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Gear / Technical Help => Battery Boxes, Preamps, Mixers, ADCs, and Processors => Topic started by: Craig T on January 05, 2006, 08:55:32 PM

Title: "inverted" overs? (722 a/d?)
Post by: Craig T on January 05, 2006, 08:55:32 PM
has anyone ever seen an a/d do this?  souce was V3 (digital out)> 722.  I've never seen this from the V3 before and I think the 722 is handling the digital input somehow causing the inversion at the overs (and therefore is not "bit perfect").  sounds like a pop or snap on playback - very annoying.

(http://img.photobucket.com/albums/v134/ctaraszki/rre2005-12-31-pop.jpg)
Title: Re: "inverted" overs? (722 a/d?)
Post by: MattD on January 05, 2006, 08:57:43 PM
Did you post this at sounddevicessupport.com?
Title: Re: "inverted" overs? (722 a/d?)
Post by: MattD on January 05, 2006, 09:09:28 PM
Are you registered? There's a "hardware and firmware" forum for registered users.
Title: Re: "inverted" overs? (722 a/d?)
Post by: Craig T on January 05, 2006, 09:12:30 PM
Are you registered? There's a "hardware and firmware" forum for registered users.

not activated yet.  I did send them an email, but will post to the forum tomorrow.
Title: Re: "inverted" overs? (722 a/d?)
Post by: mmedley. on January 05, 2006, 11:18:14 PM
I've been waiting over 3 weeks to be activated. I've sent emails to every imaginable address.
Title: Re: "inverted" overs? (722 a/d?)
Post by: JasonR on January 05, 2006, 11:21:36 PM
Call them at (800) 505-0625 - that did the trick for me.  No idea why they still hold the registrations this way.  If they really want to ensure that it's just for owners, it wouldn't be that hard to require a serial number or something.  This "method" is just silly.

- Jason
Title: Re: "inverted" overs? (722 a/d?)
Post by: Craig T on January 06, 2006, 01:02:18 AM
just got this response:

Craig,

You should upgrade to firmware revision 1.60, since we actually introduced a bug in 1.58 that may be what you are seeing.

From the web page: http://www.sounddevices.com/download/722-firmware.htm

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
fixed - A/D offset fix (high-pass filter, implemented in v1.57/1.58) is now applied only to analog inputs, not digital inputs.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

I believe this should correct the offset.

Jon Tatooles
Sound Devices, LLC
Title: Re: "inverted" overs? (722 a/d?)
Post by: Craig T on January 06, 2006, 03:24:31 PM
also received this:

Hi Craig,

The problem is caused by the incorrect A/D offset of the digital input
signal by one byte. We've since posted a firmware revision (v.1.60) which
addresses this issue. Please download the patch & install the update on your
recorder:

http://www.sounddevices.com/download/722-firmware.htm

Best regards,

Justin Manners
Sound Devices, LLC