top of page


The Postium OBM-W Series is designed for UHD/HD studio production and mobile truck monitoring and encompasses seven models from 18” to 55”. All models display UHD/4K signals scaled-down to native 1920×1080 resolution.

All OBM-W Series monitors can be connected via Ethernet and controlled remotely on the network. The System Data Copy Function allows users to save the monitor configuration and adjustment settings and load them to other monitors. This is useful for multiple monitor systems, allowing the transfer of one monitor’s setup and adjustment data to another or many.

18″ HDR 4K Monitor


21.5″ HDR 4K Monitor


24″ HDR 4K Monitor


32″ HDR 4K Monitor


46″ HDR 4K Monitor


32″ HDR 4K Monitor


55″ HDR 4K Monitor


42″ HDR 4K Monitor


Key Features 4K W Series Monitor

· 12G/6G-SDI(4K) 2 Channel Input & Output, 3G/HD-SDI (Level A/B) 2 Channel Input & Output
· 12G-SDI Single Link 4K
· 6G-SDI Dual Link 2-S.I. 4K  
· 3G-SDI Quad Link Square Division 4K
· 3G-SDI Quad Link 2-Sample Interleave (2-S.I.) 4K           
· Dual SFP Module Inputs (ST 2022-6 Support)
· HDMI®(2.0) Input
· HDR(High Dynamic Range) Display supporting PQ (ST 2084), Hybrid Log Gamma, S-Log3 
· 3D-LUT for Accurate Color Reproduction 
· Supporting ITU-R BT.709, SMPTE-C, EBU, DCI-P3, ITU-R BT.2020
· 1.07 Billion Colors
· Gamut Error  
· Black Stretch 
· Camera Log Conversion     
· Custom 3D LUT file Import Through USB
· Gamma Selection (1.0 ~ 3.0)
· Color Temperature (3200K, 5500K, 6500K, 9300K, USER 1/2/3, D-CINEMA)
· Monitor Control via Ethernet, RS-422
· Camera Log Mapped SDI Loopout
· 3G-SDI Quad Link Input ⇒ 12G-SDI/3G-SDI Single Link Output
· Image Division & Link Order Auto Detection   
· Waveform, VectorScope (Wave + Vector, Waveform Wide, Position Selection)
· HDR Waveform
· Audio Delay (Lip sync) Function (0~170ms)                         
· Various Markers (EBU, 4:3, 16:9, 1.85:1, 2.35:1, Variable Custom)        
· Zero Scan
· Time Code Display (Position, Size Selection)          
· De-embedded 8~16ch Audio Level Meter
· Internal Pattern Display for Color Test (Black ~ 100% White, Color Bar)
· Remote Control via GPI(RJ-45) Port
· False Color : Zebra, Color Pattern, ARRI
· Easy Firmware Update by USB            
· Closed Caption (608, 708)
· System Data Copy 
· Key Lock & Password Lock
· H/V Delay   
· Blue/Mono Only       
· Focus Assist                
· 3 Color TALLY Lamp
· HDR Auto Setting
· HDMI 2.0 Support
· Aspect
· Freeze
· Fast Mode   

Display Functions

Wide Color Space Support including DCI-P3 and ITU-R BT.2020 is controlled with an advanced 3D LUT (Look Up Table) to reproduce various color spaces accurately with smooth, artifact-free grayscale steps. Available color gamuts are DCI-P3, ITU-R BT.2020, ITU-R BT.709, SMPTE-C, EBU, and Native.

Versatile 4K/QFHD Input Capability

The OBM-U** 8K/4K series is equipped with standard 12G-SDI input interface(x4) and support 4K/8K Quad Link 2-sample inter-leave signals and 4K Quad Link Square Division signals. 

The OBM-U** 8K/4K Series can accept up to 7680×4320/23.98,24,25,29.97,30,50,59.94,60p and 8192×4320/23.98, 24, 25, 29.97, 30, 50, 59.94, 60p.

Custom 3D LUT File Import

The OBM-U**8K/4K Series allow the user to import 3D Look-up Table for accurate and consistent color match- ing between indivisual displays as well as using customized ‘looks’ that have been created by 3rd party color-grading applications. 32^3, 33^3, 64^3 and 65^3 cube file is supported.

Camera Log Selection

The OBM-U**8K series have the built-in camera LUT of the various camera manufacturers. It allows users to load the following camera logs. Log-C, C-Log / S-Log2, S-Log3 / J-Log1
The more camera LUTs will be updated.

Camera Log Mapped SDI Loopout 

This function allows to load the camera log to the original image and then send the camera log mapped image to another monitor through SDI loop out.

High Dynamic Range(HDR) Display Function 

The OBM W series provides the function to display the High Dynamic Range footage.
Postium HDR function allows users to view both highlights and shadow detail of scenes at the same time, thus resulting in more natural and realistic images.
The OBM W series supports PQ EOTF (SMPTE ST 2084), Hybrid Log Gamma and S-Log3.

HDR Mode

SDR Mode

OBM-HDR provides the function of comparing HDR and SDR(Standard Dynamic Range) on the displayed image on the OBM series simultaneously.

HDR Mode

SDR Mode

Focus Assist

Focus Assist controls the aperture level of a video signal and displays images on screen with sharpened edges to help camera focus operation.

