PTN MHD88 User manual

PTN Electronics
HDMI Matrix Switchers System
(Excluding MHD44)
User Manual
MHD Series --- HDMI Matrix Switcher

HDMI Matrix Switcher
PTN Electronics Limited www.PTN-electronics.com
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Please read this manual carefully before using this product.
Notes：
This HDMI Matrix Switchers User Manual takes example of the Matrix model
MHD88.
This manual is only an instruction for operators, not for any maintenance usage.
The functions described in this version are updated till Aug 2011. 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 2011-11-1

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!
Safety Operation Guide
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:
⑴
The system must be earthed properly. Please do not use two blades plugs and ensure the alternating
power supply ranged from 100v to 240v and from 50Hz to 60Hz.
⑵
Do not put the switcher in a place of too hot or too cold.
⑶
As the power generating heat when running, the working environment should be maintained
fine ventilation, in case of damage caused by overheat.
⑷
Please cut off the general power switch in humid weather or left unused for long time.
⑸
Before following operation, ensure that the alternating current wire is pull out of the power
supply：
A．Take off or reship any components of the equipment.
B．Take off or rejoin any pin or other link of the equipment.
⑹
As to non-professional or without permission, please DO NOT try to open the casing of the
equipment, DO NOTrepair it on your own, in case of accident or increasing the damage of the
equipment.
⑺
DO NOT splash any chemistry substance or liquid in the equipment or around.

HDMI Matrix Switcher
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Contents
1. Introduction............................................................................................................................. 1
1.1 About HDMI Matrix Switcher System .........................................................................................1
1.2 HDMI Matrix Switcher Models.....................................................................................................1
2. MHD Packing of the Product............................................................................................... 2
3. MHD Installation ..................................................................................................................... 2
4. Front View and Rear View of the Product........................................................................ 2
4.1 Front view of MHD88.....................................................................................................................2
4.2 Rear view of MHD88 ......................................................................................................................3
4.3 Front view of MHD1616.................................................................................................................3
4.4 Rear view of MHD1616 ..................................................................................................................3
5. External Connection.............................................................................................................. 3
5.1 Introduction of the Input and Output Connectors ......................................................................3
5.2 Connection of RS-232 Communication Port................................................................................4
5.2.1 Connection with Control System.........................................................................................................4
5.2.2 Connection with Computer...................................................................................................................4
5.3 How to Connect with the Input and Output Terminals...............................................................4
6. Operation of the EDID management................................................................................. 6
6.1 EDID automatically shake hand..................................................................................................6
6.2 EDID management of MHD matrix..............................................................................................7
7. Operation of the Control Panel........................................................................................... 8
7.1 Front Panel Description.......................................................................................................................8
7.2 Command Format of the Switching Operation.................................................................................9
7.3 Examples of Operation...................................................................................................................9
8. Usage of the Remote Controller......................................................................................... 10
9. Communication Protocol and Command Codes..........................................................11
10. Specification...................................................................................................................... 14
11. Troubleshooting & Maintenance.................................................................................. 15

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1.Introduction
1.1 About HDMI Matrix Switcher System
MHD series Matrix switcher is a high-performance digital signal switcher that can be used for
cross switching of multi computer and audio signal. Independent HDMI component and I/O
terminals make each component signal transmit and switch separately; this design can reduce
attenuation of signal transmission to minimum and output the image and audio signal in
high-fidelity quality.
MHD series switcher mostly apply in broadcasting TV engineering, multi-media meeting room, big
screen display engineering, television education, command control center and other fields. With
RS232 interface, it can be worked with PC, remote control system and any other far-end control
system devices. The user manual takes MHD88 as example, other models can take reference
from it too.
1-1 MDH88 front view
1.2 HDMI Matrix Switcher Models
According to different situation and users, the HDMI series can be classified into the following models:
Specification
Model
Video Inputs
Video Outputs
Audio Inputs
Audio Outputs
RS232
MHD88
8
8
x
x
√
MHD1616
16
16
x
x
√
MHD3232
32
32
x
x
√
MHD6464
64
64
x
x
√
MHD9696
96
96
x
x
√
MHD128128
128
128
x
x
√
MHD144144
144
144
x
x
√

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2.MHD Packing of the Product
HDMI Matrix Switcher
IR remote
RS-232 Communication Cord
Power Supply Cord
CD
User Manual and Quality Guarantee
3.MHD Installation
MHD matrix switchers adopt metal shell and can be stacked with other device. Moreover, they are
rack-mountable enclosure and can be installed in the standard 19 inches rack.
4.Front View and Rear View of the Product
4.1Front view of MHD88

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4.2Rear view of MHD88
4.3Front view of MHD1616
4.4Rear view of MHD1616
5.External Connection
5.1 Introduction of the Input and Output Connectors
According to different type of matrix, computer signal I/O interface are made up of 4-channel

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HDMI ports and DVI-D female ports respectively (digital audio included). Please refer to shell
silk-screen figure about other types of interface.
5.2 Connection of RS-232 Communication Port
Except the front control panel, the HDMI matrix switcher can be control by far-end control system
through the Ethernet control via the RS-232 communication port.
5.2.1 Connection with Control System
With the RS-232 port, the HDMI matrix switchers can be control by several kinds of control
systems. This RS-232 communication port is a female 9-pin D connector. The
definition of its pins is as the table below.
No. Pin Function
1 N/u Unused
2 Tx Transmit
3 Rx Receive
4 N/u Unused
5 Gnd Ground
6 N/u Unused
7 N/u Unused
8 N/u Unused
9 N/u Unused
F 5-1 9HDF
5.2.2 Connection with Computer
When the switcher connects to the COM1 or COM2 of the computer with control software, users
can control it by that computer.
To control the switcher, users may use the public COM software. Please refer the details in
Communication Protocol and Command Codes
F 5-2 MHD connecting to computer
5.3 How to Connect with the Input and Output Terminals
The HDMI matrix switchers may take DVD players, computers, graphic workstations and digital
showing platform as their input signal source, and projectors, video recorders, displayers and
amplifiers as their output signal destinations according to different situation.

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F5—3HDMI connector
HDMI pin function
Pin
Number
Signal Name
Pin
Number
Signal Name
1
TMDS Data 2+
20
SHELL
2
TMDS Data 2 Shield
19
Hot Plug Detect
3
TMDS Data 2-
18
+5V Power
4
TMDS Data 1+
17
Ground
5
TMDS Data 1 Shield
16
DDC Data
6
TMDS Data 1-
15
DDC Clock
7
TMDS Data 0+
14
No Connect
8
TMDS Data 0 Shield
13
CEC
9
TMDS Data 0-
12
TMDS Clock-
10
TMDS Clock+
11
TMDS Clock Shield

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System Diagram：
F5-4 HDMI matrix system connection
6.Operation of the EDID management
MHD matrix switcher is built in the EDID management database. The EDID management can be
automatically shake hand, or manual exchanged, and factory restore.
6.1 EDID automatically shake hand
The MHD matrix switcher is built in the EDID data, which can communicate with the displayers and
video source automatically. When the displayers or video sources are connected to the MHD matrix
switcher, they will share the EDID/DDC information with the matrix switcher.
We take a MHD88 as example. The communication solution is like this: