PTN MHD44 User manual

www.PTN-electronics.com
MHD44
HDMI Matrix Switcher
All Rights Reserved
Version: MHD44_2014V1.0
User Manual

HDMI 4x4 Matrix Switcher
PTN Electronics Limited www.PTN-electronics.com
Safety Precautions
In order to guarantee the reliable operation of the equipments and safety of the staff,
please abide by the following proceeding in installation, using and maintenance:
1) The system must be earthed properly. Do not use two blades plugs and ensure the
alternating power supply ranged from 100v to 240v and from 50Hz to 60Hz.
2) Do not put the switcher in a place of too hot or too cold.
3) As the power generating heat when running, the working environment should be
maintained fine ventilation, in case of damage caused by overheat.
4) Cut off the general power switch in humid weather or left unused for long time.
5) Before following operation, ensure that the alternating current wire is pull out of the
power supply:
Take off or reship any components of the equipment.
Take off or rejoin any pin or other link of the equipment.
6) As to non-professional or without permission, please DO NOT try to open the casing
of the equipment, DO NOT repair it on your own, in case of accident or increasing
the damage of the equipment.
7) DO NOT splash any chemistry substance or liquid in the equipment or around.

HDMI 4x4 Matrix Switcher
PTN Electronics Limited www.PTN-electronics.com
NOTICE: Please read this user manual carefully before using this product.
Pictures shown in this manual are for reference only, different model and
specifications are subject to real product.
This manual is only for operation instruction only, not for any maintenance usage.
The functions described in this version are updated till February 2014. Any
changes of functions and parameters since then will be informed separately.
Please refer to the dealers for the latest details.
This manual is copyright PTN Electronics Limited. All rights reserved. No part of
this publication may be copied or reproduced without the prior written consent of
PTN Electronics Limited.
All product function is valid till 2014-2-8.

HDMI 4x4 Matrix Switcher
PTN Electronics Limited www.PTN-electronics.com
Table of Contents
1. Introduction.................................................................................................................1
1.1 Introduction to MHD44.......................................................................................1
1.2 Features ............................................................................................................1
1.3 Package Contents.............................................................................................1
2. Product Appearance of MHD44 ..................................................................................2
2.1 Front Panel........................................................................................................2
2.2 Rear Panel.........................................................................................................3
3. System Connection.....................................................................................................3
3.1 Usage Precautions............................................................................................3
3.2 System Diagram................................................................................................4
3.3 Connection Procedure.......................................................................................4
3.4 System Applications ..........................................................................................4
4. System Operations .....................................................................................................5
4.1 Button Control....................................................................................................5
4.2 IR Control ..........................................................................................................6
4.2.1 Usage of IR Remote................................................................................6
4.3 RS232 Control...................................................................................................7
4.3.1 Control MHD44 via a PC .........................................................................7
4.3.2 PC RS232 Control Software Setting........................................................7
4.3.3 RS232 Commands..................................................................................7
4.4 USB Firmware Updating..................................................................................11
5. Specification .............................................................................................................12
6. Panel Drawing ..........................................................................................................12
7. Troubleshooting & Maintenance ...............................................................................13
8. After-sales Service....................................................................................................15

HDMI 4x4 Matrix Switcher
PTN Electronics Limited 1 www.PTN-electronics.com
1. Introduction
1.1 Introduction to MHD44
MHD44 is a high-performance digital matrix switcher for HDMI signals, including 4 HDMI
inputs, 4 HDMI outputs. It conforms to HDCP standards, supports HDMI 1.4a, and can
handle 1080P 3D signal. It can be controlled via diverse and flexible control methods
including front panel buttons, RS232 serial port and IR.
1.2 Features
Supports HDMI 1.4a, 1080P@60Hz 3D, DVI1.0 compatible
Supports 6.75Gbps bandwidth
Intelligent EDID data management
Supports online upgrade process via USB port on front panel
LCD screen shows real-time connection status, switching status, whether input/
output signal is with HDCP, and output resolution.
1.3 Package Contents
1 x MHD44
2 x Mounting ears (6 x Black Screws)
1 x RS232 cable
4 x Plastic cushions (4 x Screws)
1 x Power adapter (12V DC)
1 x IR remote
1 x IR receiver
1 x User manual
Note：Please confirm if the product and the accessories are all included, if not, please
contact with the dealers.

