2016Center Post forum
Upgrading analog Steadicam sled wiring to support HD-SDI digital signals
What the thread found
- Old analog sled designs used low-voltage lemo connectors without shielding, which cannot reliably carry digital HD-SDI signals.
- Upgrading requires replacing the center post cable with a shielded coaxial version inside a proper lemo connector, typically a 19-pin design.
- Modern professional upgrades involve replacing both the center post cable and modifying the upper and lower junction boxes to accommodate HD-SDI.
- Some DIY builders have successfully added high-quality BNC connectors for HD-SDI if the center post is a hollow tube with external coax wiring rather than integrated into the cable.
- Third-party technicians offer upgrade services as an alternative to manufacturer upgrades, potentially at lower cost.
- Center post cable upgrades from aftermarket suppliers cost approximately 900 to 2700 dollars depending on labor and modifications needed.
Depends on
- The feasibility of DIY upgrades depends heavily on the specific sled construction and whether the center post is hollow or integrated.
- Pricing information is approximate and may have changed since the 2016 discussion.
- Some upgrade paths mentioned were specific to discontinued or rare equipment models.
- The discussion assumes familiarity with soldering and electronics work for DIY approaches.