Instruction/ maintenance manual of the product NI 9401 National Instruments
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OPERATING INSTRUCTIONS AND S PECIFICATIONS NI 9401 8-Channel, TTL Digital Input/Output Mo dule ni.com/manuals Deutsch Français.
NI 9401 Operating I nstruction s and Specificati ons 2 ni.com This doc u ment describes ho w to u se the National Instr u ments 9 401 and incl u des specif ications and pin assignments for the NI 9401. Vi s i t ni.com/info and enter rd s oftwarever s ion to det ermine which software yo u need for the mod u les yo u are u sing.
© National Inst ruments Corp. 3 NI 9401 Operating Instructi ons and Specific ations Safety Guidelines Operate the NI 9401 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 9401 Operating I nstruction s and Specificati ons 4 ni.com Caution S u bstit u tion of components may impair s u itability for Class I, Division 2. Caution For Zone 2 applications, install the system in an enclos u re rated to at least IP 54 as defined b y IEC 60529 an d EN 60529 .
© National Inst ruments Corp. 5 NI 9401 Operating Instructi ons and Specific ations Special Conditions fo r Marine Ap plications Some mod u les are Lloyd’ s Re gister (LR) T ype Approv ed for marine applications. T o verify Llo yd’ s Register cert ification, visit ni.
NI 9401 Operating I nstruction s and Specificati ons 6 ni.com Connecting the NI 9401 The NI 9401 has a 25-pin DSUB connector that pro vides connections for ei ght digital inp u t/o u tp u t channels.
© National Inst ruments Corp. 7 NI 9401 Operating Instructi ons and Specific ations Each channel has a DIO pin to which yo u can connect a digital inp u t or o u tp u t device. The eight DIO ch annels are in ternally referenced to COM, so yo u can u se any of the nine COM lines as a reference for the e xternal signal.
NI 9401 Operating I nstruction s and Specificati ons 8 ni.com Fig u re 2 ill u strates how to connect an SPI de vice to the NI 9401. In this e xample, the thre e channels assigned to o u tp u t signals are on one port and the channel assigned to an inp u t signal is on the other port.
© National Inst ruments Corp. 9 NI 9401 Operating Instructi ons and Specific ations Fig u re 3 ill u strates how to connect se v era l types of digital de vices to the NI 9401.
NI 9401 Operating I nstruction s and Specificati ons 10 ni.com Overcurrent Protection Overc u rrent protection on the NI 9401 allo ws only a specified amo u nt of c u rrent for switching DIO channels or so u rcing the o u tp u t load.
© National Inst ruments Corp. 11 NI 9401 Operating Instructi ons and Specific ations 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.
NI 9401 Operating I nstruction s and Specificati ons 12 ni.com Specifications The follo wing specif ications are typical for the rang e – 40 to 70 °C u nless otherwise noted. All v oltages are relat iv e to COM u nless otherwise noted. Input/Output Characteristics N u mber of channels .
© National Inst ruments Corp. 13 NI 9401 Operating Instructi ons and Specific ations Digital logic le v els Inp u t V oltage .......... ......... ........... ... 5.25 V max High, V IH ....... ......... ........... ... 2 V min Low , V IL ..... .......
NI 9401 Operating I nstruction s and Specificati ons 14 ni.com Maxim u m inp u t signal switching freq u ency b y n u mber of inp u t channels, per channel 8 inp u t channels ... ........... ......... ... 9 MHz 4 inp u t channels ... ........... .....
© National Inst ruments Corp. 15 NI 9401 Operating Instructi ons and Specific ations MTBF .......... ........... .................. ........ 1,244,763 ho u rs at 25 °C; Bellcore Iss u e 2, Method 1, Case 3, Limited P art Stress Method Note Contact NI for Bellcore MTBF specifications at other temperat u res or for MIL-HDBK-21 7F specifications.
NI 9401 Operating I nstruction s and Specificati ons 16 ni.com Safety Maximum Voltage 1 Connect only v oltages that are within the follo wing lim its. Channel-to-COM .. ........... ............ ..... ±30 V max on one channel at a time, Meas u rement Category I Isolation Voltages Channel-to-channel .
© National Inst ruments Corp. 17 NI 9401 Operating Instructi ons and Specific ations s u pply system that powers eq u ipment. This cate gory is for meas u rements of voltages from spec ially protecte d secondary circ u its.
NI 9401 Operating I nstruction s and Specificati ons 18 ni.com Hazardous Locations U.S. (UL) ........ ........... ......... ........... ... Class I, Division 2, Gro u ps A, B, C, D, T4; Class I, Zone 2, AEx nC IIC T4 Canada (C-UL) ............ .......
© National Inst ruments Corp. 19 NI 9401 Operating Instructi ons and Specific ations Operating h u midity (IEC 60068-2-56)....... ........... ............ 10 to 90% RH, noncondensing Storage h u midity (IEC 60068-2-56)....... ........... ............
NI 9401 Operating I nstruction s and Specificati ons 20 ni.com Electromagnetic Compatibility This prod u ct is designed to meet the req u ire ments of the follo wing standards of EMC for electrical eq.
© National Inst ruments Corp. 21 NI 9401 Operating Instructi ons and Specific ations ni.com/certification , search by mod u le n u mber or prod u ct line, and click the appropriate link in the Certification col u mn.
NI 9401 Operating I nstructions and Specifications 22 ni .com 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 Inst ruments Corp. 23 NI 9401 Operating Instructions and Specific ations telephone s u pport o u tside the United Stat es, contact yo u r local branch off ice: A u stralia 1800 300 800, A .
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An important point after buying a device National Instruments NI 9401 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought National Instruments NI 9401 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data National Instruments NI 9401 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, National Instruments NI 9401 you will learn all the available features of the product, as well as information on its operation. The information that you get National Instruments NI 9401 will certainly help you make a decision on the purchase.
If you already are a holder of National Instruments NI 9401, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime National Instruments NI 9401.
However, one of the most important roles played by the user manual is to help in solving problems with National Instruments NI 9401. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device National Instruments NI 9401 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
