Agilent Technologies Agilent E3617A Serials KR83502522 service manual Constant Voltage CV Tests

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CONSTANT VOLTAGE (CV) TESTS

CV Setup. For all CV tests set the output current at full rated output to assure CV operation. The onset of constant current can cause a drop in output voltage, increased ripple, and other performance changes not properly ascribed to the con- stant voltage operation of the supply.

Load Regulation (Load Effect)

Definition: CV Load regulation is the change in the steady state value of dc output voltage due to a change in load resis- tance from open circuit to full load or from full load to open cir- cuit.

Test Parameters:

Measured Variable: Output Voltage

Expected Results: Less than 0.01% plus 2 mV

Test Procedure:

a.Connect the test equipment as shown in Figure A-4. Operate the electronic load in constant current mode and set its current to the full rated value of the power supply (6 A for E3614A, 3 A for E3615A, 1.7 A for E3616A and 1 A for E3617A).

b.Turn the supply's power on and turn CURRENT con- trol fully clockwise.

c.Turn up output voltage 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 digital voltmeter.

d.Record the output voltage at the digital voltmeter.

e.Operate the electronic load in open(input off) mode.

f.When the reading settles, record the output voltage on the digital voltmeter again. Check that the two recorded readings differ less than 0.01% of output voltage plus 2 mV.

MASTER

 

 

LOCAL

 

 

 

POWER SUPPLY

 

 

 

 

 

UNDER TEST

 

 

 

 

 

 

 

 

M/S 1

M/S 2

CV

 

CC

SENSE

 

 

SLAVE

 

 

REMOTE

 

 

 

 

 

+

-

 

+

-

+

-

 

+S

OUT

 

-S

CV

 

CC

VREF A1

A2 A3 A4 A5

 

 

 

 

 

 

 

+

DIGITAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

VOLTMETER

 

 

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rs

TO

 

 

 

 

 

 

 

DVM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

Model

Rs

 

 

 

 

 

 

 

-

 

+

 

 

 

E3614A, 15A, 16A

0.1 ohm 0.1% 10W

 

 

 

 

 

 

ELECTRONIC

 

 

 

E3617A

1 ohm 1% 5W

 

LOAD

 

 

 

 

 

 

Figure A-4. Basic Test Setup

Line Regulation (Source Effect)

Definition: Line regulation is the change in the steady state value of dc output voltage due to a change in ac input voltage from a minimum to a maximum value(±10% of nominal volt- age).

Test Parameter:

Measured Variable: Output Voltage

Expected Results: Less than 0.01% plus 2 mV

Test Procedure:

a.Connect the test equipment as shown in Figure A-4. Operate the electronic load in constant current mode and set its current to the full rated value of the power supply.

b.Connect the supply to the ac power line through a variable autotransformer which is set for low line volt- age(104 Vac for nominal 115 Vac, 90 Vac for nominal 100 Vac, and 207 Vac for nominal 230 Vac).

c.Turn the supply's power on and turn CURRENT con- trol fully clockwise.

d.Adjust VOLTAGE control until the front panel VOLTS display indicates exactly the maximum rated output voltage.

e.Record voltage indicated on the digital voltmeter.

f.Adjust autotransformer to high line voltage(127 Vac for nominal 115 Vac, 110 Vac for nominal 100 Vac, and 253 Vac for nominal 230 Vac).

g.When the reading settles, record the output voltage again. Check that the two recorded readings differ less than 0.01% of output voltage plus 2 mV.

Load Transient Response Time

Definition : This is the time for the output voltage to return to within a specified band around its voltage following a change from full load to half load or half load to full load.

Test Parameter:

Measured Variable: Output Voltage Transients

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

Test Procedure:

a.Connect the test equipment as shown in Figure A-4, but replace the DVM with the oscilloscope. Operate the electronic load in constant current mode.

b.Turn the supply's power on and turn CURRENT con- trol fully clockwise.

c.Turn up output voltage to the full rated value.

d.Set the electronic load to transient operation mode between one half of supply's full rated value and sup- ply's full rated value at a 1 KHz rate with 50% duty cycle.

e.Set the oscilloscope for ac coupling, internal sync and lock on either the positive or negative load transient.

f.Adjust the oscilloscope to display transients as in Fig- ure A-5.

g.Check that the pulse width of the transients at 15 mV from the base line is no more than 50 usec as shown.

