KYStar S20 4K LED sending box
The KYStar S20 sends video from an HDMI 2.0 or DisplayPort 1.2 source to an LED display control system. It supports input resolutions up to 4096 × 2160 at 60 Hz and a maximum total load of 8.85 million pixels. Twenty Gigabit Ethernet outputs and four optical outputs support rental and fixed-installation layouts.
Signal routing and screen setup
HDMI loop-through supports source distribution between devices. EDID management, arbitrary cross-connection and Ethernet-port redundancy help configure the screen layout. The S20 supports brightness and color-temperature adjustment and brightness/color calibration with a compatible calibration system.
Control is available through USB-B or Gigabit Ethernet, with cascade control for up to eight devices. In 3D mode, the available pixel load is halved; a compatible 3D emitter and glasses are required.
Technical specifications
| Parameter | Specification |
|---|---|
| Video inputs | 1 × HDMI 2.0; 1 × DP 1.2 |
| Maximum input resolution | 4096 × 2160 at 60 Hz |
| Ethernet outputs | 20 × Gigabit Ethernet |
| Optical outputs | 4: two active and two standby |
| Maximum total load | 8.85 million pixels |
| Per-Ethernet-port load | 650,000 pixels |
| Maximum width / height | 8,000 / 8,000 pixels; separate limits within total capacity |
| Cascade control | Up to 8 devices |
| PC control | USB-B or Gigabit Ethernet |
| 3D display | Supported; pixel load is halved |
Frequently asked questions
What is the maximum pixel load of the S20?
The maximum total load is 8.85 million pixels, with up to 650,000 pixels per Ethernet output. Width, height and total-load limits must all be respected.
Does the S20 accept 4K video at 60 Hz?
Yes. Its HDMI 2.0 and DP 1.2 inputs support resolutions up to 4096 × 2160 at 60 Hz.
How many output connections does the S20 have?
It has 20 Gigabit Ethernet outputs and four optical outputs, arranged as two active and two standby optical connections.
What changes when 3D mode is enabled?
The pixel load is halved. A compatible 3D emitter and 3D glasses are also needed.

Download Specification:
Kystar S20 LED Display Control System Sending Box Specification(Chinese)



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