Marshall Amplification ML-454 User manual

Broadcast A/V Division
ML-454
Quad 4.5” Rack Mount Monitor with
3G-SDI, HDMI and Composite Inputs
User Manual

ML-454 Manual
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Table of Contents
2. Unpacking
3. Installation
4. Basic Operation
5. Menu Functions
6. Specifications
Warranty
1. Overview
02
02
04
06
09
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02
1. OVERVIEW
The ML-454 provides four independent wide-screen displays in only 2RU rack height and very slim
1.4”(35.8 mm) depth. Each display has inputs for 3GSDI, HDMI and standard composite (CVBS)
analog video sources. The SDI digital inputs provide active loop-through connections while the
composite input is self-terminating with passive loop-through.
Controls are conveniently placed on the front panel (computer not required). Menus are straight-
forward and intuitive. Front panel headphone jacks allow monitoring of embedded digital audio
(SDI and HDMI) as well as analog audio (for composite video AV input). On-screen three-color tally
borders operate from standard GPI connections (contact closure or open-collector pull-down) for
maximum compatibility with existing systems.
2. UNPACKING
Carefully unpack the ML-454 monitor and verify the following items are included:
1. ML-454 Monitor
2. 12 Volt Power supply with AC cord. ML-454PS
Inspect the unit for any physical damage that may have occurred during shipping. Should there be
any damage, immediately contact Marshall Electronics at [phone]. If you are not located
within the continental United States, call [phone].
3. INSTALLATION
The ML-454 is designed to mount in a standard 19”equipment rack using the pre-installed mounting
ears. Once mounted, the monitor may be tilted to the ideal viewing position. Care should be taken
to allow sufficient slack in cables attached to the monitor so as not to bind when the monitor is
tilted. Also, check that the ventilation holes are not obstructed by other equipment in the rack.

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CONNECTIONS, POWER AND INITIAL SETUP
Note: Each screen has its own individual complement of video input connections.
Power and TALLY connections go to all screens
1. Power Connector
Connect the 12V DC input to the power input connector. Power can be supplied from the included
power supply, or from a variety of DC sources supplying at least 4.0 Amps at 12 Volts. (Average
power consumption 2.0 Amps at 12 Volts)
2. TALLY Connector
The tally light above each monitor is controlled by grounding the appropriate pin on the Tally
connector as shown in the table. Caution: External power should never be applied to the Tally
connector. (The Tally connector has the same “footprint” as a VGA connector.)
Plug the included power supply into an AC power source (100 – 240 Volts @ 50/60 Hz). Attach the
power connector to the back of the monitor.
Connect the required cables for video signal input and output.
The monitor defaults to “ON” when power is connected. The Marshall name will first appear then
the video will be automatically detected and displayed on the screen. If the video does not appear,
press the INPUT button on the front panel to select an active source. SDI and CVBS inputs have
active loop through connections. Active loop-through does not work if main power is removed from
the monitor. Front power buttons have no effect on loop-through operation.
4. BASIC OPERATION
When main power is first applied to the ML-454, the input selection defaults to the last used
source. To see other sources, press the Input button to cycle through three choices: HDMI, SDI and
AV (CVBS composite analog).
Headphone audio level may be quickly adjusted any time by pressing the and buttons.
The power button for each screen is located just above the headphone jack. The button lights up
green when the screen is ON.
To confirm that main power is being supplied to the internal components, a red LED light for each
screen is visible through the ventilation holes on top.
Tally Green Light Red Light Yellow Light
Screen #1 123
Screen #2 678
Screen #3 11 12 13
Screen #4 510 15
GND 4, 9, 14

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FRONT PANEL CONTROLS 5. MENU FUNCTIONS
When the Menu button is pressed, a screen similar to this picture appears showing five Main Menu
categories.
Use the arrow buttons to move to the desired category.
1. Video
Adjust appearance: chroma saturation, brightness, etc.
Pic. Mode: Select between three Presets and User setting.
Standard: Settings are in their mid-range. Dynamic: Contrast is boosted.
Mild: Contrast and Saturation are reduced.
User: Brightness, Contrast, Saturation and Sharpness can be adjusted individually.
Color Temp: Select 6500, 9300 or User.
6500: Display white balance approximates 6500K (standard). 9300: Display white balance
approximates 9300K (cool).
User: Red, Green and Blue gains may be adjusted to achieve the desired white balance.
Tint: Used to correct issues with composite video sources. All colors are affected. Tint is generally
not applicable to digital video sources.
– Headphone Jack
INPUT – Select HDMI, SDI, AV sources
– Headphone Volume and Menu navigation
MENU – Open / Back / Close the main menu window
– Menu Navigation
F1 & F2 – Turn User Programmed Function On/Off
– Power On/Off

