User Manual
MHD44
HDMI Matrix Switcher
All Rights Reserved
Version: MHD44_2014V1.0
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HDMI 4x4 Matrix Switcher
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.
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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.
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HDMI 4x4 Matrix Switcher
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
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HDMI 4x4 Matrix Switcher
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.
①
②
Name
Firmware
Power
Indicator
Description
Micro USB port for update firmware.
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.
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.
⑤
 AV: to transfer AV and IR signal synchronously by the
switcher.
⑥
⑦
FUNCTION
BUTTONS
OUTPUTS
 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.
OUTPUT1 ~ 4 corresponds 4 HDMI output sources
separately.
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2.2 Rear Panel
No.
①
Name
GROUND
②
INPUTS
③
OUTPUTS
④
IR EYE
⑤
RS232
⑥
Power
adapting
port
Description
Connect to grounding, make the unit ground well.
4 HDMI input ports, connect with HDMI ports of signal
sources.
4 HDMI output ports, connect with HDMI ports of output
source devices.
Connect with IR receiver, use the IR remote to control
MHD44.
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.)
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
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.
Note: In-built IR or extended IR receiver connected to IR Eye can control the device with
this remote control.
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4.3 RS232 Control
4.3.1 Control MHD44 via a PC
To control MHD44, you need to connect the 9 pin female RS232 port to a PC’s RS232
port. By using RS232 control software and setting right specifications, you are able to
control MHD44.
4.3.2 PC RS232 Control Software Setting
Installation: Copy the control software file to the computer which is connected with
HDMI Matrix Switcher.
Uninstallation: Delete all the control software files in corresponding file path.
Basic Settings:
Firstly, connect the HDMI Matrix Switcher with all input source devices and output
displaying devices needed. Then connect HDMI Matrix Switcher with a computer which
is installed with RS232 control software.
Note: Please set the parameters (including COM number, baud rate, data bit, stop bit
and the parity bit) correctly, and then you are able to send commands.
4.3.3 RS232 Commands
Communication protocol: RS232 Communication Protocol
Baud rate: 9600
Command
Codes
Data bit: 8
Stop bit: 1
Parity bit: None
Feedback
Example
Functions
/*Type;
Inquire the models information.
MHD44
/%Lock;
Lock the front panel buttons on the Matrix.
System Locked!
/%Unlock;
Unlock the front panel buttons on the Matrix.
System Unlock!
/^Version;
Inquire the version of firmware
V1.X.X
/:Message
Off;
/:Message
On;
Turn off the feedback command from the com
port. It will only show the “Switch OK!”.
Turn on the feedback command from the com
port.
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/:MessageOff;
/:MessageOn;
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Command
Codes
Demo.
Undo.
[x]All.
All#.
All$.
Feedback
Example
Functions
Switch to the “demo” mode, 1->1, 2->2, 3->3 …
and so on .The switching interval is 2 seconds.
To cancel the previous operation.
Transfer signals from the input channel [x] to all
output channels
Transfer all input signals to the corresponding
output channels respectively.
Switch off all the output channels.
Demo Mode
Undo OK!
1 To All.
All Through.
All Closed.
[x]$.
Transfer signals from the input channel [x] to the
output channel [x].
Switch off the output channel [x].
[x]@.
Switch on the output channel [x].
1 Open.
All@.
Switch on all output channels.
All Open.
[x]#.
[x1] B[x2].
Status[x].
Transfer the AV signal from the input channel [x1]
to the output channel [x2].
Inquire [x] output statues.
Inquire all outputs statues one by one.
1 Through.
1 Closed.
01B02
AV:
AV:
AV:
AV:
AV:
AV:
Status.
1-> 1
1->
1->
2->
3->
4-> 4
Recall[Y].
Save the present operation to the preset
command [Y], ranges from 0 to 9.
Recall the preset command [Y].
Clear[Y].
Clear the preset command [Y].
Clear F1
PWON.
Work in normal mode.
PWON
PWOFF.
Enter into standby mode.
PWOFF
Save[Y].
/%[Y]/[X]:[
Z].
