6 1 2-Digit FlexDMM and 1.8 MS/s Isolated Digitizer

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1 NI PXI-4070 Superior accuracy and measurement rates 00 range or function changes per second 6 ppm basic 4-hour VDC accuracy Built-in self-calibration guarantees accuracy Tight integration with NI switches Single-slot U PXI module.8 MS/s isolated digitizer* Operating Systems Windows 000/NT/XP/Me/98 Recommended Software LabVIEW LabWindows/CVI Measurement Studio for C/C++ Switch Executive Other Compatible Software Visual Basic C/C++ Driver Software (included) NI-DMM Calibration Certificate Included Category II safety voltage rating Designed for UL IEC00 (CE) certified * Available with a future version of NI-DMM NEW Digits Resolution Max Sample Rate Reading Rate (Bits) DC Voltage DC Voltage DC Current Resistance 7 5 S/s 5 S/s 5 S/s 5 S/s 6 00 S/s 00 S/s 00 S/s 00 S/s 5 8 ks/s ks/s ks/s ks/s ks/s 5 ks/s 5 ks/s 5 ks/s 0.8 MS/s N/A N/A N/A Overview The National Instruments PXI digit FlexDMM achieves remarkable throughput rates while maintaining precision and stable measurement accuracy. This combination of speed and accuracy was previously available only with higher resolution DMMs costing thousands of dollars more. Thanks to the National Instruments proprietary FlexDMM technology, this DMM also provides a fully isolated, high-voltage digitizer, capable of acquiring waveforms at sampling rates up to.8 MS/s at ±00DCV input. Using the analysis functions in LabVIEW, you can analyze these waveforms in both the time and frequency domains. The FlexDMM has superior speed, accuracy, and functionality making it an excellent fit for use in automated tests on both the production floor and in R&D environment. Unmatched DC Performance The NI PXI-4070 shatters conventional 6 -digit DMM speed/performance barriers by using a computer-based, highly integrated measurement approach that exploits the high-speed PXI bus. At 6 -digits, the FlexDMM achieves VDC reading rates of 00 S/s. For those applications with higher throughput needs the FlexDMM has a maximum VDC reading rate of 5 ks/s at 4 -digits. These rates are at least three times faster than the traditional GPIB-controlled DMMs. With INFO CODES For more information, or to order products online visit ni.com/info and enter: pxi4070 BUY ONLINE! NI LabVIEW and NI-DMM driver software, you can extend the resolution of the FlexDMM to 7 digits at 5 S/s. The superior DC performance of the PXI-4070 is enhanced by its noise rejection algorithms. The algorithms range from simple power-line noise rejection to rejection of all interference above a specified frequency. Fast, Accurate AC Measurements With the FlexDMM, slow AC measurements are a thing of the past because it achieves unprecedented AC measurement speeds by solving a traditional analog problem of rms-to-dc conversion in the digital domain. The FlexDMM uses a digital algorithm that requires only a few cycles of a waveform to compute rms values, which dramatically increases AC reading rates. The algorithm automatically rejects the DC component of the signal, making it possible to offer a DC-coupled AC voltage mode, which completely bypasses the slow-settling input coupling capacitor required with traditional methods. The digital approach to rms computation offers accuracy benefits as well. The algorithm is completely insensitive to crest factor, and can deliver exceptionally quiet and stable readings. The FlexDMM guarantees AC accuracy down to % of full-scale, rather than the 0% of full-scale offered by traditional DMMs, and usable readings are obtainable even below 0.%of full-scale.

