NI 6284 Device Specifications - National Instruments

1 Device SPECIFICATIONSNI 6284M Series Data Acquisition: 18-Bit, 500 kS/s, 32 AI, 48 DIOThe following Specifications are typical at 25 C, unless otherwise noted. For moreinformation about the NI 6284, refer to the M Series User Manual available at InputNumber of channels16 differential or 32 single endedADC resolution18 bitsDNLNo missing codes guaranteedINLR efer to the AI Absolute Accuracy sectionSample rateSingle channel maximum625 kS/sMultichannel maximum (aggregate)500 kS/sMinimumNo minimumTiming accuracy50 ppm of sample rateTiming resolution50 nsInput couplingDCInput range V, V, V, 1 V, 2 V, 5 V, 10 VMaximum working voltage for analoginputs (signal + common mode) 11 V of AI GNDCMRR (DC to 60 Hz)110 dBInput impedanceDevice onAI+ to AI GND>10 G in parallel with 100 pFAI- to AI GND>10 G in parallel with 100 pFDevice offAI+ to AI GND820 AI- to AI GND820 Input bias current 100 pACrosstalk (at 100 kHz)Adjacent channels-75 dBNon-adjacent channels-95 dBSmall signal bandwidth (-3 dB)

2 750 kHz filter off, 40 kHz filter onInput FIFO size2,047 samplesScan list memory4,095 entriesData transfersDMA (scatter-gather), interrupts,programmed I/OOvervoltage protection for all analog input and sense channelsDevice on 25 V for up to eight AI pinsDevice off 15 V for up to eight AI pinsInput current during overvoltage condition 20 mA maximum/AI pinTable 1. Settling Time for Multichannel MeasurementsRangeFilter Off 15 ppm ofStep ( 4 LSB forFull-Scale Step)Filter Off 4 ppm ofStep ( 1 LSB forFull-Scale Step)Filter On 4 ppm ofStep ( 1 LSB forFull-Scale Step) 5 V, 10 V2 s8 s50 s V, 1 V, 2 s8 s50 s V, V3 s8 s50 s2 | | NI 6284 Device SpecificationsTypical Performance GraphsFigure 1. AI Settling Error versus Time for Different Source Impedances1101001 k10 k110100 Time ( s)Error (ppm of Step Size) 100 1 k 2 k 5 k 10 k Figure 2. AI Small Signal Bandwidth1 k10 k100 k1 M10 MFrequency (Hz)Normalized Signal Amplitude (dB)Filter ONFilter OFF 20 12 14 16 18 10 8 6 4 202NI 6284 Device Specifications | National Instruments | 3 Figure 3.

3 AI CMRR020406080100120140101001 k10 k100 kFrequency (Hz)CMRR (dB)2 V to V Range5 V Range10 V RangeAI Absolute AccuracyAI Absolute Accuracy (Filter On)Note Accuracies listed are valid for up to two years from the Device 2. AI Absolute Accuracy (Filter On)NominalRangePositiveFullScaleNominalR angeNegativeFullScaleResidualGainError(p pm ofReading)ResidualOffsetError(ppm ofRange)OffsetTempco(ppm ofRange/ C)RandomNoise, ( Vrms)AbsoluteAccuracyat FullScale( V)Sensitivity( V) | | NI 6284 Device SpecificationsNote Sensitivity is the smallest voltage change that can be detected. It is a functionof tempco17 ppm/ CReference tempco1 ppm/ CINL error10 ppm of rangeAI Absolute Accuracy (Filter Off)Note Accuracies listed are valid for up to two years from the Device 3. AI Absolute Accuracy (Filter Off)NominalRangePositiveFullScaleNominal RangeNegativeFullScaleResidualGainError( ppm ofReading)ResidualOffsetError(ppm ofRange)OffsetTempco(ppm ofRange/ C)RandomNoise, ( Vrms)AbsoluteAccuracyat FullScale( V)Sensitivity( V) 10-10451011701, Sensitivity is the smallest voltage change that can be detected.

