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Flanders Scientific XM311K 31" 4K HDR LMCL Monitor with 12G/6G/3G/HD-SDI Inputs

Flanders Scientific
Abel Code: FSI-XM311K
Mfr. Code: XM311K
This 31" 4K HDR & SDR reference master monitor is equipped with professional 12Gbps SDI inputs, 1000cd/m2 peak luminance, support for both PQ and HLG EOTFs, multiple color gamut selections, and a contrast ratio of 1,000,000:1.
Key Highlights
  • 31" 4K SDR/HDR Reference Monitor
  • LMCL Panel
  • 1000cd/m2 peak luminance

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The Flanders Scientific XM311K 4K HDR LMCL Monitor with 12G/6G/3G/HD-SDI Inputs is a 31" HDR and SDR reference master monitor with true 4K resolution, equipped with professional 12Gbps SDI inputs. The XM311K qualifies as a Dolby Vision mastering monitor. A fullscreen peak luminance of 1,000cd/m2, support for both PQ and HLG EOTFs, multiple color gamut selections, and a contrast ratio of 1,000,000:1 make the XM311K ideal for a wide variety of demanding HDR workflows.

Light Modulating Cell Layer 

LMCL is a groundbreaking new LCD technology that introduces an independently controllable layer of light-modulating cells between the backlight and traditional display cell. This allows for greatly expanded, individual pixel-level control of light intensity, resulting in several key benefits when compared to traditional LCDs (including truer black levels, much higher contrast ratios, no halation/flare artifacts, and no loading behavior). Compared to OLED technology, LMCL has the distinct benefit of avoiding burn-in, as well as being able to maintain consistent peak luminance regardless of overall scene brightness.


12Gbps SDI connections greatly simplify room design by allowing you to feed 4K and UHD signals to the display over a single cable. Quad 1.5Gbps and 3Gbps SDI connectivity are also supported in both 2SI and Square Division-based variations, ensuring compatibility with practically any type of 4K or UHD output. The XM311K supports advanced 12bit 4:4:4 YCbCr, RGB, and XYZ signals setting it apart from less advanced monitoring solutions.

The XM311K features the unique ability to simultaneously supply a clean 12G / 6G loop-through and real-time downconverted 3G or 1.5G output. Any incoming single link 4K or UHD signals can be converted to 2K or HD outputs for downstream HD monitors or scopes, all without needing any standalone down conversion equipment.

Remote Control

The IP Remote Utility can be used to remotely toggle functions, switch inputs, and navigate the menu on Flanders Scientific monitors using your Mac or PC's keyboard, mouse or control panel (also available for iOS devices).

Native 4K Resolution

The XM311K is a true 4K resolution (4096 x 2160) monitor that supports full screen viewing of HD, Ultra HD, and 4K content.

Advanced Signals Status Detection

XM series monitors automatically read payload ID (VPID) information embedded in SDI signals and lock to the signal accordingly. This information can also be temporarily displayed whenever a format change is detected, so you can be sure that what you intend to output to the monitor is what the monitor receives.

A VPID override toggle is also provided, allowing users to manually configure the monitor in instances where the payload ID may be missing or incorrect.

Two Deinterlace Options

View interlaced video with correct field order or combine fields and display interlaced signals as progressive.

HD to UHD Upscaling

HD content is displayed without interpolation by representing every pixel from the incoming source as four pixels on the panel. This allows for accurate signal representation on screen by avoiding interpolation methods that might mask or omit image issues.

On-Set Color Management

The XM311K features direct compatibility with on-set color applications like LiveGrade Pro, Prelight, FireDay, and FirePlay (sold separately) for real-time color manipulation without the need for a standalone 4K LUT box.

Multi-Cam Monitoring

The XM311K is ideal for multi-camera monitoring applications, with support for simultaneous viewing of up to four genlocked HD feeds and the additional ability to view any feed in full screen, as needed.


The XM311K is equipped with 4K compatible, real-time Waveform and Vector Scope functions.

LUM Coloring (Customizable Exposure Check)

Four adjustment points from 0-100% allow you to establish specific target areas to be shown in false color or greyscale.


Choose from a wide assortment of standard markers and safety areas that can be displayed as lines, translucent overlays, or solid overlays. Lines and overlays have selectable colors for instant customization.

