section explains the operating controls and indicators and provides information on many operating modes possible with your instrument. The front panel controls and indicators are illustrated in Figure 3.

Figure 3. Front-Panel Controls and Indicators

1. LINE Switch: Pressing this switch turns the supply on, or off.

2. VOLTAGE Control: Clockwise rotation increases output volt- age.

3. CURRENT Control: Clockwise rotation increases output current.

MASTER

M/S 1 M/S 2

SLAVE

LOCAL

CV CC S ENSE

REMOTE

OUT+S-S

CV CC

VREF

A1 A2 A3 A4 A5

Figure 4. Switch Settings of Rear-Panel Control for Turn-

On Checkout

a. Disconnect power cord. b. Check that the rear-panel switch settings are as shown in Fig-

ure 4.

c. Check that the rear panel label indicates that the supply is set

to match your input line voltage (If not, refer to "Line Voltage Option Conversion".).

d. Check that the fuse on the rear panel is correct for your line

voltage. e. Connect the power cord and push the LINE switch to ON. f. While pressing OVP/CC SET switch, verify that the OVP

shutdown is set above 8.0, 20.0, 35.0, or 60.0 Vdc for

E3614A, E3615A, E3616A, or E3617A respectively. If not,

turn up OVP Adjust with a small flat-blade screwdriver. g. Turn VOLTAGE control fully counter clockwise to ensure that

the output of VOLTS display decreases to 0 Vdc, then fully

clockwise to ensure that output voltage increases to the maxi-

mum output voltage. h. While pressing OVP/CC SET switch, turn the CURRENT con-

trol fully counter clockwise and then fully clockwise to ensure

1-7

that the current limit value can be set from zero to maximum

y by

y g

rated value.

OPERATING MODES

The setting of the rear panel switch determines the operatin modes of the power supply. The local operating mode is set so the power suppl terminals (local sensin trols (local pro

e sensing and remote programming of output voltage and

volta current usin

LOCAL OPERA TING MODE

The power supply is shipped from the factory configured in the local operatin settin

s of the rear panel, as shown in Figure 4. The power sup-

provides constant voltage(CV) or constant current(CC) output.

Constant Voltage Operaton

To set up a power supply for constant voltage operation, proceed as follows:

senses the output voltage directly at the output

) for operation using the front panel con-

ramming). Other operating modes are: remote

external voltages.

mode. Local operating mode requires the switch

False OVP shutdowns ma too close to the suppl down volta a

e to avoid false shutdowns from load-induced transients.

usting OVP.

down volta

a. With the VOLTAGE control full

b. While depressin

c. Follow the procedure for CC or CV operaton to set the out-

Resettin

turning power off. Wait one or more seconds, and turn power on a

ain. If OVP shutdown continue to occur, check the connections

to the load and sense terminals, and check the OVP limit settin

e 4% of output +2.0 V or more above the output volt-

Follow this procedure to adjust the OVP shut-

the power suppl

the OVP Adjust control to the desired OVP shutdown usin a small, flat-blade screwdriver.

put volta

e and current

OVP. If OVP shutdown occurs, reset the suppl

occur if you set the OVP shutdown

's operating voltage. Set the OVP shut-

counter clockwise, turn on

DISPLAY OVP/CC SET switch, adjust

a. Turn on the power suppl

trol for desired output volta

b. While depressin

turn CURRENT control for the desired current limit. c. With power off connect the load to the output terminals. d. Turn on the power suppl

actual operation, if a load change causes the current

Durin

limit to be exceeded, the power suppl

cross over to constant current mode and the output voltage

will drop proportionatel

and adjust 10-turn VOLTAGE con-

e (output terminals open).

DISPLAY OVP/CC SET switch, adjust 10-

. Verify that CV LED is lighted.

will automaticall

Constant Current Operation

To set up a power supply for constant current operation, proceed as follows:

a. Turn on power suppl b. While depressin

CURRENT control for the desired output current. c. Turn up the VOLTAGE control to the desired volta d. With power off connect the load to the output terminal. e. Turn on power suppl

(If CV LED is li

settin

that is greater than the current setting multiplied by the load resistance in ohms is required for CC operation.) Durin actual operation, if a load chan be exceeded, the power suppl to constant volta output current will drop proportionatel

DISPLAY OVP/CC SET switch, adjust

e limit.

and then verify that CC LED is lighted.

hted, choose a higher voltage limit. A voltage

e causes the voltage limit to

will automatically cross over

e operation at the preset voltage limit and

Overvoltage Protection (OVP)

Adjustable overvoltage protection guards your load against over-

e. When the voltage at the output terminals increases (or is

volta increased b set b ables the output causin zero. Durin

an external source) to the OVP shutdown voltage as

the OVP ADJUST control, the supply's OVP circuit dis-

the output voltage and current to drop to

OVP shutdown the OVP LED lights.

Strong electrostatic discharge to power supply can make OVP trip and eventuall effectivel

protect output loads from the hazardous ESD

crowbar the output, which can

current.

CONNECTING LOADS

The output of the supply is isolated from earth ground. Either output terminal ma 240 volts off exceed 240 Vdc.

Each load should be connected to the power suppl usin

separate pairs of connecting wires. This will minimize mutual

effects between loads and will retain full advantage of the

couplin low output impedance of the power suppl wires should be as short as possible and twisted or shielded to reduce noise pick-up. (If a shield is used, connect one end to the power suppl ted.)

If load considerations require that the output power distribution terminals be remotel power suppl distribution terminals via a pair of twisted or shielded wires and each load separatel nals. For this case, remote sensin

raph "Remote Voltage Sensing").

be grounded or the output can be floated up to

round. Total output voltage to ground must not

output terminals

. Each pair of connectin

round terminal and leave the other end unconnec-

located from the power supply, then the

output terminals should be connected to the remote

connected to the remote distribution termi-

should be used (See para-

OPERA TION BEYOND RATED OUTPUT

The output controls can adjust the voltage or current to values up to 5% over the rated output. Althou in the 5% overran

uaranteed to meet all of its performance specifications in this

ion.

e region without being damaged, it can not be

h the supply can be operated

1-8

REMOTE OPERA TING MODES

ging

ying

Remote operating modes discussed below are remote voltage sensin

and remote voltage programming. Y ou can set up the unit for remote operatin panel switch and connectin nals to the load or the external volta

to 1.5 mm pl

can be connected to the rear panel terminals by sim-

push fitting. Thinner wires or conductors are inserted into the

connection space after depressin

Turn off the supply while making changes to rear panel switch settin of damage to the load and OVP shutdown from unintended output.

Remote Voltage Sensing

Remote voltage sensing is used to maintain good regulation at the load and reduce the de occur due to the volta

and the load. By connecting the supply for remote voltage

suppl

, voltage is sensed at the load rather than at the supply's

sensin output terminals. This will allow the suppl pensate for the volta tion.

When the suppl senses the volta terminals.

modes by changing the settings of the rear

the leads from the rear panel termi-

e. Solid conductors of 0.75

the orange opening lever.

s or connections. This avoids the possibilit

radation of regulation that would

e drop in the leads between the power

to automatically com-

e drop in the load leads and improve regula-

is connected for remote sensing, the OVP circuit

e at the sense leads and not the main output

Output Noise.

appear at the suppl

ulation. Twist the sense leads to minimize the pickup of exter-

noise picked up on the sense leads will

's output voltage and may degrade CV load

nal noise and run them parallel and close to the load leads. In nois

environments, it may be necessary to shield the sense leads. Ground the shield at the power suppl the shield as one of the sensin

Stability.

When the suppl

conductors.

is connected for remote sensing, it is

end only. Do not use

possible for the impedance of the load wires and the capacitance of the load to form a filter, which will become part of the suppl CV feedback loop. The extra phase shift created b

rade the supply's stability and can result in poor transient

de response performance or loop stabilit

. In extreme cases, it can

this filter can

cause oscillations. Keep the leads as short as possible and twist the leads of the load to eliminate the load lead inductance and keep the load capacitance as small as possible.The load leads should be of the lar the volta

e drop in each lead to 0.5 volts.

The sense leads are part of the suppl

est diameter practical, heavy enough to limit

's programming feedback control loop. Accidental open-connections of sense or load leads durin

remote sensing operation have various unwanted effects.

Provide secure, permanent connections-especiall

for the sense

leads.

MASTER

LOCAL

Remote voltage sensing compensates for a voltage drop of up to 0.5 V in each load, and there ma

be up to a 0.1 V drop between the output terminal and the internal sensin resistor, at which point the OVP circuit is connected. Therefore, the volta much as 1.1 V more than the volta load. It ma when usin

CV Re

ulation.

adds directl

e sensed by the OVP circuit could be as

e being regulated at the

be necessary to re-adjust the OVP trip voltage

remote sensing.

Notice that an

voltage drop in the sense leads

to the CV load regulation. In order to maintain the specified performance, keep the sense lead resistance to 0.5 ohms per lead or less.

Remote Sensin

chan

settings of the rear panel switch and connecting the

Connections.

Remote sensin

requires

load leads from + and - output terminals to the load and connectin

the sense leads from the +S and -S terminals to the load as

shown in Fi

ure 5.

Observe polarity when connecting the sensing leads to the load.

SLAVE

CV CC SENSE

REMOTE

nqcf

OUT

-S

pqvg\BvB BB B B

CV CC

VREF

A1 A2 A3 A4 A5

M/S 1 M /S 2

Figure 5. Remote Voltage Sensin

Remote Analog Voltage Programming

Remote analog voltage programming permits control of the regulated output volta a

e. The programming (external) voltage should not exceed 10 volts. The stabilit the stabilit disabled durin

The supply includes clamp circuits to prevent it from suppl or current when the remote pro

reater than 10 Vdc. Do not intentionally operate the sup-

e or current by means of a remotely varied volt-

of the programming voltages directly affects

of the output. The voltage control on the front panel is

remote analog programming.

more than about 120% of rated output voltage

ramming voltage is

1-9

ply above 100% rated output. Limit your programming

ge g

volta

e to 10 Vdc.

Remote Programming Connections. Remote programmin requires changing settings of the switch and connecting external volta

es to + and - terminals of "CV" or "CC" on the rear panel.

noise picked up on the programming leads will appear on the

's output and may degrade regulation. To reduce noise

suppl pick-up, use a twisted or shielded pair of wires for pro with the shield

rounded at one end only. Do not use the shield as

ramming,

a conductor. Notice that it is possible to operate a power suppl

neousl

in the remote sensing and the remote analog program-

modes.

min

Remote Pro

rear panel switch settin volta

ramming voltage produces a change in output voltage (volt-

pro

ain) as follows: E3614A: 0.8 Vdc, E3615A: 2 Vdc, E3616A:

ramming, Constant Voltage. Figure 6 shows the

s and terminal connections for remote-

e control of output voltage. A 1 Vdc change in the remote

simulta-

3.5 Vdc, E3617A: 6 Vdc

MASTER

M/S 1 M/S 2

SLAVE

NOTE: See the supplementar

ramming voltage source.

isolated pro

LOCAL

CV CC SENSE

REMOTE

Manual, if you are not using

OUT

CV CC

VREF

A1 A2 A3 A4 A5

-S

MULTIPLE-SUPPLY OPERATION

Normal parallel and auto-parallel operation provides increased output current while normal series and auto-series provides increased output volta

e of more than one supply. You can set up the unit for multiple-

a suppl and connectin

Solid conductors of 0.75 to 1.5 mm panel terminals b are inserted into the connection space after depressin openin

NORMAL P ARALLEL OPERATION

Two or more power supplies being capable of CV/CC automatic cross over operation can be connected in parallel to obtain a total output current The total output current is the sum of the output currents of the individual power supplies. The output of each power suppl be set separatel pl

should be set to the desired output voltage; the other power

suppl

with the higher output voltage setting will deliver its constant

pl current output, and drop its output volta put of the other suppl stant volta output current which is necessar

ure 8 shows the rear panel switch settings and terminal con-

Fi nections for normal parallel operation of two supplies.

POWER SUPPLY

e. Auto-tracking provides single control of output volt-

operation by changing the settings of the rear panel switch

the leads from the rear panel terminals to the load.

can be connected to the rear

simply push fitting. Thinner wires or conductors

the orange

lever.

reater than that available from one power supply.

. The output voltage controls of one power sup-

should be set for a slightly higher output voltage. The sup-

e until it equals the out-

, and the other supply will remain in con-

e operation and only deliver that fraction of its rated

to fulfill the total load demand.

MASTER

LOCAL

can

Figure 6. Remote Voltage Programming, Constant

Volta

Remote Programming, Constant Current. Figure 7 shows the

rear panel switch settin

e control of output current. A 1 Vdc change in the remote

volta

ramming voltage produces a change in output current (cur-

pro rent

ain) as follows: E3614A: 0.6 Adc, E3615A: 0.3 Adc,

s and terminal connections for remote-

E3616A: 0.17 Adc, E3617A: 0.1 Adc

MASTER

M/S 1 M/S 2

SLAVE

NOTE: See the supplementar

ramming voltage source.

isolated pro

LOCAL

CV CC SENSE

REMOTE

Manual, if you are not using

OUT

CV CC

VREF

A1 A2 A3 A4 A5

-S

Figure 7. Remote Voltage Programming, Constant

Current

Remote Programming Speed. See the table of Specifications,

e 1-5.