False Color

False Color indicates the Luma (Y) level of the input image. If a certain Y level is set, the pixels with the designated Luma (Y) level are displayed with a zebra pattern or a color pattern. There are display modes – Zebra, Variable, ARRI, and Comparison..

This mode displays the Luma(Y') level of the input
image in zebra pattern.

False Color Variable
This mode allows the user to adjust White clipping, Pink level, Green level, Black Clipping.

False Color Comparison  
This function enables the user to divide the picture side by side, and compare the original image on the left half and the False Color image on the right half.

False Color ARRI
The color pattern is displayed with ARRI camera standard.

Gamut Error

Gamut Error Type can be observed in 3 modes.

Type 1
when the targeted color space is selected as BT.709, the pixels outside of the targeted color space are displayed as Black Zebra.
The pixels over Y Maximum, Chroma Maximum, RGB Maximum are displayed as Black Zebra, and the pixels below Y Minimum, Chroma Minimum, RGB Minimum are also displayed as Black Zebra.

Type 2
when the targeted color space is selected as BT.709, the pixels outside of the targeted color space are displayed as Black or White Zebra.
The pixels over Y Maximum, Chroma Maximum, RGB Maximum are displayed as Black Zebra, and the pixels below Y Minimum, Chroma Minimum, RGB Minimum are displayed as White Zebra.

Type 3
when the targeted color space is selected as BT.709, the pixels inside of the targeted color space are displayed as Mono, and the pixels outside of the targeted color space are displayed as the color. In this type, black and white area is not recognized.

Black Stretch

Black Stretch increases visibility in dark areas without degradation of image quality in bright areas. This mode can be used to increase shadow detail without changing absolute black level and without affecting mid-tones.

Black Stretch Off

Black Stretch On

4K HDR Waveform Monitor and Vector Scope Display

modes enable users to monitor sources using the internal Waveform and Vector Scope individually or simultaneously. 

The position of Waveform and Vector Scope can be moved between Top Left, Top Right, Bottom Right, and Bottom Left.

HDR Mode + HDR Waveform

SDR Mode + SDR Waveform

HDR Waveform

SDR Waveform

Adjustable Gamma

control allows for incremental compensation between gamma correction values of 1.0 and 3.0 — thereby ensuring that the decoded image isn’t too bright (no gamma correction) or too dark (over correction).

Gamma 1.8

Gamma 2.4

4K/QFHD Mode

The LCD panel resolution of OBM-U318K/278K/248K is QFHD(16:9) 3840×2160, so if the input signal is 3840×2160 1:1 mapping is supported. If the input signal is DCI 4K(4096×2160), 1:1 mapping is not supported.

[Zero Scan]

Panel 3840x2160(16:9)        Input Image 3840x2025

Panel 3840x2160(16:9)        Input Image 3840x2160

When the 4096×2160 signal is fed, if you select Zero Scan using [Scan] button on the front panel, the picture is scaled to be displayed on the panel of 3840×2025 resolution with maintaining 1.89:1 ratio.

[1:1 Scan]

When 1:1 Scan mode is selected with the [Scan] button in 1920×1080, 1280×720 mode, etc., it is placed in the center of the screen as above. A 1:1 mapped image is output.

Various Frame Markers/Mattes

Various Frame Markers/Mattes are available on the OBM-U series, including aspect, area, and center markers. In addition, the detailed display settings of each marker are allowed. For example, the color, brightness, horizontal/vertical position, and thickness of aspect markers can all be adjusted.

Display various markers

Custom marker

Aspect Mat 5

Input Signal Format Support

Single Link 12G/6G/3G/HD-SDI, Dual-Link 6G/3G-SDI, Quad Link 12G/6G/3G/-SDI signals can be
Input to the SDI In connectors of this monitor.
Up to 4-channel Single Link 12G/6G/3G/HD-SDI signals, 1-channel Dual-Link 6G/3G-SDI or 1-channel Quad-Link 12G/6G/3G-SDI signals can be input. Use the appropriate input connectors depending on the input signal, referring to the table below.

Single Link 12G-SDI

Dual Link 2-Sample Interleave(2-SI)

Quad Link 2 Sample Interleave (2SI)
Each link contains a full image at 1/4 resolution. 2SI mode uses four Sub-image and alternates the samples every two pixels and every line instead of slitting the image into four quadrants.

12G-SDI Single Link Square Division Moad

Meets the Return Loss Standard, SMPTE ST 2082-1:2015   

In the professional broadcasting video industry, Return Loss is an important parameter that measures the reflected signal that bounces back from a terminated device. If the broadcast monitor has the poor return loss, the level of reflected signal negatively impacts the signal integrity of the loop-out signal.

The OBM-U**8K monitors meets the requirements of Return Loss specified in SMPTE ST 2081-1:2015, so that the OBM-U**8K monitors provides the high signal fidelity.


<SMPTE ST 2082-1:2015 Requirements>

12G-SDI (ST 2022-6) over IP is supported in the OBM-U**8K series via an SFP interface, which allows the use of various SFP modules. The OBM-U series monitors can display the 12G-SDI over fiber and the 12G-SDI Single Link over IP through the integrated SFP interface.

bottom of page