DC Voltage Current Source/Monitor
6240BDC Voltage Current Source/MonitorCapable of high-speed response pulsesource, 5½-digit measurement and highprecision low-resistance measurementl Source and measurement rangeVoltage: 0 to 15 V, Current: 0 to 4 A (1 A for DC)l Source and measurement accuracy: 0.02 %l Measurement display of 5½ digits with resolution of 1 μV/100 pAl Source/sink of 4 A for the maximum pulse width of 20 msl Pulse measurement with minimum pulse width of 50 μsand 1 μs stepl Sink-enabled bipolar outputl Low-resistance measurement canceling thermal electromotive force for conductive materialshttp://www.adcmt-e.com
Semiconductor test with high-speed pulses avoiding heat generationContact resistance measurement that cancels thermal EMFThe DC Voltage Current Source/Monitor 6240B not onlymaintains the performance of the 6240A but also adopts newly high-speed response pulse source and measurement function and a low-resistance measurement function that cancelsthermal EMF (electromotive force).It has 4½-digit display for voltage and current source and5½-digit display for measurement, and features high accuracy of 0.02 %.There are four types of sweep modes available: liner, fixed,random and 2-slope linear sweep, and also pulse measurement with a minimum pulse width of 50 µs is available.Thus, this model can be widely used as evaluation powersupply for developing semiconductors and other electroniccomponents and as power supply of characteristic test systems used in production lines.The maximum 4 A pulse source or pulse load function issuitable for evaluating small devices with larger currentcapacities, and the HI/LO limiter separate setting functionhas an advantage for evaluating LEDs, batteries and powerICs. Also, low-resistance test of connectors and low-resistance measurement of conductive materials according toJIS are possible. Moreover, the 6240B is capable of highprecision contact resistance measurement that cancelsthermal EMF generated on metal contact surfaces.Simultaneous display of sourceand measured valuesLow-resistance measurement function that cancels thermal EMF in addition to four source modes: DC, pulse,sweep and pulse sweepSource and Measurement FunctionThe source and measurement functions are selectable fromvoltage source, current source, voltage measurement, current measurement and resistance SENSELo-OUTPUTVSIM, VSVM, VSRM, ISVM, ISIM, ISRMEasy setting with rotary knobHigh throughput by suspend function that switches output ON or OFFwithout relay operationSwitching between voltage source (VS) andcurrent source (IS) by one-touch operationOutput range15 V/1 A (DC)10 V/4 A (pulse)Measurement function (monitor) easy selectablefrom voltage, current and resistanceHigh Performance DC Voltage C2
Wider applications with various voltage and current sourcemodes and limiter separate settingVoltage and Current Source ModeOutput Range 4 A Sink–15 V 1 A–10 V Source 10 V 15 VThere are four source modes; DC, pulse, DC sweep, pulsesweep. Then, the sweep modes are classified into four sweeptypes: fixed sweep, linear sweep, random sweep (arbitrarywaveform generation by user programming), 2-slope linearsweep (linear sweep with step value switching).The minimum pulse width is 50 μs.The minimum cycle is 2 ms, or 500 μs without measurement.