National Instruments NI 9239 manuale d’uso

OPERATING INSTRUCTIONS AND S PECIFICATIONS NI 9229/9239 4-Channel, ±60/±10 V, 2 4-Bit Simultaneous, Channel-to-Chan nel Isolated Analog In put Modules ni.com/manuals Deutsch Français[...]

NI 9229/9239 2 ni.com This doc u ment describes ho w to u se the National Instr u ments 9229 and National Instr u ments 9239 and incl u des specif ications and terminal assignments. In t his doc u ment, the NI 9229 and NI 9239 are referred to incl u si v ely as the NI 9229/9239. V isit ni.com/info and enter rd s oftwarever s ion to determine which [...]

© National Instruments Corp. 3 NI 9229/9239 Safety Guidelines Operate the NI 92 29/ 9239 only as described in these operating instr u ctions. Hot Surface This icon denotes that the component may be hot. T o u ching this component may res u lt in bodily inj u ry . Safety Guidelines for Hazardous V oltages If hazardo u s voltages are connected to th[...]

NI 9229/9239 4 ni.com Caution When mod u le terminals are hazardo u s voltage LIVE (>42.4V pk /60 VDC), yo u m u st ens u re that devices and circ u its connected to the mod u le are properly ins u lated from h u man contact . Y o u m u st u se the NI 9971 connector backshell kit to ens u re that the terminals are not accessible. Fig u re 1 sho [...]

© National Instruments Corp. 5 NI 9229/9239 Safety Guidelines fo r Hazardous Loca tions The NI 922 9/9239 is s u itable for u se in Class I, Division 2, Gro u ps A, B, C, D, T4 hazardo u s locations; C lass I, Zone 2, AEx nA IIC T4, and Ex nA IIC T4 hazardo u s locations; and nonhazardo u s locations on ly . Foll o w these g u idelines if yo u are[...]

NI 9229/9239 6 ni.com Caution For Zone 2 applications, install a protection device between the inp u t signal and the NI 9229/9239 inp u t terminal. The device m u st pre vent the inp u t channel-to-COM voltage from exceeding 85 V if there is a transient overv oltage condition. Caution For Zone 2 applications, connected signals m u st be within the[...]

© National Instruments Corp. 7 NI 9229/9239 Special Conditions fo r Marine Applications Some mod u les are Lloyd’ s Register (LR) T ype Approv ed for marine applications. T o verify Lloyd’ s Register certif ication, go to ni.com/certification and search for the LR certificate, or look for the Lloyd’ s Re gister mark on the mod u le. Caution [...]

NI 9229/9239 8 ni.com Connecting the NI 9229/9239 The NI 9229/ 9239 provides connections for fo u r sim u ltaneo u sly sampled, isolated analog inp u t channels. Figure 2. NI 9229/923 9 T erminal Assignmen ts AI0+ AI0– AI1+ AI1– AI2+ AI2– AI3+ AI3– 0 1 0 1 0 1 0 1[...]

© National Instruments Corp. 9 NI 9229/9239 The NI 922 9/9239 has fo u r 2-terminal de tachable scre w-terminal connectors. Note Yo u m u st u se 2-wire ferr u les to create a sec u re connection when connecting mo re than one wire to a sin gle ter min al o n th e NI 9229/9239. Yo u can connect gro u nd-referenced or floating signal so u rces to t[...]

NI 9229/9239 10 ni.com Figure 3. Connecting a Grounded Signal So urce to the NI 9229/9239 Figure 4. Connecting a Floating Signa l Source to the NI 9229/9239 NI 9229/9239 Signal Source AI– + – AI+ NI 9229/9239 Signal Source AI– + – AI+[...]

© National Instruments Corp. 11 NI 9229/9239 The NI 9229/9239 analog inp u t channels are floating with respect to earth gro u nd and each other . The incoming analog signal on each channel is conditioned, b u ffered, and th en sampled by a 24-bit Delta-Sigma ADC. Each channel pro vides an independen t signal path and ADC, enabling yo u to sample [...]

