LUM-310X-CI : 31’’ 4K True HDR Reference Monitor

The Best-in-Class HDR reference monitor with 1000nit & 1,000,000:1 dynamic range display is now innovated with a new color engine & video processor.

Perfect for HDR Professionals
Upgraded with a new innovative color management and proprietary monitor calibration technology, LUM-310X-CI fulfills the color requirements for EBU Grade-1B HDR monitor specification.

ZERO Video Latency
Upgraded with an innovative DRC technology, now the internal video processing time is 2 ~ 4 times faster than before, and almost ZERO Video Latency (0.2-frame delay) for 4K/60p and 4K/50p video signals (12G-SDI only).



State-of-the-art LCD technology
The LUM-310X-CI utilizes a 31” native 4K resolution LCD panel with dual layer technology, which allows for 1,000 nit max luminance and 0.001 nit black level to provide the best available contrast ratio of 1,000,000:1. The color gamut range of the display is wide enough to cover 100% of BT.709, 99% of DCI-P3, and 86% of the BT.2020 standard. In addition, a superior wide viewing angle can be enjoyed due to its proprietary S-IPS technology.

LUM_310X_CI overview 01
LUM_310X_CI overview 02

The Upgrade for the Best

Beginning with the LUM-310X-CI, all TVLogic LUM-series monitors will be upgraded with a new color engine(LogiColor), calibrated with a new calibration software (logiCALProbeCAL). These new tools will enable TVLogic monitors to reproduce SDR and HDR colors with high accuracy using scientific back data.

LUM_310X_CI overview 02

The new color processor - 'LogiColor' Engine

An improved color management system is utilized by the LUM-310X-CI for the best color reproduction and control. The Xilinx FPGA based ‘LogiColor’ engine quickly processes and converts 10-bit nonlinear YCC video signals into a 24-bit linear RGB color space (72-bits per pixel). This allows for the most accurate color reproduction, especially in mid-tones as well as details in the highlights and shadows.

LUM_310X_CI overview 03

The 'LogiColor' engine can navigate preset modes 5 times faster, and is able to provide a more accurate control over parameters such as luminance, color temperatures, EOTFs (gamma) and color gamuts.

* Color Standard Preset (HD, UHD, DCI, PQ, PQ2, HLG + User Mode: 1~6)
* Video Range (Narrow 100%, Narrow 109%, Full)
* Display Luminance (+ Clipping Level)
* SDR & HDR EOTF (Gamma 2.4, 2.6, 2.8 + BT. 2100 PQ & HLG)
* PQ EETF (Roll-on & Roll-off)
* HLG System Gamma (Auto, 1.2 Fixed)
* Color Gamut (BT.709, DCI-P3, BT.2020, Native)
* Color Temperature (D65, DCI, D93)
* Gain / Offset
* Camera Logs (Sony, Panasonic, JVC, Canon, Nikon, ARRI, Red and etc.) * - coming soon!

Display Panel Calibration

'LogiColor' uses a universal color space that covers the entire BT.2020 standard. In order to fully utilize the display panel’s color gamut, a 1D and 3D LUT are created during the calibration process to compensate for the non-linearity of the panel installed in the monitor. The colors outside of the monitor’s gamut are smoothly mapped onto the surface of the gamut while preserving the original hue.

LUM_310X_CI overview 04

Advanced 3D LUT Interpolation

A new interpolation algorithm has been introduced to the LUM-310X-CI. While maintaining the same 17x17x17 grid structure of the 3D LUT, the Triangular pyramid Interpolation (Tetrahedral Interpolation) which is used in the IS-mini, has now been implemented into TVLogic LUM-series monitors. With this algorithm, the accuracy of the color reproduction is equal to or better than 33x33x33 grid 3D LUT with cubic interpolation.

LUM_310X_CI overview 05

Best-in-Class Gamut Mapping Algorithm

Any (BT.2020) colors outside of the monitor’s gamut (color reproduction range) are smoothly mapped onto its gamut. This allows for the brightness/saturation to be changed while preserving the original hue of the (BT.2020) colors that fall outside of the monitor’s gamut.

(*A ‘Native Mode’ is available to view all the colors proportionally scaled inside the monitor’s gamut.)   LEARN MORE

LUM_310X_CI overview 06

Industry-leading Calibrator - 'logiCAL'

'logiCAL'. is a new calibration freeware that has been developed by TVLogic, available for both PC and Mac.LogiCAL performs SDR and HDR calibration to create and transmit 1D and 3D LUTs to the monitor. Once calibration has been complete, a professional grade PDF report, detailing the calibration and color reproduction analysis, is automatically generated.

