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#1
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Sync HD losing dropping lock
Sync HD using Video REF.
Ref Present light staying lit, but Speed Cal and Locked lights fluctuate quite a bit, and will often disappear long enough and I get: "The SYNC Clock Reference is not locked. Although the system will still play, it will not properly resolve until the clock is restored. Check your cables or change the Clock Reference or Clock Source." It usually resolves itself quickly. The reference and loop sync cables seem fine - although I have not swapped the serial cable as yet, as it's hard to get to on the Mac. Is it possibly that cable, or is my Sync HD being faulty? Thanks! |
#2
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Re: Sync HD losing dropping lock
Check your reference. Make sure your reference and your session are the same.
23.98 reference and 23.98 session 24 reference and 24 session. They may lock if it's different but it won't be right. MAKE SURE WHAT YOUR REFERENCE IS!
__________________
Marti D. Humphrey CAS aka dr.sound www.thedubstage.com IMDB http://www.imdb.com/name/nm0401937/ Like everything in life, there are no guarantees just opportunities. |
#3
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Re: Sync HD losing dropping lock
What is your Video Reference? What is the origin of it?
Check the devise and verify it's the same as your session.. 23.98 or 24 frame.
__________________
Marti D. Humphrey CAS aka dr.sound www.thedubstage.com IMDB http://www.imdb.com/name/nm0401937/ Like everything in life, there are no guarantees just opportunities. |
#4
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Re: Sync HD losing dropping lock
A quick question, do you have a 75 Ohm video terminator on the loop thru BNC socket of the sync ref input on your Sync HD? Mine used to do that even with the correct reference signal if un-terminated
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#5
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Re: Sync HD losing dropping lock
Yes, what Ray said. The video ref out is a passive through and needs to be terminated.
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PTHDn 2024.3 (OSX13.6.5), 8x8x8, MacPro 14,8, AJA LHi, SYNC HD, all genlocked via AJA GEN10, 64GB RAM, Xilica Neutrino, Meyersound Acheron |
#6
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Re: Sync HD losing dropping lock
Thanks for the replies..
I forgot to mention the video ref continues on to the Aja Kona 3 breakout box. I will have to check that it is terminated properly there. Any reason to swap the order? ie ref to Kona and then sync HD? I don’t see any blips in Aja control panel. Yes, I definitely check that the correct reference is setup according to frame rate in the session. I’ll follow up next week after I get back to that room. |
#7
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Re: Sync HD losing dropping lock
Just put a 75 ohm terminator at the end of the video ref chain. The Sync HD is finicky with the feed it gets. The manual states that you need to terminate the end of the chain properly for correct operation. Believe me, it's generally needed.
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#8
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Re: Sync HD losing dropping lock
Copy that - I'm 99% sure it is terminated, but I'll take the Aja out of the loop and terminate on the Sync HD for testing and go from there...
Thanks.. |
#9
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Re: Sync HD losing dropping lock
You might want to check if your Sync HD is well cooled as its very sensitive to higher temperature.
Does this happens at the morning when the unit is cold? I had the same problem with my Sync HD in conditionered machine room until I made some room above and beneath of Sync HD in order to be well ventilated.
__________________
Michael Goorevich Sound Designer / mixer www.goorevich.com PT HD⎪N v2024.3 Ultimate ● macOS Ventura 13.6.3 MacPro 7.1 (2019) 3.2GHz Intel Xeon W 16-Core ● 96 GB RAM MTRX Studio + DADman 5.7.0.1 + MOM ● Sync HD ● AJA Kona LHi referenced by AJA GEN10 ● D-Command ES24 |
#10
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Re: Sync HD losing dropping lock
Kevin, did you sort your problem? If so what caused it?
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