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2. Product Appearance of MHD44
2.1 Front Panel
No.
Name
Description
①
Firmware
Micro USB port for update firmware.
②
Power
Indicator
Keeps light when power on.
③
IR
In-built IR receiver, receives IR signals emitted by IR
remote to facilitate remote control.
④
LCD
Indicator
Real-time show for system status.
⑤
INPUTS
INPUT1 ~ 4 corresponds 4 HDMI input sources separately.
Inquire mode: press “AV” more than 3 seconds to enter this
mode to check connection status, switching status, whether
input/ output signal is with HDCP and output resolution.
Press to change different menus, to inquire
resolutions of INPUT1~4.
⑥
FUNCTION
BUTTONS
AV: to transfer AV and IR signal synchronously by the
switcher.
ALL: to transfer one input to all outputs.
EDID: manually capture and study the EDID data from
output device to input port.
Note: Make sure signal source is set up correctly and can
deliver data to display device stably.
⑦
OUTPUTS
OUTPUT1 ~ 4 corresponds 4 HDMI output sources
separately.

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2.2 Rear Panel
No.
Name
Description
①
GROUND
Connect to grounding, make the unit ground well.
②
INPUTS
4 HDMI input ports, connect with HDMI ports of signal
sources.
③
OUTPUTS
4 HDMI output ports, connect with HDMI ports of output
source devices.
④
IR EYE
Connect with IR receiver, use the IR remote to control
MHD44.
⑤
RS232
The serial port for unit control, 9-pin female connector,
connects with control device such as a PC. (Make sure to
fill in corresponding communication protocol parameters
correctly.)
⑥
Power
adapting
port
Connect with 12V DC power adaptor. The indicator will
turn red and keep light when power on.
3. System Connection
3.1 Usage Precautions
1) System should be installed in a clean environment and has a prop temperature and
humidity.
2) All of the power switches, plugs, sockets and power cords should be insulated for
safe.
3) All devices should be connected before power on.

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3.2 System Diagram
3.3 Connection Procedure
1) Connect HDMI sources (e.g. DVD) to HDMI “INPUTS”of MHD44 with HDMI cables.
2) Connect HDMI displayers to HDMI “OUTPUTS”of MHD44 with HDMI cables.
3) Connect the RS232 port (9 pin female connector) of MHD44 to a control device with
a serial cable, and control MHD44 via the control device (e.g. a PC).
4) Connect IR receiver to the IR Eye port.
5) Connect 12V DC power adaptor to MHD44.
3.4 System Applications
With its good performance in control and transmission, MHD44 can be widely used in
computer realm, monitoring, large screen displaying, conference system, television
education and bank securities institutions etc.

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4. System Operations
4.1 Button Control
The operation examples are showed in 2.1 Front Panel. Here we make a brief
introduction to the system inquiry operations.
Keep pressing the button “AV”for 3 seconds, it will enter into system inquire menu. Use
to check the previous/next item.
Function Items
Example
Description
Check the
connection
status of inputs
Y means the corresponding port
is connected with input device, N
means not.
Check the
connection
status of outputs
Y means the corresponding port
is connected with output device,
N means not.
Correspondence
between inputs
and outputs
Shows the correspondence
between the 4 inputs and 4
outputs.
Check if the
input is with
HDCP
Y means the input signal is with
HDCP, N means not.
Check if the
output is with
HDCP
Y means the output signal is with
HDCP, N means not.
Check the
output resolution
Use to check all the 4
output resolutions.

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4.2 IR Control
4.2.1 Usage of IR Remote
Note: In-built IR or extended IR receiver connected to IR Eye can control the device with
this remote control.
Standby button, press it to enter/exit standby mode.
Input channels, range from 1~4.
Menu buttons, AV , ALL and EDID buttons have
the same functions as AV , ALL and EDID on the
front panel.
THROUGH: to transfer the signals directly to the
corresponding output channels.
Example: Press “3”, “THROUGH”, the result will
be IN 3→OUT 3. Press “ALL”, “THROUGH”, the
result will be: 1→1, 2→2, 3→3, 4→4.
Output channels, ranges from 1~4.