PTN MVG44A User manual

PTN Electronics
VGA Matrix Switchers System
User Manual
Please read this manual carefully before using this product.
MVG Series ---Computer Graphics (VGA)/Stereo Audio Matrix

Notice：
This MVG Matrix Switchers User Manual takes example of the Matrix model
MVG88A. It can be used as user’s manual of other MVG matrix switcher models.
This manual is only an instruction for operators, not for any maintenance usage.
The functions described in this version are updated till Jan 2010. 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 2010-1-1

Computer Graphics (VGA)/Stereo Audio Matrix Switcher
PTN
E
lectronics Limited
www.
PTN
-
electronics
.com
ii
!
Safety
O
peration
G
uide
In order to ensure the credibility use of the product and the user’s safety, please comply with the
following items during installation and maintenance:
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.
Do not put the switcher in a place of too hot or too cold.
To avoid any damage by over heat, please keep the working environment good in ventilation to radiate
the heat when running the switcher.
The switchers should be turned off when in rainy and humid days or nonuse for a long time,
The alternating power supply line should be disconnected with the power socket during the following
operation.
A. Take out or reinstall any component of the switcher
B. Disconnect or re-connect any connector of the switcher
Please do not attempt to maintain and uncover the switcher for there is a high-voltage component
inside and the risk of the electric shock.
Do not splash any chemical product or liquid on or near the equipment.

Computer Graphics (VGA)/Stereo Audio Matrix Switcher
PTN
E
lectronics Limited
www.
PTN
-
electronics
.com
iii
Contents
1. INTRODUCTION ................................................................................................................................... 4
1.1 A
BOUT
MVG M
ATRIX
S
WITCHER
S
YSTEM
........................................................................................ 4
1.2 MVG M
ATRIX
S
WITCHER
M
ODELS
................................................................................................... 4
2. PACKING OF THE PRODUCT ............................................................................................................. 5
3. INSTALLATION .................................................................................................................................... 5
4. FRONT VIEW OF THE PRODUCT ...................................................................................................... 6
4.1 F
RONT
V
IEW OF THE
MVG44A ........................................................................................................ 6
4.2 F
RONT
V
IEW OF THE
MVG82A、MVG84A、MVG88A ................................................................... 6
5. REAR VIEW OF THE PRODUCT ......................................................................................................... 6
5.1 R
EAR
V
IEW OF THE
VGA44A .......................................................................................................... 6
5.2 R
EAR
V
IEW OF THE
MVG82A、MVG84A、MVG88A ..................................................................... 6
6. EXTERNAL CONNECTION.................................................................................................................. 7
6.1
I
NTRODUCTION OF THE
I
NPUT AND
O
UTPUT
C
ONNECTORS
................................................................ 7
6.2 C
ONNECTION OF
RS-232 C
OMMUNICATION
P
ORT
............................................................................ 7
6.2.1 Connection with Control Systems .......................................................................................... 7
6.2.2 Connection with Computer ..................................................................................................... 7
6.3 H
OW TO
C
ONNECT WITH THE
I
NPUT AND
O
UTPUT
T
ERMINALS
........................................................... 8
6.4 H
OW TO
C
ONNECT WITH THE
MVG I/O D
EVICES
.............................................................................. 9
7. OPERATION OF THE CONTROL PANEL ........................................................................................... 9
7.1 F
RONT
P
ANEL
D
ESCRIPTION
............................................................................................................ 9
7.2
C
OMMAND
F
ORMAT OF THE
S
WITCHING
O
PERATION
....................................................................... 10
7.3 E
XAMPLES OF
O
PERATION
............................................................................................................. 10
8. USAGE OF THE REMOTE CONTROLLER ...................................................................................... 11
9. COMMUNICATION PROTOCOL AND COMMAND CODES ............................................................ 12
10. TECHNICAL SPECIFICATIONS ...................................................................................................... 14
11. SYSTEM DIAGRAM ......................................................................................................................... 15
12. TROUBLESHOOTING & MAINTENANCE ...................................................................................... 15

Computer Graphics (VGA)/Stereo Audio Matrix Switcher
4
1. Introduction
1.1 About MVG Matrix Switcher System
MVG series Matrix switcher is a high-performance professional computer and audio signal switcher that
can be used for cross switching of multi computer and audio signal.
MVG series switcher mostly apply in broadcasting TV engineering, multi-media meeting room, big
screen display engineering, television education, command control center or other fields. It provides
power-fail locale protection function, LED indicating, shortcut selecting function. With RS232 interface,
it can be worked with PC, remote control system and any other far-end control system devices. The
user manual takes MVG88 as the example; other models can take reference from it too.
F 1-1 MVG 88A
1.2 MVG Matrix Switcher Models
According to different situation and users, the MVG series can be classified into the following models:
Specifications
Models
Video Inputs Video
Outputs
RS232
Interface Audio I/O
MATRIX MVG44A 4 4 √ √
MATRIX MVG82 8 2 √ ×
MATRIX MVG82A 8 2 √ √
MATRIX MVG84 8 4 √ ×
MATRIX MVG84A 8 4 √ √
MATRIX MVG88 8 8 √ ×
MATRIX MVG88A 8 8 √ √

Computer Graphics (VGA)/Stereo Audio Matrix Switcher
5
2. Packing of the Product
MVG Matrix Host
RS-232 Communication Cord
Power Supply Cord
CD with Application
3. Installation
MVG 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” rack.
F 3-1 Installing the MVG matrix switcher in the standard 19” rack

