IDK FDX-12UHD User manual

4K@60 and HDCP 2.2 Digital Matrix Switcher
FDX-12UHD
<User’s Guide>
Ver.1.0.0
● Thank you for choosing our product.
● To ensure the best performance of this product, please read this User’s Guide fully and carefully before
using it and keep this manual together with the product for reference as needed.
IDK Corporation

FDX-12UHD User’s Guide
2
Trademarks
Blu-ray Disc and Blu-ray are trademarks of Blu-ray Disc Association.
ETHERNET is a registered trademark of Fuji Xerox Co., Ltd.
Google Chrome is a registered trademark or trademark of Google Inc.
The terms HDMI and HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or
registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries.
HDBaseT™ and the HDBaseT Alliance Logo are trademarks of the HDBaseT Alliance.
Javascript®is a trademark or registered trademark of Oracle Corporation, its subsidiaries, and affiliated
companies in the United States and other countries.
Microsoft, Windows, Internet Explorer are either registered trademarks or trademarks of the Microsoft
Corporation in the United States and other countries.
Oracle and Java are trademarks of Oracle Corporation its subsidiaries, and affiliated companies in the
United States and other countries.
The terms Anti-snow and Connection Reset are registered trademarks of IDK Corporation in Japan.
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.

FDX-12UHD User’s Guide
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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 depending on the version of the product.
This User’s Guide is subject to change without notice. You can download the latest version from IDK’s
website at: http://www.idkav.com
The reference manual 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 his 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.
If a 4K HDBaseT slot board is mounted, please use STP cables in order to reduce noise caused by cables.
Before reading this manual

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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 product 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 product is
handled incorrectly.
Symbol
Description
Example
Caution
This symbol is intended to alert the user. (Warning and caution)
Electrical
Hazard
Prohibited
This symbol is intended to prohibit the user from specified actions.
Do not
disassemble
Instruction
This symbol is intended to instruct the user.
Unplug
Caution
Warning

FDX-12UHD User’s Guide
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Prohibited
Do not place the product in any unstable place.
Install the product in 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 lengthening them.
•Do not pull, place heavy objects on them, or pinch them.
•Do not bend, twist, or tie them together forcefully.
Misuse of the power cable and plug may cause fire or electric shock. If power cables/plugs become damaged,
contact your IDK representative.
Do not
disassemble
Do not repair, modify or disassemble.
Since the product includes circuitry that uses potentially lethal, high voltage levels, disassembly by unauthorized
personnel may lead to the risk of fire or electric shock. For internal inspection or repair, contact your IDK
representative.
Do not
touch
In the event of electrical storms, keep away from 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. Improper installation may lead to the risk of fire, electric shock, injury, or property damage.
Set the power plug in a convenient place to unplug easily.
Unobstructed access to the plug enables unplugging the product in case of any extraordinary failure, abnormal
situation or for easy disconnection during extended periods of non-use.
Insert the power plug into an appropriate outlet completely.
If the plug is partially inserted, arching may cause the connection to overheat, increasing the risk of electrical shock
or fire. Do not use a damaged plug or connect to a damaged outlet.
Clean the power plug regularly.
If the plug is covered in dust, it may increase the risk of firer.
Unplug
Unplug immediately if the product smokes, makes unusual noise, or produces a
burning odor.
If you continue to use the product under these conditions, it may cause electric shock or fire. After confirming that
the product stops smoking, contact your IDK representative.
Unplug immediately if the product falls and/or if the cabinet is damaged.
If you continue to use the product under these conditions, it may increase the risk of electrical shock or fire. For
maintenance and repair, contact your IDK representative.
Unplug immediately if water or other objects are directed inside.
If you continue to use the product under these conditions, it may increase the risk of electrical shock or fire. For
maintenance and repair, contact your IDK representative.
For connection
Instruction
Differences in ground potential among product population of interconnected products and other external devices
may increase the risk of electric shock to personnel or cause damage to the devices or cabling infrastructure. When
using cables to connect devices, including connection of long-distance transmission cables, unplug the power
cables of all interconnected devices.
Power may be restored after all signal/control cables are connected to each device.
Warning

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■If the following problem occurs:
Unplug
●Unplug immediately if the product smokes, makes unusual noise, or produces a
burning odor.
If you continue to use the product under these conditions, it may cause electric shock or fire.
●
Unplug immediately if the product is damaged due to falling .
If you continue to use the product under these conditions, it may increase the risk of electrical shock or fire. For
maintenance and repair, contact your IDK representative.
●
Unplug immediately if water or other objects are directed inside.
If you continue to use the product under these conditions, it may increase the risk of electrical shock or fire. For
maintenance and repair, contact your IDK representative.
Warning

