Instruction/ maintenance manual of the product VT1536A VXI
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Where to Find it - Online and Printed Information: System installa tion (har dware/soft ware) .......... .. VXIbus Co nfigura tion Guid e* HP VIC (VXI inst allation softwa re)* Module c onfigu ration and wiri ng .......... ........ ..... This Manual SCPI pr ogrammin g .
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VT1536A Isolated Digital Input/Output SCP 3 VT1536A Isolated Digit al Input/Output SCP Introduction The VT1536A is an eig ht-channe l Isol ated Digital I /O SCP . Channel s are swit ch configurabl e as eit her input or output on a channel-by- channel basis.
4 VT1536A Isolated Digital Input/Output SCP Identifying the Plug-on Y ou'l l find t he VXI T echnology par t number on the connector side o f the SCP .
VT1536A Isolated Digital Input/Output SCP 5 Configuring for Input Refe r again t o Figure 1 for the four va lid input thre shold, sw itch configur atio ns. Ta b l e 1 shows the "input zero" and "input one" level s for the nomina l thre shold settings .
6 VT1536A Isolated Digital Input/Output SCP Recomm en ded Signal Connectio ns Figure 3 shows th e recommended me thod of wiring isolate d digi tal I/O channels , as wel l as the ma ximum volt age limit ation s for the VT1536A. Figure 3 s hows the shield s connected direc tly to the VT1415 A/19A ground.
VT1536A Isolated Digital Input/Output SCP 7 Input and Output Characteristics This sec tion desc ribes the elect rica l charac teri stics of the SCP' s input an d output se ction s, as well as the oper ation of t he inpu t debounce t imers. Fi gure 4 shows a s implifie d schemat ic of one VT1536A chan nel.
8 VT1536A Isolated Digital Input/Output SCP Output V olt age Clamp The output section in corporate s a "c rowbar" pr otect ion type voltag e clamping diode. I n normal ope rati on with the relay volta ge at or be low 56 V olts peak, the diode has vir tual ly no ef fec t (other than a bout 10 nanoamper es of leakage cur rent).
VT1536A Isolated Digital Input/Output SCP 9 complete ly asynch ron ous with th e VT1415A/19A al gorit hm executi on rate as set by the T rigger Timer ( TRIG:T IM ER command) . Long deb ounce periods combine d with fast T rigger T imer setti ngs would have the algor ithm execu ting seve ral t imes fo r each input d ebounce -and-lat ch per iod.
10 VT1536A Isolated Digital Input/Output SCP Programming With SCPI Commands The SCPI comma nds s hown he re quer y the SCP's identi fi ca ti on st ri ng, and perfor m VT1536A chann el conf igurati on. The VT14 15A/19A doe sn't provide SCPI commands to rea d an in put channel or con trol an o utput channel.
VT1536A Is olated Digital Input/Output SCP 11 • INP:THR:LEV? retur ns a n umeric value which is one of 5 , 12 , 24, 48 or 0 (zero) where zero means t hat t he channel is conf igure d as an out put and no n-zero values i ndicat e the inpu t thr eshold in vol ts.
12 VT1536A Isolated Digital Input/Output SCP Choose a va lue fr om the “ Minimum Period” column i n Ta b l e 2 that is longer t han your input si gnal’ s undesired t ransit ion per iod when you want to e xclude these short ter m in put signal tran sitions .
VT1536A Is olated Digital Input/Output SCP 13 Note The INP:DEB:TIME genera te th e error 31 08, "E153 6 debounc e - ea ch refer enced 4 Ch ba nk mus t cont ain at least o ne in pu t". T his er ro r indi cates that you tr ied t o set a debounc e t ime for a bank of channe ls th at contai ns no input co nfigur ed channel .
14 VT1536A Isolated Digital Input/Output SCP Programming with the VT14 15A/19A Algorithm Language The foll owing ex ample sho ws the c ommand sequ ence (p latf orm/la nguage independ ent) to transf er the digital state s from t he lower 4 channe ls (in puts) to the up per 4 ch anne ls (ou tputs ).
VT1536A Is olated Digital Input/Output SCP 15 S pecif ication s SCP Power Supply Req uirement s +5 Vmax +24 Vtyp +24 V max -24 Vtype -24 Vmax 0.072 not used not used Output Characteris tics (see also .
16 VT1536A Isolated Digital Input/Output SCP Notes:.
An important point after buying a device VXI VT1536A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought VXI VT1536A 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 VXI VT1536A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, VXI VT1536A you will learn all the available features of the product, as well as information on its operation. The information that you get VXI VT1536A will certainly help you make a decision on the purchase.
If you already are a holder of VXI VT1536A, 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 VXI VT1536A.
However, one of the most important roles played by the user manual is to help in solving problems with VXI VT1536A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device VXI VT1536A 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
