Agilent Technologies n3305a, n3304a, n3301a, n3303a, n3306a, n3302a, n3300a manual Wire Considerations

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3 - Installation

conical

spacer

 

 

 

washer

(0380-4835)

 

 

 

(3050-1924)

 

 

 

 

 

 

4 AWG

insert

cover

 

 

tabs

insulated

 

wire max.

spacer

(5040-1736)

 

 

 

wire lug

 

 

 

 

(AMP 52266-3)

 

 

 

 

breakaway

 

 

connector

 

tab

 

 

assembly

 

 

 

 

with bolt

 

 

 

 

(5040-1739)

 

 

 

 

spacer

tighten

 

 

 

cover

 

 

 

 

 

 

 

 

screw

wires exiting at bottom

wires exiting at top

safety cover secured

 

 

 

Figure 3-6b. 8mm Screw Terminal Connectors

1.Attach a connecting lug with an insulated ring terminal to the input wires. Connecting lugs must have an opening of at least 8mm in diameter. The recommended wire lug for connecting AWG 4 wire to an 8mm stud is AMP p/n 52266-3. Refer to www.amp.com for information about ordering this wire lug.

2.Wire sizes smaller than the maximum of AWG 4 may be used, provided the wire lugs have the required 8mm diameter opening.

Caution To prevent damaging the wiring insulation, which may result in shorting the input, use the supplied spacer to offset the input wires from each other.

3.Attach the wire lugs to the connector. Place the conical washer between the bolt and the wire lug (refer to the exploded view in the upper left corner of figure 3-6b). The wires can exit either out of the top or out of the bottom. Place the supplied spacer under the appropriate wire lug to prevent interference between the wires. If the wires exit out of the top, place the spacer on the bottom terminal. If the wires exit out of the bottom, place the spacer on the top terminal.

4.Tighten the bolts to secure the wires to the connectors. Torque the bolts to between 20 and 25 in-lbs (between 225 and 280 N-cm) for a secure connection.

5.Remove the appropriate breakaway tab and install the safety cover over the connectors. Hand-tighten the Torx T10 cover screw.

Wire Considerations

WARNING To satisfy safety requirements, load wires must be heavy enough not to overheat while carrying the short-circuit output current of the device connected to the electronic load. Refer to Table 3- 2 for the ampere capacity of various stranded wire sizes.

Input connections are made to the + and connectors on the back of each module. A major consideration in making input connections is the wire size. The minimum wire size required to prevent overheating may not be large enough to maintain good regulation. It is recommended that stranded, copper wires be used. The wires should be large enough to limit the voltage drop to no more than 0.5 V per lead. Table 3-3 gives the maximum load lead length to limit the voltage drop to the specified limit.

