IDK MSD-402 User manual

Presentation Switcher
MSD-402
＜User’s Guide＞
Ver.1.0.0
●Thank you for choosing our Digital Multi Switcher.
●To ensure the best performance of this product, please read this User’s Guide fully and carefully before
using it and keep this manual beside the product.
IDK Corporation

MSD-402 User’s Guide
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Trademarks
●Blu-ray Disc and Blu-ray are trademarks of Blu-ray Disc Association.
●The terms HDMI and HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or
registered trademarks of HDMI Licensing, LLC in the United States and other countries.
●PJLink is a trademark in Japan, the United States, and other countries/regions.
●HDBaseT™ and the HDBaseT Alliance Logo are trademarks of the HDBaseT Alliance.
●Microsoft, Windows, Internet Explorer are either registered trademarks or trademarks of the Microsoft
Corporation in the United States and other countries.
●ETHERNET is registered trademark of Fuji Xerox Corporation.
●Mozilla, Firefox and its logo are trademarks or registered trademarks of the Mozilla Fondation in the United
States and other countries.
●Google Chrome is trademark or registered trademark of Google Inc.
●Javascript® is trademark or registered trademark of the Oracle Corporation and its related companies in
the United States and other countries.
●Oracle and Java are registered trademarks of the Oracle Corporation and its related companies in the
United States and other countries.
●All other company and product names mentioned in this manual are either registered trademarks or
trademarks of their respective owners. In this manual, the “®” or “™” marks may not be specified.

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Before reading this manual
●All rights reserved.
●Some of the contents in this user’s guide such as appearance diagrams, menu operations, communication
commands, and so on may differ from the MSD depending on the version.
●This Users guide is subject to change without notice. You can download the latest version from IDK’s
website at: http://www.idk.co.jp/en/index.html
The reference manual for the MSD consists of the following two volumes:
■User’s guide (this document):
Provides explanations and procedures for operations, installation, connections among devices, I/O
adjustment and settings.
■Command guide: Please download the command guide from the website above.
Provides explanations and procedures for external control using RS-232C and LAN communications.
FCC STATEMENT
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference, in which case the user will be required to correct the interference
at their own expense.
CE MARKING
This equipment complies with the essential requirements of the relevant European health, safety and
environmental protection legislation.
WEEE MARKING
Waste Electrical and Electronic Equipment (WEEE), Directive 2002/96/EC
(This directive is only valid in the EU.)
This equipment complies with the WEEE Directive (2002/96/EC) marking requirement.
The left marking indicates that you must not discard this electrical/electronic equipment in
domestic household waste.

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Safety instructions
Read and understand all safety and operating instructions before using this product. Follow all instructions
and cautions as detailed in this document.
Enforcement Symbol
Description
Indicates the presence of a hazard that may result in death or serious
personal injury if the warning is ignored or the equipment is handled
incorrectly.
Indicates the presence of a hazard that may cause minor personal
injury or property damage if the caution is ignored or the equipment is
handled incorrectly.
Symbol
Description
Example
Caution
This symbol is indicated to alert the user. (Warning and caution)
Electrical
Hazard
Prohibition
This symbol is intended to prohibit the user from actions.
Do not
disassemble
Instruction
This symbol is intended to instruct the user.
Unplug
Caution
Warning

