Analog/6 channel direct or SPDIF/optical for dvd playba

Using x-fi platinum.
Just wondering if anyone knows which is best for dvd/BLU RAY?audio, I have the X-fi hooked to logitech's z5500 both analog and optical/spdif. I use the 6 channel direct/analog when I game for EAX effects and optical for music and movie playback. I never really explored the pros and cons using the analog for straight Movie play back till recentily and?I ?can't seem to find any info on Google about this. I just want to know which is best, analog or spidif for movie play back? I can get 5. surround sound either way though just need to know which method is the better. IF the speakers were PCM 5. would know which way to go but they aren'. Any thoughts would be nice.

So no one has any thoughts on this?

Similar Messages

Audigy 4 Pro - can only get 2 channel sound via SPDIF/optical connecti

I have two PC's, one with an Audigy 4 Pro and one with an Audigy 2 Platinum (A2P), I have my 5. speakers hooked up to the A2P and the A4P connected via the SPDIF to the A2P, I would expect to get 5. - both are setup to use 5. speakers, (I know that as a standard Digital coax/optical connections should handle multi speaker configs my entire A/V sound system (7. Dolby) uses optical and coax and it works fine).
If I run the channel test on the Audigy 4 I can get nothing but sound through the left and right speakers, if I run the test on the Audigy 2 (speakers direct connected) the sound is fine, if I reconnect the speakers to my Audigy 4 I get sound on all speakers so it looks like its an issue with the SPDIF and optical inputs (I tried both).
I have emailed tech support, I'm waiting for them to come back and tell me that the Audigy 4 cannot transmit more than two channels down the SPDIF/optical outs, thats my suspicion anyway, if that is the case then I'm not going to be a happy man and the Audigy will be going back to the store. Could be a driver problem of course as I cant believe they would implement Dolby and THX and only transmit two channels on the optical outs, that would be a bit dumb considering the primary use for digital connections is sound system interconnects.
Anyone with any ideas about this let me know, perhaps theres a hidden setting somewhere or a registry setting that switches the digital outs to carry all signals.

Just before everyone kicks off, heres a response I got from a tech guy at Creative themselves.
If you connect speakers to your sound card using a digital cable
(RCA/SPDIF or optical) then the software speaker test will only output
from two speakers. The reason for this is that the speaker test signal is
not in AC3 nor DTS format.
The signal on a digital connection is either
Optical SPDIF - which is either Stereo PCM signal or AC-3/DTS Bitstream
RCA SPDIF - which is either Stereo PCM signal or AC-3/DTS Bitstream
If you play AC3 (Dolby Digital) or DTS encoded signals, the amplifier
decodes this and outputs it to all 6 speakers (5 satellites & subwoofer)
discretely.
When playing back stereo signals (such as Wav/CD Audio or MP3/WMA files)
the amplifier may generate 5. output based on the incoming stereo PCM
signal, provided Dolby Pro Logic decoding is available and activated.
Therefore the speaker test should not be relied on when using RCA or
Optical digital connections.
This applies to all speaker systems equipped with RCA or Optical digital
connections.
This makes sense to me and I'm pretty happy with it, basically as the reply says above the speaker test does not encode to AC3 hence if you hook two Audigys together and run the test you only get 2 channel output, if you play a DVD which is AC3/DTS encoded on one Audigy and listen to speakers hooked up to the other when both Audigys are connected via SPDIF or optical you should in theory get full playback on all speakers. Hopefully
Cheers
Simon

SPDIF Cable For DVD Dri

I bought an digital spdif cable for my dvd optical dri've, it has a connector that's female at both ends, for a two pin connection , going ifrom the dvd player to my sound card !!? MY question is this , it seems pretty sraight foward but i don't know if my card has the connector for it , from what i can?see from the pictorial !!? my card is the ?x-fi xtreme gamer SB073X Series . just thought?I ?would try this , even though the sound I'm getting from games, and movies is fantastic in analog
!!! Do you have any advice for me ? Thanks for any help !!? Blackhawkxlh

Hello, I looked this up in the Online Manual. When you want to use the X-fi to decode the spdif stream from your software dvd player. Goto the settings page in your software dvd player and select passthru or somesuch option under your audio settings. It could be called Spdif passthru or it could be similar to mine in the ati version of the decoder software it offers to downmix or you can forward it to some option ati has. when I chose the 2nd option it simply passed the stream to the X-fi. The high speed sound of a DVD player on full tilt was elminated and the X-fi was doing all the decoding as if it was connected with a Spdif cable.
That said I would personally like to know if it is possible to use the cable at all. I hope this hel
ps.