Computer Graphics (VGA)/Stereo Audio Matrix Switcher
6
4. Front View of the Product
4.1 Front View of the MVG44A
F 4-1 Front view of the MVG44A
4.2 Front View of the MVG82A、MVG84A、MVG88A
F 4-2 Front view of the MVG82A、MVG84A、MVG88A
5. Rear View of the Product
5.1 Rear View of the MVG44A
F 5-1 Rear view of the MG44A
5.2 Rear View of the MVG82A、MVG84A、MVG88A
F 5-2 Rear view of the MVG82A、MVG84A、MVG88A

Computer Graphics (VGA)/Stereo Audio Matrix Switcher
7
6. External Connection
6.1 Introduction of the Input and Output Connectors
The MVG matrix switchers adopt female 15-pin HD connectors as the video signal I/O interface, and
captive screw connectors as the audio signal I/O interface. Please refer to the rear view figure of the
model concerned for details.
6.2 Connection of RS-232 Communication Port
Except the front control panel, infrared remote controller (Optional) and the Ethernet control (Optional),
the MVG matrix switcher can be controlled from far-end control systems via the RS-232 communication
port.
This RS-232 communication port is a female 9-pin D connector. The definition of its pins is as the table
below.
Pin RS-232 Description
1 N/u Not used
2 Tx Transmit data
3 Rx Receive data
4 N/u Not used
5 Gnd Signal ground
6 N/u Not used
7 N/u Not used
8 N/u Not used
9 N/u Not used
6.2.1 Connection with Control Systems
With the RS-232 port, can control and communicate with the switcher remotely.
6.2.2 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 RS232 software.
RS-232
Computer for controlling
Converter

Computer Graphics (VGA)/Stereo Audio Matrix Switcher
8
F 6-1 Connection between MVG matrix switcher and the computer
6.3 How to Connect with the Input and Output Terminals
The MVG matrix switchers may take laptops, desktop computers, graphic workstations and document
cameras as their input signal source, and projectors, RP TVs, displayers and amplifiers as their output
signal destinations.
VGA Connection:
The MVG matrix switchers support all kinds of the RGB and VGA signal sources with 15-PIN HD VGA
connectors.
The 15-PIN HD VGA connector is shown as the figure below.
Pin RGB YcbCr
1 R Cr
2 G Y
3 B Cb
4 Not used
5 Ground
6 R ground Cr ground
7 G ground Y ground
8 B ground Cb ground
9 Not used
10 Sync signal ground
11 Not used
12 Not used
13 H or H/V
14 V
15 Not used
F 6-2 15-PIN HD VGA connector
If the RGB device doesn’t with VGA output terminals, please convert the signals with an RGB to VGA
switcher for getting high quality VGA output effects.
Please use the special VGA signal cord to connect the input and output devices and connect the 15-Pin
HD connectors carefully.
Audio Signal Connection:
Audio connection is little complicated than video. It has two kinds of connection: balanced and
unbalanced.
The balanced connection transmits a pair of balanced signals with two signal cords. Because
interferences will have the same intensity and the opposite phases on the two signal cords, it will be
counteracted in the end. For the low frequency extent of the audio signal, it would be easily interfered
under long distance transmission. Therefore，as an anti-interference connection , it is mostly used in
audio connection of special device.
The unbalanced connection transmits signals only with a signal cord. Without counteraction, it can be
interfered more easily. Accordingly, it is adopted for household appliance or some cases with low
technical demand.
The two kinds of connection are shown below.
15
6
10
1115

Computer Graphics (VGA)/Stereo Audio Matrix Switcher
9
Unbalanced Input
Tip
Tip
Sleeve
Balanced Input
Tip
Ring
Tip
Ring
Unbalanced Output
Tip
Tip
Sleeve
Sleeves Sleeves
Balanced Output
Tip
Ring
Tip
Ring
Sleeves
F 6-3 Balanced/unbalanced connection on captive screw connector
The connection should be selected is up to the interface of the device. When available, the balanced
connection is the first choice. Before connection, please read the command or relevant demand in the
user manual carefully. In some cases, maybe there is balanced in source signal end but unbalanced in
the destination end. If in a nonstandard case, it is done to connect balanced for the balanced end and
unbalanced for unbalanced end. But if in a standard one, the converter must be used to switch the
signals as the same, balanced or unbalanced.
6.4 How to Connect with the MVG I/O Devices
VGA/VGA signal converter is for the VGA signal source without VGA output ports, such as: desktop
computers and notebooks. It can convert the VGA signals to VGA signals.
F 6-5 Connection of VGA I/O devices
7. Operation of the Control Panel
7.1 Front Panel Description
“AV” AV synchronal button: To transfer video and audio signal synchronously by the switcher
Example: To transfer both the video and the audio signals from input channel No.3 to
output channel No.4.
Operation: Press buttons in this order “AV”,“3”,, “4””.
“VIDEO” Video button: To transfer only video signals from input channel to output channel
Example: To transfer video signals from input channel No.3 to output channel No.4.
Operation: Press buttons in this order “VIDEO”, “3”, “4”.
“AUDIO” Audio button: To transfer only audio signals from input channel to output channel
Example: To transfer audio signals from input channel No.2 to output channel No.3.
Operation: Press buttons in this order ““AUDIO”, “2”, “3””.
“1,2,3,4” I/O Keypads: Keys to select I/O channels.
Example: To transfer input channel No.3 to output channel No.1
Operation: Press buttons in this order : “3” in INPUT area, “1” in OUTPUT area.