Agilent Technologies Agilent E3615A Serials KR83506197 service manual AUTO-TRACKING Operaton

Page 13

Remote Sensing. 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 Analog Voltage Programming. To remote analog pro- gram with auto-series operation, connect program (external) volt- ages to the "CV" or "CC"" terminal of the master unit and set "CV" 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 polarity with respect to a common bus or ground. This operation is useful where simultaneous turn-up, turn-down or proportional control of all power supplies is required.

Figure 14 and Figure 15 show two and three supplies connected in auto-tracking with their negative output terminals connected together as a common or ground point. For two units in auto- tracking a fraction R2/(R1+R2) of the output of the master supply is provided as one of the inputs to the comparison amplifier of the slave supply, thus controlling the slave's output. The master sup- ply in an auto-tracking operation must be the positive supply hav- ing the largest output voltage. Turn-up and turn-down of the power supplies are controlled by the master supply. In order to maintain the temperature coefficient and stability specifications of the power supply, the external resistor should be stable, low noise, low temperature.

Determining Resistors. External resistors control the fraction of the master unit's voltage that is supplied from the slave unit. For two units in auto-tracking the ratio R1 and R2 is

R2/(R1+R2

= (Vs/Vm)

Where Vm

= master output voltage

Vs

= slave output voltage

It is recommended to connect a 0.1 μF capacitor in paral- lel 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 con- trol to set the output voltage from both units. When the master is in CV operation, the master's output voltage(Vm) is the same as its voltage setting, and the slave's output voltage for two units operation is Vm(R2/(R1+R2)). The VOLTAGE control of the slave unit is dis- abled. Set the CURRENT controls of master and slave units above the required currents to assure CV operation of master and slave units.

Overvoltage Protection. Set the OVP shutdown voltage in each unit so that it shuts down at a voltage higher than its output volt- age during auto-tracking operation. When a master unit shuts down, it programs any slave units to zero output. When a slave unit shuts down, it shuts down only itself.

Remote Sensing. To include remote sensing with auto-tracking operation independently, set up each unit for remote sensing according to the remote-sensing instructions under previous paragraph.

Remote Analog Programming. To simultaneously remote pro- gram both units' output voltages, set up only the master unit for remote voltage programming according to the remote program- ming instructions. To vary the fraction of the output voltage contri- bution by the slave unit, connect a variable resistor in place of R2 in two units operation. To independently remote program each unit's output current setting, set up each unit for remote control of output current according to the instructions under "Remote Pro- gramming, Constant Current" paragraph.

MASTER POWER SUPPLY

 

 

 

 

 

 

 

 

 

 

MASTER

 

LOCAL

 

+

_

 

+

_

+

_

 

 

M/S 1

M/S 2

CV

CC

SENSE

+S

OUT

-S

CV

 

CC

VREF A1 A2

A3

A4 A5

SLAVE

 

REMOTE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1

R2

 

 

 

 

 

 

LOAD

 

 

 

 

 

 

 

SLAVE POWER SUPPLY

 

 

 

 

 

 

 

 

 

 

 

MASTER

 

LOCAL

 

+

_

 

+

_

+

_

 

 

M/S 1

M/S 2

CV

CC

SENSE

+S

OUT

-S

CV

 

CC

VREF A1 A2

A3

A4 A5

SLAVE

 

REMOTE

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 14. Auto-Tracking Operation of Two Supplies

MASTER POWER SUPPLY

 

 

 

_

 

_

+ _

 

 

 

MASTER

 

LOCAL

 

 

+

+

 

 

 

M/S 1

M/S 2

CV

CC

SENSE

+S

OUT

-S

CV

 

CC VREF A1 A2

A3

A4

A5

SLAVE

 

 

 

 

 

REMOTE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD

 

 

 

R1

R2

 

 

SLAVE POWER SUPPLY(S1)

 

 

 

 

 

 

 

 

 

 

_

 

_

+ _

 

 

 

MASTER

 

LOCAL

 

 

+

+

 

 

 

M/S 1

M/S 2

CV

CC

SENSE

+S

OUT

-S

CV

 

CC VREF A1 A2

A3

A4

A5

SLAVE

 

 

 

 

 

REMOTE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD

 

 

 

R3

R4

 

 

SLAVE POWER SUPPLY(S2)

 

 

 

 

 

 

 

 

 

 

_

 

_

+ _

 

 

 

MASTER

 

LOCAL

 

 

+

+

 

 

 

M/S 1

M/S 2

CV

CC

SENSE

+S

OUT

-S

CV

 

CC VREF A1 A2

A3

A4

A5

SLAVE

 

 

 

 

 

REMOTE

 

 

 

 

 

 

 

 

 

 

 

R2

 

 

Where

Vm = masters unit's output voltage

 

 

 

Vs1 = R1+ R2

Vm

 

 

 

 

 

R4

 

 

 

 

Vs1 = slave(S1) unit's output voltage

 

 

Vs2 =

Vs1

 

 

 

Vs2 = slave(S2) unit's output voltage

 

 

R3+ R4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 15. Auto-Tracking Operation of Three Supplies

1-13

Page 12 Page 14
Image 13
Page 12 Page 14
Contents Agilent E361xA 60W Bench Series DC Power Supplies Safety Summary Operating Instructions General Information Meter Programming Resolution Operating Temperature RangeTemperature Coefficient Line FuseInstallation Data InstallationInput Power Requirements Initial InspectionPower Cord TURN-ON Checkout ProcedureOperating Instructions IntroductionConnecting Loads Local Operating ModeOperating Modes Operation Beyond Rated OutputRemote Voltage Sensing Remote Operating ModesRemote Analog Voltage Programming Normal Parallel Operation MULTIPLE-SUPPLY OperationAUTO-PARALLEL Operation Gramming according to the remote-programming instructions Normal Series OperationTotal output voltage to ground must not exceed 240 Vdc AUTO-SERIES Operation= slave output voltage AUTO-TRACKING OperatonLoad Considerations Service Information Test Equipment Required MaintenanceOperation Verification Tests Performance Tests Type Required Characteristics USE Recommended ModelMeasurement Techniques Load Regulation Load Effect Constant Voltage CV TestsLine Regulation Source Effect Load Transient Response TimePardrms Measurement PARDRipple and NoisePARDPeak-to-Peak Measurement CV Drift Stability Constant Current CC TestsCC Drift Stability Adjustment and Calibration ProcedureOverall Troubleshooting Procedure TroubleshootingReference and Bias Circuit Regulating Loop TroublesOvervoltage Protection Circuit Troubles Symptom Checks and Probable CausesStep 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 T E Constant Voltage ModeProgramming Voltage Common to the Minus Output Alternative Voltage Programming Using ResistorsR1 and R2 should be in the 1KΩ to 100KΩ range 10-3 Constant Current with Voltage Programming Constant Current ModeCurrent Monitoring Remote Resistor Programming, Constant Voltage Remote Resistor Programming ConnectionsRemote 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.
Top Page Image Contents