Routing multiple video feeds from a camera with limited outputs through a Zephyr sled

Gear

ZephyrCan I fly my Alexa or RED on a Zephyr?389

Master SeriesIs a used Master Series rig worth buying as a first big rig?191

BFDHow do I power my BFD receiver from my camera or sled?186

VoltCan I retrofit a Volt onto my existing sled or gimbal?168

ArtemisHow do I power my camera and accessories from an Artemis sled?166

MDRWhere can I mount my Preston MDR on my rig?143

ModulusIs there a Modulus option for HD wireless video?141

G-70Will my G-70 fit my vest, gimbal or sled?126

FI+ZCan I control iris and zoom wirelessly, not just focus?60

HU3Where can I get my HU3 repaired, refurbished or repainted?60

CineLiveHow do I pack and case my CineLive rig for transport?54

G-70XHow does the G-70X compare to Pro Titan, Xarm and other arms?46

Trinity 2Is Trinity 2 SUP 3.0 firmware safe to install or buggy?46

Ultra VestWhich vest should I choose for my body size, comfort and operator type?39

2011Sled forum

15 years old. Gear and prices may have changed since.

DisputedParticipants disagreed and reached no conclusion. Read the findings as positions, not as an answer.

A camera with only one HD-SDI output can be split using an external HD-SDI splitter or by routing the signal through a monitor loop-through output to production
HDMI output can be converted to HD-SDI using a mini-converter and then split if needed
The Zephyr sled top stage contains pre-installed wiring for future tally and power connector upgrades, though these wires may be hidden or tucked underneath
Internal wiring in the top stage can be physically moved and rerouted, but care must be taken not to pinch wires when reassembling the plastic housing
HD-SDI signals can be transmitted through standard SD video BNC connectors and cabling on short runs, though this is not officially supported
Not all professional BNC cabling is equally capable of handling HD-SDI signals; cable construction, connector design, and total cable length all affect high-frequency signal attenuation
Some rental house BNC cables may not meet HD-SDI bandwidth requirements despite using 75-ohm connectors

No confirmation from manufacturer about internal wiring capabilities beyond documented tally and power expansion
HD-SDI transmission through SD-rated cabling is an unofficial workaround with unknown reliability limits
Cable attenuation with non-HD-rated BNC can accumulate over longer runs and may fail in extended applications
The experience of running HD-SDI through SD connectors came from a specific troubleshooting situation, not a planned use case