Marshall Amplification ML-503 User manual

Broadcast A/V Division
Triple 5” 2RU Rack Mount Monitor
ML-503
Operating Instructions

2
Table of Contents
1. Product Description........................................................................................ 3
2. Menu Settings ................................................................................................. 6
3. Specifications................................................................................................ 11
4. Included Accessories ................................................................................... 11
5. Troubleshooting ............................................................................................ 11
6. PCSet Remote Terminal Application........................................................... 12
7. WARRANTY .................................................................................................... 12
Table of Contents
IMPORTANT SAFETY INSTRUCTIONS:
• Please read Operating Instructions (this manual) before using the product.
• Keep the manual for future reference.
• Read the cautions below to prevent possible component failure or degradation.
CAUTIONS:
• To avoid scratching the LCD surface, do NOT place the monitor on its face
• Avoid heavy impact.
• Do NOT use chemical solutions to clean this product. Simply wipe with a clean, soft cloth to
maintain the brightness of the surface.
• Do NOT block vent holes. Be aware of mounting heat-producing equipment below this product.
• Use the following instructions and trouble-shooting section in the manual to adjust the product.
Internal adjustments or repairs must be performed only by Marshall Electronics.

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ML-503 / Product Description
Front Panel Features
1. Rackmount ears with tilt capability. Tilt monitor for best visibility or
improved ventilation.
2. Headphone jack. Accepts standard 3.5mm stereo mini-phone plug.
3. Menu key: Opens / Closes menu system
4. “” key: Selects menu options
When the menu system is not open, the down arrow key lowers the
headphone volume
5. “” key: Selects options
When the menu system is not open, the up arrow increases the
headphone volume
6. F1 and F2 user-defined shortcut buttons.
Access the SETTING menu page to set user-defined functions.
7. INPUT select button cycles through SDI and HDMI inputs
8. POWER button (Lights red in standby mode; green when operating).
Product Description

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Product Description
Back Panel Features
1. Barrel Power Connector
12V DC power input 5.5mm x 2.1mm barrel connector.
Plug the supplied DC power adapter here. (Center pin is +)
Important: Please connect only one type of power supply at
a time to this monitor.
2. 4-pin Power Connector
4-pin XLR DC power input compatible with typical broadcast television camera
12-volt power supplies. CAUTION: Some 4-pin power supplies provide 24 volts.
These are NOT compatible with this monitor. Please check the label on the power
supply before connecting.
3. Ventilation Fan
The fan will run automatically as needed to dissipate heat. The fan
speed can also be adjusted manually in the SETTING menu page.

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ML-503 / Product Description
4, 7, 9. Serial Digital “BNC” Connectors
SDI input and non-reclocking loop out. Compatible with SD-SDI, HD-SDI
and 3G-SDI inputs. Embedded audio may be monitored at the Headphone
jack and visually monitored on-screen.
5, 8, 10. HDMI Digital Video Connectors
HDMI input and loop out. Embedded audio may be monitored at the
Headphone jack and visually monitored on-screen.
6. USB Service Ports
USB input - Used for firmware updates and Lookup Table “LUT” loading.
11. Ethernet LAN RJ-45 Connector
LAN port. The monitor can be operated from a Windows™ computer using the
PCSet Terminal application available from the Marshall Electronics website.
12. TALLY Connector
A red, green, or yellow on-screen tally bar can be made to ap-
pear by grounding the appropriate pin on the Tally connector as
shown in the table. It is compatible with “open collector” and
“pull down” type GPI controls. CAUTION: External power should never be applied to
the Tally connector.