–1 ADCPULSEContinuous spot Source–4 AFixed sweep SinkLinear sweepDC source and pulse sourceRandom sweepPulse source and pulse loadPulse width: 20 ms or less and duty factor: 20 % or less2-slope linearsweepGenerates pulse currentup to 4 A (20 ms)Supplies to pulse load ofup to 4 A (20 ms)HI/LO Limiter Separate Setting6240BDUT6240BDUTTRIGGER IN/SYNC OUT signal to perform synchronous operationof multi-units or synchronous control on external measuring instruments and to output comparison operation results, and INTERLOCKsignal to prevent malfunctionIn voltage or current source, the HI/LO limiter settings arevery important. For current source, the limiter voltage mustbe higher than the applied voltage. When voltage higherthan the limiter voltage is applied from the outside, the instrument detects overload and sets standby. When a capacitor is discharged after being charged at a constant currentwith the positive and negative limiters being set to the samevalue, overload occurs if the limiter voltage is lowered. Inaddition, it is discharged down to negative voltage when applying reverse polarity current.However, the 6240B allows separate setting of HI and LOlimiters. Furthermore, for the voltage-limiter, both HI andLO limiters can be set homo-polar. This prevents a capacitor or a battery from being over-discharged. Also, it is suitable for evaluating devices that are used at a constant current and do not tolerate reverse voltage application.Caution!For IS, applying external voltage above thevoltage limiter will set 0B rear panelOVGPIB interfaceUSB interfaceCurrent Source/MonitorLOVLLOVL(Conventional)3
High-speed response, low-noise and high-precision testingSuitable for system architect by output ON/OFF withoutrelay switchingSuspend FunctionHigh-Speed Response and Low NoiseThe 6240B can select from three output OFF statuses;STBY (output relay OFF), HiZ (output relay ON and highresistance), and LoZ (output relay ON and low resistance).Using this function can omit unnecessary relay ON/OFFoperations, and consequently solve conventional problems:l Prevents throughput reduction due to relay operating time.l Extends relay lifetime and increases product reliability.In addition, the setting of a suspend voltage (voltage in HiZand LoZ status) can prevent transient current from beinggenerated when connecting voltage sourcing devices suchas batteries.The following shows a representative response waveformand output noise. The response between 0 V and 10 V is approximately 30 µs at 0 to 90 % rising time and the outputnoise is approximately 2.4 mV p-p from DC to 20 MHz.OPR/STBY・ High-speed pulsegeneration0-3 V,Pulse width：50 μs,Period：500 μs3VReducing transientcurrent at output ONDUTLoZ/HiZ(Semiconductorrelay)50 μs・ Response waveform0-10 V30 μsVsus9VOutput OFF statusLoZHiZSTBYOutput relay Output status Current limiter setting valueONVsus, low resistance VS: Setting currentlimiter (IL)IS: 300 digits in the settingcurrent rangeONVsus, high resistance300 nAOFFOpenー・ Output noseVsus: Setting suspend voltage (default: 0 V)When a conventional generator or electronic load is connected with a battery, the output voltage is 0 V, and thenthe setting current starts flowing. In this case, the momentthat it is connected, transient current sink occurs, causingunnecessary battery discharge. On the other hand, by setting the suspend voltage, the 6240BD is connected in highimpedance state at the specified voltage and then the settingcurrent flows. This prevents unnecessary discharge at theconnection to the battery.Comparison of transient current at output ONThe following shows the comparison of transient currentwhen the output status is set to Operate with IS 500 mA,VL 3 V, Vbatt 1.5 V and load resistance 1 Ω.When setting Vsus 0 V, transient current of 1.3 A flows at1.3 V. When setting to Vsus 1.5 V, it becomes almost 0 A.Low-Resistance Measurement withPulse Current Unaffected by HeatThe 6240B achieves low-resistance measurement withoutbeing affected by self-heating of DUTs by using pulse current application, bringing more precise measured valueswith little errors.[Ω]0.4998DCmeasurement0.4996Vsus 0 VVsus 1.5 V0.49940.49920.4990Pulsemeasurement0.49881.3 Vp-p0.498601020304050[sec]If 0.5 Ω resistance is measured with DC current and pulse currentSource current: 1 A, pulse width: 25 ms, duty factor: 10 %In DC measurement, the measured values fluctuate due to self-heating of the resistor. In pulse measurement, the measured values are not affected by the self-heating4