Internal Optical for DVD-RAM read/write

I want to buy an internal DVD multidrive to install in my MacPro. I have old Type 1 DVD-RAM media from my trusty Sawtooth G4 that I want to keep using and I want to continue archiving my freelance jobs, photos and video to DVD-RAM, using more current cartridge type disks.
Though I've searched quite a bit on the Internet for something I'm having trouble determining whether drives I'm finding accept the Type 1 cartridge and whether the drive will be compatible with my MacPro.
Does anyone have personal experience with installing a DVD-RAM drive on a MacPro? Any suggestions for selecting a drive or for installation?

My old Type 1 disks are double-sided and I also want to use Type 2 and 4 double-sided cartridges if I buy a DVD-RAM drive. I like having archival data on disks inside the cartridges. These are like glorified ZIP disks. For my intended use, I think they're much superior to a non-cartridge disk.
I found some Panasonic drives that are billed as capable of playing cartridge disks, the one directly below even specifying Type 1.
http://www.usb-ware.com/panasonic-lf-m821-oem.htm
http://www.cwol.com/dvd-burners/panasonic-lf-m821-oem.htm
The above sites feature almost identical product pages, along with a few other sites I landed on. That fact made me a little wary, since I don't understand the reason to have multiple sites with the same pages but a different name in the site header. I also don't find this drive on any sites other than these with the identical product pages. I wondered if it is a non-U.S. market drive. When I wrote the company they responded affirmatively about the drive working on my Mac and playing the Type 1 disks, but they didn't respond to an inquiry about it being a U.S. vs. non-U.S. drive and whether that mattered for my hardware. The Panasonic USA web site also didn't feature this drive, so that concerned me.
The Panasonic drives below show cartridge capability but don't specifically say that they're Type 1-compatible:
http://logicalplus.stores.yahoo.net/padvddlsumud1.html
http://logicalplus.stores.yahoo.net/answ5xdvdram.html
http://logicalplus.stores.yahoo.net/pasw8xdufodv.html
It seems that Panasonic is the company making drives that may be suitable for my particular needs. I'm just a little wary and am hoping someone else has had some experience with these drives on G4s/G5s and/or Intel MacPro computer.

What is the SPDIF Optical Out meant for?

I have connected the optical s/pdif out from my Neo2 Platinum to my Panasonic 5.1 Receiver, but I can´t hear anything. The "red light" reaches the receiver, but it can´t decode the signal somehow. I had this with my Audigy 2 card: When I enabled "96khz" my receiver couldn´t read the signal, but when I changed this option to "48khz" it works perfectly. Unfortunately I can´t see this option within the AC97 drivers. So what can I do?
Yesterday I had PowerDVD and Winamp running side by side. I could actually hear the PowerDVD movie, but not the MP3 from Winamp. So it has something to do with the signal from the mainboard. How can I change this?

