Accesorios para el NI PXI-5404

Cordial saludo,
necesito saber si es indispensable comprar accesorios para que el producto generador de frecuencias NI PXI-5404, pueda ser puesto en funcionamiento. y cuales son esos accesorios?
Gracias
¡Resuelto!
Ir a solución.

Hola Andreamar;
Los accesorios que se recomiendan para esta tarjeta son los cables SMB a coaxial o a BNC (con o sin recubrimiento) para poder conectar tu generador a un circuito...
Estos cables son opcionales, pero se recomienda usarlo para asegurar que en cuanto te llegue la tarjeta puedas comenzar a trabajar con ella, además de que tienen una resistencia conocida de 50 Ohm.
El otro producto recomendado es un multiplexor; este serviría para "incrementar" el número de canales, es decir haría la función de un switch para que puedas conectarte a varios circuitos simultáneamente.
Te recomendaría ocmo mínimo, pedir un par de cables a BNC o Coaxial
Exito

Similar Messages

PXI-5404 Voltage Output

I want to use the PXI-5404 to generate a frequency sweep and am executing the example found here: http://zone.ni.com/devzone/cda/epd/p/id/3820
Frequency sweeping works well for the SINE output, but the voltage levels are much lower than expected. The SINE output for CH 0 is at a maximum ±30 mV, and the CLKOUT output for CH 0 is a DC signal at whichever high voltage I specify.
Please help.
Thanks,
Robert

Hi Robert,
I have tested the PXI-5404 and PXI-5105 on our test chassis and see that the output works properly. For this test, I had connected the CH 0 SINE output to CH 0 of the PXI-5105 and CH 0 CLOCK Out to CH 1 of the PXI-5105. CH 0 impedance was set to 50 Ohms and CH 1 to 1 MOhm.
So it appears that there is either an issue with your SMB connection or the PXI-5404 card itself. You mentioned that you tried a different scope and saw the same results so I assume that the problem is not with the PXI-5105. If you try another cable and ensure a proper connection, but still see the same results you more than likely have a broken PXI-5404. In this case you can create an RMA request by calling 1-866-ASK-MYNI (1-866-275-6964).
Brian G.
Brian G.

Je veux faire réparer un board PXI-6733 (P/N: 778512-01)

Bonjour,
J'aimerais savoir la procédure pour faire réparer une carte PXI. Est-ce que je dois avoir un numéro de RMA? À quelle adresse dois-je envoyer le board endommagé?
Mon board est un PXI High-Speed Analog Output Card (P/N: 778512-01)
Vous pouvez me contacter à l'adresse suivante: [email protected] ou au 514-335-4200 ext.2064
Merci beaucoup,
Benoit Létourneau

Bonjour Benoît,
Vous pouvez appeler notre département RMA directement au 877-493-2406. Gardez à l'esprit qu'ils parlent anglais.
Tim O
Applications Engineer
National Instruments

En mi cámara Nikon S9300 no puedo utilizar los accesorios para bajar fotos al ipad porque la tarjeta no la reconoce y el USB dice que consume demasiada energía. Siempre los había utilizado, no se sí Apple hizo algún cambio.

En mi cámara Nikon S9300 no puedo transferir las fotos al Ipad utilizando los accesorios, la tarjeta no la reconoce y el USB dice que utiliza mucha energía. Siempre los había utilizado y no se sí Apple hizo algún cambio en estos accesorios. Para mi cámara Olympus si deja transferirlas.

El iPad no puede leer memorias SDXC si estan formateadas como XFAT directamente. Asegurate de que esten formateadas como Fat32.
El iPad tiene un voltaje limitado para los accessorios. Si la camara intenta cargarse de el, presenta el error de mucha energia. Para resolverlo se puede conectar un Hub USB con conexion a la corriente electrica para que provea de energia adicional a la camara.
iPad: Cómo usar el kit iPad Camera Connection
http://support.apple.com/kb/HT4101?viewlocale=es_ES

Chassis PXI (question débutant)

Bonjour a tous,
Voila j'aurais une petite question concernant le développement d'application avec un chassis PXI.
Hbituellement pour la réalisation de mes banc de test, je controle des appareils "standard" mais la pour mon nouveau projet je me suis dit que j'allais passé par un chassis PXI-e.
Donc voila, je dispose d'un chassis PXIe-1071 équipé d'une carte scope, une carte géné et d'une matrice.
Comme je n'ai encore jamais travaillé avec ce type de matériel, je me demande quelle méthode appliquer pour développer mon application. Es ce que je dois installer l'abview directement sur le chassis PXI le temps du développement du soft et une fois le développement figé, créer un exécutable et désinstaller labview du chassis ou alors connecter mon chassis a mon PC habituel de labview et controler mon chassis a partir de celui ci? dans ce cas, serais je obligé d'installer les drivers de mes carte (scope, géné matrice) sur mon PC de développement habituel?
Ces question vont peute etre vous paraitres stupide mais comme je débute avec ce type de matériel j'aimerais avoir l'avis, la méthode de travail de personne plus expérimenté.
Merci d'avance pour vos réponses.
Résolu !
Accéder à la solution.

