Gebruiksaanwijzing /service van het product NI 9239 van de fabrikant National Instruments
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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.
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.
© 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 .
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.
© 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 .
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.
© 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.
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.
© 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.
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+ .
© 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.
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.
© 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.
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.
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.
© 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.
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.
© 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 ) . ......
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.
© 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 ...... ........... ...
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 ......... ...................... .......
© 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 ........... .....
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 ..............
© 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 .
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.
© 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.
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.
© 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.
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 .
© 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.
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.
© 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, Czec.
© 2007–2008 Nati onal Instruments Corp. All rights reserved. 374184E-01 Jul08 National Instruments, NI, n i.com, and LabVIEW are trademarks of National Instrument s Corporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments t rademarks.
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