Please visit 'logiCAL' page for more information.

LUM_310X_CI overview 07

Professional Calibration Report

After every calibration, the 'logiCAL' software will automatically generate a PDF report detailing the results of the SDR and HDR calibration. Users can also create an HTML version of the report in the 'logiCAL' menu once calibration has been completed. The report will provide detailed information of the calibration using numbers, various graphs, deltaE (color difference) calculations for gray levels and colors such as GretagMacbeth 24, and EBU test colors for both SDR and HDR.

Please visit 'Calibration Report' page for more information.

LUM_310X_CI overview 08

Make the most out of your probes - 'ProbeCAL'

Thanks to the Mutli-Color Matching method (80 color samples), the accuracy of the probe’s color measurement has significantly increased. Instead of using the traditional 4-color matrix method provided by probe manufacturers, this new method can enhance the measurement accuracy of mixed colors or mid-tone colors by improving the non-linearity of the probes. And also visit 'ProbeCAL' page for more information.

LUM_310X_CI overview 09

Perceptual Matching to D65 reference light source

Zero Video Latency for 4K - 'DRC' technology

An innovative DRC (Dynamic RAM Control) technology was adapted to significantly minimize internal video delay; resulting in video processing speeds that is 2 – 4 times faster than its predecessor. This technology allows for nearly ZERO Video latency (0.2-frame delay) for 4k/60p and 4k/50p video signals input through a single link 12G-SDI. (This upgrade is available with a firmware update. Please contact your local dealer or download the firmware from the TVLogic website)

LUM_310X_CI overview 10

True HDR

EBU Tech. 3320 (version 4.1) is the best reference for the color reproduction requirements of professional HDR monitors. According to this document, a professional grade HDR monitor is able to reproduce high dynamic range of luminance: 0.005 – 1,000 nits for Grade 1 HDR, 0.01 – 600 nit for Grade 2 HDR, and 0.02 – 500 nit for Grade 3 HDR.

Grade 1 and Grade 2 HDR monitors must have a wide color gamut that covers more than 60% of the BT.2020 and 100% of the BT.709 color gamut. Color reproduction for grayscale and EBU test colors must also be at tight tolerance.
True HDR
Only LUM-310X (max 1,000nit with dual layer LCD system) and LUM-310R (peak 2,000nit w/ local dimming back-light system) are utilizing the specially designed LCD panel with high dynamic (luminance) range, and are perfectly calibrated to meet all the criteria above. In this sense, we are proud to define LUM-310X and 310R as the 'True HDR Monitor'.

And other monitors with HDR-related function but within limited dynamic range are defined as 'HDR Emulation Monitor' in TVLogic.

We have many other professional monitors which support HDR standard of BT.2020 color gamut and PQ/HLG EOTFs. But, unfortunately, they can not meet all of the requirements above, so we call these monitors as 'HDR Emulation Monitor'. We will share more information on our website to explain on the things to be considered when you use these monitors for HDR contents. Please visit 'LogiColor' supported monitors web site.

※ Note: Some manufacturers are advertising their monitors with HDR EOTF and some other related function to be HDR monitors, but in TVLogic, this sort of monitors are defined as HDR Emulation Monitors, which can be compared with 'True HDR monitors' with high dynamic (luminance) range.

Various 4K/UHD Input & Output Options

LUM-series monitors support various types of 4K/UHD video inputs as below;

* Single-link SDI input up to 12G-SDI (2-sample interleave division) - Channel A & B only
* Quad-link 3G-SDI input (2-sample interleave division)
* Quad-link 3G-SDI input (quad-split division)
* HDMI 2.0 input

* Through Out: Single-link SDI up to 12G-SDI (2-sample interleave division) - Channel A & B only
* Through Out: Quad-link 3G-SDI (2-sample interleave division)
* Through Out: Quad-link 3G-SDI (quad-split division)
Various 4K/UHD Input & Output Options Various 4K/UHD Input & Output Options Various 4K/UHD Input & Output Options Various 4K/UHD Input & Output Options Various 4K/UHD Input & Output Options

The new color processor - 'LogiColor' Engine

A whole new color management is introduced to LUM-series monitors (-CI version) starting with LUM-310X-CI for best color reproduction and control.

The new color processor - 'LogiColor' Engine

'LogiColor' engine based on Xilinx FPGA, converts all the (10bit non-linear YCC) input video signal into 24bit linear RGB color space (72bit per pixel) and process all the necessary calculation very fast. A most accurate color reproduction can be achieved especially in the mid-tone colors and highlight details and dark shades.