Salut,
As-tu un contrôleur dans ton chassis (dans le slot de gauche) ? Si oui, l'utiliseras-tu sous Windows, ou sous OS temps réel ?
Si tu l'utilises sous Windows, installe LabVIEW dessus, sans quoi, tu n'auras pas la possibilité de visualiser les variables avec des sondes d'observation.
Une fois ton projet finalisé, la license de développement n'est plus nécessaire. Tu pourras donc la supprimer, et te contenter du moteur d'exécution de LVet d'un exécutable
A+
Mathieu Steiner, Test System Engineer, Safran Engineering
CLD, ISTQB

Target VI stops before being commanded using shared variable

All,
I decided to post this in general since it deals mostly with shared variables however I am working with a RT target so feel free to move it to another forum.
I originally posted a problem I was having with the RT Module Getting Started example, regarding the 1950679023 error, and trouble shooting led me to create the simplest test project I could think of. (I know you all want a link to the VIs but my company does not allow me to access internet file sharing sites to upload data so bare with me.)
NOTE: This is NOT an RT project. Just deployed on an RT target.
In Project Explorer I have Host.vi under " My Computer " and Target.VI and 3 networked-published shared variables (call them A,B,C here for simplicity) with RT-FIFO checked, under my RT target.
Host.vi is a single while loop with a 0.5sec time delay express VI. The loop contains (along w/ the time delay) 1 numeric control wired to SV A, 1 numeric indicator wired to SV B, and finally a Stop button wired to SV C plus the conditional term (stop if True). SV A is configured as write, SV B as read, and SV C as write.
Target.vi is a single while loop with a 0.5sec time delay express VI. The loop contains (along w/ the time delay) a numeric add function wired to a constant double and SV A configured as read. Also, SV C is wired to the conditional term configured as read (stop if True). The VI adds the two numbers, one of which is controlled by the Host.vi using SV A, and sends the results to Host.vi using SV B until the Stop button is pressed on Host.vi and sent back to Target.vi using SV C.
I successfully ran this project (which included my always present 1950679023 error). Then changing no code but merely redeploying/running it again right after or through out the course of many other project deployments I get incorrect data on Host.vi. Basically sometimes it would work, sometimes it wouldn't; having changed NO code. First discovery was that Target.vi would automatically stop after running ~ 1sec since deploying/running on the target and before I could disconnect and open/run Host.vi. I then deployed/ran Target.vi with a probe on the wire between SV C and the conditional term and highlight execution running. After an average of 3 runs through the loop the SV C would automatically send out a True signal even though I never open/run Host.vi. How can shared variable C, which is write controlled by Host.vi, automatically change it's state like that when I never even open/run Host.vi?
Another interesting observation is, If I first open/run Host.vi and then deploy/run Target.vi, the program ALWAYS works. But those steps go against my limit understanding of running VIs with shared variables on a target, which I got from NI's RT Module Getting Started Guide? I am going to have a hard time developing anything useful with these shared variables if I can not get the LV RT Guide example and this simple VI working. Any help would be great.
Thanks
JD
P.S. I've noticed this error message a few times during deploying/running either the Host.vi or Target.vi. The error is not consistent; sometimes I see sometimes I don;t.:
error-2147220727 (Hex 0x80040309)
The client process cannot communicate with the configuration server process. If this problem persists please note the steps you performed that led to this error and contact technical support.
PXI-1045,PXI-8196 RT,PXI-4220 (slot 2),(2) PXI-6259 (slot 3 and 4),PXI-5152 (slot 5),PXI-2585 (slot 6),PXI-5404 (slot 7)
LV 8.2.1, RT 8.2, DAQmx 8.5, MAX 4.2, VISA 4.1,
Pharlap OS ver.12.0, PH_EXEC ver. 8.2

