Agilent Technologies 5951-2826 Local/Remote Control, Programmable Features, Modes of Operation

Page 20

Local/Remote Control

Local (front panel) control is in effect immediately after power is applied. The front panel keypad and display allow manual control when the Electronic Load is used in bench test applications. Remote (computer) control goes into effect (front panel Rmt annunciator is on) as soon as the Electronic Load receives a command via the GPIB. A built-in GPIB interface and HPSL compatible commands allow control and readback of all functions when the Electronic Load is used in computer controlled applications.

With remote control in effect, only the computer can control the Electronic Load; the front panel keypad has no effect. You can, however, still use the front panel display to view the input voltage and current readings. You can return the Electronic

Load to local control from remote control by pressing . This will return the Electronic Load to local control, unless the local-lockout command has been received from the GPIB computer.

Details of local operation are covered in Chapter 4 and fundamentals of remote programming are given in Chapter 5. Complete HPSL programming details are given in the Programming Reference Guide. The remaining paragraphs in this chapter describe the operating modes, transient operation, protection features, and other operating features of the Electronic Load.

Programmable Features

Modes of Operation

The three modes of operation are:

∙constant current (CC)

∙constant voltage (CV)

∙constant resistance (CR)

When programmed to a mode, the Electronic Load remains in that mode until the mode is changed or until a fault condition, such as an overpower or overtemperature, occurs. When changing modes, the load’s input is disabled for approximately 6 milliseconds (non-conducting state) before the new mode is enabled. This insures that there will be minimum overshoots when changing modes.

The current, resistance, and voltage mode parameters described in subsequent paragraphs can be programmed whether or not the mode is presently selected. When a mode is selected via the front panel or via the GPIB, most of the associated parameters will take effect at the input (exceptions are noted in the mode descriptions).

Constant Current CC (Mode)

In this mode, the load will sink a current in accordance with the programmed value regardless of the input voltage (see

Figure 2-1). The CC mode can be set with front panel keys(, , and ) or via the GPIB (MODE:CURR command). The CC mode parameters are discussed in the following paragraphs.

Ranges

Current may be programmed in either of two overlapping ranges, a low range and a high range. The low range provides

better resolution at low current settings. The range can be set at the front panel (, and ENTRY keys) or via the GPIB (CURR:RANG command). Any value in the low range selects the low range. Any value above the maximum of the low range selects the high range. Changing the range affects the load in the same manner as changing modes; i.e., it causes the input to go through a non-conducting state for approximately 0.2 milliseconds. Note that the values of the present current settings may be automatically adjusted to fit the new range. For example, if 10 A is the present setting and the 0 to 6 A range is then programmed, the current setting will automatically be changed to 6 A; see Chapter 4.

20 Operation Overview

Page 19 Page 21
Image 20
Page 19 Page 21
Contents Agilent Part No Microfiche Part No Updated April Operating ManualCertification Safety Summary Safety Summary Symbol DescriptionHerstellerbescheinigung Manufacturer’s DeclarationPrinting History Table of Contents Calibration Local OperationRemote Operation Considerations for Operating in Constant Resistance Mode What’s In This Manual Reader PathOptions General InformationSafety Requirements SpecificationsRegulation Constant Resistance Mode Ranges Modes Continuous ModePulsed Mode 6060B 6063BCurrent Readback Temperature Coefficient Supplemental Characteristics 6060B 6063BResolution Maximum Readback Capability BandwidthSupplemental Characteristics Maximum VA Peak Inrush Current 2.5 a typicalCurrent Slew Rate Rate # High Range Step Low Range Step Transition TimeModel 6063B Range Transient Current Level Resistance Slew RateOvershoot 6060B 6063B 10% With unit onWith unit off WidthPage Introduction Front Panel DescriptionRemote Programming Operation OverviewLocal/Remote Control Programmable FeaturesConstant Current CC Mode Modes of OperationTriggered Current Level Software Current LimitImmediate Resistance Level Constant Resistance CR ModeSlew Rate Transient Resistance Level Constant Voltage CV ModeTriggered Resistance Level Immediate Voltage Level Triggered Voltage LevelTransient Voltage Level Transient OperationHpsl Command Description Pulsed Transient OperationSelects the external trigger input Selects pulsed transient operationSets pulse width to 1 millisecond Selects the external trigger input sourceTriggering a preset level Triggering a transient pulseToggling Slew Rate And Minimum Transition TimeInput Current, Voltage, and Power Measurement Risetime Transition LimitationShort On/Off Transition Times and Slew RatesSaving and Recalling Settings Reading Remote Programming ErrorsInput On/Off Status ReportingProtection Features Resetting Latched ProtectionOvervoltage OvercurrentControl Connector OverpowerOvertemperature Reverse VoltageExternal Programming Input FaultMonitor Outputs Port On/Off Inspection Check Line Voltage Location and CoolingTurn-On Checkout Voltage Select Switches Line Voltage Fuse Agilent Part NoConnect The Power Cord Gpib Errors Input Errors Display DescriptionError Turn-On/SelftestController Connection Power TestGpib Connector Rear Panel Connectors and Switches Wire Size Strip backGpib Address AWGInput Binding Post Control Connector Pins 3 +S and -SIM and VM CommonTrigger Connector Sense SwitchApplication Connections Zero-Volt Loading Connections Maximum Wire Lengths to Limit Voltage DropsParallel Connections 11. Local Sensing 13. Parallel Operation Page Front Panel Controls and Indicators Description Local OperationControls and Indicators Description Function Keys Local Control Overview Turning the Input On/Off Using The Function Keys∙ Short on Recommended Programming Sequence Setting the Mode of Operation Setting CC ValuesCC Programming Ranges Function Key DisplayExamples Setting CR Values Examples Setting CV Values Continuous Pulse Train Programming Ranges Function Key Display Range of ValuesUsing The System Keys Shorting The InputSetting The Electronic Load’s Gpib Address Displaying Error CodesFactory Default Settings Function 6060B 6063B Changing Wake-up SettingsRecalling the Factory Default Values Enter/Output Statements Gpib AddressOutput EnterSending a Remote Command Remote Programming CommandsGetting Data Back Output 705 MEASCURR?Modes RangesTransient levels Slew RatesRemote Programming Flowchart Sheet Remote Programming Flowchart Sheet CR Mode Example CC Mode ExampleCV Mode Example Continuous Transient Operation Example Pulsed Transient Operation ExampleHpsl Command Short Form Output 705TRAN on Output 705INPUT onRemote Programming Ranges Function Constant Current CCConstant Resistance CR 6060BConstant Voltage CV Transient OperationPage Equipment Characteristics Recommended Model Example ProgramsEquipment Required Equipment Required for CalibrationCalibration Commands Calibration Flowcharts Example ProgramSupply Shunt Values Settings Calibration Information 6060B 6063BCalibration Flowchart Calibration Flowchart Calibration Flowchart Program Listing PauseWait END ifPause Subend Print Voltage CalibrationElse Explanation LinePage Considerations For Operating In Constant Resistance Mode Considerations For Operating In Constant Resistance ModeConsiderations For Operating In Constant Resistance Mode Index IndexIndex 24, 25, 26 Index Agilent Sales and Support Offices Agilent Sales and Support OfficeManual Updates
Top Page Image Contents