No digital output

All of a sudden the Digital Output on my iMac has stopped working. There is no red light coming out of the toslink cable. In System Preferences/Sound there is no Digital Out in sound output devices anymore. I have checked that the cable is ok.
Previously the system switched over from internal speaksers to digital output automatically when inserting the toslink cable but now nothing is happening except that the sound is vanishing.
Is this a hardware error? The iMac is just 3 months old so I sincerely hope not.
Thanks for all tips&tricks I can get.
Regards

Hi,
Generally speaking, An Audio Device do need more driver besides USB driver to make itself work properly. In terms of your situation, USB driver is not enough to make your Audio Device works properly. I think S.Sengupta
is right. Actually it would be better to contact Digitrack support to confirm its product compatibility with Windows 7.
Roger Lu
TechNet Community Support

Similar Messages

Solution to my Audigy 4 Digital Output probs... please make a stic

I was recently playing Q3TA with my son when my overheat protection kicked in. I exited to windows to see the temp and throttle back my CPU a tad, and when I returned I had no sound from my digital output. Analog was working fine, however.
Setup:
Giga-byte GA-MA78GM-S2H w/780g chipset
Athlon 64 X2 5000+ BE
Integrated Realtek HD audio (disabled)
Integrated ATI HD 3200
2xGB 800MHZ DDR2
Creative Audigy 4
Boston acoustics Digital BA735 2. speakers
I went over every setting in all of my consoles, HQ's and drivers. I played with driver versions, DirectX versions, diagnostic programs and procedures in the knowledge base. In defeat, I even wiped out my XP install and started fresh with the Aud-4 removed, using analog on the integrated card thru headphones. Then I disabled the integrated card and reinstalled the Audigy 4 only to find that there was still no sound from the digital speakers.
Solution?
I[color="#ff0000"] unplugged the power to my speakers, and reconnected everything. As soon as the power was back up, the sound started playing (I had a .MP3 on for testing).
This stumped me for two reasons that occur to me know:
. These speakers (and possibly many others) don't fully power down when you turn the volume knob off and the light on the satellites goes out. The decoder and subwoofer unit keep their light on.
2. Apparently, some situations introduce a faulty signal to the digital output that scrambles the speaker units and they refuse to operate any longer.
Now I know, unplug the power to my speakers. My system works on all three sampling frequencies in "audio console" 44., 48, and 96KHz. None of the troubleshooting procedures touched my problem, because they didn't even mention the speaker setup, let alone doing a hard reset.
Please please please!
Make this a sticky for future me!!!

The Digital output jack on the card isn't of optical signal type.....you will need to get those I/O module mention bt johnston2 for optical connection.

USB-6009 Digital Output Current

You need to have all those grounds connected together - USB-6009 Digital Ground, ULN2003 GND, and the power supply ground. In this case it will not matter how they are connected. If they are not connected, then one of the devices could be damaged.
Lynn

Hi, I'm trying to increase the voltage of the digital outputs of USB-6009 device. I read a couple topics about using a relay but I could not manage it.
I was thinking to use 5V supply on the card since it has 200mA current on it, but when I use it with open-collector output, it can not switch the relay. When I measure the current between
5V and ground: 200mA,
5V and output, I read a value around 30-40 mA.
Why can't I use that 200mA with an output? This is the relay I'm using.
If this is not possible, can I use an external 5V supply (with more current) and a digital output to switch the relay without damage the 6009?

USB-6009 pulse train generation with digital output....

Hello!
I've bought a new USB NI-Card (USB-6009) and now I'm trying to adopt an old vi that uses traditional DAQ drivers. I wrote that vi for a PCI NI-Card (PCI-6024E), which has two counters to generate two pulse trains simultaneously. Now I've only one counter and that's why I'm searching for a good way to create pulse trains using a digital output! The pulse trains are both ranging between 100 Hz and 100 kHz.
I'm sure somebody has an idea how I can solve the probem in the best way
Kind regards,
Peter

You can't do it with this low cost board. Both digital and analog outputs are software timed only. The analog out is rated at only 150 samples/sec and the digital is about the same. You can't even use one of the counters because it is not a hardware timed counter output. It is an event counter only as an input.

HT5783 My MacBook Pro (Mid-2009) digital output has stopped working. It turns on the red light at the other side of the plug, but fails to connect with my receiver. Output from Airport works fine.