Thanks for the responses, (sorry this is going to be long)
- First question is how do you initialize a shared variable (SV)? I don't have the DSC module, which I know has an initial value parameter. The SV is configured as a read and doesn't have any inputs, so am I missing something on the way to initialize it? I know the boolean defaults to False, which is good for my application. Also, right clicking on the SV doesn't bring up any obvious solution? Help if I am lost. Also, all my code is inside the loop (both the RT.vi and Host.vi), nothing is outside the loop.
- I think I learned something through some trial and error. I made this test VI project even simpler by just having an incremental counter using shift registers inside the RT.vi while loop. The results of that counter are sent out, by way of a network-published SV, to the Host.vi. This network-published SV is located under the target within the Project Explorer. I temporarily got rid of the boolean SV, which was used to stop both the RT.vi and Host.vi. It was that boolean SV that gave me all the problems.
This new test VI works consistently (also as a stand alone application, which was a first for me). My thoughts are that the issues had something to do with not "completely" removing all previous run instances of the VI and associated SVs/library from the RTs memory. I think I was getting old buffer data or SV corruption when, on my first test VI, would re-run the RT.vi and have the boolean SV inexplicitly switch states from False to True, even though the write controlled instance on Host.vi wasn't even running. I now undeploy everything (and check the Variable Manager) to make sure I have a clean sheet when re-running the VI. Now that brings up a question, is undeploying the only, or proper, way to clear the RT's memory?
Anywho, I reintroduced the boolean SV into this new edition of the test project (read instance on RT.vi and write instance on Host.vi, while "hosted?" under the target in the Project Explorer) and everything works (although I still get that 1950679023 error once in a while when running for the first time). Meaning, I deploy the RT.vi then disconnect, then run the Host.vi and get valid data, then I press stop and both VI's stop. I then clear out the RT memory (I think all of it?) using undeploy and then repeat. Doing this I get consistent, valid results. If this seems like a learning experience for me please let me know, I don't want something to "work" just by accident.
- To answer the second reply: 1) all the SVs where created under the target in the Project Explorer. Also, I have not unchecked auto-deploy or tried deploying manually, but will give it a try. That brings up a great point, most of NI's data on SVs is "technical specification" like and not very in depth for something so complex. I have not been able to find any "tips/tricks" or "best practices", like trying to deploy manually. Is it because SVs are still new?? Also, a frustrating thing is that NI's step by step tutorials treat SVs like they are simple and fool proof, but following their instructions to the T I get errors. They leave out all the little nuances of correctly working with SVs and so it creates a steeper learning curve. Enough of my rant.
Thanks again for the responses and any more help to come.
JD
PXI-1045,PXI-8196 RT,PXI-4220 (slot 2),(2) PXI-6259 (slot 3 and 4),PXI-5152 (slot 5),PXI-2585 (slot 6),PXI-5404 (slot 7)
LV 8.2.1, RT 8.2, DAQmx 8.5, MAX 4.2, VISA 4.1,
Pharlap OS ver.12.0, PH_EXEC ver. 8.2

What versions of NI-VISA are compatible with CVI 7.1.1

I am stuck using CVI version 7.1.1 due to a customer requirement and need to use VISA functions in a new application. I do not have access to the original driver disk so I don't know exactly which version of VISA to use with this version of CVI.
I was under the assumption that I could download the latest version (4.6.2) and it would be backwards compatible but it does not work for me on two different PCs. In both cases, I get a general protection fault if I try to execute an application that uses any of the VISA functions. Both PCs use Windows XP.
So I need to know which version of VISA is compatible with Win XP and CVI 7.1.1 and will not give me a GPF.
To further complicate things, I also need to know which versions of NI-FGEN, NI-RFSG, NI-HSDIO, and NI-DAQ will work with my setup. I am using PXI-5404, PXI-5651, and PXI-6562 hardware.
Martin Fredrickson
Test Engineer
Northrop Grumman
Advanced Systems and Products
San Diego, CA 92128