SLAVE

MASTER

SLAVE

CV CC SENSE

REMOTE

LOCAL

CV CC SENSE

REMOTE

OUT

+S -S

LOAD

OUT

VREF

CV CC

-S

CV CC

A1 A2 A3 A4 A5

VREF

A1 A2 A3 A4 A5

M/S 1 M/S 2

POWER SUPPLY

M/S 1 M/S 2

Figure 8. Normal Parallel Operation of Two Supplies

AUTO-PARALLEL OPERATION

Auto-parallel operation permits equal current sharing under all load conditions, and allows complete control of output current from one master suppl units are called slaves. Normall model number should be connected for auto-parallel operation, since the supplies must have the same volta rent monitorin each slave is approximatel ure 10 show the rear panel switch settin for auto-parallel operation of two supplies and three supplies.

. The control unit is called the master; the controlled

, only supplies having the same

e drop across the cur-

resistor at full current rating. The output current of

equal to the master's. Figure 9 and Fig-

s and terminal connections

1-10

Settin

Voltage and Current. Turn the slave unit's CURRENT

control full desired output volta in a completel stant volta

clockwise. Adjust the master unit's controls to set the

e and current. The master supply operates

normal fashion and may be set up for either con-

e or constant current operation as required. Verify that

the slave is in CV operation.

ramming according to the remote-programming instructions.

MASTER POWER SUPPLY

MASTER

LOCAL

For auto-parallel operation of two supplies, the combined output volta

e is the same as the master unit's voltage setting, and the

combined output current is two times the master unit's current. In

eneral, for two supplies, the auto-parallel output current(Io) is

Io = Im + Is = 2Im

where Im = master unit's output current

Is = slave unit's output current

Proportional currents from auto-paralleled units require equal load-lead volta the load usin to provide equal volta not feasible, connect each suppl terminals usin connect the distribution terminals to the load with a sin

e drops. Connect each supply to

separate pairs of wire with length chosen

e drops from pair to pair. If this is

to a pair of distribution

equal- voltage-drop wire pairs, and then

pair of leads.

MASTER POWER SUPPLY

MASTER

SLAVE

MASTER

SLAVE

CV CC SENSE

M/S 1 M/S 2

SLAVE POWER SUPPLY

M/S 1 M/S 2

LOCAL

REMOTE

LOCAL

REMOTE

OUT

-S

LOAD

OUT

-S

CV CC

VREF

A1 A2 A3 A4 A5

Figure 9. Auto-Parallel Operation of Two Supplies

M/S 1 M/S 2

CV CC SENSE

SLAVE

SLAVE POWER SUPPLY

MASTER

M/S 1 M/S 2

CV CC SENSE

SLAVE

SLAVE POWER SUPPLY

MASTER

M/S 1 M/S 2

CV CC SENSE

SLAVE

REMOTE

LOCAL

REMOTE

LOCAL

REMOTE

OUT

+S -S

OUT

-S

CV CC

LOAD

CV CC VREF A1 A2 A3 A4 A5

-S

CV CC

VREF

A1 A2 A3 A4 A5

Figure 10. Auto-Parallel Operation of Three Supplies

NORMAL SERIES OPERA TION

Series operation of two or more power supplies can be accomplished up to the output isolation ratin obtain a hi

her voltage than that available from a single supply. Series connected supplies can be operated with one load across both supplies or with a separate load for each suppl power supplies have a reverse polarit the output terminals so that if operated in series with other supplies, dama suppl

e will not occur if the load is short-circuited or if one

is turned on separately from its series partners. When this connection is used, the output volta of the individual supplies. Each of the individual supplies must be adjusted in order to obtain the total output volta shows the rear panel switch settin normal series operation of two supplies.

POWER SUPPLY

MASTER

LOCAL

of any one supply to

. These

diode connected across

e is the sum of the voltages

e. Figure 11

s and terminal connections for

Overvoltage Protection. Adjust the desired OVP shutdown limit

the master unit's OVP Adjust control. Set the slave units'

usin OVP limits above the master's. When a master-unit shuts down, the master pro slave unit shuts down, it shuts onl rent is

rams the slave units to zero voltage output. If a

itself down. If the required cur-

reat enough, the master will switch from CV to CC opera-

tion.

Remote Sensin

connect remote-sense leads onl the remote-sensin

Remote Analo

auto-parallel operation, set up onl

. To remote sense with auto-parallel operation,

to the master unit according to

instructions.

Voltage Programming. To remote program with

the master unit for remote pro-

M/S 1 M/S 2

POWER SUPPLY

M/S 1 M/S 2

SLAVE

MASTER

SLAVE

CV CC SENSE

REMOTE

LOCAL

CV CC SENSE

REMOTE

OUT

+S -S

LOAD

OUT

VREF

CV CC

-S

CV CC

A1 A2 A3 A4 A5

VREF

A1 A2 A3 A4 A5

Figure 11. Normal Series Operation of Two Supplies

1-11

AUTO-SERIES OPERATION

(S2)

Auto-series operation permits equal or proportional voltage sharin

, and allows control of output voltage from one master unit. The volta the front panel VOLTAGE control on the master and volta divider resistor. The master unit must be the most positive suppl

of the series. The output CURRENT controls of all series units are operative and the current limit is equal to the lowest settin

. If any output CURRENT controls are set too low, automatic cross over to constant current operation will occur and the output volta panel switch settin operation of two supplies and three supplies. This mode can

ive ±voltage tracking operation of two supplies with two

also separate loads.

e of the slaves is determined by the setting of

e will drop. Figure 12 and Figure 13 show the rear

s and terminal connections for Auto-series

above the master unit's current settin

to avoid having the slave

switch to CC operation. When in CC operation the combined output current is the same

as the master unit's current settin combined output volta slave unit's output volta

Overvolta

e Protection.

e is the sum of the master unit's and the

es.

Set the OVP shutdown volta unit so that it shuts down at a volta durin

auto-series operation. When a master unit shuts down, it pro-

, and when in CV operation the

e in each

e higher than its output voltage

rams any slave units to zero output. When a slave unit shuts down,

it shuts down onl

itself (and any slaves below it in the stack). The master (and all slaves above the shut-down slave) continues to suppl

output voltage.

Mixed model numbers ma

be employed in auto-series combi-

nation without restriction, provided that each slave is specified as

capable of auto-series operation. If the master supply is set

bein up for constant current operation, then the master-slave combination will act as a composite constant current source.

T otal output voltage to ground must not exceed 240 Vdc.

Determining Resistors.

multiple) of the master unit's volta the slave unit. Notice that the percenta

e contributed by each supply is independent of the magnitude

a of the total volta

External resistors control the fraction (or

e setting that is supplied from

e of the total output volt-

e. For two units in auto-series the ratio of R1 to

R2 is

(R1+R2)/R1 = (Vo/Vm) R2/R1 = (Vs/Vm)

Where Vo = auto-series volta

Vm = master unit's output volta Vs = slave unit's output volta

For example, usin

the E3617A as a slave unit and putting R2=50

e = Vs + Vm

kΩ (1/4 watt), then from the above equations,

R1 = R2(Vm/Vs) = 50(Vm/Vs) kΩ

In order to maintain the temperature coefficient and stabilit mance of the suppl

, choose stable, low noise resistors.

perfor-

MASTER POWER SUPPLY

MASTER

SLAVE

MASTER

SLAVE

CV CC SENSE

M/S 1 M/S 2

SLAVE POWER SUPPLY

M/S 1 M/S 2

LOCAL

REMOTE

LOCAL

REMOTE

OUT

+S -S

LOAD

OUT

-S

CV CC

VREF

A1 A2 A3 A4 A5

R1 R2

A1 A2 A3 A4 A5

Figure 12. Auto-Series Operation of Two Supplies

MASTER POWER SUPPLY

MASTER

M/S 1 M/S 2

SLAVE

SLAVE POWER SUPPLY(S1)

MASTER

LOCAL

CV CC SENSE

REMOTE

LOCAL

LOAD

OUT

-S

CV CC

VREF

R1 R2

A1 A2 A3 A4 A5

M/S 1 M/S 2

It is recommended to connect a 0.1 µF capacitor in parallel with R2 in two supplies operation or R2 and R4 in

CV CC SENSE

SLAVE

SLAVE POWER SUPPLY(S2)

MASTER

REMOTE

LOCAL

OUT

-S

CV CC

VREF

R3 R4

A1 A2 A3 A4 A5

three supplies operation to ensure the stable operation.

Setting Voltage and Current.

set the desired output volta of the slave unit is disabled. Turnin master unit will result in a continuous variation of the output of the series combination, with the contribution of the master's output

e to that of the slave's voltage always remaining in the ratio

volta of the external resistors. Set the CURRENT control of slave unit

Use the master unit's controls to

e and current. The VOLTAGE control

the voltage control of the

M/S 1 M/S 2

CV CC SENSE

SLAVE

Vo=Vm(1+

ure 13. Auto-Series Operation of Three Supplies

REMOTE

)

OUT

Where Vo = Auto-Series volta

-S

CV CC

Vm = master unit's output volta Vs1 = slave(S1) unit's output volta Vs2 = slave

unit's output voltage

VREF

A1 A2 A3 A4 A5

e = Vm + Vs1 + Vs2

1-12

Remote Sensin

. To remote sense with auto-series operation, set SENSE switch of the master unit and set SENSE switch of the slave unit to remote.

Remote Analo

Voltage Programming. To remote analog pro-

ram with auto-series operation, connect program (external) volt-

es to the "CV" or "CC"" terminal of the master unit and set "CV"

a or "CC" switch of the master unit to remote.

AUTO-TRACKING OPERATON

Auto-tracking operation of power supplies is similar to auto-series operation except that the master and slave supplies have the same output polarit This operation is useful where simultaneous turn-up, turn-down or proportional control of all power supplies is required.

ure 14 and Figure 15 show two and three supplies connected in auto-trackin to

ether as a common or ground point. For two units in auto-

a fraction R2/(R1+R2) of the output of the master suppl

trackin is provided as one of the inputs to the comparison amplifier of the slave suppl

in an auto-tracking operation must be the positive supply hav-

pl in

the largest output voltage. Turn-up and turn-down of the

, thus controlling the slave's output. The master sup-

power supplies are controlled b maintain the temperature coefficient and stabilit the power suppl noise, low temperature.

with respect to a common bus or ground.

with their negative output terminals connected

the master supply. In order to

specifications of

, the external resistor should be stable, low

Remote Analo

Programming. To simultaneously remote pro-

ram both units' output voltages, set up only the master unit for

remote volta

instructions. To vary the fraction of the output voltage contri-

min bution b in two units operation. To independentl unit's output current settin output current accordin

e programming according to the remote program-

the slave unit, connect a variable resistor in place of R2

remote program each

, set up each unit for remote control of

to the instructions under "Remote Pro-

ramming, Constant Current" paragraph.

MASTER POWER SUPPLY

MASTER

CV CC SENSE

M/S 1 M/S 2

SLAVE

SLAVE POWER SUPPLY

MASTER

CV CC SENSE

M/S 1 M/S 2

SLAVE

LOCAL

REMOTE

LOCAL

REMOTE

OUT

+S -S

LOAD

OUT

-S

CV CC

VREF

A1 A2 A3 A4 A5

R1 R2

A1 A2 A3 A4 A5

Figure 14. Auto-Tracking Operation of Two Supplies

Determinin

the master unit's volta two units in auto-trackin

Resistors. External resistors control the fraction of

e that is supplied from the slave unit. For

the ratio R1 and R2 is

R2/(R1+R2 = (Vs/Vm) Where Vm = master output volta

Vs = slave output volta

It is recommended to connect a 0.1 µF capacitor in parallel with R2 in two supplies operation or R2 and R4 in three supplies operation to ensure the stable operation.

Setting Voltage and Current. Use the master unit's VOLTAGE control to set the output volta CV operation, the master's output volta volta

e setting, and the slave's output voltage for two units operation

e from both units. When the master is in

e(Vm) is the same as its

is Vm(R2/(R1+R2)). The VOLTAGE control of the slave unit is disabled. Set the CURRENT controls of master and slave units above the required currents to assure CV operation of master and slave units.

Overvolta

unit so that it shuts down at a volta a

e during auto-tracking operation. When a master unit shuts down, it pro unit shuts down, it shuts down onl

Remote Sensin

e Protection. Set the OVP shutdown voltage in each

e higher than its output volt-

rams any slave units to zero output. When a slave

itself.

