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MECs show 2 different sample rates [message #108968]

Sun, 18 October 2015 16:53

JohnG

Messages: 57
Registered: April 2013
Location: Twin Cities, MN

Member

Hello All,
When I start up my paris system my master mec sample rate indicator is on 44 and my 2nd MEC indicator is on 48. With no project open. When I open a project, stays that way.

I have a 2 mec system running off a windows xp machine, with a 8 in card in each mec.

I have tried running a BNC cable from mec a to B (clock out of A and into B, and vice versa), and no cable.

The sync mode on both mecs says "Internal".

This doesn't seem right. Can anyone tell me if this is acceptable and if not , how to correct it.

I honestly don't know how long its been that way, but I can play back a current project and everything sounds ok. However I can't get a channel in mix 2 (mec 2) to pass audio for recording (I can arm the track with the record button, have a signal light on the mec but nothing on the channel meter an no sound-I double checked the patch bay connections and it works for mec A).

Any help/thoughts would be appreciated.
Thanks!
John

John, Twin Cities, MN

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Re: MECs show 2 different sample rates [message #108969 is a reply to message #108968]

Sun, 18 October 2015 18:24

kerryg

Messages: 1529
Registered: February 2009

Senior Member
Administrator

[Edited to add: sorry, that was bad advice, someone else correctly pointed out that UseHouseSync=1 is just for external clock so you'll have to make sure it's set to UseHouseSync=0 instead]

This'll give you more info - http://www.kerrygalloway.com/WikiPARIS/wikka.php?wakka=UseHo useSync

"... being bitter is like swallowing poison and waiting for the other guy to die..." - anon

[Updated on: Sun, 18 October 2015 21:17]

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Re: MECs show 2 different sample rates [message #108970 is a reply to message #108969]

Sun, 18 October 2015 20:04

JohnG

Messages: 57
Registered: April 2013
Location: Twin Cities, MN

Member

Wow,
Thanks for the quick response.
I did change housesync to 1 and also created a default ppj set to 48.

I rebooted and I could record in mec 2 8 in into the submix 2.

When I opened the project, however, only mec 1 sample rate indicator changed to 44. mec 2 indicator light stayed on 48. Does that matter?

Also, I have a cable connecting the word clock out of mec 1 to the word clock in of mec 2. Is that correct/ok and or required?

Thanks again for your quick and helpful responses.
You know this system so well.
John

John, Twin Cities, MN

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Re: MECs show 2 different sample rates [message #108971 is a reply to message #108970]

Sun, 18 October 2015 20:55

Kim W.

Messages: 189
Registered: January 2010
Location: Australia

Senior Member

John.
You are correct in connecting the word clocks together.
As far as one MEC showing 44.1, and one 48k, that's an anomaly that has always existed. Ignore it.
Kim

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Re: MECs show 2 different sample rates [message #108972 is a reply to message #108970]

Sun, 18 October 2015 20:56

JeffH

Messages: 307
Registered: October 2007
Location: Wamic, OR

Senior Member

John,

I don't know if it will address your issue or not, but I believe this is the proper config if you are not using a external word clock:

Mec A WC In : Terminator
Mec A WC Out: Mec B WC In
Mec B WC Out: Terminator

Paris.cfg
UseHouseSync=0 (the 1 value is if you are using an external word clock)

Hope this helps,

JH

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Re: MECs show 2 different sample rates [message #108973 is a reply to message #108972]

Sun, 18 October 2015 20:59

Kim W.

Messages: 189
Registered: January 2010
Location: Australia

Senior Member

Wow.
I wasn't aware of the need for terminators. I've been using two mecs for years without issue.
Thanks for the heads up though, Jeff.
Kim

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Re: MECs show 2 different sample rates [message #108974 is a reply to message #108973]

Sun, 18 October 2015 21:37

JeffH

Messages: 307
Registered: October 2007
Location: Wamic, OR

Senior Member

I remember reading about ensuring both ends of a clock signal were terminated years ago. Just always have put it into practice and haven't seemed to have issues (Currently running a 6 card system with an old p4, but implementing a i7 laptop setup in the next couple weeks).

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Re: MECs show 2 different sample rates [message #108977 is a reply to message #108972]

Mon, 19 October 2015 17:03

JohnG

Messages: 57
Registered: April 2013
Location: Twin Cities, MN

Member

Thanks for the responses everyone.
OK so the fact that my second mec shows 48 even though the project is set to 44 is a known issue?
I will reset to usehousesync=0 since I don't have a word clock.

Sorry to say but I don't know what a word clock terminator is.
Is it just a connector that goes on the unused clock connectors? Do I want the 75 ohm variety?

Thanks again!
John

John, Twin Cities, MN

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