From characteristic test of semiconductors, new-energydevices and sensors to contact resistance measurementof connectors, wire harnesses and shunt resistorsLow Resistance Measurement of Conductive MaterialsBattery Charge/Discharge Tests and Power Device EvaluationThe 6240B newly adopts the low-resistance measurementfunction.When there is a temperature difference between the measurement cable and the DUT, thermal EMF (voltage: Vd)will be generated.Such thermal EMF becomes a significant cause of errors in lowresistance measurement at mΩ order or less. These errors can becanceled by switching the polarity of measurement current.Former models use sample software to cancel thermal EMFin measurement, however the 6240B can cancel it without thesoftware. Consequently, low-resistance test of connectors andlow-resistance measurement of conductive materials are possible. Moreover, the 6240B is capable of high-precision contactresistance measurement that cancels thermal EMF generated onthe contact surfaces of metals such as wire harness.T he 6240B ha ndles bipola r out put a nd is capableof source and sink operations. Therefore, it hasachieved 0 V sink operation which cannot be done bygeneral electronic loads. With its pulse source function, it can be used for evaluation of batteries and power supply devices used for various portable devices.6240BConnection diagramHI OUTPUTHI SENSEBatteryVMVoISLO SENSE6240BLO OUTPUTPulse discharge waveformIHIVdISMean value of two measurementsdefines the result.R (R1 R2)/2R1 IILOVo I IRBattery charge/discharge waveformDUT－IOPERATER2Measurement timingChargeCCCVDischargeCCCVHI VLVsusDiode Temperature Dependence EvaluationIn I-V characteristic test on devices that generate heat whencurrent flows, applying pulse current is effective for avoiding the influence of the self-heating.By using the current pulse sweep function and voltage measurement in synchronous with pulses, precise VF characteristic test with large current is available.Connection diagramIFHI6240BHI Pulse sweep function Current setting range:0 mA to 4 A2 W/4 WVVILO2 W/4 WLO Voltage measurementresolution: 10 µA Pulse measurement withminimum pulse width of 50 µsand minimum cycle of 2 msMeasurement waveformCurrent(IF)Depending onpulse width(Tw)IFVFTWTPVoltage(VF)LO VL0VHI VL: HI voltage limiter LO VL: LO voltage limiterCC: Constant current CV: Constant voltage Capable of handling various pulses of cell phoneswith a minimum pulse width of 50 µs and 1 µs step Capable of CV/CC operation for both charge and dischargeBoth the HI and LO voltage limiters can be set to positivevalues (or negative values) at the same time. If HI is set to 1.8 V and LO to 1.2 V, for instance, the mode becomesconstant voltage operation when the battery voltage reaches 1.8 V, and discharging terminates when it reaches 1.2 V. Avoids unnecessary discharge at output ONA general power supply is at 0 V or in open status of 0 Vwhen output is OFF, and a low impedance state of 0 V always occurs when output is ON. At this time, the battery isbeing discharged unnecessarily for a moment. However, bysetting the suspend voltage of the 6240B to 1.2 V, for instance, unnecessary discharge can be avoided since the voltage of the output terminal is 1.2 V the same as that of thebattery, even in a temporary low impedance state that occurswhen the output is ON. This function is also useful for preventing FET from being set to ON instantaneously at outputON when it is used as a gate voltage of J-FET or GaAsFET.5
