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Calibration Problems |
richardm123uk
Ultra Wiggler
Joined: 21 Feb 2009
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Location: Leighton Buzzard, UK
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 Posted: Sat May 23, 2009 10:28 pm Post subject: Calibration Problems |
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Hi there all,
I am having difficulty with Volta calibrating my VCO's. I have tried without success with my RS95 and AFG.
I think that the cables I am using are fine. I had them custom made last week. I can effect the signal with all the settings in Volta (LFO's, Triggers.......) but just cannot get it to calibrate.
The red line is working fine (moves during change of pitch). I am using Live 7.
So the live set up simply is Audio from 1- Volta> cv-output 1/2 volta Audio To Ext. Out 1/2 (Ext. Out 1/2 being the outputs from my Ultralite MK3 into my eurorack).
2nd audio channel Audio from Ext.in 7/8 (output of VCO goes in here) audio to 1 - Volta.
Any suggestions. Also should I be hearing anything when I calibrate. Even with preview is on I just here a click or two?.
Cheers,
Richard |
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richardm123uk
Ultra Wiggler
Joined: 21 Feb 2009
Last Visit: 18 Jun 2013
Posts: 842
Location: Leighton Buzzard, UK
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| Posted: Sun May 24, 2009 6:43 pm Post subject: |
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So I just got everything working. A strange thing is when I set Volta to send CV's from Volta 1/2 to my Ultralite outputs 1 & 2 it seems to send from outputs (Ultralite) 3&4 even though nothing is plugged out from 3&4. Confused!!!!!.
Anyhow it seems that if I use my Frequenstiener in BP mode Freq & Res around 12:00 then Volta calibrates everytime.
Cheers,
R |
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system700
Guest
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| Posted: Mon May 25, 2009 11:39 am Post subject: |
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Audio in is 5.
Volta dont see to send a signal out in cali mode?
I do not get the red point in calibration modus. 
Plus there is a bug with my source. See Picture.
Thank you for your Help. |
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TWINSTATES
Wiggling with Experience
Joined: 18 Feb 2009
Last Visit: 05 Feb 2013
Posts: 444
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| Posted: Fri Jun 05, 2009 9:21 am Post subject: |
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System 700,
I have the same issue exactly.
I am not sure if I am running the latest update however.
Gonnna check now. |
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TWINSTATES
Wiggling with Experience
Joined: 18 Feb 2009
Last Visit: 05 Feb 2013
Posts: 444
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| Posted: Fri Jun 05, 2009 9:46 am Post subject: |
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Latest update fixed it.
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stretta
Ultra Wiggler
Joined: 17 Jan 2009
Last Visit: 18 Jun 2013
Posts: 757
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| Posted: Fri Jun 05, 2009 9:59 am Post subject: |
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| Quote: | | So I just got everything working. A strange thing is when I set Volta to send CV's from Volta 1/2 to my Ultralite outputs 1 & 2 it seems to send from outputs (Ultralite) 3&4 even though nothing is plugged out from 3&4. Confused!!!!!. |
This is normal, and covered in the documentation and in other threads. Basically, Logic doesn't respect the custom names AU specification. Outputs 1&2 are the 'audio' outputs from volta and the 24 sidechain outputs come after that, so the CV outputs are 'off' by two. |
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system700
Guest
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| Posted: Sat Jun 06, 2009 1:56 am Post subject: |
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| TWINSTATES wrote: | Latest update fixed it.
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goiks
Hardest Tryer
Joined: 16 Oct 2008
Last Visit: 18 Jun 2013
Posts: 1816
Location: bishop california
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| Posted: Tue Jun 23, 2009 12:45 pm Post subject: |
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If anyone can help me, I'd sure appreciate it. I had Volta running fine with my Traveler, but now I have an 896mk3 and I can't seem to calibrate. I've exhausted all I know how to do, watched the video several times and used the troubleshooting flowchart.
Mac OSX 10.5.7, Live 8.0.4, Volta 1.03. DSP on the 896 is off. Cables and levels have been checked, tried with multiple oscillators. Screenshot attached. An LFO in Volta works fine to modulate oscillator pitch. Preview gives me my oscillator tone. When I try to calibrate, Volta sends a series of voltages, and instead of discrete voltage steps changing pitch like they did with the traveler, I get a portamento effect between steps and calibration fails. I'm probably missing something obvious, but I'm at a loss to see what it is.
Last edited by goiks on Mon Jun 29, 2009 11:34 pm; edited 1 time in total |
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stretta
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| Posted: Tue Jun 23, 2009 12:49 pm Post subject: |
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The 896mk3 is not DC coupled.
The 896 and the 896HD are DC coupled. |
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goiks
Hardest Tryer
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Location: bishop california
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| Posted: Tue Jun 23, 2009 12:59 pm Post subject: |
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.