A-4

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Contents Agilent E361xA 60W Bench Series DC Power Supplies Safety Summary Operating Instructions General Information Temperature Coefficient Operating Temperature RangeMeter Programming Resolution Line FuseInput Power Requirements InstallationInstallation Data Initial InspectionOperating Instructions TURN-ON Checkout ProcedurePower Cord IntroductionOperating Modes Local Operating ModeConnecting Loads Operation Beyond Rated OutputRemote Operating Modes Remote Voltage SensingRemote Analog Voltage Programming MULTIPLE-SUPPLY Operation Normal Parallel OperationAUTO-PARALLEL Operation Normal Series Operation Gramming according to the remote-programming instructionsAUTO-SERIES Operation Total output voltage to ground must not exceed 240 VdcAUTO-TRACKING Operaton = slave output voltageLoad Considerations Service Information Maintenance Test Equipment RequiredOperation Verification Tests Type Required Characteristics USE Recommended Model Performance TestsMeasurement Techniques Line Regulation Source Effect Constant Voltage CV TestsLoad Regulation Load Effect Load Transient Response TimePARDRipple and Noise Pardrms MeasurementPARDPeak-to-Peak Measurement Constant Current CC Tests CV Drift StabilityAdjustment and Calibration Procedure CC Drift StabilityReference and Bias Circuit TroubleshootingOverall Troubleshooting Procedure Regulating Loop TroublesSymptom Checks and Probable Causes Overvoltage Protection Circuit TroublesStep Action Response Probable Cause Step Measure Response Probable Cause Replaceable Parts Table A-10. Replaceable Parts List Table A-10. Replaceable Parts List Contd R28,111 0698-3228 Resistor 49.9K +-1% .125W TF TC=0+-100 RESISTOR-VAR 10K +-10% ALL IC V RGLTR-FXD-POS 4.8/5.2V TO-220 PKG ALL DIODE-GEN PRP 180V 200MA DO-35 ALL Table A-11. Component Value Model Manual Supplement Constant Voltage Mode T EAlternative Voltage Programming Using Resistors Programming Voltage Common to the Minus OutputR1 and R2 should be in the 1KΩ to 100KΩ range 10-3 Constant Current Mode Constant Current with Voltage ProgrammingCurrent Monitoring Remote Resistor Programming Connections Remote Resistor Programming, Constant VoltageRemote Resistor Programming, Constant Current Certification Declaration of Conformity

Agilent E3614A Serials KR83503035, Agilent E3617A Serials KR83502522, Agilent E3615A Serials KR83506197, Agilent E3616A Serials KR83502651 specifications

Agilent Technologies is a leading player in the field of electronic test and measurement devices, providing essential tools for engineers and scientists. Among their array of power supplies, models such as the Agilent E3616A, E3615A, E3617A, and E3614A stand out for their exceptional performance, reliability, and technological features.

The Agilent E3616A is a precision DC power supply known for its ability to deliver a maximum output of 60V and 3A. Its serial number, KR83502651, signifies its unique identity. This model is particularly valued in laboratory environments due to its advanced programming capabilities. It offers a comprehensive range of output voltage and current settings, making it versatile for various applications. One of its main features is the built-in 6V at 3A output, which can be useful for testing other devices.

Similarly, the Agilent E3615A, with the serial number KR83506197, provides an excellent blend of performance and functionality. It is capable of delivering up to 30V and 3A across its outputs. This model excels in its low noise operation, which is crucial for sensitive electronics testing. Furthermore, the user-friendly interface allows for quick adjustments and settings retrieval, making it a favorite among engineers. The E3615A is designed to support a wide range of applications, from component testing to powering devices in research settings.

The Agilent E3617A, identifiable by its serial number KR83502522, is another high-performance model that offers a maximum output of 30V and up to 3A. It features built-in read-back capabilities, enabling engineers to monitor the actual voltage and current supplied to the load. The E3617A stands out for its programmable output, allowing automated testing sequences to be implemented with ease.

Lastly, the Agilent E3614A, with the serial number KR83503035, is a cost-effective option without sacrificing quality. This model offers an output of up to 30V and 3A while maintaining stability and precision. Its compact design makes it easy to integrate into crowded workspaces or test setups. The E3614A is designed for durability, ensuring reliable performance over time, making it an excellent choice for both education and industrial applications.

With their high-precision outputs, easy programmability, and user-friendly interfaces, these Agilent power supplies serve as essential tools for a variety of testing and research needs, reflecting Agilent Technologies' commitment to quality and innovation in electronic measurement solutions.
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