NI 6124 Specifications

1 NI 6124 Specifications This document lists the Specifications for the NI PXIe-6124. For the most current edition of this document, refer to Refer to the DAQ Getting Started Guide for more information about accessing documents on the NI-DAQmx media. The following Specifications are typical at 25 C unless otherwise noted. Fran ais Deutsch Analog Input Number of channels .. 4 differential Overvoltage protection (AI +, AI ).. 36 V. Type of ADC. 16 bits, 1 in 65,536 Input current during overvoltage conditions .. 20 mA max 0. Sampling rate Input FIFO ,382 samples shared among channels used Maximum .. 4 MS/s per channel Minimum .. No minimum Data (scatter-gather), interrupts, Input impedance programmed I/O. AI to AI >100 G in parallel Interchannel nS. with 10 pF. AI + to AI >100 G in parallel Crosstalk (at 100 kHz).. 100 dB. with 10 pF. CMRR (at 60 Hz) ..75 dB. Input bias current .. 10 pA. Input coupling.

2 DC. DC Transfer Characteristics INL .. 1 LSB typ, Max working voltage for all analog input channels 2 LSB max Positive input (AI +).. 11 V for all ranges, 1 LSB max, Measurement Category I. no missing codes Negative input (AI ) .. 11 V for all ranges, Measurement Category I. Caution Do not use for measurements within Categories II, III, and IV. Table 1. NI 6124 Analog Input Range-Dependent Characteristics Bandwidth* THD System Noise SFDR Typ . Input Range (MHz) (dB at 100 kHz) (LSBrms) (dB). 10 V 2 100 100. 5 V 2 97 100. 2 V 2 95 100. 1 V 2 93 100. * 3 dB frequency Measured at 100 kHz, not including harmonics. Typical Performance Graphs Grounded-Input Histogram, 10 V Range Grounded Input Power Spectrum, 10 V Range 5000 0. 4500. 20. 4000. 40. Magnitude (dB). 3500. 3000. Hits 60. 2500. 80. 2000. 1500 100. 1000. 120. 500. 0 140. 3 2 1 0 1 2 3 0 500 k 1M M 2M. Code Frequency (Hz). Power Spectrum, 5 V Range, dB, 100 kHz Frequency Response, All Ranges 0 2.

3 20 0. Magnitude (dB). Magnitude (dB). 40 2. 60 4. 80 6. 100 8. 120 10. 0 200 k 400 k 600 k 800 k 1M 1k 10 k 100 k 1M 10 M. Frequency (Hz) Frequency (Hz). NI 6124 Specifications 2 AI Absolute Accuracy Table Nominal Range Residual Residual Offset Offset Absolute Gain Error Gain Error Tempco INL Error Random Accuracy Positive Negative (ppm of Tempco Reference (ppm of (ppm of (ppm of Noise, at Full Sensitivity . Full Scale Full Scale Reading) (ppm/ C) Tempco Range) Range/ C) Range) ( Vrms) Scale* ( V) ( V). 10 10 165 18 1 40 9 64 290 3,147 116. 5 5 175 18 1 40 11 64 153 1,636 61. National Instruments Corporation 2 2 195 18 1 40 18 64 79 714 32. 1 1 215 18 1 40 28 64 58 393 23. AbsoluteAccuracy = Reading (GainError) + Range (OffsetError) + NoiseUncertainty GainError = ResidualAIGainError + GainTempco (TempChangeFromLastInternalCal) + ReferenceTempco (TempChangeFromLastExternalCal). OffsetError = ResidualAIOffsetError + OffsetTempco (TempChangeFromLastInternalCal) + INL_Error 3 For a coverage factor of 3 and averaging 100 points.

4 NoiseUncertainty = RandomNoise ---------------------------------------- - 100. 3. * Absolute accuracy at full scale on the analog input channels is determined using the following assumptions: TempChangeFromLastExternalCal = 10 C. TempChangeFromLastInternalCal = 1 C. number_of_readings = 100. CoverageFactor = 3 . For example, on the 10 V range, the absolute accuracy at full scale is as follows: GainError = 165 ppm + 18 ppm 1 + 1 ppm 10 GainError = 193 ppm OffsetError = 40 ppm + 9 ppm 1 + 64 ppm OffsetError = 113 ppm 290 V 3. NoiseUncertainty = -------------------------- NoiseUncertainty = 87 V. 100. AbsoluteAccuracy = 10 V (GainError) + 10 V (OffsetError) + NoiseUncertainty AbsoluteAccuracy = 3,147 V. Sensitivity is the smallest voltage change that can be detected. It is a function of noise. Accuracies listed are valid for up to one year from the device external calibration. NI 6124 Specifications Analog Output Number of voltage DAC characteristics Resolution.

5 16 bits Pipeline ..0. Sampling rate Maximum One MS/s Two MS/s Minimum ..No minimum 1 LSB max Monotonicity ..16 bit guaranteed Output Output range .. 10 V. Output . Output current drive .. 5 mA. Overdrive 25 V. Overdrive current ..10 mA. Power-on glitch .. V for 10 s Settling time, full scale step 15 ppm (1 LSB)..2 s Slew rate ..20 V/ s AO waveform modes: Non-periodic waveform Periodic waveform regeneration mode from onboard FIFO. Periodic waveform regeneration from host buffer including dynamic update Glitch energy at midscale transition Magnitude ..30 mV. Duration ..200 ns Output FIFO size ..8,191 samples shared among channels used Data (scatter-gather), interrupts, programmed I/O. NI 6124 Specifications 4 AO Absolute Accuracy Table Nominal Range Residual Absolute Residual Gain Offset Error Offset Tempco INL Error Accuracy at Positive Negative Error (ppm of Gain Tempco Reference (ppm of (ppm of (ppm of Full Scale*.))))

