Sonorus, Inc. 
 

Frequently Asked Questions from the 
STUDI/O Support Department

 

QUESTIONS

  1. My STUDI/O icon turns red, and I am getting a Loss of Real time error.  What does this error mean, and how can I prevent this from happening?
  2. What is this STUDI/O I/O INIT FAILED ERROR EMPTYING HOST PORT AT BOOT (-10603) message?

  3. How do I get rid of those little clicks and pops I hear in my audio?

  4. Iím looking to upgrade my computer; can you tell me what I should be aware of?

  5. Whatís the deal with the IRQ sharing?

  6. Does STUDI/O support Apple Sound Manager?

  7. How can I manually uninstall my STUDI/O driver (Windows 95/98/ME)?

  8. Nothing is coming out of my analog monitor output on the card.  How can I get this to work?
  9. I canít seem to get the backplate working.  Can you help me out?

  10. Iím using Audio and MIDI.  How can I get these to play in sync?

  11. Is your card supported under Windows ME?

  12. My backplate has 4 jumpers.  But in your manual, it only shows 3.  Can you explain this?

  13. Does STUDI/O support WDM?

  14. Does STUDI/O need to be the clock master?

ANSWERS

1)     My STUDI/O icon turns red, and I am getting a Loss of Real time error.  What does this error mean, and how can I prevent this from happening?

Loss of real time definition:

Windows is not designed as a real time system. So there was no way to tell if we were really running in 'real time', which means each and every audio sample getting to your ear in order, none missed. So we had to come up with our own system. What we do is have the onboard DSP keep track of each interrupt it posts to Windows. When it comes time for another one (to get the next batch of samples), it checks to see if Windows had taken care of the last interrupt. If it hasn't, then Windows is running out of time, and more than likely has lost some of the samples.  That's what Loss of Real Time as far as STUDI/O is concerned. We indicate this in our error/status panel, as a 'sticky' bit, so you know if any samples possibly got lost.  If you don't get any of these errors, you can be assured that your audio is pristine!

Solutions:

  • MS Office Fast Find

  • Virus protection

  • Hardware monitors

  • System monitor

  • Norton Monitor

  • Norton Crashguard

  • And any othersÖ

You may get Loss of real time errors when you launch major applications.  Since you're probably not simultaneously recording audio (are you?), these errors can be safely ignored.

2)     What is this STUDI/O I/O INIT FAILED ERROR EMPTYING HOST PORT AT BOOT (-10603) message?

This -10603 error means that the computer has lost communication with STUDI/O.  A simple power cycle will help solve this.  Power down the computer for about 5 - 10 seconds.  The power cycle is necessary to resynchronize the on-board DSP with the computer.  If this is a chronic problem it may  be caused by an improperly installed card - it may not be fully inserted in the slot.  To re-seat the card, first shut down the computer and remove the power cord.  Remove the card and center it over the slot, then press down firmly and verify that the gold fingers on the STUDI/O card are fully inserted into the edge connector.  If you're still getting failures, try another PCI slot.

3)     How do I get rid of those little clicks and pops I hear in my audio?

See Answer #1 and Answer #14

4)     Iím looking to upgrade my computer; can you tell me what I should be aware of?

Check out the hardware alerts that we've posted here.

 You should also stay away from any motherboard with the original VIA chipset (Apollo).  These chipsets tend to cause Loss of Real Time errors.  The VIA Apollo Pro 133A chipset is OK.

We recommend Intel CPUs.  Some users are running fine with AMD Athlons, but we've heard many reports of strange system problems and incompatibilities not limited to STUDI/O but other hardware and software as well.

We support the Intel 820 chipset, but make sure you are running Windows 95/98/ME driver version 1.996 or higher.  For NT or Windows 2000 any driver version is OK.

 5)     Whatís the deal with the IRQ sharing?

To learn about IRQ sharing: http://sonorus.com/irq/appirq.html

You will want STUDI/O on its own interrupt.  To check this, go into your System Properties.  Click the device manager tab.  You will see Computer is highlighted.  If it isnít, click on it (on the very top of the list) and go into ĎPropertiesí.  There, you will see the list of IRQ numbers, and devices.  If STUDI/O is sharing an interrupt with ĎIRQ Holder for PCI Steeringí, that is okay.  You will want to keep any hardware, and SCSI devices off of the IRQ that STUDI/O is on.  You can change the IRQ by swapping the STUDI/O board to other PCI slots, or by checking your BIOS settings and seeing if you can assign an IRQ to the slot with STUDI/O.  Note that some motherboards force IRQ sharing on certain slots.  For example, the AGP slot may share its interrupt with the first PCI slot.  And if you have more than four PCI slots it's likely that some slots share a common interrupt.