The new color processor - 'LogiColor' Engine

LogiCAL Compatible

LUM-series monitors (-CI version) are now calibrated with a newly developed TVLogic calibration software - 'LogiCAL'. This new software is provided for free to all TVLogic monitor users and now supports both PC and Mac computers.

LogiCAL Compatible

It performs SDR and HDR calibration to create and transmit 1D LUT and 3D LUT to the monitor. Once the calibration is completed, a professional-grade PDF report is automatically created with all detailed information on the calibration and the analysis on color reproduction. Please visit ''logiCAL' page for more information.

LogiCAL Compatible

Zero Video Latency for 4K - 'DRC' technology

LUM-series monitors (-CI version) are upgraded for faster video processing. An innovative DRC (Dynamic RAM Control) technology was introduced to minimize the internal video delay according to the input video format. Now the internal video processing time is for 2 ~ 4 times faster for 4K/24p~30p and HD input, and about 200 times faster with almost ZERO latency (0.2-frame delay) for 4K/60p and 4K/50p video that is input through single link 12G-SDI. (This upgrade is available with firmware update. Please contact your local dealer or download from TVLogic website)
Zero Video Latency for 4K - 'DRC' technology

SDR Super White

In SDR and HDR modes (HD, UHD, PQ, HLG), the default video range is 'Narrow 100' (64 ~ 940) while in DCI mode, 'Full' (4~1019). You can also choose 'Narrow 109' for SDR which enables to reproduce super white up to 120nit, which means you can confirm the highlight details above 100% without clipping if the input signal carries any information above 100%.
SDR Super White


EETF (Electro-Electro Transfer Function) is useful when the display has limited luminance verses the peak luminance of the PQ contents. When the EETF is set to 'ON', the highlights over 1,000nit range are compressed into 900~1,000nit range LUM-310X-CI. This mode helps to confirm above monitor maximum brightness colors details. Of course, the monitor can not reproduce correct brightness, but under this setting, the detail of the very bright objects can be confirmed, shading or existence of clipping.

HLG System Gamma (1.2 / Auto)

HLG System Gamma varies according to the Peak Luminance of the display. If the HLG system gamma is set to ‘AUTO’, the system gamma will change according to the (clipping) luminance level. With the LUM-310X-CI, entering User mode will allow you to set the luminance level to ‘400 nit’ with a system gamma level of 1.2 to simulate how HLG will look in a monitor with a max luminance of 400 nit.
HLG System Gamma (1.2 / Auto)

Gamut Warning

When using the monitor in HDR mode of BT.2020 color space, colors that are outside of the monitor’s color gamut may be mapped onto the surface of the supported color scope with reduced saturation/brightness, while preserving the same color hue. Gamut warning function will show these mapped colors.
Gamut Warning

Native Mode

In Native mode, the monitor will tentatively skip signal processing in order to reflect all the details in the signal. Color accuracy will be lost as this mode is used only for confirming the existence of the signal information.
Native Mode

3G-SDI Level A/B

Supports 3G-SDI Level A/B input.

Audio Level Meter Display

Displays the level of the embedded sound signal together with the video signal input through the terminal such as SDI or HDMI.
Audio Level Meter Display

Blue Only / Mono

Red and Green channels are not used and only Blue or Monochrome channel is used to display the screen. This function is used to adjust the color tones (tones and saturation) of the screen using the SMPTE Color Bar. For example, after displaying the Blue channel, adjust the Color (or Saturation) and Tint (or Hue) so that the original Magenta and Cyan are of the same brightness, and the original Gray and Blue are of the same brightness.
blue only

Closed caption

Closed caption.
Closed caption

H/V Delay

Allows you to check the Blanking area and synchronize signals by displaying the horizontal and vertical intervals in the center of the screen.
H/V Delay

Key Lock

Key Lock is a password-protection function of the OSD menu so that non-authorized users cannot change the setting of the monitor.
Key Lock


Displays various kinds of aspect ratios on the screen. Wide range of markers and security areas are available with line color and curtain transparency selection. A User Marker is available if any of standard markers fits your requirements.

Range Error

Analyzes the input signal’s Luma (Y’) and chroma (C’) information. If the input signal exceeds the designated minimum and maximum values, the pixel will blink. This function allows for the user to easily identify any issues with exposure.
Range ErrorRange Error

Time Code Display

Displays the Timecode information on the screen.
Time Code Display


Displays user customized 8 characters or source ID or Tally signal of Ancillary (ANC) data on the screen.