NI 9229/9239 12 ni.com Wiring for High-Vib ration Applications If an application is s u bject to high vibrat ion, National Instr u ments recommends that yo u either u se ferr u les to terminate wires to the detachable scre w-ter minal connector or u se the NI 9971 backshell kit to protect the connections. Refer to Fig u re 6 for an ill u stration o[...]

© National Instruments Corp. 13 NI 9229/9239 Understanding NI 9229/9239 Filtering The NI 9229/9239 u ses a combination of analog and digital filte ring to pro vide an acc u rate representation of in-band signals while rejecting o u t-of-band signals. The filters di scriminate between signals based on the freq u ency range, or bandwidth, of the sig[...]

NI 9229/9239 14 ni.com Figure 7. T ypical Passband Flatness for the NI 9229/9239 F requency/Data Rate 0.5 0.4 0.025 0.000 –0.025 –0.050 0.3 0.2 0.1 0 Gain (dB)[...]

© National Instruments Corp. 15 NI 9229/9239 Stopband The filter signif icantly atten u ates all signals abo ve the stop band freq u ency . The primary goal of the fi lter is to pre vent aliasing. Therefore, the stopband freq u ency scales precisel y with the data rate. The stopband rejection is the minim u m amo u nt of att en u ation applied by [...]

NI 9229/9239 16 ni.com the mod u les m u st share a single master timebase so u rce. Refer to the software help for information abo u t conf ig u ring the master timebase so u rce for the NI 9229/9239. V isit ni.com/info and enter c s erie s doc for information abo u t C Series doc u mentation. The follo w ing eq u ation pro vides the av ailable da[...]

© National Instruments Corp. 17 NI 9229/9239 Sleep Mode This mod u le s u pports a low-po wer sleep mode. S u pport for sleep mode at the system le vel depe nds on the chassis that the mod u le is pl u gged into. Refer to the chassis man u al for information abo u t s u pport for sleep mode. If the chassis s u pports sleep mode, refer to the softw[...]

NI 9229/9239 18 ni.com Specifications The follo wing specifications a re typical for the range – 40 to 70 °C u nless otherwise noted. All v oltages are relativ e to the AI– signal on each channel u nless otherwise noted. The specific ations are the same for the NI 9229 and the NI 9239 u nless otherwise noted. Input Characteristics N u mber of [...]

© National Instruments Corp. 19 NI 9229/9239 Data rate range ( f s ) u sing external master timebase Minim u m ...................... ......... ..... 390.625 S/s Maxim u m ......... ............ ......... ..... 51.2 kS/s Data rates 1 ( f s ) . ........... ......... ......... ..... , n = 1, 2, …, 31 Inp u t vo ltage ranges (AI+ to AI–) 2 Overv [...]

NI 9229/9239 20 ni.com Acc u racy , NI 9229 Measurement Conditions Percent of Reading (Gain Error) Percent of Range * (Offset Error) Calibrated max (– 40 to 70 °C) ±0.13% ±0.05% Calibrated typ (25 °C, ±5 °C) ±0.03% ±0.008% Uncalibrated max (– 40 to 70 °C) ±1.2% ±0.55% Uncalibrated typ (25 °C, ±5 ° C) ±0.3% ±0.11% * Range eq u al[...]

© National Instruments Corp. 21 NI 9229/9239 Acc u racy , NI 9239 Inp u t noise NI 9229 ........... ........... ............ ..... 320 μ V rms NI 9239 ........... ........... ............ ..... 70 μ V rms Stability Gain drift ...... ........... ......... .......... ±5 ppm /°C Offset drift NI 9229 ......... .................. ..... ±150 μ V/?[...]

NI 9229/9239 22 ni.com Post calibration gain matc h (ch-to-ch, 20 kHz) ...... ........... ........... . 0.22 dB max Crosstalk (1 kHz) ......... ........... .......... –130 dB Phase mismatch (ch-to-ch) NI 9229 ......... ...................... ........ 0.045°/kHz max NI 9239 ......... ...................... ........ 0.075°/kHz max Phase mismatch [...]

