Vb6,card: pci6111,daq box:bnc2110,receive digital signal+react on it,how?

want to send a digital signal from a function-generator into the daq-box (e.g. into ACH 2) and to react in my program on it, when the dig.signal makes the first step from 0 to 5 V e.g.must i change anything else on hw than connecting the function-generator to ACH 2? How can I react on it with my created CWDI1-Objekt. It doesn't work! Thnx a lot! p.s. other ideas are also wellcomed!

Hi,
I'm not understand the relationship between the components of your system (or even what they are!). You'll have to clear your system description a little bit.
1.- You have a DAQ board, what model?. This is important since it will determine what VIs you can use. Are you using the board for Analog input, anolog output ...?
2.- "The DAQ card relays the information to a digital oscilloscope", What do you mean by this?. Is the digital scope a hardware device or some sort of software component?.
3.- ActiveX is used to communicate different software components, not to communicate with external instruments. Again, what is the o-scope?.
4.- Initially you say that Win600 is a machine and then a program. Which one is it?.
I think once this quest
ions are cleared up we can start thinking of solutions.
DiegoF
National Instruments.

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Confused about analog tv to digital conv box to comcast digital set top box

I have an analog tv which is already connected to a governmt subsidized digital signal converter box required when all tv signals went digital. I have a digital wifi modem via xfinity, and now also have an xfinity diy digital set top box. I do not have a cable splitter/extension, so I van only hook up the tv. I unplugged the modem and commented the XF digital conv box to my analog tv. Really confused as to how to hook up wifi and tv to XF digital box, and do I need the previous free digital signal conv box. All my services are activated, but I still can't watch tv.

The Comcast box replaces the old over the air box.
If you didn't get a coax splitter, you will need one, which you can pickup for free at your local Comcast office. The coax from the TV outlet on the wall connects to the splitter's input. The outputs of the splitter, one to the cable modem, the other to the input on the cable box.
The coax output of the cable box connects to your TV like how your old box was connected.
You will find more information at this Comcast help page, look in the TV section and pick the type of box you received from Comcast.
http://customer.xfinity.com/help-and-support/phone/how-to-install-your-self-install-kit-devices/

Can i convert a wav file to a digital signal without using DAQ?

i tried the coversion of a sine wave to digital signal, ofcourse it doesnt work on converting wav file to a digital signal. i am also new in labview. i tried to explore it but there are many functions that i can't use.
so my these are my questions.
1) is a .wav file is an analog signal?
2) can i convert it without using any DAQ device?
tnx guys! i'll post the programs that uses quantization of a simple sine wave. i tried it to .wav file but it didnt work.
Attachments:
act04-02.vi ‏41 KB

.WAV is a digital "signal". It uses Pulse Code Modulation to encode analog signal. You don't need a DAQ device to "convert" it to analog. Any computer with a sound card, and media player can "convert" a .wav file to the analog audio signal it represents
Wan L
Applications Engineer
National Instruments
http://www.ni.com/support

Way to "downgrade" from digital signal on graphics cards?

Hello all,
I recently purchased an 8-core mac pro with the intention of using it for a lot of video installations for theatrical productions. I bought it with 4 of the Nvidia graphics cards, which are dvi and mini-displayport. These are both sending a digital signal, and it doesn't make it possible for me to use my DVI-composite adapter so I can plug into older TVs. I also have TONS of BNC cable that I can use to run cable paths, and this BNC has to have composite. This severely limits me, since my work involves grabbing whatever output monitor I can find. I've seen some posts on altering the signal with a EZ pc-tv converter box, but this is one more adapter/converter/whatever that can break during a performance. I'd like to just send it out from the source.
So my question is, is it possible to find a graphics card that still sends this analog signal, thereby allowing me to use my composite adapter? I just purchased the Mac Pro about a month ago, (just before they updated) and I wasn't sure if I could find anything like this. I've used the ez pc-tv box, but these don't appear to be too reliable, so if there isn't a way to install a graphics card, then is it possible to find a beefier conversion from the digital signal to analog so I can run long lengths of BNC cable?

The standard DVI connector also produces the five signals required for VGA signal on the same connector.
The DVI connector should have a solid bar toward one end of the connector. This is the ground for the four VGA pins (Red, Green, Blue, Horizontal Sync) that surround it. The fifth signal, Vertical Sync, is shared with the digital signal. A simple VGA-extractor has been available through the Apple store and other outlets.
A DVI to composite Video and S-Video adapter, which may have a few active components inside, has also been available. The one on the Apple Store lists only the X1900 for the Mac Pro, but it is not clear to me whether they have simply been lazy about updating the description.
The mini Display port adapters they list are
1) DVI-Digital-only (you can tell because the bar at the end lacks the four pins surrounding it) OR
2) VGA adapter (which you could convert to Composite with a component available in Europe they call a SKART chip).
Conversion of the digital signal is out of the question. You would need a screen buffer and as much logic as is already on the display card. Adapting the VGA signals is the way to go.