. To include remote sensing with auto-trackin operation independently, set up each unit for remote sensin according to the remote-sensing instructions under previous

raph.

para

MASTER POWER SUPPLY

MASTER

M/S 1 M/S 2

SLAVE

SLAVE POWER SUPPLY(S1)

MASTER

M/S 1 M/S 2

SLAVE

SLAVE POWER SUPPLY(S2)

MASTER

M/S 1 M/S 2

SLAVE

Vs1 =

R1+

Vs2 =

R3+

ure 15. Auto-Tracking Operation of Three Supplies

CV CC SENSE

REMOTE

LOCAL

CV CC SENSE

REMOTE

LOCAL

CV CC SENSE

REMOTE

Vs1

LOCAL

Where

OUT

-S

LOAD

OUT

-S

LOAD

OUT

-S

Vm = masters unit's output volta Vs1 = slave(S1) unit's output volta Vs2 = slave(S2) unit's output volta

CV CC

VREF

A1 A2 A3 A4 A5

R1 R2

VREF

A1 A2 A3 A4 A5

R3 R4

VREF

A1 A2 A3 A4 A5

e e

1-13

LOAD CONSIDERATIONS

g cy

This section provides information on operating your supply with various t

PULSE LOADING

The power supply will automatically cross over from constantvolta (over the preset limit) in the output current. Althou limit ma currents (as occur in pulse loadin rent limit and cause cross over to occur. If this cross over limitin is not desired, set the preset limit for the peak requirement and not the avera

REVERSE CURRENT LOADING

An active load connected to the power supply may actuall deliver a reverse current to the power supply during a portion of its operatin pump current into the suppl ble dama these effects, it is necessar load resistor so that the power supply delivers current through the entire operatin

pes of loads connected to its output.

e to constant current operation in response to an increase

h the preset

be set higher than the average output current, high peak

) may exceed the preset cur-

cle. An external source can not be allowed to

without loss of regulation and possi-

e to the output capacitor of the power supply. To avoid

to preload the supply with a dumm

cle of the load devices.

a. The output impedance of the power suppl

increasin

b. The recover

resistance chan

c. A lar

load occurs when the load resistance is reduced rapidl

frequency.

time of the output voltage is longer for load

es.

e surge current causing a high power dissipation in the

decreases with

REVERSE VOL TAGE LOADING

A diode is connected across the output terminals with reverse

. This diode protects the output electrolytic capacitors and

polarit the series re a

e applied across the output terminals. For example, in series operation of two supplies, if the AC is removed from one suppl the diode prevents dama would otherwise result from a reverse polarit

Since series re a

e, another diode is connected across the series transistor. This diode protects the series re operation if one suppl before the other.

ulator transistors from the effects of a reverse volt-

e to the unenergized supply which

voltage.

ulator transistors cannot withstand reverse volt-

ulators in parallel or auto-parallel

of the parallel combination is turned on

BA TTER Y CHARGING

The power supply's OVP circuit contains a crowbar SCR, which effectivel an external volta output, and OVP inadvertentl sink a large current from the source; possibly damaging the supply. To avoid this a diode must be connected in series with the output as shown in Fi

shorts the output of the supply whenever the OVP trips. If

e source such as a battery is connected across the

triggered, the SCR will continuousl

ure 17.

Figure 16. Reverse Current Loading Solution

Figure 17. Recommended Protection Circuit for

Batter

OUTPUT CAP ACITANCE

An internal capacitor, connected across the output terminals of the power suppl duration durin added externall decrease the safet hi

h-current pulse may damage load components before the

e output current is large enough to cause the current limit-

avera

circuit to operate.

The effect of the output capacitor durin tion are as follows:

, helps to supply high-current pulses of short

constant voltage operation. Any capacitance

will improve the pulse current capability, but will

provided by the current limiting circuit. A

constant current opera-

1-14

Chargin

SERVICE INFORMATION

Figure A-1. Block Diagram

PRINCIPLES OF OPERATION

(Block Diagram Overview)

Throughout this discussion, refer to both the block diagram of Figure A-1 and the schematic diagrams at the rear of the manual. The input ac line voltage is first applied to the preregulator which operates in conjunction with the SCR control circuit (preregulator control circuit) to rectify the tap switched AC voltage. This preregulator minimizes the power dissipated in the series regulating elements by controlling the dc level across the input filter capacitor, depending on the output voltage.

To achieve this, tap switching is accomplished by four SCRs and one bridge diode (CR10, CR12, CR15, CR18 and CR13) and the SCR control circuit. By selecting different SCR firing combinations from SCR control circuit, these circuits allow the input capacitors (C7 and C8) to charge to one of four discrete voltage levels, depending on the output voltage required.

The main secondary winding of the power transformer has three sections (N1, N2, and N3), each of which has a different turns ratio with respect to the primary winding. At the beginning of each half-cycle of the input ac, the control circuit determines whether one pair, both or none of the SCR will be fired. If neither SCR is fired, the bridge diode (CR13) receives an ac input voltage that is determined by N1 turns and the input capacitors charge to a corresponding level. If SCR CR15 and CR18 are fired, input capacitors charge to the voltage determined by N1+N2 turns. Similarly, if CR10 and CR12 are fired the capacitors are charged by N1 + N3. Finally, if all SCRs are fired simultaneously, input capacitors charge to its highest voltage level determined by N1 + N2 + N3 turns.

The SCR control circuit determines which SCRs are to be fired by monitoring the output voltage and comparing these values against a set of three internally derived reference levels. These three reference levels are translated into boundary lines to allow the output characteristic to be mapped into four operating regions (Figure A-2). The boundary lines, which are invisible to the user, are divided into four operating regions (V1, V2, V3, and V4) to minimize the power dissipation in the

A-1

series pass transistors. Whenever the output volta

the slopin the input capacitors char Fi result of the other volta

V1 line, the control circuit inhibits four SCRs and

e to a voltage determined by N1.

ure A-2 indicates the windings that are connected as a

e decisions.

e is below

Full protection a the Constant Volta there is not an lies outside the operatin or constant current operation, the proper choice of front panel

e and current control settings insures optimum pro-

volta tection for the load device as well as full protection for the power suppl

The reference and bias circuit provides stable reference volt-

es which are used by the constant voltage/current error

a amplifier circuits for comparison purpose. The displa provides an indication of output volta stant volta

ainst any overload condition is inherent in

e/Constant Current design principle since

load condition that can cause an output which

region. For either constant voltage

circuit

e and current for con-

e or constant current operating modes.

Figure A-2. Output Power Plot

The series regulators (Q1 and Q4) are part of a feedback loop which consists of the driver and the Constant Volta stant Current error amplifier. The series re loop provides "fine and fast" re

ulator feedback loop handles large, relatively slow, reg-

prere ulation demands.

ulator is made to alter its conduction to maintain a

The re constant output volta across the current samplin input to the constant current error amplifier. The constant volta

e error amplifier obtains its input by sampling the output

e of the supply.

volta

changes in output voltage or current are detected and amplified b cuit and applied to the series re and amplitude to counteract the chan current.

Two error amplifiers are included in a CV/CC suppl controllin rent. Since the constant volta zero output impedance and alters the output current whenever the load resistance chan amplifier causes the output impedance to be infinite and chan tance chan operate simultaneousl tance, the power suppl source or as a constant current source - it can not be both; transfer between these two modes is accomplished at a value of load resistance equal to the ratio of the output volta trol settin

the constant voltage or constant current error cir-

output voltage, the other for controlling output cur-

es the output voltage in response to any load resis-

e, it is obvious that the two amplifiers can not

to the output current control setting.

e or current. The voltage developed

ulation of the output while the

resistors (R58 and R59) is the

ulator in the correct phase

e amplifier tends to achieve

es, while the constant current

. For any given value of load resis-

must act either as a constant voltage

ulator feedback

e in output voltage or

e/Con-

, one for

e con-

An operator error or a component failure within the re feedback loop can drive a power supply's output voltage to

times its preset value. The overvoltage protection cir-

man cuit is to protect the load a insures that the power suppl never exceed a preset limit.

Diode CR19 is connected across the output terminals in reverse polarit and the series re reverse volta

The displa D converter and LED drive.

. It protects the output electrolytic capacitor

ulator transistors from the effects of a

e applied across the output terminals.

power circuit provides voltage which is used by A/

ainst this possibility. The circuit

voltage across the load will

ulatin

MAINTENANCE

INTRODUCTION

This section provides performance test and calibration procedures and troubleshootin tion verification tests comprise a short procedure to verif the power suppl specified parameters.

If a fault is detected in the power suppl performance check or durin the troubleshootin form an returnin performance check to ensure that the fault has been properl corrected and that no other faults exist.

the power supply to normal operation, repeat the

is performing properly, without testing all

necessary adjustments and calibrations. Before

Test Equipment Required

The following Table A-1 lists the equipment required to perform the tests and adjustments of this section. You can separatel identify the equipment for performance tests, calibration, and troubleshootin

in the USE column of the table.

Operation Verification Tests

The following tests assure that the power supply is performin

properly. They do not, however, check all the specified parameters tested in the complete performance test described below. Proceed as follows:

information. The following opera-

that

while making the

normal operation, proceed to

procedures. After troubleshooting, per-

A-2

a.Perform turn-on checkout procedure given in page 1-7. b.Perform the CV and CC Load Regulation perfor-

mance tests given in the following paragraphs respectively.

PERFORMANCE TESTS

The following paragraphs provide test procedures for verifying the power supply's compliance with the specifications of Table 1. Please refer to adjustment and calibration or troubleshooting procedure if you observe any out of specification performance.

Measurement Techniques

Setup for All Tests.

+S and -S terminals on the rear panel; in this way the monitoring device sees the same performance as the feedback amplifier within the power supply. Failure to connect the monitoring device to the proper points shown in Figure A-3 will result in the mea-

surement not of the power supply characteristics, but of the

power supply plus the resistance of the leads between its output terminals and the point of connection.

Use separate leads to all measuring devices to avoid the subtle mutual coupling effects that may occur between measuring devices unless all are returned to the low impedance terminals of the power supply. Twisted pairs or shielded cable should be used to avoid pickup on the measuring leads.

Measure the output voltage directly at the

Electronic Load.

electronic load to test the supply quickly and accurately. An electronic load is considerably easier to use than load resistor. It eliminates the need for connecting resistors or rheostats in parallel to handle the power, it is much more stable than carbon-pile load, and it makes easy work of switching between load conditions as is required for the load regulation and load transient response tests.

Current Monitoring Resistor Rs.

measurement error caused by voltage drops in the leads and connections, connect the current monitoring (sampling) resistor between -OUT and the load as a four-terminal device. Figure A-3 shows correct connections. Connect the current monitoring test leads inside the load lead connections directly at the monitoring resistor element. Select a resistor with stable characteristics and lower temperature coefficient (see Table A-1).

The test and calibration procedures use an

To eliminate output-current

Figure A-3. Current Monitoring Resistor Connections

Table A-1. Test Equipment Required

TYPE REQUIRED CHARACTERISTICS USE RECOMMENDED MODEL

Oscilloscope Sensitivity : 1 mV

RMS Voltmeter True rms, 20 MHz bandwidth

Multimeter Resolution : 100 nV

Electronic Load Volta

Load Resistor (R

Current Monitoring (Sampling) Resistor (R

Variable Volta Auto Transformer

) 1.3 ohm 60 W, 6.6 ohm 60 W, 20.5 ohm 60 W,

Bandwidth : 20 MHz/100 MHz Input : Differential, 50 ohm and 100 ohm

Sensitivit Accuracy : 5%

Accuracy : 0.0035%

Current Range : 10 Adc Open and short switches Transient on/off

60 ohm 60 W

0.1 ohm 0.1% 10 W, 1 ohm 1% 5 W P, A

)

Range : 85-130 and 200-260 Volts P, T

* P = Performance testing A = Calibration adjustments T = Troubleshooting.

y : 1 mV

ge Range : 240 Vdc

P, T Agilent 54600A

P, A, T Agilent 34401A

P Agilent 6063A

A-3

CONST ANT VOLTAGE (CV) TESTS

CV Setup.

output to assure CV operation. The onset of constant current can cause a drop in output volta other performance chan stant volta

Load Regulation (Load Effect)

Definition:

state value of dc output voltage due to a change in load resistance from open circuit to full load or from full load to open circuit.

Test Parameters:

Test Procedure:

For all CV tests set the output current at full rated

e, increased ripple, and

es not properly ascribed to the con-

e operation of the supply.

CV Load re

Measured Variable: Output Volta

ulation is the change in the stead

Expected Results: Less than 0.01% plus 2 mV

a. Connect the test equipment as shown in Fi

ure A-4. Operate the electronic load in constant current mode and set its current to the full rated value of the power

(6 A for E3614A, 3 A for E3615A, 1.7 A for

suppl E3616A and 1 A for E3617A).

b. Turn the suppl

trol full

c. Turn up output volta

's power on and turn CURRENT con-

clockwise.

e to the full rated value (8 V for E3614A, 20 V for E3615A, 35 V for E3616A and 60 V for E3617A) as read on the di

d. Record the output volta

ital voltmeter.

e at the digital voltmeter. e. Operate the electronic load in open(input off) mode. f. When the readin

ital voltmeter again. Check that the two recorded

the di readin

s differ less than 0.01% of output voltage plus 2

settles, record the output voltage on

mV .

Line Regulation (Source Effect)

Definition:

value of dc output volta from a minimum to a maximum value(±10% of nominal volta

e).

Test Parameter:

Test Procedure:

Line re

ulation is the change in the steady state

e due to a change in ac input voltage

Measured Variable: Output Volta

Expected Results: Less than 0.01% plus 2 mV

a. Connect the test equipment as shown in Fi

ure A-4. Operate the electronic load in constant current mode and set its current to the full rated value of the power

suppl

b. Connect the suppl

to the ac power line through a variable autotransformer which is set for low line volta

e(104 Vac for nominal 115 Vac, 90 Vac for nominal

100 Vac, and 207 Vac for nominal 230 Vac).

c. Turn the suppl

trol full

's power on and turn CURRENT con-

clockwise.

d. Adjust VOLTAGE control until the front panel VOLTS

displa

indicates exactly the maximum rated output

volta

e. Record volta f. Adjust autotransformer to hi

e indicated on the digital voltmeter.

h line voltage(127 Vac for nominal 115 Vac, 110 Vac for nominal 100 Vac, and 253 Vac for nominal 230 Vac).

. When the reading settles, record the output voltage

ain. Check that the two recorded readings differ

a less than 0.01% of output volta

e plus 2 mV.

Load Transient Response Time

Definition :

within a specified band around its volta from full load to half load or half load to full load.