4 It is a functionof tempco17 ppm/ CReference tempco1 ppm/ CINL error10 ppm of rangeAI Absolute Accuracy EquationAbsoluteAccuracy = Reading (GainError) + Range (OffsetError) + NoiseUncertaintyGainError = ResidualAIGainError + GainTempco (TempChangeFromLastInternalCal)+ ReferenceTempco (TempChangeFromLastExternalCal)OffsetErr or = ResidualAIOffsetError + OffsetTempco (TempChangeFromLastInternalCal) + INLE rrorNI 6284 Device Specifications | National Instruments | 5 NoiseUncertainty = RandomNoise 3100 for a coverage factor of 3 and averaging100 Absolute Accuracy ExampleAbsolute accuracy at full scale on the analog input channels is determined using the followingassumptions: TempChangeFromLastExternalCal = 10 C TempChangeFromLastInternalCal = 1 C number_of_readings = 100 CoverageFactor = 3 For example, on the 10 V range of the Filter On accuracy table, the absolute accuracy at fullscale is as follows.

5 GainError = 40 ppm + 17 ppm 1 + 1 ppm 10 = 67 ppmOffsetError = 8 ppm + 11 ppm 1 + 10 ppm = 29 ppmNoiseUncertainty = 60 3100 = 18 VAbsoluteAccuracy = 10 V (GainError) + 10 V (OffsetError) + NoiseUncertainty =980 VAnalog TriggersNumber of triggers1 SourceAI < >, APFI <0, 1>FunctionsStart Trigger, Reference Trigger,Pause Trigger, Sample Clock, Convert Clock,Sample Clock TimebaseSource levelAI < > Full scaleAPFI <0, 1> 10 VResolution10 bits, 1 in 1,024 ModesAnalog edge triggering, analog edge triggeringwith hysteresis, and analog window triggeringBandwidth (-3 dB)AI < >700 kHz filter off, 40 kHz filter onAPFI <0, 1>5 MHzAccuracy 1%6 | | NI 6284 Device SpecificationsAPFI <0, 1> characteristicsInput impedance10 k CouplingDCProtection, power on 30 VProtection, power off 15 VDigital I/O/PFIS tatic CharacteristicsNumber of channels48 total, 32 (P0.< >),16 (PFI < >/P1, PFI < >/P2)I/O type5 V TTL/CMOS compatibleGround referenceD GNDD irection controlEach terminal individually programmable asinput or outputPull-down resistor50 k typical, 20 k minimumInput voltage protection 20 V on up to two pins1 Waveform Characteristics (Port 0 Only)Terminals usedPort 0 (P0.)

6 < >)Port/sample sizeUp to 32 bitsWaveform generation (DO) FIFO2,047 samplesWaveform acquisition (DI) FIFO2,047 samplesDI Sample Clock frequency0 MHz to 10 MHz, system and bus activitydependentDO Sample Clock frequencyRegenerate from FIFO0 MHz to 10 MHzStreaming from memory0 MHz to 10 MHz, system and bus activitydependent1 Stresses beyond those listed under Input voltage protection may cause permanent damage to 6284 Device Specifications | National Instruments | 7 Data transfersDMA (scatter-gather), interrupts,programmed I/ODI or DO Sample Clock source2 Any PFI, RTSI, AI Sample or Convert Clock,Ctr n Internal Output, and many other signalsPFI/Port 1/Port 2 FunctionalityFunctionalityStatic digital input, static digital output,timing input, timing outputTiming output sourcesMany AI, counter, DI, DO timing signalsDebounce filter settings125 ns, s, ms, disable; high andlow transitions; selectable per inputRecommended Operating ConditionsLevelMinimumMaximum Input high voltage (VIH) VInput low voltage (VIL)0 VOutput high current (IOH) P0.

7 < > -24 mAOutput high current (IOH) PFI < >/P1/P2 -16 mAOutput low current (IOL) P0.< > 24 mAOutput low current (IOL) PFI < >/P1/P2 16 mAElectrical CharacteristicsLevelMinimumMaximum Positive-going threshold (VT+) VNegative-going threshold (VT-) V Delta VT hystersis (VT+ - VT-) V IIL input low current (Vin = 0 V) -10 AIIH input high current (Vin = 5 V) 250 A2 The digital subsystem does not have its own dedicated internal timing engine. Therefore, a sampleclock must be provided from another subsystem on the Device or an external | | NI 6284 Device SpecificationsDigital I/O CharacteristicsFigure 4. Digital I/O (P0.< >): Ioh versus Voh 50 45 40 35 30 25 20 15 10 5023456 Voh (V)Ioh (mA)55 C; Vdd = V25 C; Vdd = V0 C; Vdd = VFigure 5. Digital I/O (PFI < >/P1/P2): Ioh versus Voh 50 45 40 35 30 25 20 15 10 5023456 Voh (V)Ioh (mA)55 C; Vdd = V25 C; Vdd = V0 C; Vdd = VNI 6284 Device Specifications | National Instruments | 9 Figure 6.