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Prohibition
Do not place the product in any unstable place.
Install the product to a horizontal and stable place. Otherwise, it may fall/turn over and lead to injury.
Do not place the product in any environment with vibration.
Otherwise, it may move/fall and lead to injury.
Keep out any foreign objects.
In order to avoid fire or electric shock, do not allow foreign objects, such as metal and paper, to enter the product
from the vent holes.
For power cable/ plug:
•Do not scratch, heat, or modify, including extending them.
•Do not pull, put heavy stuff on them, or pinch them.
•Do not bend, twist, or tie them together forcefully.
If they are used in those states continuously, it may cause fire or electric shock. If power cables/plugs become
damaged, contact IDK.
Do not
disassemble
Do not repair, modify or disassemble.
Since the product includes high-voltage part, those actions may cause fire or electric shock. For internal
inspections or repairs, contact IDK.
Do not
touch
In the event of lighting or thunder, do not touch the main unit and cables such as
power cable and LAN cable.
Contact may cause electric shock
Instruction
For installation:
The product is intended to be installed by skilled technicians. For installation, please contact a system integrator or
IDK. Otherwise, it may cause fire, electric shock, injury, or property damage.
Set the power plug in a convenient place to unplug easily.
You can easily unplug in case of any extraordinary failure or abnormal situation, and it also helps for unplugging
when you do not use it for a long period.
Plug the power plug into appropriate outlet completely.
If the plug is plugged incompletely, it may overheat which causes electrical shock or fire. Do not use damaged plug
or loosened outlet.
Clean the power plug regularly.
If the plug is covered in dust, it may cause fire due to reduced insulating power.
Unplug
Unplug immediately if the product smokes, makes unusual noise, or smells.
If you continue to use the product under those situations, it may cause electric shock or fire. After confirming that
the product stops smoking, contact IDK.
Unplug immediately if you drop the product or if the cabinet is damaged.
If you continue to use the product under those situations, it may cause electrical shock or fire. For maintenance
and repair, contact IDK.
Unplug immediately if water or other objects are directed inside.
If you continue to use it under those situations, it may cause electrical shock or fire. For maintenance and repair,
contact IDK.
For connection
Instruction
Differences in ground potential among the product and peripheral devices may cause electric shock or damage of
the devices. When using cables to connect devices, including connection of long-distance transmission, unplug
the power cables of all related devices.
After connecting signal/control cables of each device, plug in the power cables of each device.
Warning

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For installation
For rack mount devices:
Instruction
Mount the product to the rack meeting EIA standards, and maintain spaces above and
below for air cooling. For your safety, attach an L-shape bracket in addition to the mount
bracket kit for the front panel to balance the weight.
For devices with rubber feet:
Instruction
Never insert only the screws into the holes after removing the rubber feet. It may lead to
damage when the screws contact electrical circuit or parts inside of the product.
To put the rubber feet back on, use only provided rubber feet and screws.
Prohibition
Do not place the product in any place where it will be subjected to high
temperatures.
If the product is subjected to direct sunlight or high temperatures, it may cause fire.
Do not place the product in humid, oil smoke, or dusty place.
If the product is placed near humidifiers or dusty area, it may cause fire or electric shock.
Do not block the vent holes.
If ventilation slots are blocked, it may cause fire or failure due to internal heat.
Do not put heavy items on the product.
It may fall/turn over and lead to injury.
Do not exceed ratings of outlet and wiring devices.
If several plugs are put in an outlet, it may cause fire and electric shock.
Use only the provided AC adapter and power cable.
If non-compliant adapter or power cables is used, it may cause fire or electrical shock. Use the provided AC
power connection cable. If you want to use your product in other countries that use different AC power cables,
contact IDK.
No wet hands
Do not plug or unplug with wet hands.
It may cause electrical shock.
Instruction
Use and store the product within the specified temperature/humidity range.
If the product is used outside the range continuously, it may cause fire or electric shock.
Turn off devices when they are connected to another device.
It may cause fire or electric shock.
Unplug
Unplug the power plug if you do not use the product for a long period.
In case of defect, it may cause fire.
Unplug the power plug before cleaning.
It may cause electric shock.
Caution

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Altitude:
Instruction
Do not place the product at elevations of 2,000 meters (6562 feet) or higher above sea
level. Failure to do so may shorten the life of the internal parts and result in malfunctions.