Waveform/Vector Scope

Waveform Y: Displays the Luma(Y’), Cb, Cr component of the input signal into waveform.
Vector Scope: Displays the color components ‘B-Y’ and ‘R-Y’of the input signals onto the X-Y axis.
Display Spec

 Size  31.1"
 Resolution  4096 X 2160 (17:9)
 Pixel Pitch  0.1704mm
 Color Depth  1.07B
 Viewing Angle  178°(H) / 178°(V)
 Luminance  1,000cd/m2
 Contrast Ratio  1,000,000:1
 Display Area  698(H) x 368(V) mm
 4 X BNC  12G-SDI A/B Channel Input, 3G-SDI C/D Channel Input
 1 X HDMI  HDMI Input
 4 X BNC  12G-SDI A/B,3G-SDI C/D Channel (Active Through Out)
Input Signal
 3G SDI  2.970Gbps
 12G SDI  11.880Gbps
 HD SDI  1.485Gbps
 SD SDI  270Mb/s
 HDMI  480i/480p/576i/576p/720p/1080i/1080p/2160p
SDI Input Signal Formats
 SMPTE 425M-A/B  1080p (60/59.94/50/30/29.97/25/24/23.98/30sF/ 29.97sF/25sF/24sF/23.98sF) / 1080i (60/59.94/54)
 SMPTE 296  720p (60/59.94/54)
 SMPTE 274  1080i (60 / 59.94 / 50) 1080p (30/29.97/25/24/24sF/23.98/23.102sF)
 SMPTE 260  47.95/48/50/59.94/60p)
 Audio In  Embedded Audio/Analog Stereo (Phone Jack)
 Audio Out  Analog Stereo (Phone Jack)
FPGA Functions
 1:1 Pixel Mapping Modes for SD/HD,  3G-SDI Level A/B,  Audio Level Meter Display,  Blue Only,  Focus Assist,  H/V Delay,  Key Lock,  Luma(Y') Zone Check,  Marker,  Max Brightness On/Off,  Mono,  Time Code Display,  UMD,  User Aspect,  Various Scan Modes,  Waveform/Vector,  SingleMode
Closed Caption
 CC-608 ANC,  CC-608 LINE 21,  CC-708
 TVLogic Color Calibration Utility, Adjustable Gamma
Other Functions
 REMOTE   TVLogic’s specification
 USB   Firmware update by USB memory stick
 Ethernet   Ethernet Control support
 Stand,  Carrying Case,


Basic Accessory

AC Power Cord USB Cover

Optional Accessory


LUM-310X-CI firmware
LUM-310X-CI's firmware supports lociColor engine, and perform very accurate color reproduction for wide variety of color spaces. The architecture of color processing is completely different from older ones, so you SHOULD do calibration after firmware update.
So we strongly recommend to do firmware update preparing proper probe and enough time for the calibration.(a couple of hours)
If you have to use the monitor without calibration
If you updated the firmware from old version to LogiColor supported version, because of the difference of the color processing engine, the color of the monitor will be completely strange.
It is a temporaly method but you can import sample calibration setting to your monitor.
Please download sample data from here.

LUM-310X-CI Calibration data example download (.zip 434KB)

Start LogiCAL software to import the data and send the calibration data to the monitor by menu button and "Send LUT again" menu.
How to do firmware update
1. Download the firmware zip file and extract. There will be three files with ".bin" suffix.
2. Copy these three files to USB memory stick root folder. File format has to be FAT32.
3. Connect the power cable of the monitor and power it on.
4. Insert the USB memory in the monitor USB slot.
5. Select the S/W Upgrade Start menu to start the firmware upgrade.
The monitor display is black and power indicator will be in orange. One of the other indicator will be blinking during update. It will take more than one hour. You must not power off or remove the USB memory from the monitor during update.
6. When the update is completed, blinking led stop to blink and just lit.
Eject the USB memory and re-start the monitor by pushing power button twice.
7. Confirm the firmware version by OSD menu.
After the firmware update, please do monitor calibration. Monitor calibration can be done by logiCAL software. The calibration process will take 2.5 hours including stabilization waiting time.

Literature Download
TVLogic Product Brochure
LUM-310X-CI Manual
Here is the evaluation result of one of LUM-310X products.
Evaluation Result (PDF)
Evaluation Result (HTML)
Stabilization Process
Here is the brightness and color temperature change after power on. It requires about 60 minutes it reaches under 0.5% error between stabilized status.
LUM_310X_CI Image
Spectrum Data
LCD spectrum measured for pure red, pure green, pure blue, and white under maximum backlight brightness.
LUM_310X_CI Image 2