18.5" High-Performance HD/SD LCD Widescreen Monitor

Product Code: BT-LH1850E

High performance, low cost monitor

3D LUT for accurate colours, normally only found on high cost monitors

Versatile connectivity with 2 x HD/SD-SDI, HDMI, VBS and DVI-I inputs

RS-485 In-Monitor Display remote for video wall applications

ECO friendly, Low power consumption at only 22W (DC)

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The BT-LH1850 is an 18.5" high-performance HD/SD LCD production monitor with full 1366 x 768 resolution and impression new features including an HD and SD closed caption display, vectorscope, waveform monitor for R/G/B signals, an RS-485 serial remote, and an eco-friendly panel with mercury-free LED backlight that provides remarkably low-power consumption, (22W, representing a more than a 50% reduction from the prior LH series model). With HD and HDMI connectivity, the versatile LH1850 also offers a 3D look-up table (LUT), which produces faithful  colour hues and smooth gradation, together with quick-response motion images.

The WXGA-resolution LH1850 delivers the professional features and outstanding price-to-performance users have come to expect from a Panasonic LH-Series monitor. And now Panasonic adds additional versatility in the LH1850, including the ability to view any camera source with an HD/SD SDI or HDMI output, and the display of HD and SD closed captioning.

The LH1850's 3D-LUT with 6-pole  colour correction includes a look-up table for each signal level, and applies 10-bit image processing to each RGB  colour to balance the six coordinate axes of the three primary  colours (RGB) and their complementary  colours (CMY), resolving  colour drifting at low light levels and keeping  colours vividly natural. It also delivers an array of additional features necessary in demanding broadcast and production environments, including setting for gradation, and selectable  colour temperature of 9300 K/6500 K/5600 K, or 3000 K to 9300 K.

Using SD SDI or video input, the LH1850 can display closed captions and supports both the EIA/CEA-708 HD-SDI and the EIA/CEA-608 SD-SDI closed captioning standards, and can display up to eight windows simultaneously. Like the monitor's waveform monitoring display function, the LH1850's vectorscope can now display all lines of the SDI input signal (Y/R/G/B). Various markers can be displayed in both 16:9 and 4:3 aspect ratios, including aspect (4:3, 13:9, 14:9, CNSCO 2.39, CNSCO 2.35, 2:1, and VISTA in 16:9 mode), safe area and centre. A simple cross hatch overlay can be displayed to check the tilt of the camera. The monitor's Pixel-to-Pixel function displays inputted video without any resizing, and a still frame display function can freeze a frame and display it as a sub-screen. The  colour audio level meter displays the input level of embedded audio, and a Time Code display shows the value of the VITC, LTC or UB time code. 

The LH1850 incorporates diverse video inputs and remote terminals to realize superb operability in a system configuration. Two SDI inputs (SDI1/SDI2) with an automatic HD/SD switching function are standard and support embedded audio. A next-generation HD Link is featured to allow high-quality connection of a wide range of digital HD products with an HDMI terminal, such as blu-ray/DVD players. Digital and analogue DVI-I (Single Link) input is also provided.

Its RS-485 Serial Remote permits up to 32 monitors to be connected in a loop-through configuration, each of which can be designated and controlled by a distinct ID number. TSL commands allow text display (8 alphanumeric characters) and tally indication. The monitor also supports unique Panasonic commands (equivalent to RS-232C).

Features include: 

1,366 x 768 (WXGA)

Eco friendly with a LED backlight

HD/SD-SDI x 2 w/ switched output 


Pixel to Pixel Mapping 

Mono mode

RGB-WFM Vector scope 

Colour audio level meter 

RS-485 IMD remote 

Worldwide 59.94 Hz /50Hz compatibility 

Two-channel analogue audio (pin jacks x2) 

Embedded audio via the SDI and HDMI input 

Audio monitoring via built-in speakers and headphone output 

Markers and Blue-only display 

H/V delay display

Various  colour adjustments

Customizable function keys 

Calibration hardware interface for chroma and luma

GPI remote control terminal 

Cine-gamma Film-Rec compensation function

Standard tilt stand, tally lamps, and Key Lock function 

Standard screw holes for mounting 

Quiet operation (No cooling fan)

Integrated power supply 

Operates on AC or DC power 




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Power Supply: 

AC 100V - 240V, 50Hz/60 Hz/DC 12V (11V-17V)

Power Consumption: 

AC 0.30A - 0.15A/DC 1.8A

Operating Temperature: 

5°C to 35°C

Operating Humidity: 

20% to 80 % (no condensation)

Storage Temperature: 

-20 °C to 60 °C


Approx. 7.0Kg (including tilt stand),
Approx. 5.6Kg (monitor only not including tilt stand)

Dimensions: (W x H x D): 

479mm x 390.7mm x 240mm (including tilt stand)
479mm x 339mm x 76.5mm (monitor only not including tilt stand)

Panel Size: 

47 cm (18.5 inches) (Effective display area)

Aspect Ratio: 



1,366 pixels x 768 pixels (WxGA)

Display  colours: 

Approx. 16,770,000  colours

View Angle: 

170° horizontal, 160° vertical (contrast > 10:1)

Video Input: 

1 input, BNC x 1

SDI Input: 

2 inputs, BNC x 2
SMPTE274/296M/259M-C/ITU-R BT.656-4 standard
Embedded Audio supported
HD SDI: SMPTE299M standard, 48 kHz, synchronous, 8 CH
SD SDI: SMPTE272M standard, 48 kHz, synchronous, 4 CH

HDMI Input: 

1 line, HDMI x 1 (Type A terminal) , HDCP supported, Embedded Audio supported, VIERA Link not supported

DVI-I Input: 

1 input (single link)

Audio input: 

RCA x 2 (stereo)

Input Signal Level: 

0.31 Vrms

Video Output: 

1 line, BNC x 1 (through-out)

SDI Output: 

1 line, BNC x 1 (switched out)


1 line, D-SUB, 9 pins x 1


1 line, D-SUB, 9 pins x 1


1 line, RJ-45 x 2 (input, output)


Stereo mini jack M3 x 1, 32 Ω, level adjustable

Speaker Output: 

Monaural 0.5 W

Tally Output (Display): 

Red , Green, Amber



Where to Buy

  • A2Z Technologies Ltd.


    29 Sale St
    Freemans Bay


  • DVT

    400B Great North Road
    Grey Lynn

    Ph 09 525 0788
    Fax 09 579 6029
    Email sales@dvt.co.nz


  • Protel

    76 Paul Matthews Rd. Albany
    Phone: +64 9 414 0477
    Fax: +64 9 414 3117
    Email: akld@protel.co.nz
    Freephone: 0800 PROTEL

    15 Walter Street
    Phone: +64 4 801 9494
    Fax: +64 4 384 2112
    Email: wgtn@protel.co.nz
    Freephone: 0800 PROTEL

  • Rubber Monkey

    Level 1
    80 Adelaide Road
    Wellington 6021
    Ph: (04) 385 8405

  • Gencom Technology


    7 Airborne Rd
    Email: info@gencom.com