Advanced LUT Processing Options

XM Series monitors have the unique ability to process 3D LUTs using your choice of trilinear or tetrahedral interpolation. Trilinear LUT interpolation is very common and having this option allows you to process LUTs as they will frequently be seen elsewhere. More advanced tetrahedral LUT interpolation, while not as ubiquitous, allows for a higher degree of precision with better on screen performance. 

Supported SDI Formats:

  • SMPTE-274M
    • 1080i (60/59.94/50) 
    • 1080p (30/29.97/25/24/24PsF/23.98/23.98PsF)
  • SMPTE-296M
    • 720p (60/59.94/50/30/29/25/24/23.98)
  • 2K
    • 2048x1080 (30p/30PsF/29.97p/29.97PsF/25p/25PsF/24p/24PsF/23.98p/23.98PsF)
  • SMPTE-372M
    • 1080p (50/59.94/60) 4:2:2 YCbCr, RGB 
    • 1080i (29.97/25/24/23.98) 4:4:4 YCbCr, RGB 
    • 1080p (30/29.97/25/24/23.98) 4:4:4 YCbCr, RGB 
    • 720p (60/59.94/50) 4:4:4 YCbCr, RGB
  • SMPTE-425M-AB
    • Level A & Level B supported
    • Level B supports 2 x SMPTE
    • 292M image format mapping
    • 372M image format mapping
    • RGB, YCbCr, & XYZ supported
      • 12 & 10bit 4:2:2 1920x1080p (60/59.94/50) 
      • 4:4:4 1280x720p (60/59.94/50/30/29.97/25/24/23.98) 
      • 12 & 10bit 4:4:4 1920x1080i (60/59.94/50) 
      • 12 & 10bit 4:4:4 1920x1080p (30/29.97/25/24/24PsF/23.98/23.98PsF) 
      • 12 & 10bit 2k (2048x1080) (30p/30PsF/29.97p/29.97PsF/25p/25PsF/24p/24PsF/23.98p/23.98PsF) 
      • 12 & 10bit 2K (2048x1080) (60p/59.94p/50p/48p/47.95p) 
      • *XYZ mapped to Selected Color Gamut on Color Management Menu
  • 4K & UHD / ST2081 & ST2082
    • Single-Link 12G 
    • Single-Link 6G 
    • Dual-Link 6G 
    • Dual-Link 3G Square Division  
    • Quad-Link 3G Level A Square Division 
    • Quad-Link 3G Level B Square Division 
    • Quad-Link 1.5G Square Division
    • 10 & 8bit 4:2:2 4096x2160p (23.98/24/25/29.97/30/47.95/48/50/ 59.94/60) 
    • 10 & 8bit 4:2:2 3840x2160p (23.98/24/25/29.97/30/47.95/48/50/ 59.94/60) 
    • 12 & 10bit 4:4:4 4096x2160p (23.98/24/25/29.97/30) YCbCr & RGB 
    • 12 & 10bit 4:4:4 3840x2160p (23.98/24/25/29.97/30) YCbCr & RGB
    • NOTE: Quad-Link 2SI support to be added via future firmware update.

What's in the Box

  • Flanders Scientific XM311K 31" 4K HDR LMCL Monitor with 12G/6G/3G/HD-SDI Inputs


Key Highlights

  • 31" 4K SDR/HDR Reference Monitor
  • LMCL Panel
  • 1000cd/m2 peak luminance
  • 1,000,000:1 contrast ratio
  • Professional 12Gbps SDI inputs

Inputs & Outputs

Audio I/O:
1 x Audio Input - Mini-Jack
1 x Audio Output - Mini-Jack


Monitor Resolution:
Monitor Input:
1 x DisplayPort - 4096x2160@30P 10bit
4 x BNC - 12G/6G/3G/HD-SDI
Monitor Size:
Monitor Audio Options:
2 x Internal Speaker (Stereo)
Monitor Brightness:
1000Nits - at L20 (1,000 nits at L60)
Monitor Type:
LMCL - Light Modulating Cell Layer Liquid Crystal Display; 99.99% Pixel Efficiency
Mount Points:
VESA Standard Screws - 100mm (VESA Mount sold separately)
Includes Standard Pedestal Feet
Display Functions:
3D LUTs - REC709/DCI-P3/Rec2020*/Custom (*does not cover entire Rec2020 color gamut)


Input Voltage:
100-240V AC
Power Input:
AC - IEC C14
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