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Table of Contents
1Included items.....................................................................................................................................11
2Product outline....................................................................................................................................12
3Features..............................................................................................................................................13
4Panels.................................................................................................................................................14
4.1 Front panel.....................................................................................................................................14
4.2 Rear panel......................................................................................................................................15
5Example connection............................................................................................................................16
6Precautions.........................................................................................................................................17
6.1 Installing rubber feet.......................................................................................................................17
6.2Installation......................................................................................................................................17
6.3 Cabling...........................................................................................................................................18
6.3.1 Cables ....................................................................................................................................18
6.3.2 Twisted pair cable...................................................................................................................19
6.3.3 Connecting audio cables.........................................................................................................20
6.3.4 Connecting RS-232C cable.....................................................................................................20
6.3.5 DIN plug AC adapter...............................................................................................................21
7Basic operation....................................................................................................................................23
7.1 Required time.................................................................................................................................23
7.2 Switching input channel..................................................................................................................23
7.2.1 Selecting input channel ...........................................................................................................23
7.2.2 Turning OFF input signal.........................................................................................................23
7.3 Setting and canceling key lock........................................................................................................24
7.4 Initialization ....................................................................................................................................25
7.5 PinP (Picuture in Picuture)..............................................................................................................28
7.6 WEB menu operation......................................................................................................................28
7.6.1 Control from WEB browser......................................................................................................28
7.6.2 WEB menu..............................................................................................................................29
8Menu...................................................................................................................................................30
8.1 WEB menu list................................................................................................................................30
8.2 Input Signal Automatic Detection....................................................................................................32
8.3 Crosspoint operation (WEB menu)..................................................................................................34
8.3.1 Selecting input channel (WEB menu) ......................................................................................35
8.3.2 PinP output.............................................................................................................................35
8.3.3 Editing channel name..............................................................................................................36
8.3.4 Setting and canceling key lock (WEB menu)............................................................................37
8.4 Output timing (WEB menu).............................................................................................................38
8.4.1 Output resolution.....................................................................................................................40
8.4.2Aspect ratio for sink device......................................................................................................41
8.4.3 Aspect ratio.............................................................................................................................41
8.4.4 Aspect ratio control .................................................................................................................42
8.4.5 Overscan ................................................................................................................................42
8.4.6 Display position.......................................................................................................................43
8.4.7 Display size.............................................................................................................................43
8.4.8 Masking ..................................................................................................................................44
8.4.9 Automatic sizing......................................................................................................................45
8.4.10 Background color....................................................................................................................45
8.4.11 Test pattern.............................................................................................................................45

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8.5 Quality settings (WEB menu)..........................................................................................................47
8.5.1 Sharpness...............................................................................................................................49
8.5.2 Brightness...............................................................................................................................49
8.5.3 Contrast..................................................................................................................................49
8.5.4 HUE........................................................................................................................................49
8.5.5 Saturation ...............................................................................................................................50
8.5.6 Black level...............................................................................................................................50
8.5.7 Gamma...................................................................................................................................50
8.5.8 Default color............................................................................................................................50
8.6 Input settings (WEB menu).............................................................................................................51
8.6.1 No-signal input monitoring.......................................................................................................52
8.6.2 Setting HDCP input.................................................................................................................52
8.6.3 Input equalizer ........................................................................................................................53
8.6.4 Automatic detection of input video interruption.........................................................................53
8.6.5 Priority of input channel automatic switching............................................................................54
8.6.6 Masking time after automatic switching of input channel..........................................................55
8.7 Input timing (WEB menu)................................................................................................................56
8.7.1 The total number of horizontal dots..........................................................................................57
8.7.2 Start position...........................................................................................................................57
8.7.3 Active area..............................................................................................................................58
8.7.4 Input timing initialization ..........................................................................................................58
8.8 Output settings (WEB menu) ..........................................................................................................59
8.8.1 Output mode...........................................................................................................................60
8.8.2 Synchronous signal output with no input video.........................................................................60
8.8.3 Output video with no input video..............................................................................................61
8.8.4 Window transition effect ..........................................................................................................61
8.8.5 Window transition speed .........................................................................................................61
8.8.6 Wipe color...............................................................................................................................62
8.8.7 HDCP output...........................................................................................................................62
8.8.8 The number of HDCP retries...................................................................................................62
8.8.9 Deep Color..............................................................................................................................63
8.8.10 CEC connection......................................................................................................................63
8.8.11 HDCP re-authentication...........................................................................................................63
8.9 Audio settings (WEB menu)............................................................................................................64
8.9.1 Output level.............................................................................................................................66
8.9.2 Output mute............................................................................................................................66
8.9.3 Audio output connector............................................................................................................66
8.9.4 Multi channel audio output.......................................................................................................67
8.9.5 Test tone.................................................................................................................................67
8.9.6 Input level ...............................................................................................................................67
8.10 EDID: Extended Display Identification Data (WEB menu)................................................................68
8.10.1 EDID.......................................................................................................................................70
8.10.2 Resolution for PCs ..................................................................................................................71
8.10.3 Input resolution for AV devices................................................................................................72
8.10.4 Deep Color..............................................................................................................................73
8.10.5 Audio format............................................................................................................................73
8.10.6 Speaker configuration .............................................................................................................74
8.10.7 Copying EDID.........................................................................................................................75
8.11 Communication settings (WEB menu).............................................................................................76
8.11.1 RS-232C communication.........................................................................................................80