2 6 -Digit FlexDMM and Flexible-Resolution Isolated Digitizer The architectural design of the FlexDMM incorporates a.8 MS/s isolated digitizer. In isolated digitizer mode, the FlexDMM can acquire both AC and DC-coupled waveforms up to ± 00 V input, at a maximum sample rate of.8 MS/s. Isolation allows you to measure differential waveforms with high levels of common mode voltage. By combining LabVIEW software with the isolated digitizer capability of the PXI-4070, you can analyze transients, fly-back signals, or other non-repetitive high-voltage AC waveforms in both the time and frequency domain. No other 6 -digit DMM features this capability. NI-DMM driver software version. or later is required to use the PXI-4070 FlexDMM in isolated digitizer mode. You can vary the FlexDMM resolution from 0 bits to bits by simply changing the sampling rate, as reflected in Figure. With the isolated digitizer capability, the FlexDMM can minimize overall test system cost by eliminating the need to purchase a separate digitizer and reducing the test fixture size and maintenance costs. The FlexDMM acquisition mode (single-point vs. digitizer) is entirely software programmable and requires no external hardware intervention. Both measurements methods are available through the same input terminals. Tight Switch Integration The FlexDMM works well with all multiplexer/matrix switch modules. In particular, the FlexDMM integrates seamlessly with National Instruments switch offerings, such as the PXI-50 multiplexer and the SCXI-9 high-density matrix. When the FlexDMM is used in conjunction with these NI switch modules and NI Switch Executive, you can measure thousands of channels, consisting of voltages, thermocouples, RTDs, thermistors, and keep a firm control on the cost of your system. Figure. NI-DMM Soft Front Panel Figure. NI PXI-4070 FlexDMM Isolated Digitizer Guaranteed Measurement Integrity Unlike traditional benchtop DMMs, the NI PXI-4070 offers selfcalibration (Self-cal) which improves long-term accuracy. Self-cal compares measurements to onboard, high-precision, NIST-traceable standards, which removes errors due to temperature variation and long term drift. Self-cal takes less than a minute and does not require external calibrators. The PXI-4070 has a two-year external calibration cycle, as opposed to the traditional one year cycle. The FlexDMM provides offset-compensated ohms (OCO), which eliminates the thermal errors that are common in low-level resistance measurements. Superior Software Support All National Instruments DMMs are shipped with NI-DMM driver software. NI-DMM is an IVI-compliant driver that exposes the complete functionality of the DMM through an easy-to-use application programming interface. NI DMM also includes the DMM soft front panel (SFP), see Figure. The SFP is an interactive executable that provides an easy way to test input signals or debug your system. NI-DMM is optimized for use with National Instruments LabVIEW, LabWindows/CVI, and Measurement Studio, as well as Microsoft Visual Basic and Visual C/C++. Ordering Information NI PXI Includes module and NI-DMM for Windows 000/NT/XP/Me/9x.

3 Specifications DC Specifications Voltage Resistance Current Max Sampling Reading Reading Reading Digits Bits Rate Rate Rate Rate 7 5 S/s 5 S/s 5 S/s 5 S/s 6 00 S/s 00 S/s 00 S/s 00 S/s 5 8 ks/s ks/s ks/s ks/s ks/s 5 ks/s 5 ks/s 5 ks/s 0.8 MS/s N/A N/A N/A Maximum sampling rates refer to the isolated digitizer feature. This feature will be available in a future release of the NI-DMM driver. Autozero disabled, except 7 digits DC System Speeds Range or function changes... 