The attached screen shot shows the GPF error message I am getting.
I have tested this application on three separate machines with the exact same result. One of them has VISA 4.5 installed, the others 4.6. All of them have CVI 7.1.1 and TestStand 3.1
I get the error if I try to run this application and it has ANY VISA function in it. As soon as I remove them, it runs OK.
All I am trying to do is use the VISA functions to access an RS-232 port. I have done this before without running into any kind of problems.
I need a solution to this problem.
For what it is worth, the calls I am making so far are (if I include any of them and try to run, it gives a GPF):
status = viOpenDefaultRM (&rsrcMgr);
status = viOpen (rsrcMgr, comPortDescriptor, VI_NULL, VI_NULL, &comPort);
status = viSetAttribute (comPort, VI_ATTR_WR_BUF_OPER_MODE, VI_FLUSH_ON_ACCESS);
status = viSetAttribute (comPort, VI_ATTR_RD_BUF_OPER_MODE, VI_FLUSH_ON_ACCESS);
status = viSetAttribute (comPort, VI_ATTR_ASRL_BAUD, baudRate);
status = viSetAttribute (comPort, VI_ATTR_ASRL_DATA_BITS, dataBits);
status = viSetAttribute (comPort, VI_ATTR_ASRL_PARITY, parity);
status = viSetAttribute (comPort, VI_ATTR_ASRL_STOP_BITS, stopBits);
status = viSetAttribute (comPort, VI_ATTR_ASRL_FLOW_CNTRL, flowControl);
status = viSetAttribute (comPort, VI_ATTR_ASRL_DISCARD_NULL, VI_FALSE);
status = viSetAttribute (comPort, VI_ATTR_ASRL_END_IN, VI_ASRL_END_NONE);
status = viSetAttribute (comPort, VI_ATTR_ASRL_END_OUT, VI_ASRL_END_NONE);
Martin Fredrickson
Test Engineer
Northrop Grumman
Advanced Systems and Products
San Diego, CA 92128
Attachments:
gpf_with_visa_calls.PNG ‏6 KB

Descuento por paquete compra en tienda de miami

hola somos extranjeros planeamos ir de compras en breves a la cuidad de miami,, teniamos pensado comprar dos ipad mini de 249,99 cada uno y una notebook dell ispiron de 649,99. y tal ves algunos accesorios para las compras. queriamos saber si nos podrian brindar algun descuento por el paquete de compras realizadoy en dicho caso en que tienda de miami podriamos comprarlo muchas gracias

Hola RafaBianchi-
Te agradecemos mucho el interés que estas demostrando en realizar tu siguiente compra con Best Buy. En el momento, Best Buy no tiene descuentos para los artículos que estás buscando. Mi mejor recomendación es de visitar una tienda de Best Buy para ver sus promociones actuales, o visitar BestBuy.com.
Espero que disfrutes tu viaje,
Karina|Social Media Specialist | Best Buy® Corporate
Private Message

Three-axis motion and piezoelectric actuators

Carlos
Hello.
My name is carlos, i am new to this forum.
I have a need to move a mirror, pointing with a laser, to the coordinates that I enter using axes, x y.
Use three-axis motion and piezoelectric actuators to actuate the mirror.
There is one "vi" to entering the coordinates xy of two axes of movement for me the three actuators tripod.
The output would be a DAQ card with analog outputs to control the three axes.
Labview9 SP1
Sincerely,
Carlos

Hola Carlos,
la aplicación que planteas es perfectamente viable. El único inconveniente que veo es utilizar una tarjeta de adquisición de datos (DAQ Card) para controlar el movimiento de los 3 ejes. Para ello, existe hardware dedicado en arquitectura PCI para PC y PXI. En concreto, me refiero a la serie NI-73xx para control de movimiento, como por ejemplo:
http://sine.ni.com/nips/cds/view/p/lang/es/nid/7191
Puedes configurar tu sistema en http://www.ni.com/advisor/esa/ y ver qué productos te encajan más en cuanto a prestaciones y coste. Puedes llamar a National Instruments España en el 91 640 0085 para que un ingeniero de ventas te ayude a realizar la configuración en función de los requisitos que tengas.
Un saludo.
Jesus

DMM PXI 4070 synchronisation trigger généré par PXI6229 (Daq M)

Bonjour,
Je cherche a synchroniser 2 DMM PXI 4070 avec un trigger interne.
Les 4070 ne génerant pas de trigger, je me tourne vers une Daq PXI6229 pour le générer.
ci-joint, le code qui ne fonctionne pas, mais qui donne une idée de la fonction...
Quelqu'un pourrait-il me dire ou est l'erreur ?
Les entrées trigger des PXI 4070 sont notifié TTLx ; faut-il router le signal généré par la 6229 ? et sur quelles lignes ? (dev1/pxi_trig0) ?
Merci.
Ludis
Résolu !
Accéder à la solution.
Pièces jointes :
DMM_PXI4070_Sync.Trig_PXI6229.vi ‏30 KB

