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BNC clocking query... [message #64654] Fri, 17 February 2006 18:03 Go to next message
uptown jimmy is currently offline  uptown jimmy   UNITED STATES
Messages: 441
Registered: September 2005
Senior Member
I've been bugging Deej about this, and I think he may be sick of me....

Is it necessary to have BNC terminator plugs on the unused MEC BNC output
jacks in order to have a stable rig?

I have a 4-card/3 MEC system, with two Kurzweil boxes rigged in and clocked
over SPDIF via a digital patchbay, and while I can always get things running
smoothly after several reboots of Paris, I tend to get long strecthes of
nasty digital hiss or digital clicking or submixes not playing before things
settle in after the 5th or 10th Paris reboot.

Also, would it help to have a physical interface on all cards? I have a 442
laying around somewhere I could hang off the 4th card.....

Thanks!
Jimmy
Re: BNC clocking query... [message #64657 is a reply to message #64654] Fri, 17 February 2006 19:50 Go to previous messageGo to next message
Deej [1] is currently offline  Deej [1]   UNITED STATES
Messages: 2149
Registered: January 2006
Senior Member
Nawwww............just a little slow on the keys tonight. Cough syrup laced
with phernegan and codiene tends to make me a bit sluggish and out of
phase....but it's definitely taking the edge off this flu, which has evolved
into walking pneumonia and a serious sinus infection.

In a nutshell.........don't daisy chain MECs from a house clock. Use
individual clock outs to the individual clock ins of the MEC

I terminate my MEC inputs........don't know if it's totally necessary, but I
do it and it seems to have added stability.

Leave your house clock set to 44.1 (if that is what you're using)
and set you default .ppj to 48k. Don't argue or wonder why. Just do it. The
system should sync reliably if you do this and it will definitely be
unreliable if you don't.

The 442 may add *instability* to a situation like this because it will
initialize at boot up of the computer whereas the MECs initialize when you
start Paris. I only had luck with a 442 on my multicard system if the 442
was attached to card A. Still, it could have been for other reasons, so it
wouldn't hurt to give it a try if you need it. There is no reason though
that you should have to have it if it's not necessary.

Deej

"uptown jimmy" <johnson314@bellsouth.net> wrote in message
news:43f681f2$1@linux...
> I've been bugging Deej about this, and I think he may be sick of me....
>
> Is it necessary to have BNC terminator plugs on the unused MEC BNC output
> jacks in order to have a stable rig?
>
> I have a 4-card/3 MEC system, with two Kurzweil boxes rigged in and
clocked
> over SPDIF via a digital patchbay, and while I can always get things
running
> smoothly after several reboots of Paris, I tend to get long strecthes of
> nasty digital hiss or digital clicking or submixes not playing before
things
> settle in after the 5th or 10th Paris reboot.
>
> Also, would it help to have a physical interface on all cards? I have a
442
> laying around somewhere I could hang off the 4th card.....
>
> Thanks!
> Jimmy
>
>
Re: BNC clocking query... [message #64659 is a reply to message #64657] Fri, 17 February 2006 19:58 Go to previous messageGo to next message
Deej [1] is currently offline  Deej [1]   UNITED STATES
Messages: 2149
Registered: January 2006
Senior Member
> I terminate my MEC inputs........don't know if it's totally necessary, but
I
> do it and it seems to have added stability.


