Video & projection
Blackmagic Sync Generator troubleshooting
The Blackmagic Sync Generator problems live-event techs bring to Ask Roadie most (also called blackburst generator, BMD sync generator, tri-level sync). Pick your symptom, or describe your own in plain words, and get the likeliest fix first, with the manual page when there is one.
Common Sync Generator errors & problems
What techs run into most, and what's usually behind it. The step-by-step fix for your exact unit is in Ask Roadie.
- Step-by-step fixGet the fix →
All 6 outputs seem to be the same format — can I output HD tri-level and SD blackburst at the same time?
Likely cause: The unit has a single internal generator fanned out to 6 buffered outputs; there is no per-output format selection.
- Step-by-step fixGet the fix →
Can it lock audio word clock or accept an external reference input?
Likely cause: The Sync Generator is designed as the timing origin, not a follower; word clock is a separate audio domain it does not generate.
- Step-by-step fixGet the fix →
Downstream camera/switcher/monitor will not genlock or lock to the reference
Likely cause: Genlock requires the reference timing base to match the device's operating format; mismatched rate or unterminated ref input prevents a stable lock.
- Step-by-step fixGet the fix →
How do I set the output video format / reference standard?
Likely cause: Format is stored on the device; either the physical switches or the USB utility writes it.
- Step-by-step fixGet the fix →
How do I update the firmware?
Likely cause: Blackmagic pushes converter firmware through the desktop utility; the app compares versions and reflashes over USB.
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How should I distribute the reference to multiple devices — can I T/daisy-chain it?
Likely cause: Analog reference is a 75-ohm terminated signal; improper splitting changes impedance and corrupts sync.
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No output / no reference at all
Likely cause: Most dead-output cases are power (wrong/loose adapter) or an invalid switch state rather than a failed generator.
- Step-by-step fixGet the fix →
Unit not detected in Blackmagic Converters Setup utility over USB
Likely cause: The Setup utility talks to the unit only over a data-capable USB link while the unit is externally powered; charge-only cables or hub issues block enumeration.
Not on the list? Describe it your way, or paste the error code off the display. Ask Roadie works the problem with you until it's fixed or you have a clear next move.
How Ask Roadie helps with the Sync Generator
- 1. Pick the Blackmagic Sync Generator. It's already in the list.
- 2. Describe what you're seeing. In your own words, or the error code off the screen.
- 3. Get the likeliest fix first. Steps in order, the manual page when there is one, and a note when other techs have confirmed it.
- 4. Still broken? Tap 👎 and it keeps going from where you left off.
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