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8.11.2 IP address/subnet mask/gate way address..............................................................................80
8.11.3 TCP port number.....................................................................................................................81
8.11.4 MAC address..........................................................................................................................81
8.12 Preset memory (WEB menu)..........................................................................................................82
8.12.1 Loading cross point.................................................................................................................83
8.12.2 Saving cross point...................................................................................................................83
8.12.3 Editing cross point...................................................................................................................84
8.12.4 Loading all settings .................................................................................................................84
8.12.5 Saving all settings...................................................................................................................85
8.12.6 Copying output setting.............................................................................................................86
8.12.7 Startup setting.........................................................................................................................87
8.13 Setting bitmap (WEB menu)............................................................................................................88
8.13.1 Sending bitmap file..................................................................................................................89
8.13.2 Outputing bitmap image ..........................................................................................................90
8.13.3 Background color....................................................................................................................90
8.13.4 Aspect ratio.............................................................................................................................91
8.13.5 Display position.......................................................................................................................91
8.13.6 Input channel assignment........................................................................................................92
8.13.7 Bitmap output at startup ..........................................................................................................92
8.13.8 Dividing memory area .............................................................................................................92
8.13.9 Input image capture.................................................................................................................95
8.14 Other settings (WEB menu)............................................................................................................96
8.14.1 Startup setting for key lock ......................................................................................................97
8.14.2 Automatic reload time..............................................................................................................97
8.14.3 Backup and restore all settings................................................................................................97
8.14.4 Initialization (WEB menu)........................................................................................................98
8.14.5 Displaying version...................................................................................................................98
8.15 Displaying status (WEB menu) .......................................................................................................99
8.15.1 Input signal status.................................................................................................................100
8.15.2 Sink device status.................................................................................................................103
8.15.3 Displaying EDID of sink device..............................................................................................105
9Product specification .........................................................................................................................106
10 Troubleshooting.................................................................................................................................108

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1 Included items
Make sure all items below are included in the package.
If any items are missing or damaged, please contact IDK.
One (1) MSD-402 (main unit)
One (1) lockalable DIN plug AC adapter
Three (3) cord clamps
Two (2) terminal Block (5-pin)
One (1) terminal Block (3-pin)
Four (4) rubber feet
[Figure 1.1] Included items list