Bonjour,
La méthode proposée est correcte: il s'agit en effet de générer un signal créneau avec la sortie compteur0 de la carte DAQ et d'utiliser ce signal créneau en tant que trigger pour les 2 cartes DMM.
Le routage du signal peut se faire en externe (cabler physiquement le terminal Counter0 Output de la carte DAQ à l'entrée TRIG de la DMM et choisir cette entrée au niveau de la configuration du trigger de la DMM) ou en interne.
Pour router le signal en interne, il faut utiliser un noeud de propriété de voie pour la tâche compteur afin de reconfigurer le terminal de sortie (voir pièce jointe). On choisira par exemple "PXI Trigger line 0". Au niveau de la configuration du trigger sur la tâche DMM, il faudra choisir en tant que source de trigger la même ligne (TTL0 = PXI Trigger Line 0).
Cordialement,
Thomas B. | CLAD
National Instruments France
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>> Inscrivez-vous gratuitement aux Journées Techniques : de l'acquisition de données au contrôle/com...
Pièces jointes :
Reconfiguration du terminal de sortie du compteur à l'aide d'un noeud de prop.png ‏20 KB
Counter Pinout - terminaux par défaut.png ‏40 KB
trig source property.png ‏65 KB

Preciso de um conversor de 4 a 20mA para GPIB. Voces fornecem

Gostaria de saber se vocês fornecem uma solução para medição de sinal de corrente padrão de instrumentação de campo (4 a 20mA) para protocolo IEEE 488 (GPIB). Um cartão de conversão ou algo deste tipo?

Acho que acidentalmente você colocou a sua pergunta no grupo de TestStand, que é um Software utilizado para automação de testes.
Basicamente a linha de produtos da National inclui entre outros produtos, instrumentos/placas para serem acoplados ao seu micro, chassis PXI ou fieldpoint bus.
Para leitura de correntes e tensões, a National Instruments oferece o Digital MultiMeter NI-4060 que é uma placa padrão PCI que quando acoplada ao seu micro pode efetuar leituras de corrente, tensão e resistência.
Na área de GPIB a National Instruments oferece placas GPIB e conversores de bus tipo GPIB-USB, GPIB-Ethernet, etc.
O catalogo online pode ser acessado a patir da página www.ni.com
Além disso, existe um grupo de discussão específico para instrume
ntos GPIB em exchange.ni.com. Em geral as perguntas são feitas em inglês, para que um maior número de usuários tenha acesso as perguntas e respostas.
Roberto Piacentini
Applications Engineer
National Instruments
www.ni.com/support

Rio de Janeiro, 12 de Novembro de 2011. Assunto: Garantia iPhone Apple 4 16G      Para : Itautec S/A - Área de Garantia iPhone Apple      Prezados, Venho por meio desta informar todos os Protocolos abertos na TIM / ITAUTEC para garantir os meus direito

