PTN MHD3232 User manual

HDMI Matrix Switcher 32x32
PTN Electronics Limited www.PTN-electronics.com
MHD3232
PTN HDMI Matrix Switcher 32x32
USER MANUAL
Version: MHD32322013V1.3

HDMI Matrix Switcher 32x32
PTN Electronics Limited www.PTN-electronics.com
NOTICE: Please read this user manual carefully before using this product.
Update History
Version
Date
Update Content
1.0
2012.12.20
First Version.
1.1
2012.12.26
Updated the pictures of MHD3232 and the
introductions of the product.
1.2
2013.03.28
Updated the operation order of the buttons.
1.3
2013.05.24
Modified the system diagram.
This manual is for operation instruction only, not for any maintenance usage. The
functions described in this version are updated till May 2013. 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 2013-05-24.

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Table of Contents
1. Introduction ...............................................................................................................1
1.1. About HDMI Matrix Switcher System.............................................................1
1.2. Package Contents..........................................................................................1
2. Features....................................................................................................................1
3. Specification..............................................................................................................2
4. Operation of the Control Panel and the IR Remote...................................................3
4.1. Operation of the Control Panel ......................................................................3
4.2. Usage of the IR Remote ................................................................................4
5. External Connection..................................................................................................5
5.1. Introduction of the Input and Output Connectors...........................................5
5.2. How to Connect with the Input and Output Terminals....................................6
5.3. Connection of RS232 Communication Port ...................................................6
5.4. Connection with Control System....................................................................6
5.5. Connection with Computer.............................................................................7
6. System Diagram........................................................................................................7
7. Operation of the EDID management.........................................................................8
7.1. EDID automatically shake hand.....................................................................8
7.2. EDID management of MHD matrix.................................................................9
8. Communication Protocol and Command Codes .......................................................9
9. Safety Operation Guide...........................................................................................12
10.Troubleshooting & Maintenance..............................................................................13
11. After-sales Service..................................................................................................14

HDMI Matrix Switcher 32x32
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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.
1.2. Package Contents
1 x MHD3232
1 x Power cord
1 x IR remote
4 x Plastic cushions
1 x RS232 cable
1 x User manual
2. Features
HDMI 1.4a, support 3D.
HDTV compatible with High Definition Transmission resolution up to
1920*1200@60Hz.
HDCP compliant and DVI compatible, supporting DVI1.0.
Powerful EDID management.
Three ways for system controlling: RS232, IR remote and the front panel.
RS232 serial control port, easy for serial commands and third-part control.
Optional TCP/IP control (works with PTNET).
Front panel security lock to avoid unauthorized use when the matrix is installed in an
unsecured environment.
With the gain compensation technique and the synchronous signal correction
technology, switching speed is less than 200ns (Max).
With LEDs indicate the real-time running state.
Internal international power supply (100Volt~240Volt AC, 50/60Hz) for worldwide
compatibility.

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3. Specification
Video Input
Video Output
Input
32 HDMI
Output
32 HDMI
Input
Connector
Female HDMI
Output
Connector
Female HDMI
Input Level
T.M.D.S. 2.9V/3.3V
Output Level
T.M.D.S.
2.9V/3.3V
Input
Impedance
75Ω
Output
Impedance
75Ω
Video General
Gain
0 dB
Bandwidth
6.75 Gbit/s
Video Signal
HDMI (or T.M.D.S)
Maximum
Pixel Clock
165MHz
Resolution
Range
Up to 1920 x 1200
or 1080P@60Hz
Switching
Speed
200ns (Max.)
CEC
Supports CEC wired infrared data pass-through using the
HDMI 1.4a standard
EDID and
DDC
Management
Supports Extended Display Identification Data (EDID) and
Display Data Channel (DDC) data using HDMI/DVI standards,
EDID and DDC signals are actively buffered.
HDCP
Management
Compliant with HDCP using DVI and HDMI 1.4a standards.
The built-in HDCP management technology can analyze
HDCP key, and realize the handshake internally.
Audio General
Digital Audio
Supports HDMI audio transmitted through the RGB and Y, Cr,
Cb lines, actively buffered
Control Parts
Serial
Control Port
RS232, 9-pin
female D connector
Pin
Configurations
2 = TX, 3 = RX, 5
= GND
IR Remote
Default IR remote
Front Panel
Control
Buttons
Options
TCP/IP control by PTNET(PTN's programmable interface)
General
Power
Supply
100VAC ~ 240VAC,
50/60Hz
Power
Consumption
200W
Temperature
-20 ~ +70℃
Humidity
10% ~ 90%
Case
Dimension
W483 x H219 x
D235mm (5U high,
full rack wide)
Product
Weight
10Kg