6 Full Scale Full Scale Reading) (ppm/ C) Tempco Range) Range/ C) Range) ( V). 10 10 180 20 1 80 2 64 3,560. AbsoluteAccuracy = OutputValue (GainError) + Range (OffsetError). GainError = ResidualGainError + GainTempco (TempChangeFromLastInternalCal) + ReferenceTempco (TempChangeFromLastExternalCal). National Instruments Corporation OffsetError = ResidualOffsetError + AOOffsetTempco (TempChangeFromLastInternalCal) + INL_Error * Absolute accuracy at full scale on the analog output channels is determined using the following assumptions: TempChangeFromLastExternalCal = 10 C. TempChangeFromLastInternalCal = 1 C. The absolute accuracy at full scale is as follows: GainError = 180 ppm + 20 ppm 1 + 1 ppm 10 GainError = 210 ppm OffsetError = 80 ppm + 2 ppm 1 + 64 ppm OffsetError = 146 ppm 5. AbsoluteAccuracy = 10 V (GainError) + 10 V (OffsetError) AbsoluteAccuracy = 3,560 V. Accuracies listed are valid for up to one year from the device external calibration.

7 NI 6124 Specifications Digital I/O/PFI. Static Characteristics PFI/Port 1/Port 2 Functionality Number of total, Functionality .. Static digital input, 8 (P0.< >), static digital output, 16 (PFI < >/P1, timing input, PFI < >/P2) timing output Ground GND Timing output sources .. Many AI, AO, counter, DI, DO timing signals Direction terminal individually Debounce filter settings .. 125 ns, s, programmable as ms, disable;. input or output high and low transitions;. selectable per input Pull-down k typ, 20 k min Recommended Operation Conditions Input voltage protection1 .. 20 V on up to two pins Level Min Max Waveform Characteristics (Port 0 Only) Input high voltage (VIH) V V. Terminals used ..Port 0 (P0.< >). Input low voltage (VIL) 0V V. Port/sample to 8 bits Output high current (IOH). Waveform generation (DO) ,047 samples P0.< > 24 mA. Waveform acquisition (DI) ,047 samples PFI < >/P1/P2 16 mA.

8 DI Sample Clock frequency ..0 to 10 MHz2 Output low current (IOL). P0.< > 24 mA. DO Sample Clock frequency PFI < >/P1/P2 16 mA. Regenerate from FIFO ..0 to 10 MHz Streaming from memory ..0 to 10 MHz Electrical Characteristics system dependent2. Data (scatter-gather), Level Min Max interrupts, Positive-going threshold (VT+) V. programmed I/O. Negative-going threshold (VT ) V . DO or DI Sample Clock PFI, RTSI, Delta VT hysteresis (VT+ VT ) V . AI Sample or Convert Clock, IIL input low current (Vin = 0 V) 10 A. AO Sample Clock, IIH input high current (Vin = 5 V) 250 A. Ctr n Internal Output, and many other signals 1 Stresses beyond those listed under Input voltage protection may cause permanent damage to the device. 2 Performance can be dependent on bus latency and volume of bus activity. 3 The digital subsystem does not have its own dedicated internal timing engine. Therefore, a sample clock must be provided from another subsystem on the device or an external source.

9 NI 6124 Specifications 6 Digital I/O Characteristics P0.< >: Ioh versus Voh P0.< >: Iol versus Vol 0 40. 25 C. 5 35. 10 0 C. 55 C 30. 15. 25. 20. Ioh (mA). Iol (mA). 25 20. 25 C. 30 15. 35. 10. 40 55 C. 5. 45. 0 C 0. 50. 2 3 4 5 6 0 1 Voh (V) Vol (V). PFI < >/P1/P2: Ioh versus Voh PFI < >/P1/P2: Iol versus Vol 0 40. 25 C. 5 35. 55 C. 10. 30. 15 25 C. 20 25. Ioh (mA). Iol (mA). 0 C. 25 20. 30 15. 35. 0 C 10. 40. 55 C. 45 5. 50 0. 2 3 4 5 6 0 1 Voh (V) Vol (V). National Instruments Corporation 7 NI 6124 Specifications General-Purpose Counter/Timers Phase-Locked Loop (PLL). Number of counter/timers ..2 Number of PLLs .. 1. bits Reference PXI_STAR, PXI_CLK10, Counter measurements ..Edge counting, pulse, RTSI < >. semi-period, period, two-edge separation Output of 80 MHz Timebase, other signals derived Position measurements ..X1, X2, X4 quadrature from 80 MHz Timebase encoding with including 20 MHz and Channel Z reloading.

10 100 kHz Timebases two-pulse encoding Output , pulse train with External Digital Triggers dynamic updates, Source .. Any PFI, RTSI, frequency division, PXI_TRIG, PXI_STAR. equivalent time sampling Software-selectable for Internal base clocks ..80 MHz, 20 MHz, most signals MHz Analog input function .. Start Trigger, External base clock MHz to 20 MHz Reference Trigger, Base clock accuracy ..50 ppm Sample Clock, Convert Clock, Inputs ..Gate, Source, HW_Arm, Sample Clock Timebase Aux, A, B, Z, Up_Down Analog output function .. Start Trigger, Routing options for PFI, RTSI, Pause Trigger, PXI_TRIG, PXI_STAR, Sample Clock, analog trigger, Sample Clock Timebase many internal signals Counter/timer functions .. Gate, Source, HW_Arm, FIFO ..2 samples Aux, A, B, Z, Up_Down Data scatter-gather Digital waveform generation DMA controller for each (DO) Sample Clock counter/timer, interrupts, programmed I/O Digital waveform acquisition (DI) function.