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■For installing and connecting products:
Prohibited
●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 while under operation, it may affect the
product’s performance and reliability and may increase the risk of fire.
●
Do not place the product in dusty, oil smoke filled, or humid place.
If the product is placed near humidifiers or in a dusty area, it may increase the risk of fire or electric shock.
●
Do not block the vent holes.
If ventilation slots are blocked, it may cause the product to overheat, affecting performance and reliability and
may increase the risk of fire.
●
Do not place or stack heavy items on the product.
Failure to observe this precaution may result in damage to the product and other property and may lead to the
risk of personal injury.
●
Do not exceed ratings of outlet and wiring devices.
Exceeding the rating of an outlet may increase the risk of fire and electric shock.
No wet hands
●Do not plug or unplug with wet hands.
Failure to observe this precaution may increase the risk of electrical shock.
Instruction
●Use and store the product within the specified temperature/humidity range.
If the product is used outside the specified range for temperature and humidity continuously, it may increase the
risk of fire or electric shock.
●
Do not place the product at elevations of 2,000 meters (1.24 mi.) or higher above
sea level.
Failure to do so may shorten the life of the internal parts and result in malfunctions.
●
When mounting the product into the rack, provide sufficient cooling space.
Mount the product in a the rack meeting EIA standards, and maintain spaces above and below for air circulation.
For your safety, attach an L-shaped bracket in addition to the panel mount bracket kit to improve mechanical
stability.
●
Never insert screws without the rubber feet into the threaded holes
on the bottom
of the product.
Never insert screws without the rubber feet into the threaded holes on the bottom of the product. Doing so may
lead to damage when the screws contact electrical circuitry or components inside the product.
Reinstall the originallysupplied rubber feet using only the originally supplied screws.
■For operating products:
Prohibited
●Use only the supplied power cable and AC adapter.
●
Do not use the supplied power cable and AC adapter with other products.
If non-compliant adapter or power cables are used, it may increase the risk of fire or electrical shock.
Unplug
●If the product won’t be used for an extended period of time, unplug it.
Failure to observe this precaution may increase the risk of fire.
●
Unplug the product before cleaning.
To prevent electric shock.
■For power
Electrical
Hazard
●Double Pole / Neutral Fusing
If a fuse blows out, it may cause electric shock.
Caution

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Table of Contents
1Included items.....................................................................................................................................10
2Product outline....................................................................................................................................11
3Feature ...............................................................................................................................................12
4Panels.................................................................................................................................................13
4.1 Front panel...................................................................................................................................13
4.2 Rear panel...................................................................................................................................14
5System Configuration Example............................................................................................................15
6Precautions.........................................................................................................................................16
6.1 Installation....................................................................................................................................16
6.2 Cabling ........................................................................................................................................17
6.2.1 Cables..................................................................................................................................18
6.2.2 Twisted pair cable for extension............................................................................................19
6.2.3 Connecting RS-232C cable...................................................................................................20
6.2.4 Alarm....................................................................................................................................20
6.2.5 Connecting MAU-1616..........................................................................................................20
7Basic Operation...................................................................................................................................21
7.1 Channel switching mode..............................................................................................................21
7.2 Selecting I/O channel...................................................................................................................22
7.2.1 Selecting I/O channel in INPUT→OUTPUT mode.................................................................23
7.2.2 Selecting I/O channels in OUTPUT→INPUT mode................................................................24
7.3 Menu operation keys....................................................................................................................25
7.4Recalling preset memory..............................................................................................................26
7.5 Key function lock..........................................................................................................................27
7.6 Initialization..................................................................................................................................28
7.7 Control from WEB browser...........................................................................................................32
7.7.1 How to use WEB menu.........................................................................................................33
7.7.2 Operations only settable from WEB menu.............................................................................34
8Menu...................................................................................................................................................38
8.1 Menu list......................................................................................................................................38
8.2 Input setting.................................................................................................................................39
8.2.1 No-signal input monitoring time.............................................................................................39
8.2.2 Input HDCP setting...............................................................................................................40
8.3 Output setting...............................................................................................................................41
8.3.1 Output mode.........................................................................................................................41
8.3.2 Output mode for EDID error..................................................................................................42
8.3.3 Hot plug ignoring duration.....................................................................................................42
8.4 Audio...........................................................................................................................................43
8.4.1 Digital audio output...............................................................................................................43
8.5 EDID............................................................................................................................................44
8.5.1 EDID resolution ....................................................................................................................45
8.5.2 Copying EDID.......................................................................................................................48
8.5.3 Loading EDID channel..........................................................................................................48
8.5.4 Deep Color input...................................................................................................................49
8.5.5 Audio channel.......................................................................................................................50
8.5.6 Linear PCM Audio.................................................................................................................51
8.5.7 AC-3 Dolby Digital Audio.......................................................................................................51
8.5.8 AAC Audio............................................................................................................................52