This is the time for the output volta

e following a change

e to return to

OUT

LOAD

CV CC

-S

LOCAL

REMOTE

SENSE

DVM

Model

E3614A, 15A, 16A

E3617A

MASTER

M/S 1 M/S 2

SLAVE

+- +-

ELECTRONIC

Figure A-4. Basic Test Setup

A1 A2 A3 A4 A5VREF

VOLTMETER

POWER SUPPLY

UNDER TEST

DIGITAL

0.1 ohm 0.1% 10W

1 ohm 1% 5W

Test Parameter:

Test Procedure:

A-4

Measured Variable: Output Volta

e Transients Expected Results: Less than 50 usec (at 15 mV from base line)

a. Connect the test equipment as shown in Fi

ure A-4, but replace the DVM with the oscilloscope. Operate the electronic load in constant current mode.

b. Turn the suppl

trol full

c. Turn up output volta

's power on and turn CURRENT con-

clockwise.

e to the full rated value.

d. Set the electronic load to transient operation mode

between one half of suppl

's full rated value at a 1 KHz rate with 50% duty

pl c

cle.

e. Set the oscilloscope for ac couplin

lock on either the positive or ne

f. Adjust the oscilloscope to displa

's full rated value and sup-

, internal sync and

ative load transient.

transients as in Fig-

ure A-5.

. Check that the pulse width of the transients at 15 mV

from the base line is no more than 50 usec as shown.

Figure A-5. Load Transient Response Time Waveform

PARD(Ripple and Noise)

Definition: PARD is the Periodic and Random Deviation of

the dc output volta bandwidth and with all other parameters maintained constant. Constant volta square(rms) or peak-to-peak(pp) values over a 20 Hz to 20 MHz bandwidth. Fluctuations below the lower frequenc are treated as drift.

e from its average value, over a specified

e PARD is measured in the root-mean-

limit

PARD(RMS) Measurement

The rms measurement is not an ideal representation of the noise, since fairl could be present in the ripple and not appreciabl the rms value.

high output noise spikes of short duration

increase

Test Parameter:

Measured Variable: Output Volta Expected Results: Less than 200 µV rms

Test Procedure:

a. Connect the test equipment as shown in Fi b. Turn the suppl

trol full

c. Turn up output volta

that the suppl Reduce VOLTAGE control if not li

d. Check that the rms noise volta

meter is less than 200BµV.

's power on and turn CURRENT con-

clockwise.

e to the full rated value. Check

's CV indicator remains lighted.

e(rms)

hted.

e at the true rms volt-

ure A-6.

Figure A-6. CV PARD RMS Measurement Test Setup

PARD(Peak-to-Peak) Measurement

The peak-to-peak measurement is particularly important for applications where noise spikes could be detrimental to a sensitive load, such as lo

Test Parameter:

Measured Variable: Output volta Expected Results: Less than 1 mV p-p (20 Hz-20 MHz)

Test Procedure:

A-5

ic circuitry.

e(peak-to-peak)

a. Connect the test equipment as shown in Fi

b. Turn the suppl

trol full

c. Turn up output volta

that the suppl Reduce VOLTAGE control if not li

d. Set the oscilloscope to AC mode and bandwidth to 20

MHz.

e. Check that the peak-to-peak noise is less than 1 mV.

's power on and turn CURRENT con-

clockwise.

e to the full rated value. Check

's CV indicator remains lighted.

hted.

ure A-7.

Figure A-7.BCV PARD Peak-to-Peak Measurement Test

Setup

CV Drift (Stability)

Definition: The chan

first 8 hours followin stant input line volta ambient temperature.

Test Parameter:

Measured Variable: Output Volta Expected Results: Less than 0.1% plus 5 mV

Test Procedure:

a. Connect the DVM across Rs in Fi b. Operate the electronic load in constant current mode

and set its current to the full rated value of power sup-

c. Turn the suppl

trol full

d. Turn up output volta

on the di e. After a 30-minute warm-up, note the volta f. The output volta

0.1% plus 5 mV from the readin

over a period of 8 hours.

e in output voltage (dc to 20 Hz) for the

a 30-minute warm-up period with con-

e, constant load resistance and constant

ure A-4.

's power on and turn CURRENT con-

clockwise.

e to the full rated value as read

ital voltmeter.

e on DVM.

e reading should deviate less than

obtained in step e

CONST ANT CURRENT (CC) TESTS

CC Setup. Constant current tests are analo

volta

e tests, with the supply's output short circuited and the e set to full output to assure CC operation. For output

volta current measurements the current monitorin be treated as a four terminal device. Refer to the "Measurement Techniques" for details. All constant current measurements are made in terms of the chan resistor; the current performance is calculated b these voltage changes by ohmic value of Rs.

Load Regulation (Load Effect)

Definition: CC Load re

value of dc output current due to a chan from short circuit to full load or from full load to short circuit.

Test Parameter:

Measured Variable: Output Current Expected Results: Less than 0.01% plus 250 µA

Test Procedure:

a. Connect the DVM across Rs in Fi

the electronic load in constant volta its volta

b. Turn the suppl

trol full

c. Turn up output current to the full rated value. Check

that the AMPS displa indicator remains li if not li

d. Record the volta

e. Operate the electronic load in short (input short)

f. When the readin

dividing this voltage by Rs.

rent b

mode.

ain and convert it current. Check that the two recorded readin current plus 250 µA.

ulation is the change in the steady state

e to the full rated value of power supply.

's power on and turn VOLTAGE con-

clockwise.

reads full rated values and CC

hted. Reduce CURRENT control

hted.

e across Rs and convert it to cur-

settles, record voltage across Rs

s differ less than 0.01% of output

Line Regulation (Source Effect)

Definition:

value of dc output current due to a chan from the minimum to maximum value(±10% of nominal volta

Test Parameter:

Test Procedure:

Line re

Measured Variable: Output Current Expected Results: Less than 0.01% plus 250 µA

a. Connect the DVM across Rs in Fi

the electronic load in constant volta its volta

b. Connect the suppl

variable autotransformer that set for low line volta

e(104 Vac for nominal 115 Vac, 90 Vac for nominal 100 Vac, and 207 Vac for nominal 230 Vac).

c. Turn the suppl

trol full

d. Turn up output current to the full rated value. Check

that the AMPS displa indicator remains li if not li

ulation is the change in the steady state

e to the full rated value of power supply.

to the ac power line through a

's power on and turn VOLTAGE con-

clockwise.

reads full rated values and CC

hted. Reduce CURRENT control

hted.

ous to constant

resistor must

e in voltage across this

dividin

e in load resistance

ure A-4. Operate

e mode and set

e in ac input voltage

e).

ure A-4. Operate

e mode and set

A-6

e. Record output volta

current b

f. Adjust autotransformer to the hi

Vac for nominal 115 Vac, 110 Vac for nominal 100 Vac, and 253 Vac for nominal 230 Vac).

. When the reading settles, record the voltage across

Rs a recorded readin current plus 250 µA.

dividing this voltage by Rs.

ain and convert it current. Check that the two

e across Rs and convert it to

h line voltage (127

s differ less than 0.01% of output

PARD(Ripple and Noise)

Definition : The residual ac current which is superimposed

on the dc output current of a power suppl PARD is specified as the root-mean-square(rms) output current in a frequenc in CC operation.

range of 20 Hz to 20 MHz with the suppl

. Constant current

PARD(RMS) Measurement

Test Parameter:

Measured Variable: Output Current(rms) Expected Results: E3614A: Less than 5 mA rms

E3615A: Less than 2 mA rms E3616A: Less than 500 µA rms E3617A: Less than 500 µA rms

Test Procedure:

a. Connect the test equipment as shown in Fi b. Turn the suppl

trol full

c. Turn up output current to the full rated value. Check

that the CC indicator remains li RENT control if not li

d. Record rms volta

rent b

e. Check that the rms noise current is less than 5 mA

rms for E3614A, 2 mA rms for E3615A and 500 µA rms for E3616A and E3617A respectivel

's power on and turn VOLTAGE con-

clockwise.

hted. Reduce CUR-

hted.

e across Rs and convert it to cur-

dividing this voltage by Rs.

ure A-8.

CC Drift (Stability)

Definition: The chan

a 30-minute warm-up with constant input line voltage,

lowin constant load resistance and constant ambient temperature.

Test Parameter:

Measured Variable: Output Current Expected Results: Less than 0.1% plus 10 mA

Test Procedure:

a. Connect the DVM across Rs in Fi

the electronic load in constant volta its volta

b. Turn the suppl

trol full c. Turn up output current to the full rated value. d. After a 30-minute warm-up, note the volta

and convert it to current b e. The converted output current should deviate less than

0.1% plus 10 mA from the current obtained in step d

over a period of 8 hours.

e in output current for the first 8 hours fol-

ure A-4. Operate

e mode and set

e to the full rated value of the power supply.

's power on and turn VOLTAGE con-

clockwise.

e on DVM

dividing this voltage by Rs.

ADJUSTMENT AND CALIBRA TION PROCEDURE

Adjustment and calibration may be required after performance testin Perform those adjustments that affect the operation of the fault

circuit and no others. To remove the top cover, refer to

"Line Volta

Maintenance described herein is performed with power supplied to the suppl removed. Such maintenance should be performed onl hazards involved (for example, fire and electrical shock). Where maintenance can be performed without power applied, the power should be removed.

, troubleshooting, or repair and replacement.

e Option Conversion" paragraph.

, and protective covers

service-trained personnel who are aware of the

Figure A-8. CC PARD RMS Measurement Test Setup

Figure A-9. Calibration Test Setup

A-7

Ammeter and CC Set Calibration

ying

To calibrate ammeter and CC set, proceed as follows:

a. Connect test setup on Fi b. Turn VOLTAGE and CURRENT control full

wise.

c. Turn on the suppl

R5 on the displa

reads exactly DVM value divided by Rs.

pla

d. To calibrate CC Set adjust R69 on the main board

until front panel AMPS displa value divided b switch.

Rs while depressing OVP/CC Set

ure A-9.

clock-

and to calibrate ammeter adjust

board until front panel AMPS dis-

reads exactly DVM

V oltmeter and OVP Set Calibration

To calibrate voltmeter and OVP set, proceed as follows:

a. Disconnect Rs from test setup on Fi

connect DVM across output terminal of the suppl b. Turn on the suppl c. To calibrate voltmeter for E3614A, adjust R16 on the

displa

board until front panel VOLTS display reads DVM value. To calibrate voltmeter for

exactl

E3615A, E3616A and E3617A set the output volta

below 18V (ex, 15V), and adjust R16 on the displa

board until front panel VOLTS displa

DVM value. Next, set the output volta

(ex, 21V) and adjust R17 on the displa

front panel VOLTS displa d. To calibrate OVP Set, turn down the OVP Adjust

screwdriver control on the front panel slowl

OVP circuit trips. Record the output volta

OVP trip occurs. Then adjust R97 on the main board

until front panel VOLTS displa

trip volta

e while depressing OVP/CC Set switch.

reads exactly DVM value.

ure A-9 and

reads exactly

e above 20V

board until

until the

e when the

reads exactly OVP

TROUBLESHOOTING

Before attempting to troubleshoot the power supply, ensure that the fault is with the suppl cuit. The performance test enables this to be determined without havin

to remove the covers from the supply.

The applicable test points are identified by encircled numbers on the schematic dia manual, Fi Fi

ure 13.

A good understanding of the principles of operation is a helpful aid in troubleshootin ples of operation in this manual be reviewed before attemptin operation are understood, refer to the overall troubleshootin procedures paragraph to locate the symptom and probable cause.

Once the defective component has been located (b of visual inspection or trouble anal duct the performance test. After a component is replaced, perform the meter calibration.

ure A-10, Figure A-11, Figure A-12, and

to troubleshoot the supply. Once the principles of

and not with an associated cir-

rams at the rear of the

, and it is recommended that princi-

means

sis) replace it and recon-

Overall Troubleshooting Procedure

To locate the cause of trouble follow steps 1, 2, and 3 in sequence. Before attemptin that the rear-panel switches M/S 1 and M/S 2 be set to MASTER position and CV, CC, and SENSE to LOCAL position.

1. Check that input power is available, and check the power cord and rear panel line fuse. When replacin line fuse, be certain to select fuse of proper ratin line volta

2. In almost all cases, the trouble source can be caused b practice to check volta ceedin

3. Disconnect the load and examine Table A-3 to determine

e being used.

the dc bias or reference voltages; thus, it is a good

with step 3.

our symptom, then check the probable cause.

overall troubleshooting, ensure

for

es in Table A-2 before pro-

Reference and Bias Circuit

a. Make an ohmmeter check to be certain that neither

the positive and ne

b. Turn front panel VOLTAGE and CURRENT controls

clockwise.

full

c. Turn on power suppl d. Proceed as instructed in Table A-2.

ative output terminal is grounded.

(no load connected).

Regulating Loop Troubles

If the voltages in Table A-2 have been checked to eliminate the reference and bias circuits as a source of trouble; the malfunction is caused b tor feedback loop. Because the interaction between these two loops makes lo steps help you to locate the source of troubles in these two feedback loops. Once the trouble has been located to one of the feedback loops, the operation of either loop can be ana-

zed independently. This method should be followed when-

l ever a low output volta troubleshootin 4 whenever a hi

1. Turn on the power suppl and increase output volta panel volta and CV indicator is turned off at some output volta (below full rated output volta the series re normall a defect in the prere Table A-6). If the output volta and var no effect, then the trouble is probabl

ulator feedback loop. Refer to Table A-5.

2. Measure the volta on the schematic dia with full load with oscilloscope while increasin output volta a

e measured has step changes three times during 0 to full output volta ulator feedback loop is operatin not the case, the trouble is probabl tor feedback loop. Refer to Table A-6.

either the series regulator or preregula-

ical troubleshooting difficult, the followin

e condition exists. Notice that

can proceed directly as described in Table A-

h output voltage condition exists.

with full load connected

e by turning up the front

e control. The output voltage is clamped

e). If this is the case,

ulator feedback loop is operating

and the trouble condition is probably due to

ulator feedback loop (refer to

e remains in low stage,

the front panel voltage control has little or

in the series

e between TP2 and TP1 (shown

ram at the rear of the manual)

the

e from 0 to full rated voltage. The volt-

e swing. If this is the case, prereg-

normally. If this is

in the preregula-

A-8

After the trouble has been isolated to one of the feedback

loops, troubleshootin 4, A-5, or A-6.