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2 Product outline
MSD-402 (hereafter referred to as “the MSD”) Presentation Switcher provides 4 inputs and 2 outputs and has
a built-in scan converter.
For video input, 2 HDBaseT and 2 HDMI/DVI are included. Input video signals are converted to HDMI/DVI
signals or HDBaseT signals output at resolutions at up to QWXGA or 1080p.
For audio input, 4 digital inputs are included. Selected audio signals are output to digital audio and analog
audio. Audio levels of each input and output can be set individually.
RS-232C and LAN are provided as communication ports for external control communication and web browser
to enable you to set menus remotely. HDBaseT input/output supports bidirectional LAN communication.
Video
Matrix
PinP
EDID emulation
Input EQ
MSD-402
RS-232C
LAN
CPU
Transmitter
EDID emulation
Receiver
Up to 330 ft. / 100 m
１Port
１Port
OUT1
Up to 16.4 ft. / 5 m
OUT2
OUT1
OUT2
Audio
Matrix
D/A Conversion
D/A Conversion
Analog audio
Stereo L / R
Balanced / Unbalanced
Analog audio
Stereo L / R
Balanced / Unbalanced
IN3 to IN4
Up to 330 ft. / 100 m
Up tp 99 ft. / 30 m
IN1 to IN2
Digital Video / Audio /
Communication
HDBaseT Inputs
2
Digital Video / Audio
HDMI DVI Inputs
2
Digital Video / Audio
HDMI DVI Output
1
Digital Video / Audio /
Communication
HDBaseT
Scan
Converter
4 channel
PinP
2
2
2
2
Output
1
1Output
1Output
[Figure 2.1] Block diagram

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3 Features
■Video
・Up to QWXGA (RB)*1 or 1080p
・HDMI input cable EQ
INPUT: up to 33 ft. to 99 ft. approx. / 10 m to 30 m
・Up to 328.08 ft. approx. / 100 m extension over a Cat6 cable
・Scan converter
・Picture in Picture (PinP) function
・Aspect control
・Seamless switching*2
・Anti-snow
■Audio
・Digital audio de-emmbedded
・Audio level adjustment for each input/output.
■Control input
・RS-232C, LAN
■Others
・EDID emulation (with copy function)
・Web browser for all settings
・Automatic input channel switching
・Crosspoint memory
・Preset memory
・Last memory
・Connection reset
・Key lock
・AC adapter mechanical lock
*1 (RB) = Reduced Blanking
*2 A black frame is displayed at the time of switching

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4 Panels
4.1 Front panel
①② ③
[Figure 4.1] Front panel drawing
[Table 4.1] Front panel’s part name and description
#
Part name
Description
①POWER LED Shows power status of the MSD
ON: Power is supplied to the MSD
OFF: Power is not supplied to the MSD
②KEY LOCK LED Shows key lock status of the MSD
ON: Locked
OFF: Unlocked
【
See: 7.3 Setting and canceling key lock (P.24)
】
③
Input channel selection key
Selects input channels
【See: 7.2 Switching input channel (P.23) 】

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4.2 Rear panel
⑥⑩
③⑤⑦⑧⑪
⑨
④
①②①②②⑥
③
[Figure 4.2] Rear panel drawing
[Table 4.2] Rear panel’s part name and description
# Part name Description
①HDMI input connector Input connectors for HDMI and DVI signal to connect to a source
devices, such as Blu-ray players.
②
HDMI cable fixing hole
Fixes HDMI cables by inserting cable clamps.
【
See: [Figure 6.1] Attaching a cable clamp (P.18)
】
③HDBaseT input
connector Digital (video/audio) signal can be extended up to 100 m/328.08 ft. using an IDK’s HDC transmitter together.
【
See: 6.3.2 Twisted pair cable (P.19)
】
④HDMI output connector Output connector for HDMI and DVI signal to connect to sink devices
such as LC monitors and projectors
⑤HDBaseToutput
connector Digital (video/audio) signal can be extended up to 100 m/328.08 ft. using an IDK’s HDC receiver together.
【See: 6.3.2 Twisted pair cable (P.19) 】
⑥Audio output connector Analog output connectors of audio to connect to amplifier, speakers, and
mixers.
【
See: 6.3.3 Connecting audio cables (P.20)
】
⑦
LAN port
For external control by communication commands or web browsers
⑧RS-232C port For external control by communication commands
【See: 6.3.4 Connecting RS-232C cable (P.20) 】
⑨Maintenance port Not used.
Keep this connector free
⑩
DC power connector
Connects attached AC adapter
【See: 6.3.5 DIN plug AC adapter (P.21) 】
⑪Frame ground For indoor ground terminal. M4 screws are used.

