PTN MRG88A User manual

RGBHV/Stereo Audio Matrix Switcher 8x8
PTN Electronics Limited www.PTN-electronics.com
MRG88A
PTN RGBHV/Stereo Audio Matrix Switcher 8x8
USER MANUAL
Version: MRG88A2010V1.0

RGBHV/Stereo Audio Matrix Switcher 8x8
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
2010.01.01
First Version.
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 2010-01-01.

RGBHV/Stereo Audio Matrix Switcher 8x8
PTN Electronics Limited www.PTN-electronics.com
Table of Contents
1. Introduction ...............................................................................................................1
1.1. Introduction of MRG88A ................................................................................1
1.3. Package Contents..........................................................................................1
2. Features....................................................................................................................1
3. Specification..............................................................................................................1
4. Operations of the Control panel and the Remote Controller .....................................3
4.1. Operation of the Control Panel ......................................................................3
4.2. Usage of the Remote Controller ....................................................................4
5. External Connection..................................................................................................5
5.1. Introduction of the Input and Output Connectors ...........................................5
5.2. Connection with RS232 Communication Port................................................6
5.3. Connection with Computer.............................................................................8
5.4. RGBHV connection........................................................................................6
5.5. Audio Signal Connection................................................................................7
6. System Diagram........................................................................................................9
7. Communication Protocol and Command Codes .......................................................9
8. Safety Operation Guide...........................................................................................11
9. Troubleshooting & Maintenance..............................................................................13
10.After-sales Service..................................................................................................14

RGBHV/Stereo Audio Matrix Switcher 8x8
PTN Electronics Limited www.PTN-electronics.com
1
1. Introduction
1.1. Introduction of MRG88A
MRG88A is an 8x8 RGBHV matrix switcher following with stereo audio. It supports
audio follow and audio breakaway switching. With bandwidth up to 450MHz (-3db), it
supports cross-point switching. It shows a good application in broadcast room, television
teaching room, commanding center etc.
1.2. Package Contents
1 x MRG88A
1 x Power cord
1 x IR remote (The cell battery is not included)
16 x Captive screw connectors
4 x Plastic cushions
1 x RS232 cable
1 x User manual
2. Features
Video bandwidth up to 350MHz.
Audio follow or audio breakaway switching.
Fast switching speed in 200ns.
Power-fail protection, allows switcher restore to previous settings.
10 presets to save and recall switching patterns.
Front panel lockout.
Controllable via button, IR & RS232.
3. Specification
Video Input
Video Output
Input
8 RGBHV
Output
8RGBHV
Input
Connector
Female BNC
Output
Connector
Female BNC
Return Loss
<-30dB@5MHz
Return Loss
-30dB@5MHz
Input Level
0.5 ~ 2.0Vp-p
Output Level
0.5 ~ 2.0Vp-p
Input
Impedance
75Ω/510Ω(switchable)
Output
Impedance
75Ω/510Ω(switchable)
DC Offset
1.5V
Switching
Type
Vertical interval
Video General
Gain
0 dB
Bandwidth
450MHz (-3dB), fully
load
Video Signal
RGBHV, RGBS,
Video Type
RGBHV, RGBS,

RGBHV/Stereo Audio Matrix Switcher 8x8
PTN Electronics Limited www.PTN-electronics.com
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RGsB, RsGsBs,
component video,
S-video, and
composite video.
RGsB, RsGsBs,
component video,
S-video, and
composite video .
Switching
Speed
200ns (Max.)
Crosstalk
<-80dB@5MHz
Audio Input
Audio Output
Input
8 stereo,
balanced/unbalanced
Output
8 stereo,
balanced/unbalanced
Input
Connector
Captive screw
connectors, 5 pole
Output
Connector
Captive screw
connectors, 5 pole
Input
Impedance
>10KΩ
Output
Impedance
50Ω
Audio General
Frequency
Response
20Hz ~ 20KHz
CMRR
>90dB@20Hz~20KHz
Stereo
Channel
Separation
>80dB@1KHz
THD + Noise
0.03%@1KHz at
nominal level
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
30W
Temperature
-20 ~ +70℃
Humidity
10% ~ 90%
Case
Dimension
W483 x H130 x
D260mm (3U high, full
rack wide)
Product
Weight
7Kg