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2. Function
Select On-screen markers, aspect ratio, image flip, peaking filter and other assistance tools.
Center Marker: Places a cross marker in the exact center of the image.
Safety Marker: Creates a border to indicate a safe area for camera framing
Adjustable from 80% to 96% and 2.35 wide aspect.
Marker Color: Select the high contrast marker color according to different image. Color choices are:
Red, Green, Blue, Black and White.
Check Field: Use the to display a single primary color or no color (monochrome).
Peaking Filter: This is a tool to assist setting sharp focus on a video camera. When this mode is
ON, the picture will be monochrome with a red border around objects in the image. As the camera
lens is adjusted, the red border will be brighter or dimmer. Brighter = sharper focus.
Aspect Ratio: Select the displayed aspect ratio to fit the source.
Full Screen: Picture is fit to just meet the edges of the display area.
Pixel to Pixel: Image pixels are mapped 1:1 to display pixels. (Scaling off). In most cases, this
will have the appearance of expanding the image.
4:3: Video is fit into a 4:3 window. This is a common setting for Standard Definition video.
16:9: Video is fit into a 16:9 window. This is the standard aspect ratio for HD video.
Zoom 1: Picture is enlarged and cropped a small amount.
Zoom 2: Picture is enlarged and cropped twice as much as Zoom 1.
Image Flip: Flip the displayed image to compensate for special lenses or mirrors.
Use the buttons to choose:
H_V Flip: Combines H Flip and V Flip modes
H Flip: Image is flipped left to right (mirror).
V Flip: Image is flipped top to bottom.
Image Freeze: Holds the current image on screen until Freeze is turned off.
Zoom All: Expands the picture on the screen in all directions by tapping the button Default
setting is“0”.
U/D Zoom: Expands the picture on screen vertically using the buttons.
L/R Zoom: Expands the picture on the screen horizontally using the buttons.
Scan Mode: Adjustable items are Standard & OverScan.
Overscan: allows checking the picture out to the edges.
3. OSD
On-Screen Display functions (menu position, etc.)
OSD Horizontal Position: Adjust horizontal position of Menus
OSD Vertical Position: Adjust vertical position of Menus
OSD Menu Transparency: Adjust the menu background
OSD Timeout: Set the number of seconds menu items will remain on the screen.
Input Format OSD: Signal format/frame rate display
4. Setting
Choose menu language, factory reset and upgrade mode
Language: Select the On-screen language for menus and messages.
Backlight: Adjust the brightness of screen backlight. Compensates for ambient lighting
Factory Reset: Press the button to set the display back to its original (default) state.
USB Upgrade: Initiate firmware update from a computer attached to the USB port.
5. Function Presets
Program the user Function buttons.
User buttons allow the quick selection of a function without entering the menu system
F1 & F2: Use the and buttons to choose a function from this list:Check Field Peaking
Filter Aspect Ratio Image Flip Image Freeze Scan Mode
Center Marker
Safety Marker
Marker Color
Check Field
Peaking Filter
Aspect Ratio
Image Flip
Image Freeze
Scan Mode

20608 Madrona Avenue, Torrance, CA 90503
Tel: [phone] • Fax: [phone]
www.marshall-usa.com
[e-mail]
Marshall Electronics warranties to the first consumer that this device will, under normal use,
be free from defects in workmanship and materials, when received in its original container, for
a period of two years from the purchase date. This warranty is extended to the first consumer
only, and proof of purchase is necessary to honor the warranty. If there is no proof of purchase
provided with a warranty claim, Marshall Electronics reserves the right not to honor the warranty
set forth above. Therefore, labor and parts may be charged to the consumer. This warranty
does not apply to the product exterior or cosmetics. Misuse, abnormal handling, alterations or
modifications in design or construction void this warranty. No sales personnel of the seller or
any other person is authorized to make any warranties other than those described above, or to
extend the duration of any warranties on behalf of Marshall Electronics, beyond the time period
described above.
Due to constant effort to improve products and product features, specifications may change
without notice.
FCC Compliance Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to following two
conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
Warranty
V.1. 2
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6. SPECIFICATIONS
Panel size 4.5-inch TFT LCD
Resolution 1280 x RGB x 800
Backlight type LED, Adjustable Brightness
Dot pitch 0.07575(H) x 0.02525(W)mm
Aspect radio 16:10
Panel Bit Depth True 8-bits (not dithered)
Brightness (cd/m²) 470
Contrast 900:1
Viewing angles 80°/80°(L/R) 80°/80°(U/D)
Inputs HDMI / 3GSDI / CVBS / Audio(L/R)
Outputs 3GSDI / CVBS Loop Out
AV PAL - 4.43 / NTSC - 3.58
HDMI
480i /480p /576i /576p (59.94/50)
720p (60/59.94/50/30/29.97/25/24/23.98)
1080i (60/59.94/50)
1080p (60/59.94/50/30/29.97/25/24/23.98)
3G-SDI
ITU-R BT.656 576i
SMPTE-125M 480i
SMPTE-274M 1080i (60/59.94/50)
1080p (30/29.97/25/24/23.98)
SMPTE-296M 720p (60/59.94/50/30/29/25/24/23.98)
SMPTE-424M 1080i (60/59.94/50)
1080p (60/59.94/50)
Earphone jack Stereo 3.5mm
Input voltage DC: 10~24 V (Typical 12 V)
Power consumption 28 W (Typical)
Power Connector 5.5 mm x 2.1 mm locking coaxial
Dimensions 19.0” W x 3.3” H x 1.4” D
482.5mm W x 84mm H x 35.8mm D
Weight (main body) 3.53lbs, 1.6kg