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#1
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Sync HD for rec light?
Hi all,
I'm looking at options for an old-fashioned 'Recording In Progress' light for my studio at www.mixartist.com.au. I'd like the light on when Pro Tools records, and off in stop/play. I have an HDN Thunderbolt with 2 HD I/O (grey) and 1 Omni already, so I'm considering adding a grey Sync HD, which should be able to do that if I'm not mistaken. Has anyone done that already, and could point me in the right direction? Thanks heaps from Down Under Jan
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2010 Dolphin Award for Production / Engineering AVID Certified Instructor |
#2
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Re: Sync HD for rec light?
https://avid.secure.force.com/pkb/ar...-O-and-SYNC-HD
Yes, it'll work. But pay attention to above (especially about the manual correction.)
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Pro Tools Ult 2024.3.1, HDX 2, MTRX/SPQ, RME BBF Pro + MADIface Pro • S1 x 2, Fire Max11 x 2, Dock, iPad Air5 • Mac Mini 14,12, 12 core, macOS 13.6.6 • RAM 32GB, SSD 4TB, GPU 19 core • QNAP TVS-872XT 148TB TB3 |
#3
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Re: Sync HD for rec light?
Thank you for your quick reply!
So, they way I understand it is pin 2 of the db25 carries 5V in RecPlay, and 0V in Play or Stop. Can it drive a light directly? Or should I connect it to a relay that opens/cuts the light's power? Thank you! Jan www.mixartist.com.au
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2010 Dolphin Award for Production / Engineering AVID Certified Instructor |
#4
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Re: Sync HD for rec light?
It can't drive the light directly. Also it's pin 5/6 shorting you want. That's what the note at the bottom says (the incorrect bit about the manual)
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Pro Tools Ult 2024.3.1, HDX 2, MTRX/SPQ, RME BBF Pro + MADIface Pro • S1 x 2, Fire Max11 x 2, Dock, iPad Air5 • Mac Mini 14,12, 12 core, macOS 13.6.6 • RAM 32GB, SSD 4TB, GPU 19 core • QNAP TVS-872XT 148TB TB3 |
#5
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Re: Sync HD for rec light?
The Reference Guide has the specs for this and stuff is well explained well except for the error.
The "5V" is ~5V TTL (Transistor-Transistor Logic) level signal and a fairly anemic TTL output at that, providing a few mA (vs 7400 series TTL chips able to source hundreds of mA). If you have TTL logic driven controller you would use this. Maybe needing a TTL buffer/line driver if the TTL controller draws much current or you have a long wiring run. The relay circuits are to *drive* a relay, they are not relay switched to run a light voltage through. ... just want to make that super clear as I've seen folks assume it was. |
#6
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Re: Sync HD for rec light?
Quote:
I used a 2channel relay module with drivers built in. Made it quite easy. This circuit will runs a light on when you press play and are in record ready, then switches to a ‘record’ light when in record. You could skip the record ready side and just use the first relay for a record light. I just used the 12V DC that appears on the DB25 connector. Then on the output of the relay module you can connect whatever power supply you need to drive the lamps totally isolated from the Sync HD. I just noticed my schematic is labeled incorrectly. The record tally and record ready is reversed. Pin 2 is a TTL signal for record ready, pins 5-6 are the relay pins for the record ready tally. There’s a company that makes record lights. Punchlight.com. More expensive but much simpler solution. Last edited by VRS; 12-05-2023 at 07:46 AM. |
#7
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Re: Sync HD for rec light?
Punchlight have a lot of great recording light products, including stuff that is midi based if you wanted to avoid the Sync HD altogther.
https://www.punchlight.com/products
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Pro Tools Ultimate 2024.3. OSX 13.6.5. Win 10. HD Native. Lynx AES16e. Lynx Aurora 16. i9-13900KF. ASRock Z690 Steel Legend. 64GB Ram. AMD Vega 64. BM Decklink. Dolby Atmos Renderer 5.2. Trinnov D-Mon. D-Command. |
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