Series Re

the series regulating loop, it is useful to open the loop since measurements made an appear abnormal. With a loop closed, it is very difficult to separate cause from effect. As described in Tables A-4 and A-5, the conduction or cutoff capabilit

shorting or opening a previous stage, as follows:

Althou somewhere near its mid-point, and then perform successive subdividin

ulating Feedback Loop. When troubleshootin

1. Shortin lates saturation, or the full ON condition.

2. Shortin and simulates an open circuit between emitter and collector.

h a logical first choice might be to break the loop

tests, it is more useful to trace the loop from the

can proceed as described in Tables A-

where within a closed loop ma

of each stage is checked

the emitter to collector of a transistor simu-

the emitter to base of a transistor cuts it off,

Table A-2. Reference and Bias Circuit Troubleshootin

series re ures occur more often at the hi

Prere

loop (SCR control circuit) can be convenientl Table A-6. As indicated in Table A-6, the control circuit is checked b (shown on the schematic dia backwards from this point.

ulator backwards a stage at a time, since loop fail-

her power levels.

ulator Feedback Loop. The preregulator feedback

checked usin

starting with the waveform at point 7 and point 6

ram) and tracing forwards and

Overvoltage Protection Circuit Troubles

When troubleshooting the overvoltage protection circuit, it is useful to check the turn-on overshoot control circuit which includes U20 and Q10. The function of the control circuit is to slow down the risin power is turned on. This function prevents the suppl false OVP trippin the troubles has been isolated to overvolta cuit, troubleshootin

speed of the +15 V bias the moment the

from

the moment the power is turned on. After

e protection cir-

can proceed as described in Table A-7.

METER

COMMON

TP6 point 2 +15.0 +/- 0.3 Vdc 2 mV Check U13, CR31, and CR32. TP6 point 4 -12.0 +/- 0.3 Vdc 2 mV Check +15 V bias or U14. TP6 TP7 +10.5 +/- 0.2 Vdc 2 mV Check +15 V bias, U11, and U14. TP6 point 3 -5.1 +/- 0.5 Vdc 2 mV Check -12 V bias or VR1. TP6 point 5 +5.0 +/- 0.3 Vdc 4 mV Check U1 and CR2.

METER

POSITIVE

NORMAL INDICATION NORMAL RIPPLE

(p-p)

PROBABLE CAUSE

Table A-3. Overall Troubleshootin

SYMPTOM CHECKS AND PROBABLE CAUSES

High Output Voltage a. Check series regulator feedback loop or preregulator feedback loop.

b. Refer to "Re

Low and No Output Volta

h Ripple a. Check operating setup for ground loops.

e a. If output is zero, check fuse.

b. Check series re

Refer to "Re

c. Check CR20 shorted.

b. If output floatin c. Ensure that the suppl

under loaded conditions. d. Check for low volta e. Check for excessive ripple on reference volta

ulating Loop Troubles" paragraph or Table A-4 or A-6 as instructed.

ulator feedback loop or preregulator loop.

ulating Loop Troubles" paragraph or Table A-5 or A-6 as instructed.

, connect 1 µF capacitor between output and ground.

is not crossing over to constant current mode

e across C7 or Q1 and Q4.

es (Table A-2).

Poor Line Re (Constant Volta

ulation

a. Check +10 V reference volta b. Check U9.

A-9

SYMPTOM CHECKS AND PROBABLE CAUSES

Poor Load Regulation (Constant Volta

Table A-3. Overall Troubleshooting (Cont’d)

a. Refer to "Measurements Techniques" para b. Check +10 V reference volta c. Ensure that the suppl

is not going into current limit.

raph.

Poor Load Re (Constant Current)

Oscillates (Constant Volta Constant Current)

Poor Stabilit (Constant Volta

Poor Stabilit (Constant Current)

Excessive heat a. Check prere

OVP Shutdown a. Check that the front panel OVP Adjust screw control is rotated full

ulation

a. Check +10 V reference voltage. b. CR1, CR19, CR20, C2, C31 leak c. Ensure that the suppl

a. Check C29 and C36 in constant voltage circuit. b. Check C31 and C33 in constant current circuit.

a. Check +10 V reference volta b. CR27, CR28, CR23, and CR26 leak c. U9 defective. d. Nois

a. Check +10 V reference volta b. CR24, CR25, CR29, and CR30 leak c. U9 and U10 defective. d. Nois

b. CR10, CR12, CR15, and CR18 short

b. Check the overvolta

programming resistor R83.

programming resistor R85.

ulator control circuit. Refer to Table A-6.

Refer to "Overvolta

is not crossing over to constant voltage operation.

e protection circuit.

e Protection Circuit Troubles" paragraph or Table A-7.

clockwise.

Table A-4. High Output Voltage Troubleshootin

STEP ACTION RESPONSE PROBABLE CAUSE

1 Check turn off of Q1 and

Q4 b

shorting Q9 emitter

to collector.

a. Output volta b. Output volta

e remains high. e decreases.

a. Q1 or Q4 shorted. b. Remove short and proceed to step 2.

2 Check turn on of Q9 b

shortin

point 1 to -12 V.

3 Check volta

to pin 6 of U9.

e from pin 5

a. Output volta b. Output volta

a. Input voltage is positive. b. Input volta

e remains high. e decreases.

e is negative.

a. Q9 open. b. Remove short and proceed to step 3.

a. U9B is defective. b. Turn down the voltage control fully

counter clockwise. Check the volta of U9 pin 1 is 0.

Table A-5. Low Output Voltage Troubleshootin

STEP ACTION RESPONSE PROBABLE CAUSE

1 Check turn on of Q1 and

Q4 b

disconnecting emitter

of Q9.

2 Check turn off of Q9 b

3 Eliminate constant current

point 1 to +15 V.

shortin

comparator as a source of trouble b anode of CR22.

disconnecting

a. Output volta b. Output volta

e remains low. e increases.

e is increases. e remains low.

A-10

a. Q1 or Q4 open. b. Reconnect emitter lead and proceed to step 2.

a. Q9 shorted. b. Remove short and proceed to step 3.

a. Proceed to step 4. b. Reconnect lead and proceed to step 5.

Table A-5. Low Output Voltage Troubleshooting (Cont’d)

STEP ACTION RESPONSE PROBABLE CAUSE

4 Check voltage from pin 13 to

pin 12 of U9.

a. Measured voltage is positive. b. Measured volta

e is negative.

a. Check U9A is defective. b. Check U10 and U9D is defective.

Check R85 is open.

5 Check volta

to pin 5 of U9.

e from pin 6

a. Measured voltage is positive. b. Measured volta

e is negative.

a. U9B is defective. b. Check U9C is defective.

Table A-6. Preregulator/Control Circuit Troubleshootin

STEP MEASURE RESPONSE PROBABLE CAUSE

1 Set output voltage to 4.5 V +- 0.5 V for E3614A.

Set output volta Set output volta Set output volta

2 E3614A

E3615A

E3616A Volta

3 Volta

4 Volta

5 Volta

e from TP6(common) to

U4 pin 1

e from TP6(common) to

U5 pin 1

e from pin 6 to

pin 7 of U5

e to 10 V +- 1 V for E3615A. e to 15 V +- 1 V for E3616A. e to 26 V +- 5 V for E3617A.

Waveform form from TP6(common) to point 6

e from TP6

(common) to point 6

a. Normal firin

b. No firin a. High voltage (+0.7 V)

b. Low volta a. Low voltage (-12 V)

h voltage (+5 V)

b. Hi a. High voltage (+15 V)

b. Low volta a. Measured voltage is positive.

b. Measured volta

pulse

e (0 V)

e (-12 V)

e is negative.

a. Check CR18, CR15, Q7, Q8

for defective.

b. Proceed to step 3. a. CR15, CR18, U2, U21

defective

b. Proceed to step 3. a. U3 defective

b. Proceed to step 4. a. U4 defective

b. Proceed to step 5. a. U5 defective

b. U6 defective

6 Set output volta

Set output volta Set output volta Set output volta

7 Waveform form from TP6

(common) to point 7

8 Volta

9 Volta

10 Volta

e from TP6(common)

to U4 pin 14

e from TP6(common)

to U5 pin 14

e from pin 8 to

pin 9 of U5

e to 7 V +- 1 V for E3614A. e to 16 V +- 2 V for E3615A. e to 25 V +- 2 V for E3616A. e to 44 V +- 5 V for E3617A.

a. Normal firin

b. No firin a. Low voltage (-12 V)

h voltage (+5 V)

b. Hi a. High voltage (+15 V)

b. Low volta a. Measured voltage is positive.

b. Measured volta

pulse

e (-12 V)

e is negative.

A-11

a. CR10, CR12, Q5, Q6

defective

b. Proceed to step 8. a. U3 defective

b. Proceed to step 9. a. U4 defective

b. Proceed to step 10. a. U5 defective

b. U6 defective

Table A-7. Overvoltage Protection Circuit Troubleshooting

STEP ACTION RESPONSE PROBABLE CAUSE

1 Short U19 pin 4 to TP6. a. Shutdown release

(OVP indicator OFF)

b. Output voltage remains

shutdown(0 V)

a. U20 defective or C57

shorted.

b. Proceed to step 2.

2 Measure the voltage from

TP6(common) to TP9.

3 Measure the voltage from

TP6(common) to TP8.

REPLACEABLE PARTS

INTRODUCTION

This section contains information for ordering replacement parts. Table A-10 lists parts by reference designators and provides the following information:

a. Reference designators. Refer to Table A-8. b. Agilent Technologies Part Number. c. Total quantity used in that assembly. d. Description. e. Manufacturer's supply code number. Refer to Table

A-9 for manufacturer's name and address.

f. Manufacturer's part number or ty pe.

Mechanical and miscellaneous parts are not identified by reference designator.

a. High voltage (+5 V) b. Low voltage (0 V)

a. Below +2.6 V b. Above +2.6 V

A Assembly C Capacitor CR Diode DS Signaling Device(light) FFuse G Pulse Generator JJack L Inductor Q Transistor RResistor SSwitch T Transformer TP Test Point VR Zener Diode U Integrated Circuit WWire

a. U19 defective or proceed step 3. b. U4D defective.

a. U12 or U8 defective b. U18 defective

Table A-8. Reference Designators

ORDERING INFORMATION

To order a replacement part, address order or inquiry to your local Agilent Technologies sales office (see lists at rear of this manual for addresses). Specify the following information for each part: Model, complete serial number of the power supply; Agilent Technologies part number; circuit reference designator; and description.

Table A-9. Code List of Manufacturers

CODE MANUFACTURER ADDRESS

01295 Texas Instruments Inc, Semicon Comp Div. Dallas, TX

14936 General Instruments Corp, Semicon Prod Hicksville, N.Y.

27014 National Semiconductor Corporation Santa Clara, CA

28480 Agilent Technologies Palo Alto, CA

04713 Motorola Semiconductor Products Phoenix, AZ

32997 Bourns Inc. Riverside, CA

34371 Harris Corp. Melbourne, FL

A-12

Table A-10. Replaceable Parts List

Reference Designator Agilen Part

Number

E3614A 1 60W BENCH POWER SUPPLY - E3614A MODEL

E3615A 1 60W BENCH POWER SUPPLY - E3615A MODEL

E3616A 1 60W BENCH POWER SUPPLY - E3616A MODEL

E3617A 1 60W BENCH POWER SUPPLY - E3617A MODEL

E3614-60005 1 MAIN BODY ASSY 14 28480

E3615-60005 1 MAIN BODY ASSY 15 28480

E3616-60005 1 MAIN BODY ASSY 16 28480

E3617-60005 1 MAIN BODY ASSY 17 28480

0371-3806 1 KEY CAP - WHT ALL 28480

0371-8624 1 KEY CAP - GRAY ALL 28480

E361X-60003 1 FRONT PANEL ASSY ALL 28480

E361X-60009 1 DISPLAY BOARD ASSY ALL 28480

R84,85 2100-4503 2 RES-VAR 10K 5% 10-TURN WW ALL 3590S-A17-103 32997

E3631-20011 1 BINDING POST RED ALL 28480

E3631-20012 1 BINDING POST BLACK ALL 28480

E3631-20013 1 BINDING POST GREEN ALL 28480

2950-0144 3 NUT- BINDING POST ALL 28480

5041-8621 2 KNOB ALL 28480

E3614-60002 1 MAIN BOARD ASSY 14 28480

E3615-60002 1 MAIN BOARD ASSY 15 28480

E3617-60002 1 MAIN BOARD ASSY 16 28480

E3617-60002 1 MAIN BOARD ASSY 17 28480

5021-8128 1 PCB MAIN FOR E3614A,E3615A 14,15 28480

5021-8139 1 PCB MAIN FOR E3616A,E3617A 16,17 28480

C1,3,47 0160-4835 3 CAP-FXD .1UF +-10% 50V CER X7R ALL 28480

C2 0180-4360 1 CAP-FXD 1000UF 25V +-20% AL-ELECTLT 14 28480

C2 0180-4355 1 CAP-FXD 470UF 50V +-20% AL-ELECTLT 15 28480

C2 0180-4452 1 CAP-FXD 330UF 63V +-20% AL-ELECTLT 16 28480

C2 0180-3595 1 CAP-FXD 220UF 100V +-20% AL-ELECTLT 17 28480

C4,5 0160-0269 2 CAP-FXD 0.1UF +-20% 500V CER Z5U ALL 28480

C6 0180-3990 1 CAP-FXD 4700UF +-20% 25V AL-ELECTLT ALL 28480

C7,8 0180-4567 2 CAP-FXD 39000UF 25V +-20% AL-ELECTLT 14 28480

C7,8 0180-4568 2 CAP-FXD 12000UF 63V +-20% AL-ELECTLT 15 28480

C7,8 0180-4607 2 CAP-FXD 5600UF 100V +-20% AL-ELECTLT 16 28480

C7,8 0180-4566 2 CAP-FXD 2700UF 160V +-20% AL-ELECTLT 17 28480

C9,41,42,43,55 0180-3970 5 CAP-FXD 1UF +-20% 50V AL-ELECTLT ALL 28480

C10,48,49 0160-7449 3 CAP-FXD 0.33UF +-10% 50V POLYE-FL ALL 28480

C11,16,17,25,26 0160-4832 5 CAP-FXD 0.01UF +-10% 100V CER X7R 14,15 28480

C12 0160-4835 1 CAP-FXD .1UF +-10% 50V CER X7R 14,15 28480

C13,14,15,30,32, 0160-4832 10 CAP-FXD 0.01UF +-10% 100V CER X7R ALL 28480 34,38,39,50,54

Q'ty Description Model Mfr. P/N Mfr.