It was working fine until now, and now suddenly, the sound is gone. I've tried PRAM and SMC reset. Nothing works.
Using the same cable with my airport express, through airplay, the sound comes out fine.
It wasn't working when on Mavericks, nor now, on Yosemite.

Hey marcalc,
Thanks for the question. I understand that you are experiencing issues with the digital output of your MacBook Pro. The following resource may provide a solution:
OS X Mavericks: If you can’t hear sound from your speakers
http://support.apple.com/kb/PH13841
If you’re trying to listen through a digital receiver
If you’re using your computer’s digital output port (not available on all computers), choose Apple menu > System Preferences, click Sound, then click Output. Make sure Digital Output is selected.
Make sure your computer is connected to a digital-ready receiver using an optical digital cable, and that your receiver is set up for digital input (see the information that came with your receiver).
Try adjusting the volume on your receiver. You can’t use the computer’s volume controls to adjust the volume while using digital output.
Thanks,
Matt M.

How to give delay in switch on digital output lines

Hello All,
I am working on PCI-6514 Digital IO card, I am writing a sequence to my application using DAQmax for Digital input and output lines
I want to switch on one output line0 and after a delay 5sec switch on line1 output and after a delay of 3sec switch on line2 output and sense input line 0 and line 1 .
How can we know the status of output ie output is on or off.
Since i am using the IO card for first time suggest me in this.

Hi
I am going to assume that you are using LabVIEW 7.1 for this application. If you are trying to acquire data from an external device after outputting data to that device, the DAQmx tristate property node will give you this functionality.
You will then need a DAQmx write.vi to output your digital data followed by a DAQmx channel property node. Select Digital Output>>Tristate on the property node and wire a true constant into it. After the property node, you can use a DAQmx read.vi to read the data coming into the digital lines. By using the tristate property node, you can avoid stopping the digital output task and starting an entirely new task. I am attaching an example program that will demonstrate this.
Regards,
Hal L.
Attachments:
digital input and output.vi ‏39 KB

Using mathscript to generate multiple digital outputs for switch control

Hello
I am new to this NI LV and a have kind of a basic question. I would like to use Mathscript to generate an array of bolean numbers which will be used to control the Digital I/O lines. I am using NI 6251 USB device and the Mathscript code runs well. But I have a problem using this array to control the Digital output. So I created a simple test programme where I set the DAQ assitant to generate 4 digital outputs(P0.0 ~ P0.3) and it gives error that ".. number of channels in the data does not match the number of channels in the task..." (see attachment) . How can I solve this problem thank you.
Attachments:
K-9.jpg ‏36 KB

looks like you did not initialize all 4 of the elements in the bool array....

No Digital Output available in Playback devices (USB audio device)

If one has USB audio device with coax/toslink out, with proper drivers (like ie TurtleBeach Micro Advantage) available & installed then Digital Output is available to select in Playback devices. (and one can play AC3/DTS to external amplifier with ie
VLC or MPC-HT with AC3Filter DS filter)
But some USB devices (ie Phonic Digitrack -
http://www.phonic.com/en/digitrack.html ) do NOT come with drivers (as Windows has default build in). Digitrack uses TI
Burr-Brown USB Audio Codec 2906 -
http://www.ti.com/product/pcm2906
Sadly these Windows drivers do NOT have a clue about what the device actually has as inputs/outputs
So even it had coax digital out & the sound IS send via it, the actual data send is in right way, not recognized/played correctly by Digital Amplifier (AC3/DTS)
Does anybody know of a hack to make Digital Out available?
Seb

Hi,
Generally speaking, An Audio Device do need more driver besides USB driver to make itself work properly. In terms of your situation, USB driver is not enough to make your Audio Device works properly. I think S.Sengupta
is right. Actually it would be better to contact Digitrack support to confirm its product compatibility with Windows 7.
Roger Lu
TechNet Community Support