Rio de Janeiro, 12 de Novembro de 2011.
Assunto: Garantia iPhone Apple 4 16G
Para : Itautec S/A - Área de Garantia iPhone Apple
Prezados,
Venho por meio desta informar todos os Protocolos abertos na TIM / ITAUTEC para garantir os meus direitos. Meu telefone pifou no dia 28 de outubro e, desde então, estou sem serviço de telefonia móvel. Tentei restaurar via itunes e não tive sucesso. Só na minha família, utilizamos cinco linhas da TIM. Portanto, ficar sem o meu contato está me causando enormes despesas extras. Desde que informei à TIM do meu problema, há quase 15 dias, não tive uma solução. Os atendentes do SAC e da loja própria da TIM no shopping Rio Sul divergiram de conduta todas as vezes que liguei solicitando uma solução para o meu caso. Somente depois de inúmeras tentativas – como se pode ver abaixo, pelo número de protocolos , fui contactado pela área responsável pela garantia do iPhone como deveria proceder.
De todo modo, já acionei meu advogado, que está ciente de todas as minhas tentativas de comunicação com a TIM /ITAUTEC para resolver meu problema. O iPhone não é um aparelho barato – inclusive, ainda estou pagando por ele – e, como consumidor, estou me sentindo extremamente lesado e mal orientado. Tenho cinco aparelhos da Apple e, em todas as ocasiões em que necessitei suporte da autorizada da empresa no Brasil, fui prontamente atendido. Lamento não estar tento a mesma sorte com o iPhone 4 16G que comprei no Brasil e espero que, a partir de agora, tenha meu direito de consumidor preservado. Conforme solicitado, o aparelho está sendo sem nenhum acessório – confirmo, nenhum arranhão. Desde já, agradeço a atenção e a brevidade na solução.
Seguem os números dos Protocolos :
1.          TIM SAC - 2011236846910, aberto no dia 28/10/2011 as 13:21 – Atendente Jane.
2.          ITAUTEC 12159036, aberto na loja do Shopping Rio Sul as 19:37 – Atendente Tayllon TIM / junto ao atendente da ITAUTEC Josue – sem ser informado do número de Protocolo da Loja.
3.          TIM SAC – 2011242336839, aberto no dia 05/11/2011 as 12:23 – Atendente Sandra.
4.          TIM SAC– 2011242367992, aberto no dia 05/11/2001 as 12:23, solicitando a gravação do Protocolo 2011242336839 – Atendente Sandra.
5.          TIM SAC– 2011242339346, aberto no dia 05/11/2001 as 12:23, solicitando a gravação do Protocolo 2011236846910 – Atendente Sandra.
6.          TIM SAC – 2011244015875, aberto no dia 07/11/2001 as 19:48, solicitando status dos protocolos anteriores e contando a mesmo ocorrido e solicintando a gravação sob protocolo 2011244042776 – Atendente Claudine
7.          TIM SAC – 2011244042776, aberto no dia 07/11/2001 solicitando a gravação do Protocolo 2011244066887 – Atendente Debora.
8.          ANATEL – 16059332011, aberto no dia 08/11/2011 informando o descaso da TIM em relação ao Protocolo 2011236846910, aberto no dia 28/10/2011 as 13:21 pela atendente Jane.
9.          TIM na Loja do Shopping Rio Sul – 2011244949863, aberto no dia 08/11/2011 as 18:58, solicitando informações sobre o Protocolo com a Itautec de número 12159036.
10.          TIM SAC – Protocolo não informado, aberto no dia 10/11/2011 – Atendente Nilse , tendo a ligação pederdida.
11.          TIM SAC - 2011246801430, aberto no dia 10/11/2011 as 22:04 – Atendente Alber
12.          TIM SAC – 2011246815029, aberto no dia 10/11/2011 as 22:23, sem atendimento.
13.          TIM SAC – 2011246820659, aberto no dia 10/11/2011 as 22:32, sem atendimento.
14.          TIM SAC - 2011246821405, aberto no dia 10/11/2011 as 22:34 – Atendente Leonardo.
Este protocolo classificado como Base , originou mais 3 Protocolos, a saber:
1.          Protocolo informando defeito do iPhone Apple 4 16G – 2011246833800.
2.          Protocolo informando Reclamação pelo atendimento da Loja da TIM do Shopping Rio Sul Atendente / Gerente – 2011246837963, sobre o Protocolo 2011244949863.
3.          Protocolo 2011246842552 solicitando a gravação do Protocolo base e dos demais – 2011246821405.
Atenciosamente,
Fernando Alves de Oliveira
Service Transition Management, Vale Account
Hewlett-Packard Company
Praça 15, nº 20 - 5º andar
CEP 20010-010 - Centro
Rio de Janeiro – RJ
Telefone: +55 21 3088 - 5404
Cel : +55 21 7292-5896
E-mail: [email protected]