SpecificationsCurrent limiterAll accuracy specifications are guaranteed for one year at a temperature of23 5 C and a relative humidity of 85 % or less. Voltage source/measurement range:Range300 mV3V15 VSource rangeSetting resolution Measurement range Measurement resolution0 to 320.00 mV10 μV0 to 320.999 mV1 μV0 to 3.2000 V100 μV0 to 3.20999 V10 μV0 to 15.000 V1 mV0 to 15.1999 V100 μV Current source/measurement range:Range30 μA300 μA3 mA30 mA300 mA1A4ASource rangeSetting resolution0 to 32.000 μA1 nA0 to 320.00 μA10 nA0 to 3.2000 mA100 nA0 to 32.000 mA1 μA0 to 320.00 mA10 μA0 to 1.0000 A100 μA0 to 4.0000 A200 μAMeasurement range Measurement resolution0 to 32.0999 μA100 pA0 to 320.999 μA1 nA0 to 3.20999 mA10 nA0 to 32.0999 mA100 nA0 to 320.999 mA1 μA0 to 1.01999 A10 μA0 to 4.01999 A10 μAThe source range in the 4 A range is limited by the duty factor condition.For 4 A range pulse source, maximum pulse width 20 ms/duty factor 20 %100 μs10500 μs2S/H（100 μs）10 Resistance measurement range:RangeDetermined by voltage range/current range calculationsMeasurement range Measurement resolution0 Ω to 0.75 GΩMinimum 0.25 μΩ Voltage limiter (compliance) range:Setting resolution*1100 μV1 mV10 mVSetting range0 V to 320 mV320.1 mV to 3.2 V3.201 V to 15 V Current limiter (compliance) range:Setting range100 nA to 32 μA32.01 μA to 320 μA320.1 μA to 3.2 mA3.201 mA to 32 mA32.01 mA to 320 mA320.1 mA to 1 A1.001 A to 4 ASetting resolution*10 nA100 nA1 μA10 μA100 μA1 mA1 mA1*1: Where, (Hi limiter value - Lo limiter value) 60 digits Accuracy: Includes calibration accuracy, 1-day stability, temperaturecoefficient, and linearity. 1-day stability: At constant power and load Temperature coefficient: At temperature of 0 to 50 CVoltage sourceRange300 mV3V15 VAccuracy1-day stability （％of setting V）0.02 150 μV0.01 70 μV0.02 350 μV0.01 200 μV0.02 3 mV*20.01 2 mVTemperature coefficient （ppm of setting V）/ 15 15 μV15 30 μV15 300 μVVoltage limiterRange300 mV3V15 VAccuracy1-day stability （％of setting V）0.1 1 mV0.05 200 μV0.05 8 mV0.01 1 mV0.07 80 mV0.01 10 mVTemperature coefficient （ppm of setting V）/ 100 50 μV15 100 μV15 1 mVVoltage limiter additional error: When Hi limiter is set to a negative value and Lo limiter is set to apositive value, an error of 0.1 % of setting is added.Current sourceAccuracy1-day stabilityRange （％of setting A A Vo/1 V）30 μA0.03 10 nA 300 pA300 μA 0.03 80 nA 3 nA3 mA0.03 800 nA 30 nA30 mA0.03 8 μA 300 nA300 mA 0.045 80 μA 3 μA1A0.05 0.8 mA 30 μA4A0.25 1 mA 55 μA0.01 5 nA 100 pA0.01 40 nA 1 nA0.01 400 nA 10 nA0.01 4 μA 100 nA0.01 40 μA 1 μA0.02 0.4 mA 10 μA0.08 0.4 mA 10 μAVo：Compliance voltage（－ 15 V to 15 V）630 μA300 μA3 mA30 mA300 mA1A4A1-day stabilityAccuracyTemperature coefficient （ppm of setting A （％of setting A A Vo/1 V） A Vo/1 V）/ 0.045 70 nA 300 pA 0.01 10 nA 100 pA 20 8 nA 10 pA0.045 700 nA 3 nA0.01 100 nA 1 nA20 20 nA 100 pA0.045 7.0 μA 30 nA 0.01 1 μA 10 nA20 200 nA 1 nA0.045 70 μA 300 nA 0.01 10 μA 100 nA 20 2 μA 10 nA0.055 700 μA 3 μA0.01 100 μA 1 μA 20 20 μA 100 nA0.1 7.0 mA 30 μA 0.02 1 mA 10 μA40 200 μA 1 μA0.25 12 mA 55 μA 0.08 1 mA 10 μA40 200 μA 2 μAVo：Compliance voltage（－ 15 V to 15 V）Voltage measurement(Auto zero: ON, integration time: 1 PLC to 200 ms)Accuracy1-day stability （% of reading V）0.02 75 μV0.008 50 μV0.02 120 μV0.008 60 μV0.02 1.2 mV*20.008 400 μVRange300 mV3V15 VTemperature coefficient （ppm of reading V）/ 15 15 μV15 15 μV15 150 μV*2: In the 15 V range, 200 μV is added per 0.1 V remote sensing voltage.The measurement resolution with integration time of 100 μs, 500 µs and S/H (Sample Hold) will be as follows:Integration timeMeasurement resolution（digits）RangeTemperature coefficient （ppm of setting A A Vo/1 V）/ 20 1 nA 10 pA20 10 nA 100 pA20 100 nA 1 nA20 1 μA 10 