Code

A-13

Table A-10. Replaceable Parts List (Cont'd)

Reference Designator Agilent Part

C18,21,24,27 0160-7077 4 CAP-FXD .1UF +-10% 630V POLYE-FL 14,15 28480

C19,22 0160-4822 2 CAP-FXD 1000PF +-5% 100V CER COG 14,15 28480

C20,23 0180-3970 2 CAP-FXD 1UF +-20% 50V AL-ELECTLT 14,15 28480

C28 0160-6225 1 CAP-FXD 0.33UF +-10% 250V POLYE-MET ALL 28480

C29 0160-4832 1 CAP-FXD 0.01UF +-10% 100V CER X7R 14,15 28480

C29 0160-7673 1 CAP-FXD .047UF +-10% 100V POLYP-MET 16,17 28480

C31 0160-7075 1 CAP-FXD 4700PF +-2% 50V POLYP-FL ALL 28480

C33,35,44,45,46, 56

C36 0160-7548 1 CAP-FXD 2200PF +-10% 50V CER Y5P ALL 28480

C37 0160-4801 1 CAP-FXD 100PF +-5% 100V CER COG ALL 28480

C40 1 CAP-FXD .047UF +-10% 100V POLYP-MET ALL 28480

C52 0180-4085 1 CAP-FXD 330UF +-20% 35V AL-ELECTLT ALL 28480

C53 0180-4355 1 CAP-FXD 470UF 50V +-20% AL-ELECTLT ALL 28480

C57 0180-4437 1 CAP-FXD 47UF +-20% 50V AL-ELECTLT ALL 28480

C58 0160-4065 1 CAP-FXD 0.1UF +-20% 250V PPR-MET ALL 28480

C59,60 0160-7049 2 CAP-FXD 4700PF +-20% 250V CER X5V ALL 28480

C61 0160-7363 1 CAP-FXD 1UF +-10% 250V POLYP-MET 16,17 28480

C62 0160-4808 1 CAP-FXD 470PF +-5% 100V CER COG 16,17 28480

C63,64,65,66 0160-0301 4 CAP-FXD 0.012UF +-10% 200V PE-FL 17 28480

R1,2 0811-3478 2 RESISTOR 0.1 +-1% 5W PWN TC=0+-90 14 28480

R1,2 0811-3839 2 RESISTOR 0.2 +-1% 5W PWN TC=0+-90 15 28480

R1,2 0811-3864 2 RESISTOR 0.6 +-5% 5W PWN TC=0+-90 16 28480

R1,2 0811-3861 2 RESISTOR 1.78 +-1% 5W PWN TC=0+-90 17 28480

R3,7,21,22,105, 0698-3160 6 RESISTOR 31.6K +-1% .125W TF TC=0+-100 ALL 28480 106

R4,71,73,76,112 0757-0465 5 RESISTOR 100K +-1% .125W TF TC=0+-100 ALL 28480

R5,6,80 0757-0401 3 RESISTOR 100 +-1% .125W TF TC=0+-100 ALL 28480

R8,9,12 0757-0280 3 RESISTOR 1K +-1% .125W TF TC=0+-100 14,15 28480

R8,9 0761-0021 2 RESISTOR 1K +-5% 1W TF TC=0+-100 16,17 28480

R10,108 0699-2715 2 RESISTOR-FUSE 1OHM +-5%; 0.5W @70 ALL 28480

R11 0811-1806 1 RESISTOR 2K +-5% 3W PWI 20PPM 14 28480

R11 0811-2188 1 RESISTOR 5K +-5% 3W PWI 20PPM 15 28480

R11 0764-0007 1 RESISTOR 27K +-5% 2W MO TC=0+-200PPM 16 28480

R11 0699-3105 1 RESISTOR 45K +-5% 2W MO TC=0+-500PPM 17 28480

R13 0757-0461 1 RESISTOR 68.1K +-1% .125W TF TC=0+-100 14,15 28480

R14,48,52 0698-3157 3 RESISTOR 19.6K +-1% .125W TF TC=0+-100 14,15 28480

R15 0757-0442 1 RESISTOR 10K +-1% .125W TF TC=0+-100 14,15 28480

R16 0757-0465 1 RESISTOR 100K +-1% .125W TF TC=0+-100 14,15 28480

R17,18,66,78,110, 123

R19,113 0698-0083 2 RESISTOR 1.96K +-1% .125W TF TC=0+-100 ALL 28480

R20,23 0757-0463 2 RESISTOR 82.5K +-1% .125W TF TC=0+-100 ALL 28480

Number

0160-4822 6 CAP-FXD 1000PF +-5% 100V CER COG ALL 28480

0160-7673

0757-0280 6 RESISTOR 1K +-1% .125W TF TC=0+-100 ALL 28480

Q'ty Description Model Mfr. P/N Mfr.

Code

A-14

Table A-10. Replaceable Parts List (Cont'd)

Reference Designator Agilent Part

R24,26,27,37,38, 64,88,117,120

R25,30,33 0698-8824 3 RESISTOR 562K +-1% .125W TF TC=0+-100 ALL 28480

R28,111 0698-3228 2 RESISTOR 49.9K +-1% .125W TF TC=0+-100 ALL 28480

R29,68,86,89,91, 0698-3162 11 RESISTOR 46.4K +-1% .125W TF TC=0+-100 ALL 28480 92,95,96,99,114, 121

R31,32,35

R34 0757-0288 1 RESISTOR 9.09K +-1% .125W TF TC=0+-100 ALL 28480

R36 0698-3518 1 RESISTOR 7.32K +-1% .125W TF TC=0+-100 14 28480

R36 0757-0439 1 RESISTOR 6.81K +-1% .125W TF TC=0+-100 15 28480

R36 0757-0441 1 RESISTOR 8.25K +-1% .125W TF TC=0+-100 16 28480

R36 0698-8580 1 RESISTOR 9.53K +-1% .125W TF TC=0+-100 17 28480

R39 0757-0440 1 RESISTOR 7.5K +-1% .125W TF TC=0+-100 14 28480

R39 0698-4471 1 RESISTOR 7.15K +-1% .125W TF TC=0+-100 15 28480

R39 0698-3498 1 RESISTOR 8.66K +-1% .125W TF TC=0+-100 16 28480

R39 0757-0442 1 RESISTOR 10K +-1% .125W TF TC=0+-100 17 28480

R40 0757-0431 1 RESISTOR 2.43K +-1% .125W TF TC=0+-100 14 28480

R40 0698-4438 1 RESISTOR 3.09K +-1% .125W TF TC=0+-100 15 28480

R40 0698-0063 1 RESISTOR 5.23K +-1% .125W TF TC=0+-100 16 28480

R40 0757-0439 1 RESISTOR 6.81K +-1% .125W TF TC=0+-100 17 28480

R41 0698-4473 1 RESISTOR 8.06K +-1% .125W TF TC=0+-100 14 28480

R41 0757-0454 1 RESISTOR 33.2K +-1% .125W TF TC=0+-100 15 28480

R41 0698-4503 1 RESISTOR 66.5K +-1% .125W TF TC=0+-100 16 28480

R41 0757-0467 1 RESISTOR 121K +-1% .125W TF TC=0+-100 17 28480

R42,44,54,56 0757-0346 4 RESISTOR 10 +-1% .125W TF TC=0+-100 14,15 28480

R42,44,54,56 0698-3438 4 RESISTOR 147 +-1% .125W TF TC=0+-100 16,17 28480

R43,55 0757-0293 2 RESISTOR 1.96K +-1% .125W TF TC=0+-100 16,17 28480

R43,45,55,57 0757-0401 4 RESISTOR 100 +-1% .125W TF TC=0+-100 14,15 28480

R46,53 0757-0489 2 RESISTOR 10 +-1% .25W TF TC=0+-100 14,15 28480

R47,50 0698-4123 2 RESISTOR 499 +-1% .125W TF TC=0+-100 14,15 28480

R49,51 0757-0293 2 RESISTOR 1.96K +-1% .125W TF TC=0+-100 14,15 28480

R58,59 0811-3909 2 RESISTOR 0.2 +-1% 10W PWN TC=0+-90 14 28480

R58 0811-3909 1 RESISTOR 0.2 +-1% 10W PWN TC=0+-90 15 28480

R58 0811-4118 1 RESISTOR 0.6 +-1% 10W PWN TC=0+-90 16 28480

R58,59 0811-3861 2 RESISTOR 1.78 +-1% 5W PWN TC=0+-90 17 28480

R60 0811-1799 1 RESISTOR 390 +-5% 3W PWI TC=0+-20 14 28480

R60 0813-0001 1 RESISTOR 1K +-5% 3W PWI TC=0+-20 15 28480

R60 0811-0071 1 RESISTOR 1.52K +-5% 3W PWI TC=0+-20 16 28480

R60 0811-1808 1 RESISTOR 2.6K +-5% 3W PWI TC=0+-20 17 28480

R61 0698-0085 1 RESISTOR 2.61K +-1% .125W TF TC=0+-100 ALL 28480

R62 0698-7634 1 RESISTOR 42.2K +-1% .125W TF TC=0+-100 14 28480

R62 0698-4514 1 RESISTOR 105K +-1% .125W TF TC=0+-100 15 28480

R62 0757-0481 1 RESISTOR 475K +-1% .125W TF TC=0+-100 16

Number

0757-0442 9 RESISTOR 10K +-1% .125W TF TC=0+-100 ALL 28480

0698-0084 3 RESISTOR 2.15K +-1% .125W TF TC=0+-100 ALL 28480

Q'ty Description Model Mfr. P/N Mfr.

Code

28480

A-15

Table A-10. Replaceable Parts List (Cont'd)