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4. Operation of the Control Panel and the IR Remote
4.1. Operation of the Control Panel
①Power indicator ②Input Channel ③Output Channel ④Function Buttons
F4-1 Front panel
Description of the Buttons:
Buttons
Function Description
INPUTS
Input buttons, ranging from "0" to "9", 32 channels in total.
OUTPUTS
Output buttons, ranging from "0" to "9", 32 channels in total.
AV
AV synchronal button: To transfer video and audio signal
synchronously by the switcher.
Operation: Press buttons in this order “3”, “AV”, “4”.
,
Division button: to divide the output channels when switching to
more than one channel.
Example: To transfer input 1 to output 1,8,15, you need to press
this button between each two output channels.
ENTER
Confirmation button: Confirm the switching operation. The
operation will not be executed by the matrix without confirmation.
ALL
All button: To transfer an input channel to all output channels.
Example1: To transfer video and audio signals from input
channel No.12 to all output channels
Operation: Press buttons in this order “12”, “ALL”
Example2: To transfer all input signals to the corresponding
output channels respectively. In another word, to switch to this
status: 1->1, 2->2, 3->3, 4->4…32->32
Operation: Press buttons in this order “ALL”, “THROUGH”
THROUGH
Through button: To transfer the signals directly to the

HDMI Matrix Switcher 32x32
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corresponding output channels
Example: To transfer the signals from input channel No. 3 to their
corresponding output channels
Operation: Press buttons in this order “3”, “THROUGH”
UNDO
Undo button: To resume to the status before the command just
performed
Backspace button: To backspace the latest input button.
Switching Operation:
With the front control panel, the switcher could be control directly and rapidly by
pressing the buttons under below format.
“Input Channel”+”Switch Mode”+”Output Channel”+”Enter”
1) “Switch Mode”: “AV”.
2) “Input Channel”: Fill with the number of input channel to be controlled.
3) “Output Channel”: Fill with the number of output channels to be control.
4) The input/output channels on the rear panel are counting from left to right, top to
bottom. If the input/output channel is two digits number, the input delay time between
two numbers must less than 5 seconds; otherwise the operation will be cancelled.
4.2. Usage of the IR Remote
With the infrared IR remote, the matrix switcher could be control remotely. As the
function buttons on the IR remote are the same with the ones on the front control panel,
the IR remote shares the same operations and commands with the control panel.
Please press the buttons in this order: Input channel -> Menu -> Output Channel

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F4-2 Panel of the IR Remote
5. External Connection
5.1. Introduction of the Input and Output Connectors
①②③④
F5-1 Rear panel
The outputs
channels, from
0~9, and plusing
“10+” for more.
The inputs
channels, from
0~9, and plusing
“10+” for more.
Menu, for
switching source
and function

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Detailed description:
No.
Name
Description
①
HDMI INPUTS
HDMI-I connector.
②
HDMI OUTPUTS
HDMI-I connector.
③
RS232
The serial port, 9-pin female connector.
④
AC100V~240V
Alternating current for power supply.
5.2. 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.
F5-2 HDMI connector
Table 5-1 HDMI pin function
Number
Signal Name
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
5.3. Connection of RS232 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 RS232 communication port.
5.4. Connection with Control System
With the RS232 port, the HDMI matrix switchers can be control by several kinds of
control systems. This RS232 communication port is a female 9-pin D connector. The
definition of its pins is as the table below.

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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
F5-3 9HDF
5.5. 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.
F5-4 MHD connecting to computer
6. System Diagram
In MHD switcher series, the numbers of the input/output ports are based on the product
bought by the users. For example, MHD3232 has 32 input ports and 32 output ports,
numbered from 1~ 32. According to different occasions, users can connect it to different
source signal (computer signal, AV signal etc.) devices, such as DVD player, desktop
computer, graphic workstation, digital stage etc. And connect the output ports to a
projector, a video recorder, a displayer or an amplifier. The system diagram of MHD3232
is showed as below.