Quote from: bassmadrigal on 14-July-05, 15:42:01
The spdif out is only capable of relaying dolby encoded sound to the receiver. It is unable to transfer 2 channel..
Um. No.
Per the original question - the optical connector carries the exact same signal as the coaxial digital.
The funny truth is that SPDIF wasn't intended for listening. It was intended for karaoke. They thought they'd make CDs with the lyrics encoded in the less significant bits of the audio stream, and have the karaoke machine strip them out of the bitstream.
But audiophiles started using the SPDIF digital out on their CD players to connect them to audiophile-grade DACs.
Since it wasn't really designed for audio, there's some occasional (mostly insignificant) bit distortion, and the distortion can be made worse by a ground loop introduced by the shield on the coaxial connection.
The optical connection overcomes those issues pretty well. There's no electrical connection and thus no possibility of multiple paths to ground, and the data latches built into the optical transmitter and receiver guarantee that bits are better defined.
Don't pay a lot for optical spdif ("toslink") cables. The only feature worth anything is strain relief on the connector, to keep you from accidentally yanking the fiber out of the connector. The common plastic fiber works just as well as glass on hookups less than about 150 feet in length.
The relivant specifications are IEC60958 and IEC61937. Google for 'em, it's interesting reading.
ANYWAY, as per the specific question.
Pursuant to IEC60958 and AC97 specifications, and restricted by the choice of the ALC850 codec chip, the digital audio connectors on the Neo2 are capable of 48khz 16 bit transmissions.
This includes 48khz 16 bit PCM stereo audio and Dolby Digital compressed audio up to and including 48khz DTS.
Whether or not the windows drivers are capable of the dolby passthrough, i dunno, I've never booted windows on mine. Linux (with ALSA drivers) surely can.
Some audio codec chips are capable of more rates. IEC60958 and it's extensions allow for 32khz, 44.1khz and 96khz in addition to the AC97-mandated 48khz. 18 and 24 bit resolutions are also allowed.
If you intend to build a system for use as a home-theater PC, i highly recommend finding a motherboard with a codec that will at least do 44.1khz. Resampling the audio to 48khz can do horrible things to it. 32khz is only needed for some videos you might download from the internet, some VCDs, etc. You'd already know if you needed 96khz.
Your games are 5.1 but they are not encoding Dolby surround on the fly, so the digital connector is only going to get you 2 channels unless you are watching a DVD or something.
The exception is nForce2 SoundStorm boards, which have an on-the-fly dolby digital encoder.
Dolby is starting to license out their real-time encoder, so it may be possible in the future to buy a piece of software that will push your 6 channel game audio through your digital output.
This is why most surround receivers have a multi-channel input. You're just going to have to get a bunch of cables and run analog.
I also highly recommend that you invest in ground loop isolators.
Since your computer has a three-pronged power plug, it has it's own route to earth ground. Most stereo equipment does not.
When you plug the analog audio output from your computer into your home stereo receiver, in most cases you will hear a 60hz hum on the speakers. This is a harmless (but annoying) tone generated by the multiple paths to ground in your electrical connections.
I've had good experiences with RCA type ground loop isolators intended for car audio use. This has RCA connectors just like your stereo. You'll plug the isolator into the stereo and the computer into the isolator using normal audio cables.
I've had good experiences with Scosche ESO34 ground loop isolators. I've paid about $10/ea for them on ebay. You may pay as much as $15 or $20 for them at car audio specialty stores. Sometimes you can get them cheaper, especially if you're buying more than one of them.
Other RCA type ground isolators probably work just as well. I actually have a box of half a dozen of some other brand that i haven't tried yet, that i paid about $2/ea for.
Some come with brown wires dangling out of them, for earth ground. Personally i wouldn't connect them to anything.
Some of the nicer sound cards - most of the Audigy line for example - has on-card ground isolation, and won't need an outboard isolator. Motherboard audio almost certainly does not have ground isolation.

I am using an NI PCI 6024 E board device for an analog output application. Can I generate two independent waveforms, one on each analog output channel?

I am using an NI PCI 6024 E board device for an analog output application. Can I generate two independent waveforms, one on each analog output channel? In attach I send a example of my vi to control one chanel, but i need to control both but with diferent waveforms.
Is the vi correctly programed to this propose?

Yes you should be able to do that. look at the signal generation examples shipped with LabView
You can create a 2 D array, with each row representing a wave form per channel. The number of points of the wave form (per row of the 2 D array) represent the number of points in the output buffer
The wave forms can have different amplitudes/shapes, and therefore they are independent in this sense.
However, you need to set the update rate,which is the same for both channels. The update rate together with number of points per buffer determines the frequency of the wave forms. This means the two wave forms will have the same frequency.
To have different frequencies, you need to have say, on wave form with one cycle per buffer, and the other waveform have 2 cycles
per buffer. in a case like that the frequency of the second channels is twice that of the first channel, and so on
The two wave forms are then not truly independent, they may have different amplitudtes/shapes, but related in frequency.

Analog close channel for agilent 34970A

Hello,
I am a new user of labview.I need some help programming my Agilent 34970A.
I can initiate communication with my instrument and take data,but I want to close a particular channel and read channel several times and average.
I was looking for a VI something like "Analog close channel" using which I can close a particular channel,read it several times,average the data and then go to the next channel.
Could you please help me in this issue,eagerly waiting for a reply.
Thanks,
Harinadh.

First you need to convert your string to a binary datatype and calculate as needed.
Ton
Message Edited by TCPlomp on 11-12-2009 07:40 AM
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Connector block 16 analog input channel for 6036E

sugesst me connector block of 16 analog input channels compatible with 6036E daq card

Thanks for contacting National Instruments.
You really have two choices in connector blocks: the SCB-68 and the CB-68LP. The CB-68LP is inexpensive, but unshielded. If you are concerned about introducing noise into your signal, or if you are talking small measurements (mV range), then the shielded option, the SCB-68, will be better for you.
Regards,
Mike G.
National Instruments Support

PC able to detect all except for the analog output channel of my SCB-68 device.

I would like to use the analog output channel of my SCB-68 device. I tried to locate the analog o/p using the wizard but still unable to detect. Why is that so?
Any possible steps/procedure that i have missed out?
Thanks

Rezn,
Aha, therein lies the problem. This was what I suspected, and thus my question as to which data acquisition card you are using. The DAQCard-AI-16XE-50 has analog inputs, digital I/O, but no analog outputs at all. So your card is working as it should, but it has no analog outputs.
If you have the 2002 National Instruments catalog, you can see this in a table on page 231 (your DAQ card is the one on the bottom), or check this pdf file:
http://www.ni.com/pdf/products/us/2mhw254-255e.pdf
Your card is also called the NI6012E. Check out the small table on the first page.
Mark

K9N Platinum- Only 2 channel sound from SPDIF

Hi Guys,
I am struggling to get a 5.1 output on SPDIF in the Realtek Manager. If i run the 3d sound demo, all i can hear is sound from the front 2 channels, no centre or surrond speakers. This is extremely frustrating. Can someone help ??

Quote from: ivon on 09-August-06, 17:23:28
I am tempted to go and get the Creative card...However one of the reasons why i shelled out money for this Mobo was because of the SPDIF out put ...and i cant get even the Realtek sound manager to out put to the five speakers...
I could have gone in for a cheaper ASUS board and a creative card...however i cant afford another card at this stage mate. Need to figure out a way to get this working.
Where can i get the latest drivers for the 883 chipset.
Jal
STOP!!!!!
Don't just go and buy a Creative card, read these first:
http://forums.creative.com/creativelabs/board/message?board.id=soundblaster&message.id=12170
http://forums.creative.com/creativelabs/board/message?board.id=soundblaster&message.id=70769&query.id=157202#M70769
If you want surround sound using spdif (optical or coaxial) the cards from Auzentech is for you. I'm using the HDA Xplosion but I think they are going to release a new card called X-purity in September. Their card can ENCODE Dolby Digital and DTS so you can enjoy surround sound using spdif. To be honest, my card, the Xplosion is not that great for gaming as it uses software+hardware Dolby digital/DTS encoding so you will lose some CPU usage for the card. It'll also cause your system to lock-up sometimes if the driver is corrupted since the encoding relies heavily on the driver. Eventhough it has those problems, I would not trade this card for a Creative card, not until Creative makes a card that will encode either Dolby Digital or DTS. The advantage is you can connect your PC with a home theater system or if you are using a Logitech's digital speaker (Z5450,Z5500) you can use the 3 analog inputs for 3 other device rather than only from PC. Btw the analog output of my Xplosion is also good but not as good as X-Fi, but you can change the opamps to make it better, but it wouldn't change the digital output quality at all.
http://www.auzentech.com/products.html

HP Mediasmart DVD on a6750t will not output 5.1 channel data via SPDIF or HDMI

So I got a new customized HP desktop on Friday. Started to play with it on Saturday. I called Sunday morning to request an RMA number and return shipping label. Here is my saga:
Started HP issue calls at 3:47am FEB 15th 2009
Gion (per rep spelling) stated return will be handled through warrantee/support department). He stated HP does not allow them to release a badge number. Ticket# xxxxxx3374.
(Transferred to warrantee/support department)
(The line was full of static- asked for the 800 to call back. Person said he didn’t have the number I called in on. Had to log on to www.hp.com. Found the number to call was 1 (800) 474-6836. I called this number.)
Satya (per rep spelling) answered the line. I informed rep that I am not receiving any 5.1 output from the Blu-ray disk software that was provided by HP (HP Mediasmart DVD). Advised him that all MS products, DVD's, and HD devices were sending 5.1 channel output to my Yamaha receiver. [DVD’s are the important part. As the same drive is used for BOTH DVD and Blu-Ray, it is my opinion that the hardware is working fine.] I reiterated many times that the only thing not sending 5.1 channel data was the HP MediaSmart DVD software player for Blu-Ray disks.
Satya ran various tests and wanted to “call back tomorrow with a solution“. He seemed to think that perhaps there was a problem with hardware and possibly I had not received something in my order.
I clearly started I wanted a RMA number and I wanted to return the product. Satya refused saying he had to "research" the problem before he could issue the RMA number and return the product. He said he would call me between 2pm and 5pm tomorrow (MST) (I informed him it was currently 4:49 am at my location.)
The problem is not with the hardware. All Microsoft software products that offer 5.1 channel support are sending via SPDIF (optic cable) 5.1 channel data. Again, all DVDs and other 5.1 devices (HD PVR) are sending (via SPDIF) 5.1 channel data to my Yamaha receiver. The only thing not outputting in 5.1 is the Blu-ray disk software player (HP Mediasmart DVD). DVD’s are ran using the Blu-ray drive (only one on the system) and are sending 5.1 channel data with no issues.
Ended HP issue calls 4:52am FEB 15th 2009
So, any other suggestions? I have tried various things like HDMI-Passthrough, HDMI-PCM, SPDIF, and 6 speaker output on the HP MediaSmart DVD Blu-ray software player application to no avail.
This question was solved.
View Solution.