Reference Designator Agilent Part

Number

R62 0698-8826 1 RESISTOR 825K +-1% .125W TF TC=0+-100 17 28480

R63 0698-8827 1 RESISTOR 1M +-1% .125W TF TC=0+-100 ALL 28480

R65 0757-0274 1 RESISTOR 1.21K +-1%.125W TF TC=0+-100 ALL 28480

R67 0757-0438 1 RESISTOR 5.11K +-1% .125W TF TC=0+-100 ALL 28480

R69 2100-4306 1 RESISTOR-TRMR 50K 10% TKF TOP-ADJ 25-T ALL 3296Y-1-503 32997

R70 0698-3243 1 RESISTOR 178K +-1% .125W TF TC=0+-100 14 28480

R70 0698-3459 1 RESISTOR 383K +-1% .125W TF TC=0+-100 15 28480

R70 0698-3158 1 RESISTOR 23.7K +-1% .125W TF TC=0+-100 16 28480

R70 0757-0465 1 RESISTOR 100K +-1% .125W TF TC=0+-100 17 28480

R72 0757-0289 1 RESISTOR 13.3K +-1% .125W TF TC=0+-100 14 28480

R72 0757-0290 1 RESISTOR 6.19K +-1% .125W TF TC=0+-100 15 28480

R72 0757-0458 1 RESISTOR 51.1K +-1% .125W TF TC=0+-100 16 28480

R72 0698-8123 1 RESISTOR 26.1K +-1% .125W TF TC=0+-100 17 28480

R74,75 0757-0444 2 RESISTOR 12.1K +-1% .125W TF TC=0+-100 14,15 28480

R74,75 0698-3245 2 RESISTOR 20.5K +-1% .125W TF TC=0+-100 16 28480

R74,75 0698-3136 2 RESISTOR 17.8K +-1% .125W TF TC=0+-100 17 28480

R77 0698-3430 1 RESISTOR 21.5 +-1% .125W TF TC=0+-100 14,15 28480

R77 0757-0395 1 RESISTOR 56.2 +-1% .125W TF TC=0+-100 16,17 28480

R79 0698-4767 1 RESISTOR 147K +-1% .125W TF TC=0+-100 14 28480

R79 0698-3460 1 RESISTOR 422K +-1% .125W TF TC=0+-100 15 28480

R79 0698-8825 1 RESISTOR 681K +-1% .125W TF TC=0+-100 16 28480

R79 0698-8827 1 RESISTOR 1M +-1% .125W TF TC=0+-100 17 28480

R81,122 0698-3157 2 RESISTOR 19.6K +-1% .125W TF TC=0+-100 ALL 28480

R82 0698-8123 1 RESISTOR 26.1K +-1% .125W TF TC=0+-100 14,15 28480

R82 0757-0461 1 RESISTOR 68.1K +-1% .125W TF TC=0+-100 16,17 28480

R83,119 0757-0440 2 RESISTOR 7.5K +-1% .125W TF TC=0+-100 ALL 28480

R87 0698-3444 1 RESISTOR 316 +-1% .125W TF TC=0+-100 ALL 28480

R90 0757-0346 1 RESISTOR 10 +-1% .125W TF TC=0+-100 ALL 28480

R93 0698-3581 1 RESISTOR 13.7K +-1% .125W TF TC=0+-100 ALL 28480

R94 2100-4357 1 RESISTOR-VAR 10K +-10% ALL 52UAL-T22-A15 32997

R97 2100-4305 1 RESISTOR-TRMR 10K 10% TKF TOP-ADJ 25-T ALL 3296Y-1-103 32997

R98 0698-3455 1 RESISTOR 261K +-1% .125W TF TC=0+-100 14 28480

R98 0757-0465 1 RESISTOR 100K +-1% .125W TF TC=0+-100 15 28480

R98 0757-0461 1 RESISTOR 68.1K +-1% .125W TF TC=0+-100 16 28480

R98 0698-3160 1 RESISTOR 31.6K +-1% .125W TF TC=0+-100 17 28480

R100 0698-4123 1 RESISTOR 499 +-1% .125W TF TC=0+-100 ALL 28480

R101 0698-3441 1 RESISTOR 215 +-1% .125W TF TC=0+-100 ALL 28480

R102 0698-3438 1 RESISTOR 147 +-1% .125W TF TC=0+-100 ALL 28480

R103 0757-0428 1 RESISTOR 1.62K +-1% .125W TF TC=0+-100 ALL 28480

R104,107 0698-3156 2 RESISTOR 14.7K +-1% .125W TF TC=+-100 ALL 28480

R109 0698-3153 1 RESISTOR 3.83K +-1% .125W TF TC=0+-100 ALL 28480

R115 0757-0462 1 RESISTOR 75K +-1% .125W TF TC=0+-100 14 28480

Q'ty Description Model Mfr. P/N Mfr.

Code

A-16

Table A-10. Replaceable Parts List (Cont'd)

Reference Designator Agilent Part

Number

R115 0757-0463 1 RESISTOR 82.5K +-1% .125W TF TC=0+-100 15 28480

R115 0757-0462 1 RESISTOR 75K +-1% .125W TF TC=0+-100 16 28480

R115 0757-0461 1 RESISTOR 68.1K +-1% .125W TF TC=0+-100 17 28480

R116 0698-4489 1 RESISTOR 28K +-1% .125W TF TC=0+-100 14 28480

R116 0698-3161 1 RESISTOR 38.3K +-1% .125W TF TC=0+-100 15,16 28480

R116 0698-4494 1 RESISTOR 35.7K +-1% .125W TF TC=0+-100 17 28480

R118 0698-8678 1 RESISTOR 178 +-1% .125W TF TC=0+-100 ALL 28480

R124 0698-8812 1 RESISTOR 1 +-1% .125W TF TC=0+-100 16,17 28480

R125 0698-8825 1 RESISTOR 681K +-1% .125W TF TC=0+-100 16,17 28480

R126 0757-0401 1 RESISTOR 100 +-1% .125W TF TC=0+-100 ALL 28480

U1 1826-0144 1 IC V RGLTR-FXD-POS 4.8/5.2V TO-220 PKG ALL MC7805CT 04713

U2 1826-0346 1 IC OP AMP GP DUAL 8 PIN DIP-P 14,15 LM358N 27014

U3,16,20 1826-0412 3 IC COMPARATOR PRCN DUAL 8 PIN DIP-P ALL LM393N 27014

U4,5 1826-0138 2 IC COMPARATOR GP QUAD 14 PIN DIP-P ALL LM339 27014

U6,9 1826-0665 2 IC OP AMP LOW-BIAS-H-IMPD QUAD 14 PIN ALL LF347BN 27014

U7,15,17 1826-1297 3 IC V RGLTR-V-REF-FXD 4.8/5.2V TO-92 PKG ALL LM336BZ-5.0 27014

U8 1990-1659 1 OPTO-ISOLATOR LED-TRIAC IF=100MA-MAX ALL MCP3020Z 14936

U10 1826-1702 1 IC OP AMP PRCN 8 PIN DIP-P ALL 28480

U11 1826-1075 1 IC OP AMP GP DUAL 8 PIN DIP-P ALL LF442CN 27014

U12 1826-0468 1 IC V RGLTR-OV-V-SEN 2.3/37.8V 8-DIP-P ALL MC3423P1 04713

U13 1826-0393 1 IC V RGLTR-ADJ-POS 1.2/37V TO-220 PKG ALL LM317T 27014

U14 1826-0221 1 IC V RGLTR-FXD-NEG -11.5/-12.5V TO-220 ALL MC7912CT 04713

U18 1826-0346 1 IC OP AMP GP DUAL 8 PIN DIP-P ALL LM358N 27014

U19 1820-1197 1 IC GATE TTL/LS NAND QUAD 2-INP ALL SN74LS00N 01295

U21,22,23,24 1990-1659 4 OPTO-ISOLATOR LED-TRIAC IF=100MA-MAX 16,17 MCP3020Z 14936

Q1,4 1855-0989 2 TRANSISTOR MOSFET N-CHAN E-MODE TO 247AC 14,15 IRFP044 28480

Q1,4 1855-0536 2 TRANSISTOR MOSFET N-CHAN E-MODE TO-3 SI 16,17 28480

Q2,3,10,11 1854-0477 4 TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW ALL 2N2222A 04713

Q5,6,7,8 1854-0477 4 TRANSISTOR NPN 2N2222A SI TO-18 PD=500MW 14,15 2N2222A 04713

Q6,7 1853-0281 2 TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW 16,17 2N2907A 04713

Q9 1853-0041 1 TRANSISTOR PNP SI TO-39 PD=1W FT=60MHZ ALL MM5007 04713

CR1,19 1901-1273 2 DIODE-PWR RECT 100V 6A 35NS ALL FE6B 14936

CR2 1906-0284 1 DIODE-FW BRIDGE 100V 1A ALL DF01 14936

CR3,4,5,6,7 1901-0033 5 DIODE-GEN PRP 180V 200MA DO-35 14,15 1N645 27014

CR8,9,16,17,31,32 1901-1149 6 DIODE-PWR RECT 400V 1A 50NS DO-41 ALL UF4004 14936

CR10,12,15,18,20 1884-0332 5 THRYSTER-SCR TO-220AB VRRM=200V ALL MCR264-4 04713

CR11,14 1901-1149 2 DIODE-PWR RECT 400V 1A 50NS DO-41 14,15 UF4004 14936

CR13 1906-0400 1 DIODE-BRIDGE 600V 6A ALL GBU8J 14936

Q'ty Description Model Mfr. P/N Mfr.

Code

A-17

Table A-10. Replaceable Parts List (Cont'd)

Reference Designator Agilent Part

CR21,22,23,24,25, 26,27,28,29,30

VR1,2,3 1902-0579 3 DIODE-ZNR 5.1V 5% PD=1W IR=10UA ALL 1N4733APL 04713

RT1,2 0837-0261 2 DIODE-VARISTOR ALL V275LA20A 34371

C67 0160-0263 1 CAP-FXD 0.22uF +-20% 50V CER ALL

T1 9100-5068 1 TRANSFORMER-POWER 14 28480

T1 9100-5069 1 TRANSFORMER-POWER 15 28480

T1 NO P/N 1 TRANSFORMER-POWER 16 28480

T1 9100-5070 1 TRANSFORMER-POWER 17 28480

T2,3 9100-4969 2 TRANSFORMER-PULSE; PRI IND:5MH 14,15 28480

L1 9170-0894 1 CORE-SHIELDING BEAD ALL 28480

J1 1252-4159 1 CONNECTOR-POST TYPE 2.5-PIN-SPCG 11-CO-NTALL 28480

TP1-16 0360-2359 16 TERMINAL-TEST POINT .230IN ABOVE ALL 28480

S1,2,3,4 3101-3237 4 SWITCH-SL SPDT SUBMIN 6A 250VAC ALL 28480

S5 3101-3238 1 SWITCH-SL DPDT SUBMIN 6A 250VAC ALL 28480

S6 3101-1914 1 SWITCH-SL 2-DPDT STD 1.5A 250VAC PC ALL 28480

S7 3101-3115 1 SWITCH-PB MOM .5A 250VAC ALL 28480

S8 3101-3083 1 SWITCH-PB DPSTALTNG 6A 250VAC ALL 28480

Number

1901-0033 10 DIODE-GEN PRP 180V 200MA DO-35 ALL 1N645 27014

0360-2548 3 TERMINAL BLOCK ALL 28480

0360-2545 1 TERMINAL BLOCK ALL 28480

0360-2546 9 TERMINAL BLOCK ALL 28480

0360-2547 1 TERMINAL BLOCK ALL 28480

Q'ty Description Model Mfr. P/N Mfr.

Code

MAGNETIC DEVICE

MISCELLANEOUS

A-18

Table A-11. Component Value

Component Model

E3614A E3615A E3616A E3617A

C2 1000UF 25V +-20% AL-ELECTLT 470UF 50V +-20% AL-ELECTLT 330UF 50V +-20% AL-ELECTLT 220UF 100V +-20% AL-ELECTLT

C7,8 39000UF 25V +-20% AL-ELECTLT 12000UF 63V +-20% AL-ELECTLT 5600UF 100V +-20% AL-ELECTLT 2700UF 160V +-20% AL-ELECTLT

C11,16,17,25,26 0.01UF 100V +-10% CER X7R 0.01UF 100V +-10% CER X7R

C12 0.1UF 50V +-10% CER X7R 0.1UF 50V +-10% CER X7R

C18,21,24,27 0.1UF 630V +-10% POLYE-FL 0.1UF 630V +-10% POLYE-FL

C19,22 1000PF 100V +-5% COG 1000PF 100V +-5% COG

C20,23 1UF 50V +-20% AL-ELECTLT 1UF 50V +-20% AL-ELECTLT

C29 0.01UF 100V +-10% CER X7R 0.01UF 100V +-10% CER X7R 0.047UF 100V +-10% POLYP-MET 0.047UF 100V +-10% POLYP-MET

C61 1UF +-10% 250V POLYP-MET 1UF +-10% 250V POLYP-MET

C62 470PF +-5% 100V CER COG 470PF +-5% 100V CER COG

C63,64,65,66 0.012UF +-10% 200V PE-FL

R1,2 0.1 +-1% 5W 0.2 +-1% 5W 0.6 +-5% 5W 1.78 +-1% 5W

R8,9 1K 1% .125W 1K 1% .125W 1K +-5% 1W 1K +-5% 1W

R11 2K +-5% 3W 5K +-5% 3W 27k +-5% 2W 45K +-5% 2W

R12 1K +-1% .125W 1K +-1% .125W

R13 68.1K +-1% .125W 68.1K +-1% .125W

R14,48,52 19.6K +-1% .125W 19.6K +-1% .125W

R15 10K +-1% .125W 10K +-1% .125W

R16 100K +-1% .125W 100K +-1% .125W

R36 7.32K +-1% .125W 6.81K +-1% .125W 8.25K +-1% .125W 9.53K +-1% .125W

R39 7.5K +-1% .125W 7.15K +-1% .125W 8.66K +-1% .125W 10K +-1% .125W

R40 2.43K +-1% .125W 3.09K +-1% .125W 5.23K +-1% .125W 6.81K +-1% .125W

R41 8.06K +-1% .125W 33.2K +-1% .125W 66.5K +-1% .125W 121K +-1% .125W

R42,44,54,56 10 +-1% .125W 10 +-1% .125W 147 +-1% .125W 147 +-1% .125W

R43,55 100 +-1% .125W 100 +-1% .125W 1K +-1% .125W 1K +-1% .125W

R45,57 100 +-1% .125W 100 +-1% .125W

R46,53 10 +-1% .25W 10 +-1% .25W

R47,50 499 +-1% .125W 499 +-1% .125W

R49,51 1.96K +-1% .125W 1.96K +-1% .125W

R58 0.2 +-1% 10W 0.2 +-1% 10W 0.6 +-1% 10W 1.78 +-1% 5W

R59 0.2 +-1% 10W 1.78 +-1% 5W

R60 390 +-5% 3W 1K +-5% 3W 1.52K +-5% 3W 2.6K +-5% 3W

R62 42.2K +-1% .125W 105K +-1% .125W 475K +-1% .125W 825K +-1% .125W

R70 178K +-1% .125W 383K +-1% .125W 23.7K +-1% .125W 100K +-1% .125W

R72 13.3K +-1% .125W 6.19K +-1% .125W 51.1K +-1% .125W 26.1K +-1% .125W

R74,75 12.1K +-1% .125W 12.1K +-1% .125W 20.5 +-1% .125W 17.8K +-1% .125W

R77 21.5 +-1% .125W 21.5 +-1% .125W 56.2 +-1% .125W 56.2 +-1% .125W

R79 147K +-1% .125W 422K +-1% .125W 681K +-1% .125W 1M +-1% .125W

R82 26.1K +-1% .125W 26.1K +-1% .125W 68.1K +-1% .125W 68.1K +-1% .125W

R98 261K +-1% .125W 100K +-1% .125W 68.1K +-1% .125W 31.6K +-1% .125W

R115 75K +-1% .125W 82.5K +-1% .125W 75K +-1% .125W 68.1K +-1% .125W

R116 28K +-1% .125W 38.3K +-1% .125W 38.3K +-1% .125W 35.7K +-1% .125W

R124 1 +-1% .125W 1 +-1% .125W

R125 681K +-1% .125W 681K +-1% .125W

Q1,4 MOSFET N-CHAN E-MODE TO 204AE MOSFET N-CHAN E-MODE TO 204AE MOSFET N-CHAN E-MODE TO 3 SI MOSFET N-CHAN E-MODE TO 3 SI