Sorry......this should have been the MEC *outputs*

"DJ" <animix_spam-this-ahole_@animas.net> wrote in message
news:43f69b3d$1@linux...
> Nawwww............just a little slow on the keys tonight. Cough syrup
laced
> with phernegan and codiene tends to make me a bit sluggish and out of
> phase....but it's definitely taking the edge off this flu, which has
evolved
> into walking pneumonia and a serious sinus infection.
>
> In a nutshell.........don't daisy chain MECs from a house clock. Use
> individual clock outs to the individual clock ins of the MEC
>
> I terminate my MEC inputs........don't know if it's totally necessary, but
I
> do it and it seems to have added stability.
>
> Leave your house clock set to 44.1 (if that is what you're using)
> and set you default .ppj to 48k. Don't argue or wonder why. Just do it.
The
> system should sync reliably if you do this and it will definitely be
> unreliable if you don't.
>
> The 442 may add *instability* to a situation like this because it will
> initialize at boot up of the computer whereas the MECs initialize when you
> start Paris. I only had luck with a 442 on my multicard system if the 442
> was attached to card A. Still, it could have been for other reasons, so it
> wouldn't hurt to give it a try if you need it. There is no reason though
> that you should have to have it if it's not necessary.
>
> Deej
>
> "uptown jimmy" <johnson314@bellsouth.net> wrote in message
> news:43f681f2$1@linux...
> > I've been bugging Deej about this, and I think he may be sick of me....
> >
> > Is it necessary to have BNC terminator plugs on the unused MEC BNC
output
> > jacks in order to have a stable rig?
> >
> > I have a 4-card/3 MEC system, with two Kurzweil boxes rigged in and
> clocked
> > over SPDIF via a digital patchbay, and while I can always get things
> running
> > smoothly after several reboots of Paris, I tend to get long strecthes of
> > nasty digital hiss or digital clicking or submixes not playing before
> things
> > settle in after the 5th or 10th Paris reboot.
> >
> > Also, would it help to have a physical interface on all cards? I have a
> 442
> > laying around somewhere I could hang off the 4th card.....
> >
> > Thanks!
> > Jimmy
> >
> >
>
>
Re: BNC clocking query... [message #64664 is a reply to message #64657] Sat, 18 February 2006 13:02 Go to previous messageGo to next message
uptown jimmy is currently offline  uptown jimmy   UNITED STATES
Messages: 441
Registered: September 2005
Senior Member
Well, shitster, Deej. Hope you get to feeling better. If you have any
codeine left over....oh, never mind....

It's a no-go. Set default project to 48, same basic problems.

I'll have to order the BNC terminator caps. Athens is too po-dunky to carry
such things.

Couple questions:

1. What's the maximum length for SPDIF cables in my scenario?

2. Would adding a 4th MEC set things up in a more stable sceanario?

I guess worst-case scenario is running the two Kurzweil boxes via analog. I
wish to god they had just put BNC connectors on them. I don't understand why
the whole system will work perfectly one time out of ten....

Jimmy


"DJ" <animix_spam-this-ahole_@animas.net> wrote in message
news:43f69b3d$1@linux...
> Nawwww............just a little slow on the keys tonight. Cough syrup
laced
> with phernegan and codiene tends to make me a bit sluggish and out of
> phase....but it's definitely taking the edge off this flu, which has
evolved
> into walking pneumonia and a serious sinus infection.
>
> In a nutshell.........don't daisy chain MECs from a house clock. Use
> individual clock outs to the individual clock ins of the MEC
>
> I terminate my MEC inputs........don't know if it's totally necessary, but
I
> do it and it seems to have added stability.
>
> Leave your house clock set to 44.1 (if that is what you're using)
> and set you default .ppj to 48k. Don't argue or wonder why. Just do it.
The
> system should sync reliably if you do this and it will definitely be
> unreliable if you don't.
>
> The 442 may add *instability* to a situation like this because it will
> initialize at boot up of the computer whereas the MECs initialize when you
> start Paris. I only had luck with a 442 on my multicard system if the 442
> was attached to card A. Still, it could have been for other reasons, so it
> wouldn't hurt to give it a try if you need it. There is no reason though
> that you should have to have it if it's not necessary.
>
> Deej
>
> "uptown jimmy" <johnson314@bellsouth.net> wrote in message
> news:43f681f2$1@linux...
> > I've been bugging Deej about this, and I think he may be sick of me....
> >
> > Is it necessary to have BNC terminator plugs on the unused MEC BNC
output
> > jacks in order to have a stable rig?
> >
> > I have a 4-card/3 MEC system, with two Kurzweil boxes rigged in and
> clocked
> > over SPDIF via a digital patchbay, and while I can always get things
> running
> > smoothly after several reboots of Paris, I tend to get long strecthes of
> > nasty digital hiss or digital clicking or submixes not playing before
> things
> > settle in after the 5th or 10th Paris reboot.
> >
> > Also, would it help to have a physical interface on all cards? I have a
> 442
> > laying around somewhere I could hang off the 4th card.....
> >
> > Thanks!
> > Jimmy
> >
> >
>
>
Re: BNC clocking query... [message #64665 is a reply to message #64664] Sat, 18 February 2006 13:11 Go to previous messageGo to next message
uptown jimmy is currently offline  uptown jimmy   UNITED STATES
Messages: 441
Registered: September 2005
Senior Member
Also, my cable supply house sells 1% and 5% terminator caps, whatever that
means.