Problem Receiving Digital and Analog Channels- 22LV610U

I have a LCD/DVD combo TV model 22LV610U and had satellite tv for over a year and the tv worked great! After shutting off the satellite, I wanted to only receive the local channels via antenna. I bought a new RadioShack Indoor TV antenna ( to receive basic UHF, VHF and FM radio signals to HDTV and FM HD Radio signals)...
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If you are using a STB, then you should connect it with an HDMI cable or component cable as you did.
However, you do not need to autoprogram your TV if you are using an HDMI or component or composite or any other indirect connection. That is because the STB is acting as the tuner; it will automatically receive channel information as part of its on-screen graphics. All the HDMI connection is doing is delivering that video feed to your TV.
Therefore, what you need to do is press the "input" button on your TV remote and select HDMI, or component, whatever you are using. Then you control the channels using your STB remote, not your TV remote, which changes the channels on your STB, not your TV. Again, your TV is only receiving the video from your STB, it's not directly changing the channel itself. It's like having a VCR and turning your TV to channel 3 in the old days; you just need to pick up the video.
The reason why, when you tried hooking the TV up directly to the wall with coax is because most FiOS programming is encrypted digital. That is why the STB is needed to "unscramble" the channels and output them to your TV along with all of its on-screen graphics and program guide. Therefore, if you connect coax directly to the TV, the only channels you will receive are local channels (i.e. CBS, NBC, PBS), the ones that Verizon cannot by law encrypt. The reason why some of those channels are "16-2" or "17-214" is because digital broadcasting, as opposed to analog (think the digital transition last summer) uses "sub-channels," which are the -XXX. Verizon can assign whatever number they want to their encrypted programming (i.e. ESPN HD can be 214-1445) because the STB will read that channel and display it within it's own system as Ch. 570.

My daq 6008 wil not drop the 5V after the VI is stopped, i have a digital signal going from the error out on the daq in the while loop to the error in on the daq outside the while loop and a boolean going to the data of the daq outside

my daq 6008 wil not drop the 5V on a digital output after the VI is stopped, i have a digital signal going from the error out on the daq in the while loop to the error in on the daq outside the while loop and a boolean going to the data of the daq outside, but i can t seemto get it to work

i attached the block diagram so you can have a look
Attachments:
PID Temp control.docx ‏120 KB

DAQ vi to perform digital write and read measurements using 32 bits binary data saved in a file

Hi
DAQ vi to perform digital write and read measurements using 32 bits binary data saved in a file
Two main
sections:
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Perform
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And
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My
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This
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Currently I’m
practicing with LabVIEW 8.6/NI DAQmx 8.8 Demo versions and NI USB 6509
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Attachments:
DIO_write_read DAQ from file.vi ‏17 KB

What does your file look like? The DAQmx write is expecting a single U32 value, not an array of I64.
Message Edited by vt92 on 09-16-2009 02:42 PM
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I'm using a National Instruments DAQ board and I need to measure the
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I know the measure frequency.vi (In diagram - data acquisition -
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Thanks in advance,
[email protected]

Hi,
Attached is a vi which models your signal, and provides a way to measure the average frequency over a window of time. It converts the signal to a sequence of periods. I usually start with this approach because you can save the data in a much more compact form if your sampling rate is high. Obviously over a specified period of time, if there are no zero crossings the frequency is zero, so I was a little incoherent before. The real issue is the latency caused by averaging. Your frequency measurement is most accurate half your window size before the current time, so smaller windows give you more up to date measurements, but also more noisy. If you need the most up to date measurement, then you have to use the time since the last crossing which is the case where the frequency never goes to zero. That's probably not a realistic situation. If you needed less latency, you could use a prediction algorithm.
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Attachments:
DigRandFreq.png ‏62 KB
DigitalRandomFreq.vi ‏34 KB

I have received an itunes gift card for $$$ from someone I don't know and am afraid to download view the card. has anyone else received such?

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I bought an 15 € prepaid gift card and was supposed to receive it by regular mail but never got it. How can I get my activation code ? Called the apple store twice and was told to put my question here...

Hello, Mimi, and welcome to the Discussions.
Sorry, they should not have referred you here since we're all just fellow users here and cannot help directly with any issue with purchasing. The gift card purchase link in the iTunes Store sends you to the online Apple Store, so it's the Apple Store that needs to solve this problem. I can't imagine why they've sent you here, unless they just misunderstood what it was you were asking. All I can suggest is that you call back and ask to speak to a supervisor.
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Finally, if neither of those options solve the problem, call the Apple tech support line - look here for the phone numbers for your country:
http://www.apple.com/support/contact/phone_contacts.html
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How do I convert analogue 5.1 surround sound into a digital signal? (Pioneer SE-DIR800C headphon

I understand that my SB Audigy 2 card will only output 5. sound from games through its 3 analogue connectors. How do I convert this analogue signal into a digital one? What hardware do I need to purchase?
I have read the thread on "Digital Connections, SPDIF and Dolby Digital Info", and also I've thoroughly read the "Creative Speaker Connectivity Guide".
The reason I ask is that I have just bought a pair of Pioneer SE-DIR800C Surround Sound headphones. This are supposedly fantastic for recreating surround sound on headphones because there is a clever little decoder box. They accept a DTS / Dolby Digital signal via the digital co-axial and optical inputs, and there is a single analogue input which only accepts stereo sound.
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Thanks stefan
OK, basically I have found 3 options for getting digital 5. out of a PC:
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b) Buy a new sound card which has Dolby Digital Li've output. For example, ) BlueGears HDA X Mystique 7., or 2) Turtle Beach Montego DDL, or 3) Terratec Aureon 7. PCI (NOT the Space, FireWire or Uni'verse cards). I couldn't find the first two available in the UK so I have just ordered the Terratec card from Komplett.
c) Buy a new motherboard that has built-in Dolby Digital Li've output, for example the ABIT Fatalty AA8XE. Unfortunately my PC is only just over year old and I'm not quite ready to replace it.
I hope this info is useful for people. Maybe Creative will start making a card with DDL output too.Message Edited by NinjaHeretic on 2-22-2005 08:46 AM

Vb6,card: pci6111,daq box:bnc2110,receive digital signal+react on it,how?

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