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Menu Settings
Press the MENU key on the monitor and function menus will pop-up on the screen.
Click “” or “” key to select an option. Then press the menu key again to open
the sub-menu. When an arrow pointer appears in the menu, click “” or “” key
again to access the item. Press the menu key to confirm a selection.
1. PICTURE
This page provides controls for typical picture adjustments.
Brightness – used to establish the correct black level in the picture. Default value is 50.
Contrast – establishes the range of dark to light areas in the picture. Default value is 50.
Saturation – sets the amount of color information in the picture. Default value is 50.
Sharpness – adds synthetic “detail” to the image. HD images should require very little
added sharpness. Default value is 0.
Color Temp – this setting provides three different presets for white balance approxi-
mating different common color “temperatures”. USER allows for custom calibration by
adjusting Gains and Offsets as desired:
R/G/B Gain – Adjust the R/G/B Gain of the current Color Temperature from 0 to 255.
Default value is 128.
R/G/B Offset – Adjust the R/G/B Offset of the current Color Temperature from 0 to 511.
Default value is 256.

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ML-503 / Menu Settings
2. MARKER
This page offers controls for setting
various on-screen markers.
Center Marker – places a “+” mark in the exact center of the display.
(Useful for checking camera or graphics positioning.)
Aspect Marker – places borders on screen representing various typical video and
cinema aspect ratios. This does not change the displayed aspect ratio. (That setting is in
the Video menu.)
Safety Marker – places a border around the edge of the screen to be used as a guide
during video production.
Marker Color – the Center, Aspect and Screen marker colors can be changed here
Grid – On-screen grid lines are useful when matching camera shots or during editing.
When Grid is turned on, Center, Aspect and Safety markers will not appear.
Aspect Mat – darkens the background behind the markers for visibility
Thickness – sets the width of the markers. Adjust as desired for best visibility

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Menu Settings
3. VIDEO
This page offers controls for setting
various on-screen markers.
Scan – Selects various display methods. When Aspect is selected, the item below this
one can adjust the aspect ratio of the displayed image.
Aspect – Allows changing the aspect ratio (shape) of the picture to match the
incoming video. Settings are available for various video and cinema styles.
Pix-to-pix – displays the incoming video with a 1:1 pixel match. This provides the
clearest resolution but usually changes the size of the image. This turns off up/down
“scaling”. For example: a video input that has fewer pixels than the LCD display will
appear to shrink while a video input that has more pixels will appear to expand. This
can be useful to determine where artifacts are occurring by eliminating monitor scal-
ing. When this mode is on, Aspect, Display Scan, Zoom and Markers will be off.
Zoom – expands the picture digitally. It is normal for picture quality to become less
sharp as the picture is expanded. When this mode is on, Aspect, Display Scan and
Markers will be off.
Display Scan – Provides additional methods for viewing images
Full scan – Uses all pixels available in the display. This may not match the aspect ratio
of the incoming signal.
Overscan – enlarge the image slightly to conceal image edges.
Underscan – shrinks the image slightly to allow viewing image edges
Check Field – displays the picture in monochrome (black & white) or in individual prima-
ry colors. Useful for color analysis and trouble shooting.
Freeze – holds the current picture on screen.
Image Flip – the picture can be reversed top to bottom, left to right or both. This can be
a useful tool when viewing images shot through mirrors or from cameras mounted up-
side-down.

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ML-503 / Menu Settings
4. CAMERA AUX
Peaking - adds a colored edge to picture details making it easy to identify which areas
are in sharpest focus.
This is a useful tool to use during camera lens adjustments.
Peaking color – Peaking colors may be changed as needed for best visibility. Available
colors: red, green, blue, white, black. The default color is red.
Peaking level - Use this setting to adjust amount of edge peaking to suit user prefer-
ence. Default level is 50.
This page offers settings to assist
with camera focus.
5. AUDIO
Volume – controls the Headphone volume. Headphone volume can also be adjusted
easily by using the up/down arrow keys when the menus are not on screen. Default
volume setting is 50.
Audio channel – With SDI input, channel pairs may be selected from 1-16. With HDMI
input, Channels 1&2 will be used.
Level Meter – shows an on-screen bar graph of two audio channels (typically Left and
Right) from either an HDMI or SDI digital source.
Mute – Disables the headphone audio output when turned ON.
This Page is used to adjust volume, audio
channel selection, on-screen level meter and
headphone mute.

