Manuale d’uso / di manutenzione del prodotto VX4801 del fabbricante Tektronix
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User Manual VX4801 Pr ogrammable Digital I/O Module 070-9153-03 This document applies for firmware version 1.00 and above..
Copyright T ektronix, Inc. All rights reserved. T ektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved.
W ARRANTY T ektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years from the date of shipment.
EC Declaration of Conformity We T ektronix Holland N.V . Marktweg 73A 8444 AB Heerenveen The Netherlands declare under sole responsibility that the VX4801 meets the intent of Directive 89/336/EEC for Electromagnetic Compatibility .
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VX4801 Programmable Digital I/O Module iii General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. Only qualified personnel should perform service pr ocedur es.
General Safety Summary iv VX4801 Programmable Digital I/O Module Safety T erms and Symbols These terms may appear in this manual: W ARNING. W arning statements identify conditions or practices that could r esult in injury or loss of life.
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Output high voltage (V oh ) min typ max units I o = –20 A l o = –6 mA Output low voltage (V ol ) l o = 20 A l o = 24 mA Output low current (l ol ) Input high voltage (V ih ) Input low voltage (V il ) * Input current (l in ) T ri-state leakage current (l oz ) 4.
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VX4801 Programmable Digital I/O Module A–19 Appendix E: Performance V erification 123 This procedure verifies the performance of the VX4801 Programmable Digital I/O Module. The test sequences may be performed in your current VXIbus system if it meets the requirements described in T able 2.
Appendix E: Performance V erification A–20 VX4801 Programmable Digital I/O Module NOTE . Commands to the VX4801 may be enter ed in upper or lower case. However , to avoid confusion between the alphanumeric characters; e.g. one (1) and L or zer o( 0) and o, all commands ar e shown in the case which pr ovides the gr eatest distinction.
Appendix E: Performance V erification VX4801 Programmable Digital I/O Module A–21 34 18 1 Byte 3 LSB Byte 2 MSB Byte 5 LSB GND Byte 0 LSB DAK 6 DA V 5 GND GND GND 1 34 39 50 33 17 1 14 25 13 8 Byte .
Appendix E: Performance V erification A–22 VX4801 Programmable Digital I/O Module VX4801 Under-T est Configuration In order to perform this procedure, the VX4801 under-test must be installed in an approved VXIbus system. At a minimum, the system must contain the elements listed in T able 2.
Appendix E: Performance V erification VX4801 Programmable Digital I/O Module A–23 T est Record Photocopy the T est Record, and use it to record the performance verification results for your module.
Appendix E: Performance V erification A–24 VX4801 Programmable Digital I/O Module Self T est The VX4801 includes a built-in self test function (BITE) which is automatically executed each time the power is turned on and when the Internal Self T est (S) command is issued.
Appendix E: Performance V erification VX4801 Programmable Digital I/O Module A–25 NOTE . If you ar e using National Instruments NI-488.2 softwar e you may wish to select the buffer 1 mode to allow mor e comfortable viewing of the ASCII r esponse. Just type buffer 1.
Appendix E: Performance V erification A–26 VX4801 Programmable Digital I/O Module (Observe: VX4521 Slot 0 indicates S in 2nd digit) NOTE . The zer o length r ead serves to un-addr ess the Slot 0 controller which allows it to detect the VXIbus interrupt and assert the SRQ.
Appendix E: Performance V erification VX4801 Programmable Digital I/O Module A–27 2. Perform a self test and query for any error codes (in ASCII format) with the VX4801 device-under-test and the Sla.
Appendix E: Performance V erification A–28 VX4801 Programmable Digital I/O Module 4. T o verify the even byte data inputs and the odd byte data outputs, reset the VX4801 to its power-up state and th.
Appendix E: Performance V erification VX4801 Programmable Digital I/O Module A–29 (Observe: response of 00FF00FF00FF) b.
Appendix E: Performance V erification A–30 VX4801 Programmable Digital I/O Module (Observe: response of 00FF00FF00FF) d.
Appendix E: Performance V erification VX4801 Programmable Digital I/O Module A–31 This test sequence verifies that data can be transferred to and from the VX4801 using the four handshake signal lines Data Ready (DRD), Data Acknowledge (DAK), Ready for Data (RFD), and Data A vailable (DA V).
Appendix E: Performance V erification A–32 VX4801 Programmable Digital I/O Module d. Set the Slave to initialize byte 2 with an Output Data value of 01 (asserts RFD to the VX4801) and verify that the VX4801 correspondingly asserts DA V : (Observe: VX4801 DA V light on) e.
Appendix E: Performance V erification VX4801 Programmable Digital I/O Module A–33 e. Send a byte 5 input command to the VX4801 and verify that the DAK light is on.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Tektronix VX4801 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Tektronix VX4801 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Tektronix VX4801 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Tektronix VX4801 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Tektronix VX4801, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Tektronix VX4801.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Tektronix VX4801. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Tektronix VX4801 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