Which one, or does it matter?


"uptown jimmy" <johnson314@bellsouth.net> wrote in message
news:43f78cbc$1@linux...
> Well, shitster, Deej. Hope you get to feeling better. If you have any
> codeine left over....oh, never mind....
>
> It's a no-go. Set default project to 48, same basic problems.
>
> I'll have to order the BNC terminator caps. Athens is too po-dunky to
carry
> such things.
>
> Couple questions:
>
> 1. What's the maximum length for SPDIF cables in my scenario?
>
> 2. Would adding a 4th MEC set things up in a more stable sceanario?
>
> I guess worst-case scenario is running the two Kurzweil boxes via analog.
I
> wish to god they had just put BNC connectors on them. I don't understand
why
> the whole system will work perfectly one time out of ten....
>
> Jimmy
>
>
> "DJ" <animix_spam-this-ahole_@animas.net> wrote in message
> news:43f69b3d$1@linux...
> > Nawwww............just a little slow on the keys tonight. Cough syrup
> laced
> > with phernegan and codiene tends to make me a bit sluggish and out of
> > phase....but it's definitely taking the edge off this flu, which has
> evolved
> > into walking pneumonia and a serious sinus infection.
> >
> > In a nutshell.........don't daisy chain MECs from a house clock. Use
> > individual clock outs to the individual clock ins of the MEC
> >
> > I terminate my MEC inputs........don't know if it's totally necessary,
but
> I
> > do it and it seems to have added stability.
> >
> > Leave your house clock set to 44.1 (if that is what you're using)
> > and set you default .ppj to 48k. Don't argue or wonder why. Just do it.
> The
> > system should sync reliably if you do this and it will definitely be
> > unreliable if you don't.
> >
> > The 442 may add *instability* to a situation like this because it will
> > initialize at boot up of the computer whereas the MECs initialize when
you
> > start Paris. I only had luck with a 442 on my multicard system if the
442
> > was attached to card A. Still, it could have been for other reasons, so
it
> > wouldn't hurt to give it a try if you need it. There is no reason though
> > that you should have to have it if it's not necessary.
> >
> > Deej
> >
> > "uptown jimmy" <johnson314@bellsouth.net> wrote in message
> > news:43f681f2$1@linux...
> > > I've been bugging Deej about this, and I think he may be sick of
me....
> > >
> > > Is it necessary to have BNC terminator plugs on the unused MEC BNC
> output
> > > jacks in order to have a stable rig?
> > >
> > > I have a 4-card/3 MEC system, with two Kurzweil boxes rigged in and
> > clocked
> > > over SPDIF via a digital patchbay, and while I can always get things
> > running
> > > smoothly after several reboots of Paris, I tend to get long strecthes
of
> > > nasty digital hiss or digital clicking or submixes not playing before
> > things
> > > settle in after the 5th or 10th Paris reboot.
> > >
> > > Also, would it help to have a physical interface on all cards? I have
a
> > 442
> > > laying around somewhere I could hang off the 4th card.....
> > >
> > > Thanks!
> > > Jimmy
> > >
> > >
> >
> >
>
>
Re: BNC clocking query... [message #64666 is a reply to message #64665] Sat, 18 February 2006 14:17 Go to previous message
Aaron Allen is currently offline  Aaron Allen   UNITED STATES
Messages: 1988
Registered: May 2008
Senior Member
A terminator is a resistor.. the 1% / 5% deal is the tolerance to the value.
So basically, a 68 Ohm resistance could be 1% or 5% off either direction
from that value. Go for the 1% IMO.

