LVDS is widely chosen because differential signaling is good at rejecting noise, yet that reputation can hide an important practical detail: an LVDS link is only as balanced as the physical channel carrying it. Between the transmitter and receiver are PCB breakouts, fine-pitch connectors, stripped termination zones, cable pairs, shields, grounds, bends, clamps, and nearby power circuits. A small asymmetry in any of these areas can turn a clean differential link into a source of common-mode current, electromagnetic radiation, or reduced signal margin. That is why a cable can pass continuity testing and still fail an EMC test, or work on a bench and become unstable after installation inside the final product.