FEB 16th 2009 1:15 am
Decided to try some trial Blu-ray programs to see if this issue can indeed be resolved with a different software package.
Corel’s WinDVD9 would not play a Blu-ray disk. I received no errors. The program loaded the disk, after about 10 seconds stopped and went back to the main screen.
Cyberlink PowerDVD had a trial limitation that does not allow Blu-ray disk playback.
ArcSoft TotalMedia Theater (TMT) works flawlessly. Outputs in 5.1 surround with no issues, therefore my assumption that it’s a software issue is correct.
Due to the problem being software related, I will call HP to see if there is a way they can send me a different Blu-ray software player. I like the system and do not really want to ship this back to HP. There is a sale tomarrow and I might even buy another system for my mother if HP will work this out.
HP call start at 2:06 am FEB 16th 2009
Called 1 (800) 474-6836. Satya answered the line. He asked if his supervisor had called me. I stated no, I had only received his call at 7:47pm and I had placed a call to Bridgette at 8:37 pm for a RMA number and shipping label.
I advised him I was willing to try and work with HP now that I found it was indeed a software issue. I asked him if there was a possibility of getting a different software player that would work with my setup. I advised that on my own I found that ArcSoft TotalMedia Theater (TMT) trial version works (based on me installing a trial version). Its my understanding that HP provides many software titles from ArcSoft including a MediaConverter I also purchased for the desktop.
He placed me on hold to find out.
He said HP doesn’t carry or support ArcSoft TotalMedia Theater. He said he would have a supervisor call me back within 24 hours with a solution. I advised him to stop the RMA. He stated an RMA had not been issued yet. I gave him the RMA number I had and advised I had received a shipping label via email from Bridgette per my earlier call. He placed me back on hold to check.
He said he cancelled the RMA and would have a supervisor call me back between 2pm - 5pm (within 24 hours).
Call ended at 2:34 pm FEB 16th 2009
I am guessing that HP support is not enpowered to solve a problem like mine. I would have been willing to work out something with HP but its is seeming more and more that HP really doesnt want my business. The issue here is software limitation PLAIN AND SIMPLE. I paid (in part) for a Blu-ray player that would play Blu-ray disks and output sound in 5.1. The TRIAL version of ArcSoft TotalMedia Theater works fine. Therefore the hardware is fine.
Without a different software player shipped to me OR me buying the ArcSoft TotalMedia Theater software for 80 dollars, I am forced to listen to Blu-ray disks in 2 channels. I would like to work with HP but if HP will not work with me then I have no choice than to return the product.

2 analog output channels with different frequencies

Hi,
hope that somebody can help me:
I created two physical tasks, analog output channels.
I should give signals (triangle signals) to a scanner. The problem ist that I need these triangle signals with two different frequencies.
I can create the signal with each of the task, but not together. Can I solve this problem somehow?
Ah, and of course the 2 tasks should start together...
Thanks for your help!!
Telly

You didn't mention the type of device you're using, so I'll assume it's a standard MIO. A typical MIO only has one AO timing engine, so you'll have to create one task for both channels and use a single update rate for the task. You will have to make the output frequencies different by passing different data for both channels.
For example, let's say your update rate is 1KHz. The data for channel 0 is 1000 data points of a single cycle of a triangle wave. The data for channel 1 is 1000 data point of two cycles of a triangle wave. When you run the task, you will get a 1Hz triangle wave on channel 0 and a 2Hz triangle wave on channel 1.
Good luck,
Joe

Stop trigger, how to specify the analogy trigger channel?