nA20 10 μA 100 nA35 100 μA 1 μA35 100 μA 2 μA(Auto zero: ON, integration time: 1 PLC to 200 ms)Current measurementTemperature coefficientAccuracy1-day stabilityRange （ppm of reading A （％of reading A A Vo/1 V） A Vo/1 V）/ 30 μA 0.03 8 nA 300 pA 0.01 4 nA 100 pA20 1 nA 10 pA300 μA 0.03 70 nA 3 nA0.01 35 nA 1 nA20 7 nA 100 pA3 mA0.03 700 nA 30 nA 0.01 350 nA 10 nA20 70 nA 1 nA30 mA 0.03 7 μA 300 nA 0.01 3.5 μA 100 nA20 700 nA 10 nA300 mA 0.045 70 μA 3 μA 0.01 35 μA 1 μA20 7 μA 100 nA1A0.05 0.7 mA 30 μA 0.02 0.35 mA 10 μA 35 70 μA 1 μA4A0.25 0.8 mA 55 μA 0.08 0.35 mA 10 μA 35 70 μA 2 μAVo：Compliance voltage（－ 15 V to 15 V）(Auto zero: ON, integration time: 1 PLC to 200 ms)Resistance measurementAccuracy 1-day stabilityTemperature coefficientCondition （% of reading） （ppm of reading） （digits digits digits） （digits digits digits）/ Reading item: ( Voltage source setting item Currentmeasurement reading item)VoltageFull-scale item: (Voltage source full-scale item digit value sourcecurrent measurement full-scale item digitvalue CMV item digit value)*3Reading item: (Current source setting item Voltagemeasurement reading item)CurrentFull-scale item: (Current source full-scale item digit value sourceVoltage measurement full-scale item digitvalue CMV item digit value)*3Low-resistanceReading item: (Current source setting item Voltage measurement reading item)measurementFull-scale item: *4(4-wire onnection)*3: CMV item (A Vo/1 V);“source or measurement current” ”source or measurement voltage”/1 V digit valueVo: Compliance voltage (-15 V to 15 V)*4: Full-scale item (A Rm B)/IsA: Voltage limiter range toleranceVoltage limiter rangeＡ300 ｍＶ１0 μV3V50 μV15 Ｖ1 ｍVRm: Resistance measured valueB: Current value tolerance due to current sourcelinearity 3 digits worth ( 5 digits worth in the 4 A range)Is: Current source setting valueThe full-scale item tolerances listed below are added to the integration time100 µs to 10 ms, S/H measurement accuracy and 1-day stability.Measurement rangeVoltagemeasurementCurrentmeasurement300 mV3 V, 15 V30 μA300 μA3 mA30 mA300 mA1A4AIntegration time Unit: digits (at 5 ½ digit display)10 ms 5 ms1 ms 500 μs 100 μs 57525050020307575250500S/H: Measurement in the sample hold mode (integration time: 100 μs)When LO OUTPUT is grounded to the chassis, the additional error of integration time in 30 μArange is the same as that in 300 μA range. Source linearity: 3 digits or less ( 5 digits or less in the 4 A range) Maximum output current: 0 to 15 V; 1 A (DC) 0 to 10 V; 4 A(maximum pulse width 20 ms/duty factor 20 %) Maximum compliance voltage: Up to 1 A (DC); 0 to 15 V Up to 4 A (pulse); 0 to 10 V
Output noise: For voltage source, within the range from no load to the maximum load [Vp-p]For current source, at the following load [Ap-p]oscillation in voltage source or voltage limiter statusVoltage sourceRangeLoad resistance300 mV3V15 V－－ Low frequency noiseDC to 100 HzDC to 10 kHz50 μV200 μV50 μV300 μV500 μV2 mVHigh frequency noiseDC to 20 MHz3 mV3 mV4 mVLow frequency noiseDC to 100 HzDC to 10 kHzHigh frequency noiseDC to 20 MHzCurrent sourceOutput resistance（Ω）Maximum loadCurrent rangecapacitanceVoltage sourceCurrent source30 μA500 mΩ or less1000 MΩ or higher1 μF300 μA100 mΩ or less1000 MΩ or higher1 μF3 mA10 mΩ or less100 MΩ or higher100 μF30 mA10 mΩ or less10 MΩ or higher100 μF300 mA10 mΩ or less1 MΩ or higher2000 μF1 A/4 A10 mΩ or less 100 kΩ/50 kΩ or higher2000 μFSupplied cable resistance: 100 mΩ or lessRangeLoad resistance30 μA300 μA3 mA30 mA300 mA1A4A10 kΩ10 kΩ1 kΩ1 kΩ1 kΩ10 Ω10 Ω10 nA30 nA200 nA2 μA20 μA500 μA500 μA60 nA150 nA2 μA15 μA100 μA1 mA1 mA500 nA600 nA6 μA20 μA150 μA10 mA10 mASwitching noiseVoltage sourceCurrent sourceVoltage sourceCurrent sourceCurrent limiterVoltage limiterRange switching noiseVoltagemeasurementCurrentmeasurementResponse switching noisePower OFF noiseOutput ON/OFF noiseTypical value [p-p]Load resistance600 mVAt 100 kΩ600 mVAt 100 kΩ－50 mVfast：100 digits 50 mV*5－slow：300 digits 50 mV*5－50 mV*650 mV*6－6－80 mV600 mV－50 mV*At 100 kΩ*5: "digits" indicates current source 4½ digit values. Double these values in the 4 A range.