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Menu Settings
6. SETTING The Setting page provides a collection of system-level functions
including On Screen Display (OSD), backlight, Ethernet port settings
(IP Config), short cut keys (F1/F2), and Factory Reset.
Language – sets on-screen messages to either English or Chinese.
OSD Timer – Adjusts the amount of time menus remain on screen.
Back light – Adjusts the brightness of the LCD backlight. This is different from the
“Brightness” control. Backlight is adjusted to compensate for room lighting without
upsetting Contrast and Brightness adjustments. It is generally best practice to set the
Back Light level before changing other picture settings.
DHCP – Enable or disable DHCP. When DHCP is on, the monitor will automatically get
an IP address from the network. The address will appear in the IP, Mask and Gateway
fields below. When DHCP is off, a Static address may be created manually using the menu
knob and arrow keys.
IP – Configures or displays IP address
Mask – Configures or displays Subnet Mask
Gateway – Configures or displays Gateway
F1 Conf. – Configuration for short cut key F1.
Default is Peaking.
F2 Conf. – Configuration for short cut key F2.
Default is Level Meter.
Fan – Adjust the speed of the fan inside the monitor.
Reset – Sets all menu items back to the way the unit ships from the factory.

ML-503 Manual
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Specifications
Included Accessories
Troubleshooting
• DC 12V 3A Universal 120/240 VAC 50/60 Hz Power adapter
with 5.5mm x 2.1mm push connector
• TALLY kit – Adapts 15-pin Tally connector to solderless terminal block
1. Power on but no picture:
Check whether the cables are correctly connected. Also, please use the standard power
adapter coming with the product package or other power supply with the correct volt-
age and pin configuration.
2. Only black-and-white display:
Check whether the color saturation and brightness are properly set.
Access the Video menu and make sure Check Field is OFF.
3. Wrong or abnormal colors:
Check whether the cables are correctly connected. Broken or loose pins of HDMI the
cables may cause a bad connection. Access the Camera AUX menu page. Check that
Peaking is off.
4. Picture is “stuck” on screen:
Access the Video menu page and check that IMAGE FREEZE is off.
5. Solving Other problems:
The monitor can be reset to Factory original settings. This is sometimes useful to elimi-
nate the possibility that an improperly set menu item is interfering with the operation. To
reset the monitor, access the “SETTING” menu page, press the Menu key then press
the “” and “” key to select “Reset”. Press the menu key to cause the unit to reset.

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PCSet Remote Terminal Application
PCSet Remote Terminal is a convenient software tool for controlling multiple monitors
from a single computer. PCSet will run on any Windows™ based computer (XP or later)
and installs quickly by creating a desktop icon. Simply double-click the desktop icon
and the control screen will appear. PCSet discovers the monitors on the network and
adapts the control function display accordingly. Currently works with models ML-503,
ML-702, V-702, V-702-12G.
Download the PCSet Remote Terminal Application with instructions here:
https://marshall-usa.com/software/PCSet-Remote-Terminal.zip
WARRANTY
Marshall Electronics warranties to the first consumer that this ML-503, Triple 5” Rack-
mount monitor will, under normal use, be free from defects in workmanship and mate-
rials, when received in its original container, for a period of one year from the purchase
date. This warranty is extended to the first consumer only, and proof of purchase is nec-
essary 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 warran-
ties other than those described above, or to extend the duration of any warranties on
behalf of Marshall Electronics, beyond the time period described above.
Note: Due to constant effort to improve products and product features, specifications
may change without prior notice.
Marshall Electronics, Inc.
20608 Madrona Avenue, Torrance, CA 90503
Tel: [phone] / Fax: [phone]
www.marshall-usa.com • Email: [email protected]