Dtt3500 and Audigy Gamer, digital output only 2 channel unless its D

Ok I recieved a response concerning my last comment but unfortunatly it did not answer my question at all. I have a DTT3500 and a sound blaster Audigy Gamer hooked up with the digital out to the /8 din adapter. I try the advanced 3d demo that came with the Audigy software and I only hear the front 2 channels, no center and no rears. The demo where you move the little icons and sound moves along with it. I have 5. activated in my windows control center along with audioHQ and digital out only is selected. my DTT3500 has 4./5. digital selected along with dolby digital/pcm audio and digital in. I am not getting the effect of multisurround at all. My center works and my rears work because playing music I can use all 5 speakers. When I use the analogue outputs I hear multisurround from the advanced 3d demo but my center doesnt work. The analogue setup sounds better but without a center channel its useless to me. Am I doing something wrong? I am using the adapter and digital DIN, what gives? The only reason I noticed I wasnt getting surround was while playing games nothing comes from behind you even on 5. games. The goldmine demo doesnt even work right, when the bird flys behind you it disappears but there is still sound from the rears. Analogue fixes this without a center but the manual and setup say to use the digital din. Do I just have a setting wrong? I would like to experiance the full capacity of multispeakers in my games.

Dennis,
With these speakers the connection that I would suggest would be to use the Digital out on the back of the sound card into the DIN Input on the DTT3500's. This will require a converter cable for /8'' Minidin to standard DIN which can be purchased from here:
http://us.creative.com/products/prod...0&product=0375
You will also need a standard DIN cable (one should have shipped with your DTT3500's).
This should give you 5. with digital output only enabled on the Audigy.
Jeremy

Create 4 digital output pulses base on input ttl signal

Hi
I am a beginner in Labview and would appreciate any advice on how to solve the following problem.
I am creating a TTL pulse train, and would like to send that into Labview as input. For every falling edge detected on the input signal, I'd like Labview to generate 4 digital output pulses. For each output pulse, I'd like to be able to specify the delay, and duration. The picture should illustrate it more clearly, with the numbers showing the intended order of magnitude.
System: NI PCI-6733 DAQ card, Labview 8.5
My daq card has 2 24-bit timers, and 8 digital I/O but I don't know what the best approach is for creating between 4-8 output pulses of this precision..should it be handled in hardware, or in software? And how would I go about it
Thanks,
-Sidney
NI Hardware: PXI-7853R, PCI-5122, PCI-6733, PXI-1036, PCI-MIO-16E-4, PCI-6110
Computer Hardware: Xeon Quad Core - 2.33 Ghz, 8 GB RAM
Software: Labview 2009, Labview FPGA 2009, Vista 64-bit, MAX 4.6, DAQmx 9.0, NI-SCOPE 3.5
Solved!
Go to Solution.

Hi Yann,
Wow, thank you so much for this example! I'm trying to take a look at it, but when I run it.. it responds with the following error message
Error -200452 occurred at Property Node DAQmx Trigger (arg 1) in DAQmx Start Trigger (Digital Edge).vi:1->reprise-1.vi
Possible reason(s):
Measurements: Specified property is not supported by the device or is not applicable to the task.
Property: Start.TrigType
Task Name: _unnamedTask<49>
This is strange too, because ive already used the Digital Edge Start trigger for a different application with this card.
-Sidney
NI Hardware: PXI-7853R, PCI-5122, PCI-6733, PXI-1036, PCI-MIO-16E-4, PCI-6110
Computer Hardware: Xeon Quad Core - 2.33 Ghz, 8 GB RAM
Software: Labview 2009, Labview FPGA 2009, Vista 64-bit, MAX 4.6, DAQmx 9.0, NI-SCOPE 3.5

Digital Output With Timer (Simulation)

Hello everyone, I just learned how to make LabVIEW program a week ago. I try to make a simulation of Digital Output by LabVIEW (my attachment). In this simulation I have a slider as an input (0-10 V), two numeric control (upper limit and bottom limit), a waveform chart that plot those 3 value, and two boolean LED (P0.0 and P0.1) as an indicator. In this simulation you can fill any number (between 0-10) in the numeric control as a limit for your slider input. If the input from a slider exceed those upper and bottom limit then the boolean LED will turn on, P0.0 if exceed upper limit and P0.1 if exceed bottom limit. The problem is I don't know how to make timer for those boolean LED. As example:
1) Make an input from slider,
2) If input (1) exceed the upper limit,P0.0 will turn on for 5 second,then turn of for 10 second,
3) If in that 10 second you change the input back to normal (between upper and bottom limit) then P0.0 will stay turn of until the input from slider exceed the upper limit again,
4)If in that 10 second you didn't change the input (stay exceed the upper limit) then P0.0 will repeat the process (2) until you the input from slider back to normal.
(Same process for input that exceed the bottom limit).
Can you help me to make this timer? Thank You (I'm sorry I made a double post):newbie
Regards
Juventom
Attachments:
Digital Output With Timer.vi ‏16 KB

