2013Operating forum
HD-SDI cable causing RF interference to studio audio system
13 years old. Gear and prices may have changed since.
What the thread found
- A camera connected via HD-SDI cable to a Steadicam rig caused interference in a nearby television studio's UHF audio system, but the interference disappeared when the BNC cable was disconnected.
- Directly connecting the camera to a monitor without using the sled's internal HD cable eliminated the interference problem.
- The issue was traced to the sled itself apparently acting as a transmitter rather than just receiving interference.
- A wireless camera and a carbon fiber sled were both present in the problematic setup.
- HD-SDI signals operate in the 1.5 to 4.5 GHz range and are susceptible to interference issues.
- Carbon fiber components can be conductive and may interact problematically with HD-SDI signal integrity.
Depends on
- The exact root cause was never definitively identified in the thread.
- The solution was not documented after the initial troubleshooting.
- The setup involved multiple potential sources of interference that were not fully isolated.
- The phenomenon was described as unusual and unexpected by experienced participants.