AA


"uptown jimmy" <johnson314@bellsouth.net> wrote in message
news:43f78ef7$1@linux...
> Also, my cable supply house sells 1% and 5% terminator caps, whatever that
> means.
>
> Which one, or does it matter?
>
>
> "uptown jimmy" <johnson314@bellsouth.net> wrote in message
> news:43f78cbc$1@linux...
>> Well, shitster, Deej. Hope you get to feeling better. If you have any
>> codeine left over....oh, never mind....
>>
>> It's a no-go. Set default project to 48, same basic problems.
>>
>> I'll have to order the BNC terminator caps. Athens is too po-dunky to
> carry
>> such things.
>>
>> Couple questions:
>>
>> 1. What's the maximum length for SPDIF cables in my scenario?
>>
>> 2. Would adding a 4th MEC set things up in a more stable sceanario?
>>
>> I guess worst-case scenario is running the two Kurzweil boxes via analog.
> I
>> wish to god they had just put BNC connectors on them. I don't understand
> why
>> the whole system will work perfectly one time out of ten....
>>
>> Jimmy
>>
>>
>> "DJ" <animix_spam-this-ahole_@animas.net> wrote in message
>> news:43f69b3d$1@linux...
>> > Nawwww............just a little slow on the keys tonight. Cough syrup
>> laced
>> > with phernegan and codiene tends to make me a bit sluggish and out of
>> > phase....but it's definitely taking the edge off this flu, which has
>> evolved
>> > into walking pneumonia and a serious sinus infection.
>> >
>> > In a nutshell.........don't daisy chain MECs from a house clock. Use
>> > individual clock outs to the individual clock ins of the MEC
>> >
>> > I terminate my MEC inputs........don't know if it's totally necessary,
> but
>> I
>> > do it and it seems to have added stability.
>> >
>> > Leave your house clock set to 44.1 (if that is what you're using)
>> > and set you default .ppj to 48k. Don't argue or wonder why. Just do it.
>> The
>> > system should sync reliably if you do this and it will definitely be
>> > unreliable if you don't.
>> >
>> > The 442 may add *instability* to a situation like this because it will
>> > initialize at boot up of the computer whereas the MECs initialize when
> you
>> > start Paris. I only had luck with a 442 on my multicard system if the
> 442
>> > was attached to card A. Still, it could have been for other reasons, so
> it
>> > wouldn't hurt to give it a try if you need it. There is no reason
>> > though
>> > that you should have to have it if it's not necessary.
>> >
>> > Deej
>> >
>> > "uptown jimmy" <johnson314@bellsouth.net> wrote in message
>> > news:43f681f2$1@linux...
>> > > I've been bugging Deej about this, and I think he may be sick of
> me....
>> > >
>> > > Is it necessary to have BNC terminator plugs on the unused MEC BNC
>> output
>> > > jacks in order to have a stable rig?
>> > >
>> > > I have a 4-card/3 MEC system, with two Kurzweil boxes rigged in and
>> > clocked
>> > > over SPDIF via a digital patchbay, and while I can always get things
>> > running
>> > > smoothly after several reboots of Paris, I tend to get long strecthes
> of
>> > > nasty digital hiss or digital clicking or submixes not playing before
>> > things
>> > > settle in after the 5th or 10th Paris reboot.
>> > >
>> > > Also, would it help to have a physical interface on all cards? I have
> a
>> > 442
>> > > laying around somewhere I could hang off the 4th card.....
>> > >
>> > > Thanks!
>> > > Jimmy
>> > >
>> > >
>> >
>> >
>>
>>
>
>
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