*6: The Limiter is inactive. While the limiter is active, it is the same as the current source range switching noise Settling time：Time to reach the final value 0.1 % when varying from zeroto the full scale.Setting conditions: Source values and limit values are full-scale settings.Load conditions: Pure resistance load, and load capacitance of 200 pF or less.Sourcerange300 mVVoltage source(Output current: 4 A3V1 A in the 15 V range)15 V30 μA300 μACurrent source3 mA(Output voltage: 15 V30 mA10 V in the 4 A range)300 mA1A4A(Typical
JIS are possible. Moreover, the 6240B is capable of high-precision contact resistance measurement that cancels thermal EMF generated on metal contact surfaces. Source and Measurement Function The source and measurement functions are selectable from voltage source, current source, voltage measurement, cur-rent measurement and resistance measurement.
Amplifier Configurations . Voltage Amplifier: Voltage input and Voltage output The controlled source is a Voltage -controlled-Voltage Source A. v Open Circuit Voltage Gain can be found by applying a voltage source with R. s 0, and measuring the open circuit output voltage(no load or R. L infinity) Source Amplifier Load . Amplifier Input .
Before setting up your LCD Monitor Some LCD Monitor models are packaged with a detached Table-Top Stand so you can mount your LCD Monitor to a wall right away. See page 10 (Installing the LCD Monitor to the Wall) if you want to mount the LCD Monitor to a wall. If you are not mounting the LCD Monitor to a wall, you will
For the voltage source above, since the voltage depends on another voltage, it is known as a voltage-controlled voltage source (VCVS). Similarly, the current would be called a current-controlled current source
JAVADI et al.: POWER QUALITY ENHANCEMENT OF SMART HOUSEHOLDS USING A MULTILEVEL-THSeAF 467 Fig. 4. Compensating current harmonics and voltage regulation, during grid initiated distortions. (a) Source voltage vS, (b) source current iS, (c) load voltage vL, (d) load current iL, (e) active-filter voltage VComp, (f) Harmonics current of the passive filter iPF, (g) Converter's output voltage VOut.
the Source 1 power source until the Source 2 power source does appear. Conversely, if connected to the Source 2 power source and the Source 2 power source fails while the Source 1 power source is still unavailable, the ATS remains connected to the Source 2 power source. ATSs automatically perform the transfer function and include three basic .
5/6/2011 The Common Source Amp with current source 2/11 A: Remember, every real current source (as with every voltage source) has a source resistance r o. A more accurate current source model is therefore: Ideally, r o . However, for good current sources, this output
Install your monitor and monitor mounting kit on a wall with flat surface. Ensure that the wall material is stable to support the weight of the monitor. Turn off the monitor and the power before disconnecting the cables from the LCD monitor. 1. Remove the monitor base. Lay
J’ai commencé à apprendre la guitare. Ma copine a choisi d’étudier le théâtre l’année prochaine. J’ai oublié d’acheter un cadeau d‘anniversaire pour ma sœur. Use of comparative and superlative of adjectives and adverbs such as: Je trouve l’espagnol plus facile que le français. Ma meilleure copine est plus petite que moi. La physique est la matière la plus difficile .