Save To F1
Recall From F1
HDCP management command. [Y] is for input
(value: I) or output (value: O). [X] is the number
of one port, if the value of X is ALL, it means all
ports. [Z] is for HDCP compliance status (value:
1 or 0, 1 stands for “with”, 0 stands for “without”).
/%I/ALL:0.
 Y=I & Z=1, means the input port is compliant
with HDCP.
 Y=O & Z=1, means output with HDCP.
 Y=I & Z=0, means the input port is not
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Command
Codes
Feedback
Example
Functions
compliant with HDCP.
 Y=O & Z=0, means output without HDCP.
%0800.
%0801.
EDIDH[x]B
[y].
DigitAudio
ON[x].
%0800.
Manual HDCP management.
Automatically HDCP management. If input is with
HDCP, so is output.
Input port [y] learns the EDID from output port [x].
If the EDID data is effective and the audio part
supports not only PCM mode, then force-set it to
PCM mode. If the EDID data is not effective, then
set it as initialized EDID data.
DigitAudio
%0801.
EDIDH01B01
DigitAudio ON with
Output 4
DigitAudio
OFF[x].
Disable HDMI audio output of port x.
 X=1, 2, 3, 4, disable this one port.
 X=5, disable all the 4 ports.
DigitAudio OFF with
Output 4
%0911.
Reset to factory default.
Factory Default
%9961.
Check the system locking status.
PWON /PWOFF
%9962.
Check the status of standby mode.
System Unlock!
%9971.
Check the connection status of the inputs.
%9972.
Check the connection status of the outputs.
%9973.
Check the HDCP status of the inputs.
%9974.
Check the HDCP status of the outputs.
%9975.
Check the switching status.
%9976.
Check the output resolution.
%9977.
Check the status of digital audio of output
channels.
%9978.
Check whether the input port is compatible with
HDCP
EDIDPCM[
x].
Set the audio part of input port [x] to PCM format
in EDID database.
EDIDG[x].
Get EDID data from the output and display the
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In
1234
Connect N N N N
Out
1234
Connect Y N N N
In
1 2 3 4
HDCP
NNNN
Out
1 2 3 4
HDCP
NNNN
Out
1 2 3 4
In
1234
Out
1 2 3 4
Audio
YYYY
In
1 2 3 4
HDCPEN
Y Y Y
Y
EDIDPCM01
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Command
Codes
Feedback
Example
Functions
output port number of X.
EDIDMInit.
EDIDMInit.
Recover the factory default EDID data.
EDIDM[X]B[ Manually EDID switching. Learn the EDID data
Y].
of output[X] to the input[Y].
EDIDM03B01
Upgrade EDID data via the RS232 port
EDIDUpgr
ade[x].
[X] is for input port, when the value of X is 5, it
means to upgrade to all input ports. When the
switcher gets the command, it will show a
message to send EDID file (.bin file). Operations
will be canceled after 10 seconds. (Note 1)
Please cut off all connections of HDBaseT ports.
Please send
EDID file
the
Please send
EDID file
the
Select one type of EDID data and upgrade built-in
EDID data. Supports 4 types of EDID data:
UpgradeIn
tEDID[x].
1. 1080P, 2D, PCM2.0
2. 1080P, 2D, 5.1 (audio)
3. 1080P, 3D, PCM2.0
4. 1080P, 3D, 5.1 (audio)
[x] = 1, 2, 3 or 4
When the switcher gets the command, it will
show a message to send EDID file (.bin file).
Operations will be canceled after 10 seconds.
EDID/[x]/[y
].
Set the built-in EDID data of input port [x] to type
[y].
The value of [y] is 1, 2, 3, and 4. The EDID data
types are same as mentioned above.
EDID/02/01
Note:
1. Please disconnect all the twisted pairs before sending command EDIDUpgrade[X].
2. In above commands, “[”and “]” are symbols for easy reading and do not need to be
typed in actual operation.
3. Please remember to end the commands with the ending symbols “.” or “;”.
4. Type the command carefully, it is case-sensitive.
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4.4 USB Firmware Updating
To meet with the request of different users or additional functions in future, the firmware
of MHD44 can be upgraded via USB. When you need to upgrade it, please download
the latest upgrade file and then you are able to upgrade it through the update EXE
software. Copy the EXE software to the PC in controlled and double click the program to
upgrade the firmware.