RGBHV/Stereo Audio Matrix Switcher 8x8
PTN Electronics Limited www.PTN-electronics.com
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4. Operations of the Control panel and the Remote Controller
4.1. Operation of the Control Panel
①Input Channel ②Output Channel ③Function Buttons ④Power indicator
F4-1 Front Panel
Detailed Description:
Buttons
Function Description
INPUTS
Input buttons, ranging from "1" to "8".
OUTPUTS
Output buttons, ranging from "1" to "8".
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”
ALL
All button: To transfer an input channel to all output channels.
Example1: To transfer video and audio signals from input
channel No.7 to all output channels.
Operation: Press buttons in this order “7”, “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……8->8.

RGBHV/Stereo Audio Matrix Switcher 8x8
PTN Electronics Limited www.PTN-electronics.com
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Operation: Press buttons in this order “ALL”, “THROUGH”.
UNDO
Undo button: To resume to the status before the command just
performed.
Backspace button: To backspace the latest input button.
THROUGH
Through button: To transfer the signals directly to the
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”.
Note: With the front control panel, the switcher could be control directly and rapidly by
pressing the buttons under below format.
“Switch Mode” +“Input Channel” +“Output Channel”
1) “Switch Mode”: “AV”, “VIDEO”, “AUDIO”
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 controlled.
4.2. Usage of the Remote Controller
With the infrared remote controller, the matrix switcher could be control remotely.
Because the function buttons on the remote controller are the same with the ones on
the front control panel, the remote controller shares the same control operation and
command format with the control panel.
Operations of the remote controller are showed as follows.

RGBHV/Stereo Audio Matrix Switcher 8x8
PTN Electronics Limited www.PTN-electronics.com
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F4-2 Panel of the Remote Controller
5. External Connection
5.1. Introduction of the Input and Output Connectors
①②③④⑤⑥
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.

RGBHV/Stereo Audio Matrix Switcher 8x8
PTN Electronics Limited www.PTN-electronics.com
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Detailed description:
No.
Name
Description
①
RGBHV INPUTS
RGBHV input channels, 8 in total. Female BNC
connector.
②
AUDIO INPUTS
Audio input channels, 8 in total. 5-pole captive screw
connector.
③
RGBHV
OUTPUTS
RGBHV output channels, 8 in total. Female BNC
connector.
④
AUDIO OUTPUTS
Audio output channels, 8 in total. 5-pole captive screw
connector.
⑤
RS232
Serial control port, 9-pin female connector.
⑥
AC100V~240V
Alternating current for power supply.
5.2. RGBHV connection
The MRG matrix switchers support the Composite Video, Component Video (YPbPr),
Super Video (YC) and VGA signal source. RGBHV signal output terminals or YC output
terminals are needed in AV device; RGBHV signal output terminals are needed in VGA
device.
The BNC connector is shown as the figure below.
Sleeve ( )
Tip (+)
BNC Connector
If the VGA device doesn’t with RGBHV output terminals, please convert the signals with
a VGA to RGBHV switcher for getting high quality MRG output effects.
Please use the special five core RGBHV signal cord to connect the input and output
devices and connect the BNC connector R(red)、G（green）、 B（blue）、 H（horizontal）、
V（vertical）carefully.
Attention:
Please make sure the RGBHV connectors from the source and to the destination should
be in the same order, otherwise it world cause color loss or no output signal at all.

RGBHV/Stereo Audio Matrix Switcher 8x8
PTN Electronics Limited www.PTN-electronics.com
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5.3. 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.
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
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.
5.4. Connection with RS232 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 RS232 communication port. This RS232 communication port is a
female 9-pin D connector. The definition of its pins is as the table below.