Dear All,
In fact, I am using DAQ2204 cards from ADLINK, which is more or less equivalent to NI E-series muttifuntion board. However, I have some problems with regard to my data acquisition program. Basically, it is about a middle/stop trigger application, which means data acquisition will be starting once the specified analogy channel (for example, channel 0) exceeds a prescribed value.And, data both before and after trigger will be acquired. However, I do not quite understand how to physically make the I/O connection and specify the analog trigger channel and level.
According to the board User's Guide, 'SRC1 can be used for all trigger modes while SRC2 can only be used for post and delay trigger modes'. I have come across similar description with NI examples before. It would therefore be very appreciated if anybody can help. Thanks in advance.

Hi dragondriver,
I'm providing below links to 2 documents that discuss wiring considerations that are applicable to your device. Hopefully this information is helpful!
E Series User Manual
http://www.ni.com/pdf/manuals/370503k.pdf
Field Wiring and Noise Considerations for Analog Signals
http://www.ni.com/white-paper/3344/en#toc5
Josh B
Applications Engineer
National Instruments

Is there a difference between SPDIF Optical and Digital Optical

i want to connect my tv's audio output to my home theater
i have a vizio tv, on the back of it, it says SPDIF OPTICAL OUT
and on the back of my panasonic home theater system it says, DIGITAL AUDIO IN, i tried connecting an optical cable and the sounds from my won't still go through the home theater system speakers.
i'm just wondering, is there a difference between SPDIF OPTICAL and DIGITAL OPTICAL?
ports look like the same.
Solved!
Go to Solution.

smileemile wrote:
i want to connect my tv's audio output to my home theater
i have a vizio tv, on the back of it, it says SPDIF OPTICAL OUT
and on the back of my panasonic home theater system it says, DIGITAL AUDIO IN, i tried connecting an optical cable and the sounds from my won't still go through the home theater system speakers.
i'm just wondering, is there a difference between SPDIF OPTICAL and DIGITAL OPTICAL?
ports look like the same.
Nope, two names for the same thing.
You may have to change some settings of either the TV or the Panasonic system to output to the optical port (TV) and input from the optical port (surround receiver).
*disclaimer* I am not now, nor have I ever been, an employee of Best Buy, Geek Squad, nor of any of their affiliate, parent, or subsidiary companies.

How to trigger from analog input channel

I am using a BNC-2110 into a 6062E card. And I am sure this question has been posted several times but I was unable to find a clear answer. I am trying to use the devices ai0 channel as my trigger source. I tried using a voltage source in the trigger reference, and that almost works but it only works for several loops before coming up with an error. If someone knows what I may be possiblely doing wrong or where to find this information, any assistance would be great.
- there is always an easy way, but it is always the hardest to find

Hey Henry,
The BNC-2110 is just the connector block. What card do you have the is interfacing this block with your computer? (should be a PCI or PCI-express card). Are the GPS receivers outputting digital signals that conform to TTL compatible logic levels (are the signals 5V or 0V with no more than 1.6mA of current)? If they are outputting a digital signal, then you can send these signals into any of the PFI lines to act as a trigger (or to the trigger lines).
For example, if you would like to perform an analog acquisition each time the trigger hits and have an X series card, you can open up example finder (help»find examples...) and then open Hardware Input and Output»DAQmx»Analog Measurements»Voltage»Cont Acq&Graph Voltage-Int Clk-Retriggerable.vi. Then make sure your Trigger Source parameter is set to the same PFI line that you are sending your GPS signal to (on the BNC-2110, the trigger connections are really just PFI0 and PFI12, but these are common lines to use for triggers, but any PFI line will work). If you have an M series card, and cannot do retriggerable analog input, you can reference this example for how to use counters to workaround this limitation of our M series cards: https://decibel.ni.com/content/docs/DOC-6801
If your GPS signal isn't digital, and is some arbitrary analog square wave, you can use an example like this: https://decibel.ni.com/content/docs/DOC-4657 to use the analog value to trigger you're reading (you just need to set the appropriate window for your analog signal in the VI). I hope this helps!
-Nathan H
Software Developer
National Instruments

Analog/6 channel direct or SPDIF/optical for dvd playba

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