6)     Does STUDI/O support Apple Sound Manager?

Sorry, but STUDI/O does not support Apple Sound Manager.  For some time now, Apple was supposed to launch an updated Sound Manager, which would address some of the shortcomings of the current one.  We know that it would sometimes be convenient to use STUDI/O under Sound Manager, but we would have had to give up a lot of the board's capabilities.

7)     How can I manually uninstall my STUDI/O driver?

To remove your Windows 95/98/ME driver:

  1. To completely un-install the STUDI/O card, you will need to delete these files:
    Delete these files from your Windows\System folder:

    • Stutray.exe

    • Stupanel.cpl

    • Studll.dll

    • Studioui.dll

    • Studio.vxd

    • Studasio.dll

    • factory.ssf

    • user.ssf

    Delete these files from your Windows\INF\other folder:

    • SonorusSTUDIO.INF and/or

    • SonorusSONORU~1.inf

    These last INF files should be removed as they can send the wrong
    installation instructions to Windows.

     

  2. Remove the STUDI/O driver reference from the device manager.

It is not necessary to physically remove the STUDI/O card. Just remove the STUDI/O Audio Device from the Device Manager (under Sound video and game controllers). Then close Windows and power down the computer. Wait a few seconds and power up again.  Your board should be detected as a New PCI Multimedia Device and the driver requested.  Follow the instructions as you would installing a new driver.

8)     Nothing is coming out of my analog monitor output on the card.  How can I get this to work?

Check to see that the built-in mixer faders are up.  Right click on the icon, and bring up the meters and the mixer.  First, pass audio through the card.  You should now see movement on the meters.  Look at the mixer, and raise the faders corresponding to the meters.  You will also need to raise the faders to the far right of the mixer, entitled Mon 1 & Mon 2 (or L Mon & R Mon).  The input and output meters will show the current audio levels going through them regardless of the mixer fader settings.  The monitor output meters (Mon 1 and Mon2) will show the actual monitor output level as set by the Mon1 and Mon 2 faders.  

9)     I canít seem to get the backplate working.  Can you help me out?

Search your computer for a file, Syncio.reg.  Just double-click that file, and your backplate will be recognized by the computer.

10) Iím using Audio and MIDI.  How can I get these to play in sync?

If you're using Cubase VST on the PC, we recommend using the 1.37 driver.  There's something wrong with the MIDI timing under ASIO2 and the 1.37 uses the older ASIO spec.  Also, follow the steps in Answer #1.

11) Is your card supported under Windows ME?

Yes it is.  You will need to use our 1.996 driver for this.  Many people (including us) have found Windows 98 SE to be more suitable for audio workstations, so if you have a choice, you might be better off avoiding Windows ME.

12) My backplate has 4 jumpers.  But in your manual, it only shows 3.  Can you explain this?

Sure, we can explain this to you.  The manual doesn't describe a new jumper that we added.  The extra jumper is for AC-coupling the Word Clock input.  The other jumpers are moved down one.  So the default setup would be In, In, Out, In.

13) Does STUDI/O support WDM?

The official word is that we're still considering supporting WDM, and that our current drivers support all Windows versions.  

Right now, WDM is not supported by STUDI/O.

14) Does STUDI/O need to be the clock master?

STUDI/O works equally well as wordclock master or slaving to either optical input or to wordclock connected to the optional sync backplate.  The current word clock is always output from the backplate BNC output, so STUDI/O can generate wordclock from an ADAT or SPDIF optical source, or from its internal clock.

You must make sure that all of the digital audio devices that you are connecting together are properly synchronized together.  Wordclock sync is distinct from SMPTE or MTC sync (i.e. timecode) - they perform different functions.  Typically, one device is chosen to be the clock master and all other devices must slave to it.  Some devices can only serve as clock masters (such as the Alesis BRC), but STUDI/O can work either way, and with the sync backplate option, it's even more flexible.  

The number one cause of clicks and pops is improperly synchronized devices.  Also beware of looping a chain of devices, all synchronized to their inputs.  This and a lot of other improper ways of hooking things together may "almost work", but you will be plagued with clicks, dropouts or distortion.  Sync everything together and you will have a 100% click-free experience.


Macintosh is a trademark of Apple Computers, Inc. Windows is a trademark of Microsoft Inc. STUDI/O is a trademark of Sonorus, Inc. Copyright © 2001  Sonorus, Inc. All rights reserved