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Contents USER’S Guide Warranty Information CertificationSafety Summary GeneralSafety Symbols Declaration Declaration of ConformityAcoustic Noise Information Printing HistoryTable of Contents TURN-ON Checkout 101 Quick Reference Front Panel -At a GlanceInstrument Configuration Rear Panel At a GlanceQuick Reference Front Panel Number Entry Use the Function keys and Entry keys to enter a new valueFront Panel Annunciators Immediate Action KeysFront Panel Menus At a Glance Quick Reference Front Panel Menus VoltageScpi Programming Commands At a Glance Complete description of all programming commandsQuick Reference Scpi Commands Task Where to find information Document OrientationGetting Started Map Safety Considerations Options and AccessoriesDescription Features and Capabilities Front Panel ControlsRemote Programming Constant Current CC Mode Operating ModesImmediate Current Level Transient Current Level Constant Resistance CR ModeGeneral Information Triggered Current Level Software Current LimitConstant Voltage CV Mode Triggered Resistance LevelTransient Resistance Level Triggered Voltage Level Transient Voltage LevelPulsed Transient Operation Transient OperationContinuous Transient Operation Toggled Transient OperationTriggered Operation Triggering a preset levelList Operation Triggering a transient pulseSlew Rate and Minimum Transition Time Risetime Transition LimitationTransition Time Slew Rate Examples Input Control Protection FeaturesResetting Latched Protection Short On/OffGeneral Information Overvoltage OverpowerOvertemperature OvercurrentReading Remote Programming Errors Reverse VoltageStatus Reporting Remote Sensing Saving and Recalling SettingsExternal Control Signals Monitor OutputsFault Input MeasurementsPort On/Off RMS Measurements Power MeasurementsDC Measurements Minimum and Maximum MeasurementsDamage Packaging Material CleaningInspection Items SuppliedInstalling the Modules ProcedureInstallation Location Channel Number3A. N3300A Outline Diagram Bench Operation Rack MountingDo not block the fan exhaust at the rear of the unit Power Cord Manually-Tightened ConnectorsInput Connections 8mm Screw Terminal Connector option UJ1 6a. Manual ConnectorWire Considerations Stranded Copper Wire Ampere Capacity Wire Size AmpacityMaximum Wire Lengths to Limit Voltage Drops A11 and A10 Control ConnectorA1-A3 +S and -SSense Switch Trigger and Digital ConnectionsComputer Connections Gpib InterfaceRS-232 Interface Remote Sense Connections Application ConnectionsLocal Sense Connections Parallel Connections11. Remote Sensing Low Voltage Operation 13. Zero Volt LoadingCheckout Procedure IntroductionCheckout Programming Values Selftest Error Codes Error MessagesSelftest Errors Case of TroubleFront Panel Description Front Panel, Overall ViewFront Panel Operation Display Command Function System KeysFunction keys Immediate Action KeysScrolling Keys Metering KeysDisplay Measurement Input Control Keys InpshorTransient Control Keys Trigger Control KeysList Control Keys Entry Keys Entry KeysExamples of Front Panel Programming Using the Front Panel DisplaySet the constant current mode input Programming Constant Current, Voltage and Resistance ModesSet the constant resistance mode input Set the constant voltage mode inputSet transient operation for Continuous mode Programming Transient OperationSet transient operation for Pulse mode Set transient operation for Toggled modeProgramming Lists Tmode ToggList Sequence Making Basic Front Panel Measurements Querying and Clearing Output Protection and ErrorsQuery and Clear Errors as follows Use the Meter menu for making front panel measurementsSet the Gpib address as follows Setting the Gpib AddressStoring and Recalling Instrument States Save an instrument state in location 0 as followsSpecifications Specifications Specifications a Table A-2. Supplemental CharacteristicsSpecifications N3302A N3303A N3304A N3305A N3306APerformance Test and Calibration Procedures Equipment RequiredImon Zero Verification CC Mode TestsPerformance Tests Performance Test and CalibrationPerformance Test and Calibration B CV Mode TestsCC Mode Regulation Test Voltage Programming and Measurement Accuracy TestCV Mode Regulation Test CR Mode Tests Resistance Range 1 Programming AccuracyResistance Range 2 Programming Accuracy Resistance Range 3 Programming Accuracy Resistance Range 4 Programming AccuracyTransient Generator Mode Tests Frequency and Duty Cycle AccuracyPerformance Test and Calibration Pulse Width Accuracy Output 705TRAN on Output 705TRIGIMMAgilent N3302A Verification Test Record Agilent N3303A Verification Test Record Agilent N3304A Verification Test Record Agilent N3305A Verification Test Record Agilent N3306A Verification Test Record Calibration Figure B-3. Voltage Calibration Table B-2 Variables and Power Source Settings CalibrationParameters Calibrated IMON, Iprog and Current Calibration Program Performance Test and Calibration Wait Performance Test and Calibration Voltage Calibration Program Print TABXY9,15CALIBRATING High Voltage RangePerformance Test and Calibration Resistance Calibration Program Calibrating Range Performance Test and Calibration B 100 Index 101Index 102103 Europe Asia Pacific United States Latin AmericaCanada Australia/New Zealand JapanManual Updates