Hello Juventom,
As I understand it you want to be continuously checking the value of the sliding bar and comparing that to the upper and lower limit controls whilest also chaning the LED booleans to true for 5 seconds then false for 10 seconds if the sliding bar value is outside of the limits.
To do this you would probably be best using a parallel loop design, where you have 3 while loops in place of the one you have currently. Each one of these while loops would be responsible for a part of your program (e.g. the top one would display your values on the graph and the second one who check the sliding bar value against the upper limit and then turn on the LED, etc)
I've found this tutorial about multiple loop programs and I think you should look at the section entitled "Parallel Execution"
http://zone.ni.com/devzone/cda/tut/p/id/3749
This way you can use normal delay VIs but when they run they only pause that loop rather than the whole program.
Please let me know how you get on with this, and ask me if you need further help.
James W
Controls Systems Engineer
STFC

Digital output NI 9474

Hello,
I am trying to learn labVIEW DAQ, and right now I am trying to figure out how to use NI 9474 with labview. NI 9474 is a device with digital outputs. I have attached a (poorly drawn) schematic of how I have my real circuit wired. For some reason, the voltage across the resistor is 9v instead of whatever the digital output should be when i set daq assistant to be 1 sample on demand. When I change daq assistant to continuous samples, it reads 4.6v. So I am wondering what am I doing wrong and what should my digital output be?
I have attached my vi file, so can someone please help me figure out how to use NI 9474 with labview?
Solved!
Go to Solution.
Attachments:
DO example.vi ‏44 KB
schematic.png ‏16 KB

You are supplying 9V, so you should have 9V going across the resistor. I'm thinking what is happening with the Continuous Samples is that it is toggling between High and Low. If you measured that with a DMM, you will get around 4.5V. Measure with an oscilloscope to make sure what is happening here.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

Digital Output Stopped Working

My new 1.66 Intel Core Duo Mini has been flawlessly passing digital audio to my receiver from VLC and EyeTV for close to a week. But I played a DVD for the first time today with Front Row and ran into a huge problem.
While there was no trouble playing Dolby Digital from Front Row, now I can't get any sound through the digital output outside of Front Row. VLC is silent and EyeTV needs to manually change over to "system sound output" for anything to get through. And then it's in stereo, despite Dolby Digital showing up as the soundtrack in EyeTV.
I combed this forum but couldn't find this specific problem. I saw someone recommended flashing the nvram as a possible solution to problems with the digital output but wanted to see if anyone had any other ideas.
1.66 Intel Core Duo 1GB RAM Mac OS X (10.4.6)

On a somewhat related issue: My Mac Mini 2007 won't output audio, via toslink mini adapter. It shows up in the Midi output as working and I see the red light from the cable. But when I put in a regular mini audio cable, and "move it around" in the headphone slot I get sound if it's just in the right place. Is this some sort of short in the headphone jack inside the Mini? Does this need to be replaced or is there an easier solution? Comments appreciated!

Make USB-6001 digital output always high or low in C

Hello all,
I am new to the NI DAQ interface. I have an USB-6001 and I am trying to use this device to control some logic circuit in C. So what I want to do is:
* set some digital output lines to high or low levels, and change their status when needed (in C).
I have tested the device in NI MAX -> Test Panels, and found that the device is able to do this. Then I try to do it in C. I hace checked the examples, and the function I should use is the one called "DAQmxWriteDigitalU32". I have problem in understanding its input parameters. I have tried something with my own understanding, but it does not work as I expected. Here is one test I did:
uInt32 data=1;
int32 written;
TaskHandle taskHandle=0;
DAQmxErrChk (DAQmxCreateTask("",&taskHandle));
DAQmxErrChk (DAQmxCreateDOChan(taskHandle,"Dev1/port0/line7","",DAQmx_Val_ChanForAllLines));
DAQmxErrChk (DAQmxStartTask(taskHandle));
DAQmxErrChk (DAQmxWriteDigitalU32(taskHandle,1,1,10.0,DAQmx_Val_GroupByChannel,&data,&written,NULL));
taskHandle=0;
DAQmxErrChk (DAQmxCreateTask("",&taskHandle));
DAQmxErrChk (DAQmxCreateDOChan(taskHandle,"Dev1/port0/line0","",DAQmx_Val_ChanForAllLines));
DAQmxErrChk (DAQmxStartTask(taskHandle));
DAQmxErrChk (DAQmxWriteDigitalU32(taskHandle,1,1,10.0,DAQmx_Val_GroupByChannel,&data,&written,NULL));
I want to simply set "Dev1/port0/line7" and "Dev1/port0/line0" to high level, but only "Dev1/port0/line0" responds me. The second parameter of the function DAQmxWriteDigitalU32 corresponds to numSampsPerChan. If i replace it (currently 1) with a larger value, e.g. 100, I can see that "Dev1/port0/line7" sends a number of 1 out, then return back to 0. So I guess the problem is just that I do not understand well all parameters of the function DAQmxWriteDigitalU32. Can anyone please tell me how I can set a digital output line to 1 or 0?
Thanks!
Hongkun
Solved!
Go to Solution.

