NovaStar VX400s-N all-in-one LED controller
The NovaStar VX400s-N combines video processing and LED display control in one unit. It has two HDMI 1.3 inputs, one 3G-SDI input and four Gigabit Ethernet LED outputs. A single unit supports a published total load of 2.3 million pixels and two adjustable layers for main-picture and PIP layouts.
This page follows NovaStar’s VX400s-N All-in-One Controller Specifications V1.0.0, released July 20, 2023. Check the complete model suffix, hardware version and receiving-card setup when comparing it with another VX controller.

VX400s-N specifications and output limits
| Item | Published specification |
|---|---|
| LED output | 4 Gigabit Ethernet ports; 2.3 million pixels total per unit |
| Output dimensions | Maximum width 3840 pixels; maximum height 3840 pixels, separately within total loading capacity |
| Layers | 2; adjustable size, position and priority |
| Presets | Up to 10 user-defined presets |
| Power | 100–240 V AC, 0.6 A, 50/60 Hz; rated consumption 28 W |
| Operating environment | −20 to 60 °C (−4 to 140 °F); 0–80% RH, non-condensing |
| Dimensions | 482.6 × 250 × 50.1 mm (19.00 × 9.84 × 1.97 in) |
| Net weight | 3.2 kg (7.05 lb) |
The 3840-pixel width and height limits do not describe a full 3840 × 3840 canvas. Check the screen’s total pixel count and each port’s assigned cabinets together. A backup or mosaic configuration also needs its own signal and port plan.
Match the input signal before installation
The two HDMI connectors are separate inputs, but only HDMI 1.3-1 has a loop output. The 3G-SDI input also has a loop output. A loop connector repeats its source; it is not another independent input.
- HDMI 1.3: the video-source table lists standard 1920 × 1200 at 60 Hz and a custom 3840 × 600 at 60 Hz timing. V1.0.0 specifies 8-bit RGB 4:4:4, YCbCr 4:4:4 or YCbCr 4:2:2. It does not support HDMI interlaced inputs, 10/12-bit formats or YCbCr 4:2:0.
- 3G-SDI: input resolution is up to 1920 × 1080 at 60 Hz, with deinterlacing support. The specification excludes Level B signal sources and does not provide input resolution or bit-depth settings for SDI.
Input cropping, stepless scaling and one-button full-screen display help fit a source to the screen. They do not make an unsupported input format compatible. Confirm the source device’s output format before choosing cables or converters.
Layers, backup, audio and cascading
The two layers have independent position, size and priority controls. The front panel provides MAIN/PIP, SCALE, PRESET, TEST and FREEZE buttons, while NovaLCT supports computer-based operation. Pixel-level brightness and chroma calibration requires the NovaLCT and NovaStar calibration-software workflow described by the manufacturer.
V1.0.0 lists hot backup between devices and between Ethernet ports, plus image mosaics using up to four units. These features need a configured redundant path or coordinated multi-unit layout. For synchronized output, select the appropriate common input source as the sync source; do not assume that connecting more units automatically creates one larger screen.
Audio comes from an HDMI input and is output through a multifunction card. Only LED Ethernet port 1 supports audio output, so the decoding multifunction card must connect to port 1. Include that card and its routing in the system review.

NovaStar VX400s-N selection questions
Can its USB ports play media from a USB drive?
V1.0.0 identifies Type-B USB for control-PC connection and cascade input, and Type-A USB for cascade output. It does not list USB-drive media playback. Confirm the required playback equipment instead of assuming a media-player function.
Is VX400s-N interchangeable with VX400s, VX400 or VX400 Pro?
A similar name is not sufficient to establish compatibility. Compare input formats, layers, pixel capacity, receiving cards, control workflow and backup routing for the exact models before selecting a replacement.
What information should I provide for a configuration check?
Send the complete model label, screen pixel dimensions, receiving-card model, cabinet/port map and HDMI or SDI source timing. Include layer requirements, audio decoding, backup and multi-unit mosaic plans.
Contact EagerLED about a VX400s-N system or browse LED video controllers to compare options against those requirements.
Reference: NovaStar VX400s-N Specifications V1.0.0, July 20, 2023: features on page 1, panel controls on page 2, connectors on page 3 and electrical/video-source specifications on page 6.







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