(complementing Fernando`s complaint with another complaint):
I don`t know if you know this, but the warranty services for the Iphone in Brazil are the worst ever (that I have ever experienced) - something that I have never imagined from a company that is Apple's authorized warranty supplier. I buy Apple's products since 2008 and luckly I have never experienced any malfunction, but still, I always thought that if someday any of your products should show any trouble it would be very well cared by Apple. Unfortunately that's not what has been happening with iPhone warranty in Brazil. I`m sorry to tell you this, but I don`t know who else should I call, before going to the Justice to have my iPhone fixed. My story follows...
On the August, 28th of this year I bought an iPhone 4 16GB Black from a TIM store (TIM is a mobile company in Brazil) at BarraShoppingSul in Porto Alegre, Brazil. By November 21 or 22, the "Home" buttom stoped working, suddenly, without any drops or accidents - it just stopped working at all. So the following days I did two full formats through iTunes, turned on or off the phone several times and nothing happened.
I searched in Apple's web page what to do and I found out that I had to contact my phone operator and so I did. At November, 22th by 11:50 pm I called TIM (by the number *144) and asked them about what to do. The attendant told me that he didn't know because their system was off-line and that TIM would make contact the other day (protocol number: 2011254975382). The other day, they didn't call me by the morning and as I was already deeply annoyed by the problem of my phone I decided to call them again. So I called Tim at 1:11 pm at November, 23th (protocol number: 2011255278407), asked the attendant about what should I do to use my iPhone warranty and have it fixed. The atendant said I should go to a Tim store with the iPhone and all my documents, there they would make a call to Itautec (the company responsible for the iPhone warranty in Brazil), and that an Itautec member would make contact by the next following 48 HOURS, and that is what I did. At November, 26th I went to the shopping to exactly the same store that I had bought my iPhone, showed the iPhone with the problem. The attendant called Itautec, she told them all my data (address, iPhone model number, contact information), then she got a protocol number from Itautec. She gave me the number, and told me Itautec would make contact in 5 DAYS. The protocol number from Itautec is 12243392. It has passed 15 days and no contact has been made!
Deeply unsatisfied, annoyed and ungry with the malfunction in my iPhone, last week I did a google research about iPhone warranty in Brazil, and I`ve got surprised by the huge ammount of people complaining about it, extremely unsatisfied with Tim's and Itautec actions and lack of will to resolve their clients problems. You can look at "www.reclameaqui.com.br" that is a famous and very important brazilian site that allows people to publicise their problems with products, just make a search on the iPhone warranty subject, please (of course, in Portuguese).
After discovering so many complaints I decided I should not wait for their contact. First I tried the TIM store, I spoke to the seller of the iPhone about my problem, she felt sorry but she said she couldn`t do nothing: it's Itautec's responsibility now. OK, so I searched Itautec's web site about it, then I discovered something very "interesting": they only offer a phone number to speak about problems of iPhone out of warranty!!!
This is true! I have never seen such a company that only offers a phone number to products that are OUT of warranty! Nevertheless I called them (phone number: 08007727753), because I was deeply in need to speak to a human being of that company about my problem. I spoke with a woman called Rosangela and she repeated to me that she could only help if my iPhone was out of warranty - I told her I was desperate and so she told me that THE ONLY WAY I COULD MAKE CONTACT WITH ITAUTEC TO SPEAK ABOUT MY PROBLEM WAS THROUGH AN E-MAIL: "[email protected]". She also told me that probably a woman called Natalia would answer me. I sent the e-mail last week, until now, no contact.
I just don't know what else should I do. I spent a lot of money on this phone, I thought I was secure with Apple, but now I think different, and I`m telling everyone this sad story. Please help me, unfortunately Apple's image is being ruined with this too. I don`t trust TIM, nor ITAUTEC, but in Apple I still do. Please help me!

Problems with PXI after motherboard replacement

Hello,
My PXI system consists
of PXI-1045, PXI-8360 and five NI
PXI intruments (5152, 4065, 6552, 2532, 5404). I was working with this
system without problems for a long time. However, the motherboard of my
PC had a specific problem with the ethernet connenction and I decided to
replace the motherboard with a new one (same model). After the
replacement (the pc finally was fully functional), I tried to power on
the PXI chassis, but I couldn't "see" any module in PXI chassism, using
the MAX. I must tell thatI didn't change the hard disk of the
pc, or anything else just the motherboard.After some experiments, I
finally fix the probrem with the following solution: First I unplugged
all the modules from PXI chassis. After that, I plugged one module and I
reboot the pc. After that I plugged the second one module and I reboot
the pc. And so on...
This was the only solution
that I found in order to indentify all the modules of the PXI chassis.
My question is why happend this
thing? Where are the PXI modules' adresses stored? Also, is the
procedure I used correct, or I had to do something else in order to make
the system work?

Hello,
Im glad that your system is up and running, ideally that behavior should not have occured. For future troubleshooting, also check Windows Device Manager to see if your devices show up if MAX does not detect them (Windows may have initially failed to detect the hardware). In a PXI system, the pxisys.ini file provides mappings from PCI logical addresses (PCI bus, device, and function numbers) to corresponding PXI slot numbers, allowing device driver software to identify the slot of a PXI module. There is a unique pxisys.ini file for every combination of PXI chassis and controller. See the link provided below for additional information regarding how to configure PXI systems in MAX.
1. Configuring Your PXI System in MAX 3.x and Above: http://zone.ni.com/devzone/cda/tut/p/id/11136
Best regards,
Ali M
Applications Engineer
National Instruments

Multirate sampling using CLK IN with PXIe-5922

Hi
I am working in an application where I need to change the sampling rate of an acquisition between 500 ks and 5 Ms without stopping the acquisition. The idea is to be acquiring continuously and be able to change the sampling frequency live depending on external events
I was thinking about doing this using a PXIe-5922 and controlling its sampling frequency using the external sample clock input (maybe I would have to change the decimation factor by software as well?) connected to a signal generator (5404?) or some other clock generator whose frequency I can change without stopping the signal (maybe some specific development on PXI-7833R). My concerns are:
Reading the 5922 spes I am not sure if I can change its sampling frequency between those values (500 kHz and 5 Mhz) using the external sample clock input without stopping the acquisition (my experience with other DAQ is that when you have to do any programming of the instrument the acquisition stops during the programming phase)
If the above can be done, I guess my second problem will be to determine in the acquired data where a change of the sampling frequency has happened (as the driver will not know if I am using an external clock)… but I am not yet much worried because of this J
I have not buy the hardware yet until I am sure I am in the right way... so any help will be much appreciated
Best regards
Guillermo