Hello,
Here is a link explaining the inputs of function:
http://zone.ni.com/reference/en-XX/help/370471W-01/daqmxcfunc/daqmxwritedigitalu32/
Also here you can find a lot of examples in ANSI C
http://www.ni.com/example/6999/en/
Randy @Rscd27@

Digital Output problem once again (WIN XP, Audigy

I searched the forums with no luck, actually I searched the whole internet with no luck - so far.
My problems in a nutcase:
- I can't find the button for Digital Output (the one which enables it, Windows XP's sound mixer used to have that option with some ?windows build?, but I can't find it since I installed creative drivers, it's just gone...).
- If I find the digital output on-button with your help, is it even possible hear music with add-ons trough digital-optical cable or should I buy some mono-cable? :O
To be specific:
I have the Creative Audigy 4 Bulk, which of course supports SPDIF Digital output. I bought expesi've optical cable that I could finally use my hifi 5. speakers with movies trought computer. I have new 700 euro amplifier, and it supports everything, so the problem isn't with that one, anyways, let's get touch with the real problem.
What ever drivers I'm using, I can't find the digital output section anywhere. Creative drivers has one SPDIF-button, but it affects nowhere. So, I can't even get the Digital Sound on, because windows mixer has no button for that with my windows xp, weird. I also tried to install windows vista, and there wasn't either any options, where I could put the digital output on.
Which drivers and which add-ons should I install to get that Digital Output to work.
If I manage to find the button for digital output from some drivers, can I also listen music while it's connected via optical-digital cable, or am I just able to hear sound from dolby digital movies? Is it even possible to get everything work with my optical cable (music/games and movies at the same time).

. Your card doesn't have optical output, only "coaxial" digital. You will need a stereo (or camcorder) cable with one mini jack on one end and 2 (or 3) RCA connectors on the other. The white RCA will be the one you need.
The setting is on the "Creative AudioHQ" at the "Surround Mixer" selection. It is called "Digital Output Only". Or if you use the little icon on the taskbar, at the "Speakers" on "Speaker Selection" you have the same option (a check mark under the selection of speakers).
2. If you read the FAQ, you will get surround sound (5.) ONLY from DVD-Video that are encoded in DolbyDigital or DTS and ONLY if you pass-trough the digital signal to the receiver to do the decoding. In ALL other cases you will get STEREO PCM signal.
3. If your receiver is a decent one you should have an analog surround input (5. analog input). in that one you can plug the analog outputs from your card in order to have surround sound all the time (like in the games).
Message Edited by SoNic2367 on <SPAN class=date_text>09-25-2006 <SPAN class=time_text>06:24 AM
Message Edited by SoNic2367 on 09-25-2006 06:26 AM

How can I send digital Output at faster rate than 1ms period?

Hi!
I'm using a PCI-6229 to send digital outputs to a power source and I need to send n different numbers in binary code. I need this to be periodic so I've used a while structure and the diferent numbers as the different components of an array. In this way the while loop writes the "task" repetedly at the period I have set to the loop using "wait until next ms multiple". So, it does what I want. The problem is that I need the loop to work at a higher rate than ms. It would be great if I could make it go at 0.01 ms. I have tried and even when the "wait until next ms multiple" doesn't like doubles it tries to work at this rate but the signal is not 100% periodic and I need it to be much more precise.
Does anyone have an idea to solve my problem?
Thanks a lot,
Júlia

I think the example you want to look at is Digital - Continuous Output.vi. You can just use the onboard clock and set the sample rate to whatever you need (100kHz it looks like).
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No digital output

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