8 Digital I/O (P0.< >): Iol versus (V)Iol (mA)55 C; Vdd = V25 C; Vdd = V0 C; Vdd = VFigure 7. Digital I/O (PFI < >/P1/P2): Iol versus (V)Iol (mA)55 C; Vdd = V25 C; Vdd = V0 C; Vdd = VGeneral-Purpose Counters/TimersNumber of counter/timers2 Resolution32 bitsCounter measurementsEdge counting, pulse, semi-period, period,two-edge separationPosition measurementsX1, X2, X4 quadrature encoding withChannel Z reloading; two-pulse encodingOutput applicationsPulse, pulse train with dynamic updates,frequency division, equivalent time sampling10 | | NI 6284 Device SpecificationsInternal base clocks80 MHz, 20 MHz, MHzExternal base clock frequency0 MHz to 20 MHzBase clock accuracy50 ppmInputsGate, Source, HW_Arm, Aux, A, B, Z,Up_DownRouting options for inputsAny PFI, RTSI, PXI_TRIG, PXI_STAR,analog trigger, many internal signalsFIFO2 samplesData transfersDedicated scatter-gather DMA controller foreach counter/timer; interrupts.

9 Programmed I/OFrequency GeneratorNumber of channels1 Base clocks10 MHz, 100 kHzDivisors1 to 16 Base clock accuracy50 ppmOutput can be available on any output PFI or RTSI Loop (PLL)Number of PLLs1 Reference signalPXI_STAR, PXI_CLK10, RTSI < >Output of PLL80 MHz Timebase; other signals derived from80 MHz Timebase including 20 MHz and100 kHz TimebasesExternal Digital TriggersSourceAny PFI, RTSI, PXI_TRIG, PXI_STARP olaritySoftware-selectable for most signalsAnalog input functionStart Trigger, Reference Trigger,Pause Trigger, Sample Clock, Convert Clock,Sample Clock TimebaseNI 6284 Device Specifications | National Instruments | 11 Counter/timer functionGate, Source, HW_Arm, Aux, A, B, Z,Up_DownDigital waveform generation (DO)functionSample ClockDigital waveform acquisition (DI)functionSample ClockDevice-to- Device Trigger BusPCIRTSI < >3 PXIPXI_TRIG < >, PXI_STARO utput selections10 MHz Clock, frequency generator output,many internal signalsDebounce filter settings125 ns, s, ms, disable; high andlow transitions.

10 Selectable per inputBus V or 5 V signal environmentDMA channels6, can be used for analog input, digital input,digital output, counter/timer 0, counter/timer 1 The PXI Device supports one of the following features: May be installed in PXI Express hybrid slots Or, may be used to control SCXI in PXI/SCXI combo chassisTable 4. PXI/SCXI Combo and PXI Express Chassis CompatibilityM Series Part NumberSCXI Control in PXI/SCXIC ombo ChassisPXI Express Hybrid SlotCompatible 191501C-02 NoYes191501A-0x/191501B-0xYesNo3In other sections of this document, RTSI refers to RTSI < > for the PCI devices orPXI_TRIG < > for PXI | | NI 6284 Device SpecificationsPower RequirementsCurrent draw from bus during no-load condition4+5 A+ A+12 A-12 ACurrent draw from bus during AI overvoltage condition4+5 A+ A+12 A-12 ACurrent LimitsCaution Exceeding the current limits may cause unpredictable behavior by thedevice and/or +5 V terminal (connector 0)1 A max5+5 V terminal (connector 1)1 A max5 PXI+5 V terminal (connector 0)1 A max5+5 V terminal (connector 1)1 A max5P0/PFI/P1/P2 and +5 V terminalscombined2 A maxPhysical CharacteristicsDimensionsPCI printed circuit cm cm ( in.)