Q5,8 NPN 2N2222A SI TO-18 PD=500MW2 NPN 2N2222A SI TO-18 PD=500MW

Q6,7 NPN 2N2222A SI TO-18 PD=500MW2 NPN 2N2222A SI TO-18 PD=500MW2 PNP 2N2907A SI TO-18 PD=400MW PNP 2N2907A SI TO-18 PD=400MW

U2 IC OP AMP GP DUAL 8 PIN DIP-P IC OP AMP GP DUAL 8 PIN DIP-P

U21,22,23,24 OPTO-ISOLATOR LED-TRIAC OPTO-ISOLATOR LED-TRIAC

CR3,4,5,6,7 DIODE-GEN PRP 180V 200MA D0-35 DIODE-GEN PRP 180V 200MA D0-35

CR11,14 DIODE-PWR RECT 400V 1A 50NS DO-41 DIODE-PWR RECT 400V 1A 50NS DO-41

T1 TRANSFORMER-POWER FOR E3614A TRANSFORMER-POWER FOR E3615A TRANSFORMER-POWER FOR E3616A TRANSFORMER-POWER FOR E3617A

T2,3 TRANSFORMER-PULSE; PRI IND:5MH TRANSFORMER-PULSE; PRI IND:5MH

A-19

Manual Supplement

Supplement Agilent Part Number : 5959-5336, Edition 4

Supplement Print Date : 14 April, 2000

This supplement updates the following document:

Agilent E361XA 60W Series Lab Bench DC Power Supplies

Manual Agilent Part Number : 5959-5310

What is a manual supplement?

A manual supplement keeps your manual up-to-date. The supplement, which consists of additional pages for your manual, is shipped with the manual that it updates. Additional pages have page numbers with a lower-case letter. For example, if one additional page is added between pages 1-10 and 1-11, it will be numbered 1-10-1.

This supplement is new information that was not described in the manual

for remote programming of the E3614A/E3615A/E3616A/E3617A with a voltage or current source and resistors.

Voltage and Current Programming of the E3614A/15A/16A/ 17A with a Voltage and Current Source

Remote analog voltage programming permits control of the regulated output voltage or current by means of a remotely varied voltage or current. The stability of the programming voltages directly affects the stability of the output. The voltage control or current control on the front panel are disabled during analog programming.

NOTE The CV(-) terminal on the rear panel is internally connected to the plus output

terminal. In following connections, it is recommended to use Figure 2, Figure 4, or Figure 6 if the negative terminal of the “Programming Voltage” is not floted from

its circuits.

Constant Voltage Mode

The programming voltage is not isolated from the power supply output. The power supply may be programmed with a voltage that is common to either the plus output, or the minus output.

Programming Voltage Common to the Plus output

Figure 1

Set the CV switch down on the rear panel, and all others up. V

= 1/A x V

out

= A x V

out

Where V

is the power supply output voltage.

out

is the programming voltage.

A is the gain factor and the values of each model are as below.

Model A 1/A

E3614A 0.8 1.25 E3515A 2.0 0.5 E3616A 3.5 0.29 E3617A 6.0 0.17

1-10-1

Programming Voltage Common to the Minus Output

Figure 2

Set the CV switch down on the rear panel, and all others up. V

= 1/A x V

out

= A x V

out

Where V

is the power supply output voltage.

out

is the programming voltage.

A is the gain factor and the values of each model are as below.

Model A 1/A

E3614A 0.44 2.25 E3515A 0.67 1.5 E3616A 0.78 1.29 E3617A 0.86 1.17

Alternative Voltage Programming Using Resistors

Programming Voltage Common to the Plus Output

Figure 3

The M/S2 switch must be in the down position. For best results, place a 0.1µF capacitor in parallel with R2.

= (R1/R2) x V

= (R2/R1) x V

out

Where V

R1 and R2 should be in the 1KΩ to 100KΩ range.

out

is the power supply output voltage.

out

is the programming voltage.

1-10-2

Programming Voltage Common to the Minus Output

Figure 4

The output will always be the same or less than the programming voltage. The M/S2 switch must be in the down position. For best results, place a 0.1µF capacitor

in parallel with R2. V

= (R1R2) / R2 x V

= R2 / R1+R2) x V

out

Where V

out

is the power supply output voltage.

out

is the programming voltage.

R1 and R2 should be in the 1KΩ to 100KΩ range.

1-10-3

Constant Current Mode

The E3614A/15A/16A/17A may be programmed for constant current with an analog voltage or current. Constant current with analog voltage programming can only be achieved with a voltage source that is common with the positive output terminal.

Constant Current with Voltage Programming

Figure 5

Set the CC switch down the rear panel, and all others up. V

= 1/A x I

out

= A x V

out

Where I

is the power supply output current.

out

is the programming voltage.

A is the transconductance in Amp/Volt and the values of each model are as below.

Model A (A/V) 1/A (V/A)

E3614A 0.6 1.67 E3515A 0.3 3.33 E3616A 0.17 6.0 E3617A 0.1 10

Constant Current with Current Programming

When using current to program the power supply, the source must have a dynamic range of 10 volts when the programming source is common to the plus output and 10 volts plus the maximum output voltage expected when the programming source is common to the minus output of the power supply.

The load to the power supply must be stable for the constant current output to be accurate. Current transient response is not specified, and depends on the change of the output voltage of the power supply.

1-10-4

Figure 6

Set the CC switch down, and all others up. I

= 1/A x I

out

= A x V

out

Where I

is the power supply output current in amps.

out

is the programming current in µamps.

A is the gain.

Model A (A/µA) 1/A (µV/A)

E3614A 0.055 18 E3515A 0.0278 35.9 E3616A 0.0158 63.4 E3617A 0.00928 108

Programming currents can be increased by adding a resistor across the CC+ and CC-. A 10 volts drop across R1 represents full scale current of the power supply. When a 1 kohm resistor is added across R1, the programming currents are as follows with the programming current in mA.

Model A (A/mV) 1/A (mA/A)

E3614A 0.594 1.69 1.7 E3515A 0.297 3.37 3.45 E3616A 0.168 5.95 6.28 E3617A 0.0989 1.01 11.2

Parallel resistor required for a

1 amp/mamp value of A (kohm)

Current Monitoring

Current of the power supply can be monitored across the internal current monitoring resistor. One side of the resistor is at the +output and A3; the other side of the resistor is at A1. The table below shows the resistor value and conversion factors. To obtain the current divide the measured voltage by the resistor value or multiply the amps/V times the voltage measured.

Model

E3614A 0.1 10 E3515A 0.2 5 E3616A 0.6 1.67 E3617A 0.89 1.12

Resistor

value (

Ω)

1-10-5

amps/V

Voltage and Current Programming of the E3614A/15A/16A/17A with Resistors

Remote programming with resistors permits control of the regulated output or current by means of a remotely varied resistor. The sum of the resistance of external programming resistors (R1 + R2) should be more than 40 kohm. T o have more pr ecise output voltage, use a variable resistor mor e than 40 kohm. The voltage control on the front panel is disabled during remote resistor programming.

NOTE Do not operate the power supply simultaneously in the remote analog voltage

programming and in the remote resistor programming.

Remote Resistor Programming Connections

Remote resistor programming requires changing the setting of the switches and

connecting external resistors between “+” and “`-” terminals of “CV” and “VREF” terminal or “+” and “-” terminals of “CC” and “VREF” terminal. Any noise picked up on the programming leads will appear on the power supply's output and may degrade regulation. To reduce noise pickup, use a twisted or shielded pair of wires for programming, with the shield grounded at one end only.

Remote Resistor Programming, Constant Voltage

Figure 7

Set the CV switch down on the rear panel, and all others up. V

= A x [V

out

Where V

x {R/(R + R2 + 100)}]

REF

is the power supply output voltage.

out

A is the gain factor and the values of each model are as below. V

is between 10.11 V and 11.40 V.

REF

R = (92800 x R1)/(92800 + R1) R1 + R2 > 40 kohm

Model A

E3614A 0.8 E3515A 2.0 E3616A 3.5 E3617A 6.0

1-10-6

Remote Resistor Programming, Constant Current

Figure 8

Set the CC switch down on the rear panel, and all others up. I

= A x [V

out

Where I

x {R/(R + R2 + 100)}]

REF

is the power supply output current.

out

A is the gain factor and the values of each model are as below. V

is between 10.11 V and 11.40 V.

REF

R = (92800 x R1)/(92800 + R1) R1 + R2>> 40 kohm

Model A

E3614A 0.6 E3515A 0.3 E3616A 0.17 E3617A 0.1

1-10-7

I

CERTIFICATION

Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology (formerly National Bureau of Standards), to the extent allowed by that organization's calibration facility, and to the calibration facilities of other International Standards Organization members.

WARRANTY

This Agilent Technologies hardware product is warranted against defects in material and workmanship for a period of three years from date of delivery. Agilent software and firmware products, which are designated by Agilent for use with a hardware product and when properly installed on that hardware product, are warranted not to fail to execute their programming instructions due to defects in material and workmanship for a period of 90 days from date of delivery. During the warranty period, either Agilent or Agilent Technologies will, at its option, either repair or replace products which prove to be defective. Agilent does not warrant that operation the software, firmware, or hardware shall be uninterrupted or error free.

For warranty service, with the exception of warranty options, this product must be returned to a service facility designated by Agilent. Return to Englewood Colorado Service Center for repair in United States(1-800-258-5165). Customer shall prepay shipping charges by (and shall pay all duty and taxes) for products returned to Agilent for warranty service. Except for the products returned to Customer from another country, Agilent shall pay for return of products to Customer.

Warranty services outside the country of initial purchase are included in Agilent's product price, only if Customer pays Agilent international prices (defined as destination local currency price, or U.S. or Geneva Export price).

If Agilent is unable, within a reasonable time, to repair or replace any product to condition as warranted, the Customer shall be entitled to a refund of the purchase price upon return of the product to Agilent.

The warranty period begins on the date of delivery or on the date of installation if installed by Agilent.

LIMITATION OF WARRANTY

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Customer, Customer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper site preparation and maintenance. TO THE EXTENT ALLOWED BY LOCAL LAW, NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. AND AGILENT SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

For consumer transactions in Australia and New Zealand: The warranty terms contained in this statement, except to the extent lawfully permitted, do not exclude, restrict or modify and are in addition to the mandatory rights applicable to the sale of this product to you.

EXCLUSIVE REMEDIES

TO THE EXTENT ALLOWED BY LOCAL LAW, THE REMEDIES PROVIDED HEREIN ARE THE CUSTOMER'S SOLE AND EXCLUSIVE REMEDIES. AGILENT SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

ASSISTANCE

The above statements apply only to the standard product warranty. Warranty options, extended support contacts, product maintenance agreements and customer assistance agreements are also available. Contact your nearest Agilent Technologies Sales and Service office for further information on Agilent's full line of Support Programs.

DECLARATION OF CONFORMITY

According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014

Manufacturer’s Name: Manufacturer’s Address:

Declares, that the product:

Product Name: a) Single Output dc Power Supply (dual range)

Model Number: a) E3610A, E3611A, E3612A

Product Options: This declaration covers all options of the above product(s). Conforms with the following European Directives: The product herewith complies with the requirements of the EMC Directive 89/336/EEC (including

93/68/EEC) and carries the CE Marking accordingly. Conforms with the following product standards:

EMC

Safety The product herewith complies with the requirements of the Low Voltage Supplemental Information:

The product herewith complies with the requirements of the EMC Directive 89/336/EEC (including 93/68/EEC) and carries the CE Marking accordingly (European Union). As detailed in: Electromagnetic Compatibility (EMC) Certificate of Conformance No.TCF CC/TCF/00/102 based on Technical Construction File (TCF) No. ANJ12, dated 20/12/2000

Assessed by:

Agilent Technologies, Inc. Power Products PGU 140 Green Pond Road Rockaway, New Jersey 07866 U.S.A

b) Single Output dc Power Supply (single range) c) Single Output System Power Supply d) Multiple Output dc Power Supply e) Multiple Output System dc Power Supply

b) E3614A, E3615A, E3616A, E3617A c) E3632A d) E3620A, E3630A e) E3631A

Celestica Ltd, Appointed Competent Body Westfields House, West Avenue Kidsgrove, Stok e-on-Trent Straffordshire, ST7 1TL United Kingdom

Directive 73/23/EEC and carries the CE-marking accordingly

IEC 1010-1:1990+A1+A2 / EN 61010-1:1993 +A2

CSA C22.2 No. 1010.1:1993

May 4, 2002

Date

For further information, please contact your local Agilent Technologies sales office, agent or distributor.

Authorized EU-representative: Agilent Technologies Deutschland GmbH, Herrenberger Straβe 130, D71034 Böblingen, Germany

Bill Darcy / Regulations Manager

Agilent Technologies E3617A, E3614A, E3615A, E3616A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY SUMMARY

GENERAL INFORMATION

SPECIFICATIONS

INSTALLATION

OPERATING INSTRUCTIONS

OPERATING MODES

MULTIPLE-SUPPLY OPERATION

SERVICE INFORMATION

WARRANTY