When the program is running normally, it will enter into the interface (as shown in next
figure), please press the button Open and choose the upgrade file downloaded, and
then press the button Updata. Then it starts to upgrade. When all are done, it will
appear with a dialog box showing the message Update success.
Note: The COM number connected with PC is available only when in 1 to 9.
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5. Specification
Video Input
Input
Input
Connector
Input Level
Input
Impedance
Video General
Gain
4 HDMI
A Type Female HDMI
T.M.D.S. 2.9V~3.3V
100Ω (Differential)
0 dB
Video Signal
HDMI (or DVI-D)
Resolution
Range
Up to 1920 x
1200@60Hz or
1080P@60Hz
Video Output
Output
Output
Connector
Output Level
Output
Impedance
Bandwidth
Maximum
Pixel Clock
Switching
Speed
4 HDMI
A Type Female HDMI
T.M.D.S. 2.9V~3.3V
100Ω (Differential)
6.75Gbit/s
225MHz
200ns (Max.)
EDID
In-built EDID data and manual EDID management
Management
HDCP
Supports HDCP 1.3, auto and manual HDCP management.
Control Parts
1 IR EYE (black)
Control Ports
Panel Control
Front panel buttons
1 RS232 (9 pin female D)
IR
Default IR remote
General
482.6 x 43.9 x
Power
Dimension
DC12V,2A
236.5mm (1U high,
Supply
(W*H*D)
full rack wide)
Temperature
-20 ~ +70℃
Humidity
10% ~ 90%
6. Panel Drawing
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7. Troubleshooting & Maintenance
Problems
Causes
Solutions
Color losing or no video
signal output in HDMI
display
The connecting cables may
not be connected correctly
or it may be broken
Check whether the cables
are connected correctly and
in working condition.
EDID management does
not work normally
the HDMI cable is broken
at the output end
Change for another HDMI
cable.
No output image when
switching
No signal at the input /
output end
Check with oscilloscope or
multimeter if there is any
signal at the output end.
Fail or loose connection
Make sure the connection is
good
The switcher is broken
Send it to authorized dealer
for repairing.
The displayer does not
support the resolution of
the video source
Switch again
No HDMI signal output in
the splitter while local
HDMI input is in normal
working state
Display device appears
with blank screen when
switching input/ output
source
Manage the EDID data
manually to make the
resolution of the video
source automatically
compliant with the output
resolution
Cannot control the
switcher by control
device (e.g. a PC)
through RS232 port
Wrong RS232
communication parameters
Make sure the RS232
communication parameters
are correct.
The device has already
been broken
Send it to authorized dealer
for repairing.
Static becomes stronger
when connecting the
bad grounding
Check the grounding and
make sure it is connected
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video connectors
Cannot be controlled
through RS232 port, front
panel buttons or by IR
remote
well.
The unit is broken
Send it to authorized dealers
for repairing
If your problem persists after following the above troubleshooting steps, seek further
help from authorized dealer or our technical support.
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8. After-sales Service
1) If there appear some problems when running MHD44, please check and deal with
the problems reference to this user manual. Any transport costs are borne by the
users during the warranty.
2) You can email to our after-sales department or make a call, please tell us the
following information about your cases.
 Product version and name.
 Detailed failure situations.
 The formation of the cases.
3) We offer products for all three-year warranty, which starts from the first day you buy
this product (The purchase invoice shall prevail).
4) Any problem is same with one of the following cases listed, we will not offer warranty
service but offer for charge.
 Beyond the warranty.
 Damage due to incorrectly usage, keeping or repairing.
 Damage due to device assembly operations by the maintenance company
non-assigned.
 No certificate or invoice as the proof of warranty.
 The product model showed on the warranty card does not match with the model
of the product for repairing or had been altered.
 Damage caused by force majeure.
Remarks: For any questions or problems, please try to get help from your local dealer,
or to email PTN at: support@PTN-electronics.com.
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PTN Electronics Limited
Tel: +86-755-2846 1819
Fax: +86-755-8471 7796
Email: info@PTN-electronics.com
Website: www.PTN-electronics.com