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5 Example connection
Note PC Blu-ray Player
Speaker
Analog audio
Monitor
LAN
Desktop PC
Power Amp.
Note PC
HDBaseT
Up to 330 ft. / 100 m
HDMI / DVI
Up to 6.56 ft. / 2 m
HDBaseT
Up to 330 ft. / 100 m
HDBaseT
Up to 330 ft. / 100 m
HDC series
receiver
HDMI / DVI
Up to 6.56 ft. / 2 m
Blu-ray Player
HDMI / DVI
Up to 99 ft. / 30 m
HDMI / DVI
Up to 99 ft. / 30 m
HDMI / DVI
Up to 16.4 ft. / 5 m
Projector
Rx
RS-232CLAN
Cat6 Rxfor HDMI
POWER LINK HDCP
STATUS
POWER LINK HDCP
POWER LINK HDCP
STATUS
FG DC5V 2A
HDC-RH100-C
INPUT
DON'T
CONNECT
LAN
HDBaseT
CAUTION
!
(MAX2M)
HDMI
OUTPUT
HDC series
transmitter
RS-232CLAN
Tx
Cat6 Txfor HDMI
POWER LINK HDCP
STATUS
POWER LINK HDCP
POWER LINK HDCP
STATUS
INPUT
(MAX2M)
OUTPUTFG DC5V 2A
DON'T
CONNECT
LAN
HDC-TH100-C
HDBaseT
CAUTION
!
HDMI
HDC-TH200
Blue-ray Player
MSD-402
HDMI / DVI
Up to 99 ft. / 30 m
Composite / Y/C /
Analog RGB /
Analog YPbPr
[Figure 5.1] Source and sink devices are connected

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6 Precautions
Before connecting to external devices, follow the precautions below.
6.1 Installing rubber feet
Please clean up the MSD main unit, and then install rubber feet to the four corners of the MSD.
6.2 Installation
When installing the MSD, please observe the following precautions.
・Do not place the MSD on top of another MSD.
・Do not block vent holes. Please secure the space above ambient 30 mm/1.18 inches.
・Do not install the MSD to an enclosed space. When the MSD needs to be installed to EIA rack mount or
an enclosed space, please prepare ventilating equipment to keep the ambient temperature at 40 degrees
C/104 degrees F or less. If inadequately vented, the life of parts may be shortened and operations may be
affected.

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6.3 Cabling
When connecting the MSD to the external devices, please observe the following precautions.
・Read manuals of the external devices.
・Before you connect the cable to the MSD or an external device, please remove electrification of the body
by touching the metal around that is grounded.
・Turn off all units power before connecting the cable.
・Be sure to plug cables completely and install them without any stress on connectors.
・Fix HDMI cables using cable clamps to prevent those cables from falling off.
Fixing HDMI cable using cable clamp
Removing HDMI cable and cable clamp
①②③
Pull out while pressing
④
② ④ ⑤① ③
[Figure 6.1] Attaching a cable clamp
6.3.1 Cables
IDK Corporation provides various digital cables such as HDMI, DVI, and twisted pair cables.
Please choose appropriate cables for your system configuration. For analog audio and RS-232C, please use
on processing the cable to fit the connectors.
【See: 6.3.3 Connecting audio cables (P.20) 】
【See: 6.3.4 Connecting RS-232C cable (P.20) 】