© National Instruments Corp. 23 NI 9229/9239 Alias-free bandwidth ..... ......... .......... 0.453 · f s –3 dB prefilter band width ( f s = 50 kS/s). ......... ........... ............ ..... 24.56 kHz CMRR ( f in = 60 Hz) NI 9229 ........... ........... ............ ..... 116 dB NI 9239 ........... ........... ............ ..... 126 dB SFDR (1 [...]

NI 9229/9239 24 ni.com Power Requirements Power cons u mption fr om chassis Active mode .............. ......... ........ 740 mW max Sleep mode .......... ......... ........... ... 25 μ W max Thermal dissipation (at 70 °C) Active mode .............. ......... ........ 760 mW max Sleep mode .......... ......... ......... ..... 16 mW ma x Physical [...]

© National Instruments Corp. 25 NI 9229/9239 Safety Safety Voltages Connect only v oltages that are within the follo wing limits. Channel-to-earth gro u nd isolation Contin u o u s ............ ......... ............ 250 V rms , Meas u rement Category II W ithstand ................. ......... .......... 2,300 V rms , ver i fie d by a 5 s dielectri[...]

NI 9229/9239 26 ni.com Meas u rement Cate gory I is for meas u rements performed on circ u its not directly connected to the electrica l distrib u tion system referred to as MAINS vo ltage. MAINS is a hazardo u s liv e electric al s u pply system that powers eq u ipment. This ca tegory is for meas u rements of voltages from spec ially protecte d se[...]

© National Instruments Corp. 27 NI 9229/9239 Safety Standards This prod u ct is designed to meet the req u ire ments of the follo wing standards of safety for electrical eq u ipment for meas u rement, control, and laboratory u se: • IEC 61010-1, EN 61010-1 • UL 61010-1, CSA 61010-1 Note For UL and other safety certif ications, refer to the pro[...]

NI 9229/9239 28 ni.com Environmental National Instr u ments C Series mod u les are intend ed for indoor u se only b u t may be u sed o u tdoors if installed in a s u itabl e enclos u re. Refer to th e man u al for the chassis yo u are u sing for more information abo u t meeting th ese specif ications. Operating temperat u re (IEC 60068-2-1, IEC 600[...]

© National Instruments Corp. 29 NI 9229/9239 Shock and Vibration T o meet these specificati ons, yo u m u st panel mo u nt the system and either af fix ferr u les to the ends of the terminal wires or u se the NI 9971 backshell kit to protect the connections. Operating vibration Random (IEC 60068-2-64)......... 5 g rms , 10 to 500 Hz Sin u soidal ([...]

NI 9229/9239 30 ni.com Note For EMC compliance, operate this de vice with shielded cabling. CE Compliance This prod u ct meets the essent ial req u irem ents of app licable E u ropean directi ves, as amended for CE marking, as follo ws: • 2006/95/EC; Low-V oltage Directive (safety) • 2004/108/EC; Electromagneti c Compatibility Directive (EMC) N[...]

© National Instruments Corp. 31 NI 9229/9239 For additional en vironmental information, refer to the NI and the Environment W eb page at ni.com/environment . This page contains the en vironmental reg u lations and direct i ves with which NI complies, as well as othe r en vironmental information not incl u ded in this doc u ment. Waste Electrical a[...]

NI 9229/9239 32 ni.com Calibration Yo u can obtain the calibration cert ificate and information abo u t calibration services for th e NI 9229/9239 at ni.com/ calibration . Calibration interval ............... ........... . 1 year Where to Go for Support The National Instr u ments W eb site is yo u r complete reso u rce for technical s u pport. At n[...]

© National Instruments Corp. 33 NI 9229/9239 A u stralia 1800 300 800, A u stria 43 662 457990-0, Belgi u m 32 (0) 2 757 0020, Brazil 55 11 3262 3599, Canada 800 433 3488, China 86 21 5050 9800, Czech Rep u blic 420 224 235 774, Denmark 45 45 76 2 6 00, Finland 358 (0) 9 725 72511, France 01 57 66 24 24, Germany 49 89 7413130, India 91 80 41190000[...]

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