Last edited by goiks on Tue Jun 23, 2009 12:59 pm; edited 1 time in total |
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goiks
Hardest Tryer
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Location: bishop california
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| Posted: Tue Jun 23, 2009 12:59 pm Post subject: |
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| d'oh. thanks. |
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rezzn8r
Aural Enthusiast
Joined: 30 Dec 2008
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Location: Canada
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| Posted: Tue Jun 23, 2009 1:54 pm Post subject: |
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| stretta wrote: | The 896mk3 is not DC coupled.
The 896 and the 896HD are DC coupled. |
I was just looking at a MOTU 896 on craigslist. it doesn't look like the mk3, so it would be good for volta then?
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1nput0utput
Common Wiggler
Joined: 14 Apr 2009
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Location: USA
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| Posted: Tue Jun 23, 2009 3:03 pm Post subject: |
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| rezzn8r wrote: | | stretta wrote: | The 896mk3 is not DC coupled.
The 896 and the 896HD are DC coupled. |
I was just looking at a MOTU 896 on craigslist. it doesn't look like the mk3, so it would be good for volta then? |
As long as it's an original 896 or an 896HD, not an 896mk3, it will work.
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auricle
Common Wiggler
Joined: 12 Feb 2009
Last Visit: 29 Apr 2013
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Location: Moscow/Dudley
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| Posted: Tue Jun 23, 2009 3:11 pm Post subject: |
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| Interestingly, it says on the Volta page of MOTU's website that any of their interfaces will work. |
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stretta
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| Posted: Tue Jun 23, 2009 3:15 pm Post subject: |
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| Quote: | | As long as it's an original 896 or an 896HD, not an 896mk3, it will work. |
Yup.
pin 2 = tip
pins 1 AND 3 = sleeve
The 896 and 896HD use a cross coupled DC coupling scheme, so you end up with double the voltage output by shorting those pins (pretty much the opposite of how we advise TRS interfaces)
You'll get around +7v out of the 896 or 896HD.  |
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stretta
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| Posted: Tue Jun 23, 2009 3:17 pm Post subject: |
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| auricle wrote: | | Interestingly, it says on the Volta page of MOTU's website that any of their interfaces will work. |
Really? What is the URL where it says any MOTU interface will work? |
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auricle
Common Wiggler
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Location: Moscow/Dudley
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| Posted: Tue Jun 23, 2009 3:34 pm Post subject: |
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| Quote: | | An audio interface with DC-coupled outputs, such as any MOTU FireWire, USB2, or PCI audio interface with quarter-inch TRS outputs. |
Taken from http://www.motu.com/products/software/volta/specs.html
Although I didn't know that the 896Mk3 has XLR connectors for it's outputs so my mistake. Sorry 
I don't think there is a solution for 24 outputs for a modern Mac Pro as the 24I/O uses the PCI-424 DSP card. I think that new Mac Pros use PCI-E only? |
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stretta
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| Posted: Tue Jun 23, 2009 4:00 pm Post subject: |
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| Quote: | | I don't think there is a solution for 24 outputs for a modern Mac Pro as the 24I/O uses the PCI-424 DSP card. I think that new Mac Pros use PCI-E only? |
The PCI-424 (which comes in an e variant) works fine for me and my 8-core Mac Pro. |
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auricle
Common Wiggler
Joined: 12 Feb 2009
Last Visit: 29 Apr 2013
Posts: 223
Location: Moscow/Dudley
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| Posted: Tue Jun 23, 2009 6:06 pm Post subject: |
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| stretta wrote: | | Quote: | | I don't think there is a solution for 24 outputs for a modern Mac Pro as the 24I/O uses the PCI-424 DSP card. I think that new Mac Pros use PCI-E only? |
The PCI-424 (which comes in an e variant) works fine for me and my 8-core Mac Pro. |
Wow, I'm doing well this evening! I didn't realise the PCI-424 came in PCI-e as well.
Thanks for the info, Stretta. |
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goiks
Hardest Tryer
Joined: 16 Oct 2008
Last Visit: 18 Jun 2013
Posts: 1816
Location: bishop california
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| Posted: Mon Jun 29, 2009 11:33 pm Post subject: |
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I'm sorry to keep posting here with what feels like stupid questions, but now I'm trying to use my 896mk3 for audio, and a traveler (not mk3) exclusively for volta. mac osx current, live 8.0.4, volta 1.03. i think i have a handle on how it should be set up, and had it working fine without the 896 in the picture.
i have the traveler hooked up to the 896 via firewire (a long one, 10'), and the 896 to my computer. calibration doesn't stick. i have to try multiple times to calibrate, and when it does work it drifts upward when playing notes at the higher end of the range.
i don't have a dc adapter to power the traveler directly. could that be the problem, or the length of the firewire cable? thanks for any help. |
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