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6.3.2 Twisted pair cable
When connecting twisted pair cables to the MSD, please observe the following precautions.
・Cat5e/Cat6 UTP/STP can be used, however, we recommend a CAT.5E HDC cable* for the twisted pair
cable which is developed by IDK to maximize quality of video transmission.
・If using an STP cable, connect the FG connector to an earth ground source. Otherwise, the shielding
feature does not work correctly. When using a UTP cable, we still recommend using the ground
connector.
・The shielded STP cables are less affected by interference or external noise than UTP cables.
・The connector for twisted pair cable is as same as the connectors which are used for Ethernet (8 core
modular type connector), however, it cannot be connected and use for Ethernet because the way of data
transmission is different.
・The maximum extension distance of Cat5e/Cat6 UTP/STP cable is the shorter maximum extension
distance of the connected HDC receiver and sink device.
・For pin assignments, apply T568A or T568B standards for straight through wiring.
・Do not give connection cables a strong pull. The allowable tension of the twisted pair cable is 110 N.
・Do not bend the connection cable at a sharp angle. Keep the bend radius four times of the cable
diameter or longer.
・Do not tie the cable tightly; leave a space allowing the cable to move slightly.
・If you use the same cables, we recommended keeping a distance between the cables or not to place the
cables closely in parallel.
・Keep the twisted pair cable as straight as you can. If you coil the cable, it is easily affected by noise.
・Do not place this product in an electrically noisy environment, since high-speed signal is transmitted.
Particularly when you use a high-output radio around this device, video or audio may be interrupted.
・If the distance between the transmitter and receiver is 100 m/328.08 feet or less, cables can be joined
using an RJ-45 plug coupler or wall outlet. Up to two cable couplers are allowed. Couplers supporting
Cat6A (10GBase-T) are recommended.
・[Figure 6.2] showsextension distance by each twisted pair cable. The extension distance depending on
installation environment.
[Figure 6.2] Twisted pair cable extension distance
External noise
Category
Distance
Dot clock
Memo
Affected
UTP
Cat5e
50 m/164.04 ft.
<= 225 MHz
IDK recommends Cat5e STP,
Cat6 UTP/STP, or CAT.5E HDC
cable* if the extension distance
exceeds 50 m/164.04 ft.
Cat6 100 m/328.08 ft.
Less affected STP Cat5e
*
Cat6
100m/328.08 ft.
* CAT.5E HDC cable developed by IDK Corporation is double shielded twisted pair cable for high quality
video transmission. It protects video signals from external noise or other interferences by having double
shielded structure. Its transmission characteristic meets 500 MHz up to 100 m/328.08 ft., and it is certified and
recommended by HDBaseT alliance.
【NOTE】If there is a problem in the transmission path, video or audio may be interrupted. Please check the
items above. If the problem still cannot be solved, shorten the length of the twisted pair cable.

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20
6.3.3 Connecting audio cables
Please fix audio cable to the attached terminal block (5-pin), and then connecting to the MSD.
The MSD supports both balanced and unbalanced signals
IDK recommends using AWG 28 to AWG16 cable. The maximum peeling length is 7 mm (0.28 inch approx.)
+
-
+
-
G
L
R
Lch +
Lch -
GND
Rch +
Rch -
Up to 7mm (0.28 inch approx.)
Balanced signal
Unbalanced signal
-
+
-
+
G
L
R
Lch
GND
Rch
MSD-402
Up to 7mm (0.28 inch approx.)
[Figure 6.3] Connecting audio cable to terminal block (5-pin) connector
6.3.4 Connecting RS-232C cable
Please fix RS-232C cable to the attached terminal block (3-pin), and then connecting to the MSD.
IDK recommends using AWG 28 to AWG16 cable. The maximum peeling length is 7 mm (0.28 inch approx.)
If you connect to the MSD using conversion cable from D-sub connector (9-pin) cable, please short RTS/CTS
and DTR/DSR if necessary.
Tx
Rx
G
RS-232C Tｘ
RS-232C Rx
GND
Up to 7mm (0.28 inch approx.)
MSD-402
[Figure 6.4] Connecting RS-232C cable to terminal block (3-pin) connector