This IS the Avid L2: Re: [Avid-L2] DNxIO not locking to External Sync with Avid 8.5.3?

Monday, February 13, 2017

Re: [Avid-L2] DNxIO not locking to External Sync with Avid 8.5.3?

The sync comes into the bay and goes to the 7020 and is looped now into my newly added DNxIO. I have confirmation on the Tek 7020 of the sync signal registering properly. I also have an old analogue 1750 just to look at the signal and it is fine in shape and voltage without excessive jitter.

When I'm running the Nitris DX in this bay I have not problem locking the scope and the Avid to external sync and seeing it lock without any drift on the 7020 scope. Now using the DNxIO I can't get the signal to lock when setting the scope to external sync.

When I go to the BM Video Desktop control panal/driver interface I don't see anything under the BNC Reference Icon. I'm assuming the dashed lines under the BNC Icon for Reference would display the presence and perhaps type of sync coming into the DNxIO like it does with the other icons for video output. The outputs display 1080P or 2160P under their icons depending on if I have the Avid Hardware setting to 1920x1080 or 3840x2160.

In the output section the far right "Composite Icon has just a dash over the word composite. In the section to the right labeled "Ref Input" there is a BNC icon with a light grey dash below it and another darker grey dash below that. I would think that would read out where the top dash is what type of sync it detects on the input. Also given the output displays as unlocked on the scope I think something is whacky. I am very confident the sync signal is properly patched to the DNxIO ref input. I feel this because when I pull the connector off I can see the trilevel sync jump to double level indicating the line is unterminated. Plugging the cable back in and the level goes back to normal as displayed on the scope.

Unfortunately this is my DNxIO from my home system so I can't go try this at home at this point. I can't recall if I've even used the external sync on my home system when running the DNxIO.

---In Avid-L2@yahoogroups.com, <bogdan_grigorescu@...> wrote :

Not clear from your description how things are connected on the sync side:

gen10>7020>DNxio or gen10>DNxio>7020 ?

www.finale.tv

From: "John Moore bigfish@... [Avid-L2]" <Avid-L2@yahoogroups.com>
To: Yahoogroups <avid-l2@yahoogroups.com>; Yahoogroups <editing-list@yahoogroups.com>
Sent: Monday, February 13, 2017 3:54 PM
Subject: [Avid-L2] DNxIO not locking to External Sync with Avid 8.5.3?

I have a 4K 4096x2160 Avid project. I've added a DNxIO to the mac based SNDX system with the newer HIB card. Everything is basically working but I noticed that I can't seem to lock the output to house sync. I'm feeding my Tek 7020 with house sync from a Gen 10 unit. I've tried both 23.976 Psf and 23.976P. The Tek scope registers the external sync source correctly and I even have the signal running through an old Tek 1750 scope just to monitor the levels and make sure things are terminated properly. I can see proper level tri level but when I loop the sync signal to the DNxIO Ref in the output from the avid doesn't lock when I set my Tek scope to external sync.

This works with the Nitris DX in the past.

When I open video output settings and click more I get the Video Desktop preference box. I don't see anything listed under the bnc Ref icon. The other connector icons say 2160P etc... I'm assuming the video desktop preference box works similar to an AJA control panal and I would expect that the missing lines of text under the Ref bnc Icon would display the type of sync the unit is receiveing. Is that how they work. I haven't had a chance to try anything but 23.976P and 23.976Psf Trilevel but those should work as far as I know.

Is there a bug with Avid and DNxIO regarding reference locking? I'm running the Avid supplied Video Desktop drive 10.7.

John Moore Barking Trout Productions Studio City, CA bigfish@...

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Posted by: bigfish@pacbell.net

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