00/s Autorange time, VDC and ADC... 5 ms Autorange time, resistance ms Trigger latency... µs Maximum trigger rate... 6 khz DC Accuracy Specifications All DC accuracy specifications apply to 6 -digit resolution, autozero and ADC calibration enabled. DC Voltage ± (ppm of reading + ppm of range) Tempco/ C (0-50 C) 4 Hr 90 Day Year Without With Range Resolution Input Resistance Tcal ± C Tcal ±5 C Tcal ± 5 C Self-Cal Self-Cal 00 mv 4 00 nv > 0 GΩ,0 MΩ V µv > 0 GΩ,0 MΩ V 0 µv > 0 GΩ,0 MΩ V 00 µv 0 MΩ V mv 0 MΩ ppm (part per million) = 0.000% Relative to external calibration source Using internal self-calibration; specifications valid over the entire operating temperature range 4 With offset nulling Tcal = temperature at which last self-calibration or external calibration was performed DC Current ± (ppm of reading + ppm of range) Burden Voltage year Range Resolution (typical) (0-50 C) 0 ma 0 na < 0 mv ma 00 na < 00 mv A µa < 800 mv Typical 4 hour accuracy ( C ±ºC) is ± (50 ppm of reading + 5 ppm of range) Resistance (4-Wire and -Wire ) ± (ppm of reading + ppm of range) Tempco/ C (0-50 C) Max Test 4 Hr 90 Day 4 Year 4 Without With Range Resolution Test Current Voltage Tcal ± C Tcal ±5 C Tcal ± 5 C Self-Cal Self-Cal 00 Ω 5 00 µω ma 00 mv kω mω ma V kω 0 mω 00 µa V kω 00 mω 0 µa V MΩ Ω 0 µa 0 V MΩ 0 Ω µa 0 V MΩ 6,7 00 Ω µ A 0 MΩ 0 V , , Perform offset nulling or add 00 mω to reading 5 With offset compensated ohms -0% to 0% tolerance 6 -wire ohms measurement only Relative to external calibration source 7 Overrange to > GΩ typical accuracy 5% Tcal = 4 Using internal self-calibration; specifications valid temperature at which last self-calibration or external over the entire operating temperature range calibration was performed Diode Test Range Resolution Test Current Accuracy 0 V 0 µv µa, 0 µa, 00 µa, ma Add 0 ppm of reading to 0 V DC voltage specifications Can be used to test p-n junctions, LEDs, or zener diodes up to 0 V -0% to 0% tolerance Up to 4.5 V measurement for ma test current Additional Noise Errors for DC Voltage, Current, Resistance Resolution Additional Noise Error 5 digits 0 ppm of range 4 digits 00 ppm of range digits 000 ppm of range DC Functions General Specifications Effective CMRR ( kω resistance in LO lead)... >70 db (DC, >46 Hz), with high-order DC noise rejection, 00 ms aperture Maximum 4-wire lead resistance... Use the lesser of 0% of range or kω Overrange... 05% of range except 00 V and A range DC Voltage input bias current... <0 pa at C (typical) Normal-Mode Rejection Ratio (NMRR) Readings/s NMRR Conditions 0 >00 db All noise sources >46 Hz 50 (60) >60 db 50 (60) Hz ±0. % With high-order DC noise rejection, 00 ms aperture With normal DC noise rejection; 0 ms (6.67 ms) aperture AC Specifications All speeds are with autozero disabled. Digits Reading Rate Bandwidth S/s Hz 00 khz 6.5 S/s 0 Hz 00 khz 6 5 S/s 00 Hz 00 khz 6 00 S/s 400 Hz 00 khz 5 ks/s 0 khz 00 khz AC System Speeds Range or function changes... 0/s Autorange time, VAC and AAC ms Trigger latency... µs Maximum trigger rate... khz AC Accuracy Specifications All AC accuracy specifications apply to 6 -digit resolution, signal amplitudes greater than % of range, and autozero enabled. AC Voltage Year ± (% of reading + % of range), ± 5 C Peak 40 Hz - 0 khz - 50 khz - 00 khz - Range Voltage Resolution Hz40 - Hz 0 khz 50 khz 00 khz 00 khz 50 mv ±05 mv 00 µv mv ±.05 V µv 5 V ±0.5 V 0 µv V ±05 V 00 µv 00 V ±450 V mv Tempco/ C (0 C-50 C) After self-calibration. Measurement aperture greater than 4/fL, where fl is the lowest frequency component of the signal being measured. Specification applies for DC coupling. Applies to signals > mv

