Topic: Microtrack problems and light dimmers..

[it-goes-to-eleven]

I had some serious v3 > mt issues on saturday...  Formatted the MT before the show and recorded the opener just fine. During the main act the MT just stopped recording about an hour in.  I repeatedly tried to restart the recording but it just wouldn't do it.. It would sort of try and then stop, showing either 1:55:xx available or 00:00:03 avail. The next morning it still wouldn't record..

The CF wouldn't mount in linux or windows. It was very corrupted. I was eventually able to recover the files using photorec.  I noticed some diginoise in the recording. At first I thought it was due to the recovery process but the noise tended to be a single out of range sample. Looking more closely, there was some more minor noise in adjacent samples.

The noise tended to occur at the end of songs... That was when the soundguy would change the lighting a bit.  So.. My mics were above the stage and I had about a 60' cable run along a water pipe. I try and avoid power cables but just wasn't careful enough.

So it seems that the lighting noise was sufficient to not only impact the recording but corrupt the mt/CF.

That rig was mk21 > v3 > r09 24/48 & mt 24/48

[busterr]

I doubt I'll be of any help, but am curious as to what brand cf card you were using, and if the MT still does not record?
The only time I experienced anything remotely close to that(the digi noise part), I was set up almost on the sbd with the mt. However I later deduced that it must have been a slightly loose coax between my v3 and the mt, because it went away after the 2nd song, which happened to be right when I adjusted how it was sitting(didn't move it far, just 180'd it). Your situation definitely sounds a bit different.
Good luck to you though, I know most lighting guys don't like tapers....(kidding), but corrupting a small defenseless mt/cf card, that's taking it too far.

[Church-Audio]

I had some serious v3 > mt issues on saturday...  Formatted the MT before the show and recorded the opener just fine. During the main act the MT just stopped recording about an hour in.  I repeatedly tried to restart the recording but it just wouldn't do it.. It would sort of try and then stop, showing either 1:55:xx available or 00:00:03 avail. The next morning it still wouldn't record..

The CF wouldn't mount in linux or windows. It was very corrupted. I was eventually able to recover the files using photorec.  I noticed some diginoise in the recording. At first I thought it was due to the recovery process but the noise tended to be a single out of range sample. Looking more closely, there was some more minor noise in adjacent samples.

The noise tended to occur at the end of songs... That was when the soundguy would change the lighting a bit.  So.. My mics were above the stage and I had about a 60' cable run along a water pipe. I try and avoid power cables but just wasn't careful enough.

So it seems that the lighting noise was sufficient to not only impact the recording but corrupt the mt/CF.

That rig was mk21 > v3 > r09 24/48 & mt 24/48

Are you saying you saw a sound engineer that actually does lighting as well? Where is this?

What type of mic cable are you using. I find it hard to believe that you got inducted SCR noise from a balanced mic cable.. I have never seen that before. I would suspect that the noise could be from another source.. Did you use AC power or battery power? If you used AC I would suspect that the dimers were "kicking back thru neutral" and that might be the cause of your problems.. I dont see how with good quality mic cables you should have any issues.

Chris
If you have time upload a sample of the noise..

[Digital Quality]

Some light dimmers create a ton of noise. I guess it's possible it could mess with a flash card or especially a cable.

[it-goes-to-eleven]

I'm using a kingston elite pro 4GB 45X.  It was the card a lot of us bought when the mt came out. It does record fine now that it has been reformatted. Never had a problem with that card.

The lighting changes were more of 'oh, song is ending, better wiggle the light controls'...

The cable was 25+35 of canare and a final 15' of mogami back by my rig. My rig was hanging in a bag attached to the protective rail around the sbd.  My rig was not connected to a/c.

I did run two sources out of the v3.. I'll have to go back and see if the r09 source showed any noise. The v3 a/d did not produce any spikes that stood out on the recording. Each instance of noise consisted of one very obviously out of range sample surrounded by a bit of much lower level noise.  I'll post a sample later.