Guillermo,
Keep in mind the Reference Clock is used to generate the internal Sample Clock. Changing the frequency of the Reference Clock will result in the same Sample Clock frequency. Also, changing the Reference Clock frequency should not be done while acquiring since the device's clock circuitry needs to be configured based on the Reference Clock frequency. I don't think this solution will produce desirable results for these reasons. Unfortunately, the 5922 does not accept an external Sample clock from the Clock In terminal since the Sample Clock needs to be extremely high quality to meet the device's specifications.
Do you really need to run continuously across different sampling rates, or could you afford a small amount of reconfiguration time between frequencies? If you can, then you can also avoid the additional complication of not knowing where in your acquisition the sampling rate changed. Could your application run continuously, then reconfigure the sampling rate when a trigger is received?
Jeff B.
NI R&D Group Manager

National Instruments PXI with IEEE 802.15.4 standard (ZigBee)

Bonjour,
En fait, je travaille sur un projet qui a pour but d’implémenter un émetteur/récepteur Zigbee en bande de base reconfigurable sur la plateforme d'évaluation XUPV5-LX110T qui embarque un Virtex 5. Je suis actuellement dans la phase de test réel.
Premièrement, Je veux envoyer mes données venant d’un pc vers un FPGA et de les recevoir (pour traiter mes signaux sur Matlab). Est-ce-que cette tâche est faisable ou non ? Y a-t-il une solution pour ça en utilisant un média de communication (la liaison série par exemple)
Deuxièmement, Y a-t-il un équipement de mesure et de test de National Instruments à l’aide des PXI qui supporte le protocole sans fil Zigbee ou autrement la norme IEEE 802.15.4 (à savoir RF Vector Signal Generator et Vector Signal Analyzer) de la partie frontale analogique que ce soit en émission ou en réception?
Et merci d’avance pour tout le monde.
Hello,
In fact, I'm working on a project which aims to implement a reconfigurable Zigbee tranceiver on XUPV5-LX110T Evaluation platform which integrates a Virtex 5 FPGA. I am currently in the phase of real test.
First, I want to send my data from a PC to FPGA and receive it (to treat my signals on Matlab). Is this possible or not? If yes, Is there a solution for it using a medium of communication (e.g. serial link)
Second, is there a measuring equipment and testing National Instruments using PXI which supports the Zigbee wireless protocol or otherwise IEEE 802.15.4 standard (i.e. RF Vector Signal Generator and Vector Signal Analyzer) of the analog front-end either in transmission or reception?
And thanks a lot in advance for everyone.

Hello,
I am not sure what data you will be collecting, or how you intend on using the board. Perhaps you can explain your application a little bit more?
Is the FPGA code already developed for your application with the XUPV5-LX110T board? As long as the developed FPGA code is able to communicate with your PC via whatever protocol you choose, then you can use that as a channel to send data back and forth. Since the board is capable of many different I/O connections, you can pretty much sending/receive data over which ever connection you prefer, Ethernet, RS-232, etc.
Just to clear up any confusion, if you do not already have FPGA code for the board, this is not something you would be able to develop with LabVIEW FPGA programming. The XUPV5-LX110T board is not supported for programming its FPGA using LabVIEW FPGA. You can however, program in labVIEW to communicate data back and forth with the I/O you have chosen to connect with to your PC, such as Ethernet or RS-232, as mentioned above.
As far as measuring equipment NI offers for testing with the Zibee (IEEE 802.15.4) wireless protocol in the PXI platform, if your application requires you to both transmit to, and received from the board, and then you would need either both a Vector Signal Generator and Vector Signal Analyzer, or a Vector Signal Transceiver. See the list below for some examples of what we have to offer.
VSAs: NI PXI-5661, NI PXIe-5663E
VSGs: NI PXI-5671, NI PXIe-5672/5673E
VSTs: NI PXIe-5644R/5645R/5646R
From my knowledge of ZigBee, you would be capable of communicating with the board using any of these devices.
Matthew R.
Applications Engineer
National Instruments

Accesorios para el NI PXI-5404

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