4 Specifications AC Current Year ± (% of reading + % of range), 0-50 C Range (rms) Peak Current Resolution Burden Voltage(rms) Hz 0 khz 0 ma ±0 ma 0 na < 0 mv ma ±00 ma 00 na < 00 mv A ± A µa < 800 mv Measurement aperture greater than 4/fL, where fl is the lowest frequency component of the signal being measured. Specification is typical for the 5 khz 0 khz frequency range. There is no degradation in accuracy due to crest factor for signals up to the rated peak voltage/current or bandwidth. For high crest factor signals, increase range. Example: For a 500 mvrms signal with a crest factor between and 0, use the 5 V range. AC Functions General Specifications Input impedance... MΩ in parallel with 0 pf Input coupling... AC or DC coupling Maximum volt-hertz product... > 8 x 0 7 V-Hz Maximum DC voltage component VDC CMRR ( kω resistance in LO lead)... >70 db (DC to 60 Hz) Overrange... 05% of range except on 00 V and A ranges Frequency and Period Year Accuracy Input Range Frequency Range Period Range Resolution 0-50 C ±% of reading 50 mv to 00 V Hz to 500 khz s to µs 6 digits second gate time; input signal must be >0% of AC voltage input range Isolated Digitizer Specifications * Acquisition System Available sample rates....8 MS/s/n where n=,,,.8 x 0 6 Variable resolution... 0 to bits Available input range... ±00 mv to ±00 V Input coupling... DC or AC Input impedance... MΩ in parallel with 0 pf AC coupling low frequency (- db) Hz Maximum record duration... 0 s Timebase accuracy... 5 ppm Trigger Latency....8 µs Jitter... <600 ns Isolated Digitizer Accuracy Specifications All digitizer accuracy specifications apply to autozero enabled, DC coupling, after self-calibration, and.8 MS/s sampling rate General Specifications Self-calibration... Calibrates the PXI-4070 relative to high-precision internal voltage and resistance standards. No external calibration equipment required. Input protection VDC, resistance, diode... Up to 00 VDC VAC... Up to 00 VACrms, 450 VAC peak ADC and AAC....5 A, 50 V fast-acting user replaceable fuse Maximum common-mode voltage V Input terminals... Gold-plated low-thermal EMF solid copper Measurement-complete trigger pulse width... ms Input trigger pulse width... ms, with < m cable External calibration cycle... year recommended Power consumption... < W from PXI backplane Environment Operating temperature... 0 to 50 C Storage temperature to 70 C Relative humidity... up to 80% at 5 C Warm-up... hour to rated accuracy Dimensions, weight... 0 by 6 cm (.9 by 6. in.), 40 g ( oz) The AUX I/O connector is not isolated. It is not referenced to your measurement circuit. It is referenced to the ground of your computer. The digital signals on this connector should not operate beyond -0.5 to 5.5 V of your computer ground. The trigger signals are TTL-compatible. Safety The NI PXI-4070 was evaluated using the criteria of EN 600- A-:995 and designed to meet the requirements of the following standards for safety and electrical equipment for measurement, control and laboratory use: EN 600-:99/A:995, IEC 600-:990/A:995 UL 0-:99, UL -:994, UL :998 CAN/CSA c. no. 00.:99/A:997 Installation Category... II Pollution Degree... Electromagnetic Compatibility EMC/EMI... CE, C-Tick and FCC Part 5 (Class A) Compliant. Electrical Emissions... EN 550 Class 0 m. FCC Part 5A above GHz. Electrical Immunity... Evaluated to EN 66:998, Table Digitizer ± (ppm of reading + ppm of range) Flatness THD THD Year Tempco/ C Error Bandwidth khz signal, 0 khz signal, Range Tcal ±5 C (0-50 C) 0 khz (- db) - dbfs - dbfs 00 mv db 00 khz -04 db -78 db V db 00 khz -09 db -8 db 0 V db 00 khz -96 db -70 db 00 V db 00 khz -96 db -70 db 00 V db 00 khz -98 db -7 db Typical specification Tcal = temperature at which last self or external calibration was performed *Available with a future version of NI-DMM

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