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8.5.9 Dolby Digital Plus Audio........................................................................................................52
8.5.10 DTS Audio............................................................................................................................53
8.5.11 DTS-HD Audio......................................................................................................................53
8.5.12 Dolby TrueHD Audio.............................................................................................................54
8.5.13 WXGA..................................................................................................................................54
8.6 RS-232C settings.........................................................................................................................55
8.6.1 RS-232C ..............................................................................................................................55
8.7 LAN settings ................................................................................................................................56
8.7.1 IP address............................................................................................................................56
8.7.2 Subnet mask ........................................................................................................................56
8.7.3 TCP port...............................................................................................................................57
8.7.4 Viewing MAC address...........................................................................................................58
8.8 Preset memory.............................................................................................................................58
8.8.1 Recalling cross point.............................................................................................................58
8.8.2 Saving cross point ................................................................................................................59
8.8.3 Editing cross point ................................................................................................................60
8.8.4 Start-up status......................................................................................................................61
8.9 Other settings...............................................................................................................................62
8.9.1 Grouping keys for key function lock.......................................................................................62
8.9.2 Operation sound...................................................................................................................62
8.9.3 Power saving........................................................................................................................63
8.9.4 Alarm....................................................................................................................................64
8.9.5 Top page..............................................................................................................................65
8.9.6 Viewing input signal status....................................................................................................67
8.9.7 Viewing sink device status....................................................................................................67
8.9.8 Viewing slot board status......................................................................................................68
8.9.9 Viewing cooling fan status.....................................................................................................69
8.9.10 Viewing power-supply voltage...............................................................................................70
8.9.11 Viewing system status ..........................................................................................................71
8.9.12 Viewing firmware and hardware versions..............................................................................72
9Product specification ...........................................................................................................................73
10 Troubleshooting...................................................................................................................................75

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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) FDX-12UHD main unit
Cable clamps*
*Depends on the number of slot boards
Two (2) rack mounting brackets
One (1) 2-pin terminal block
One (1) power cord 5.9 ft. (1.8 m)
[Fig. 1.1] Included items

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2 Product outline
The FDX-12UHD (hereafter referred to as “FDX”) is a digital matrix switcher having 12 inputs / 12 outputs,
supporting up to 4K@60 and HDCP2.2.
Since the FDX supports combinations of digital slot boards and HDBaseT slot boards, the system can be
simplified.
The FDX has RS-232C and LAN for an external control communication port. Digital video and analog audio
can be switched separately using MAU-1616 (optional audio matrix switcher).
FDX-12UHD
inputs/1 slot board
4
4K HDBaseT input slot board outputs/1 slot board
4K HDBaseT output slot board
4
Digital video/audio/
communication for
extension
HDBaseT
Digital video/audio/
communication for
extension
HDBaseT
Receiver
EDID emulator
Transmitter
Up to outputs/3 slot boards
12
Up to inputs/3 slot boards
12
Video/audio
matrix
switch
12IN-12OUT
・Input slot board: Can be added by 4 inputs
・Output slot board: Can be added by 4 outputs
inputs/1 slot board
4
4K digital input slot board
Digital video/audio
HDMI DVI
EDID emulator
outputs/1 slot board
4K digital input slot board
4
Digital video/audio
HDMI DVI
Up to 98 ft.
(30 m)*
Up to 328 ft.
(100 m)
Up to 98 ft.
(30 m)*
Up to 328 ft.
(100 m)
Receiver Transmitter
*Maximum extension distance
1080p@60: 98 ft. (30 m)
4K@60: 39 ft. (12 m) (when 18 Gbps high-speed cable is used)
[Fig. 2.1] I/O diagram
4K digital input slot board
One 4K digital input slot board includes four HDMI connectors.
DVI signals can be input to HDMI connectors (conversion cable is necessary).
4K HDBaseT input slot board
One 4K HDBaseT input slot board includes four RJ-45 connectors.
Digital signals (Audio/Video) can be transmitted up to 328 ft. (100 m) by using with HDC-T series
products.
4K digital output slot board
One 4K digital output slot board includes four HDMI connectors.
The HDMI connector outputs video and audio of the selected input channel.
4K HDBaseT output slot board
One HDBaseT output slot board includes four RJ-45 connectors.
The RJ-45 connector outputs video and audio of the selected input channel.
Digital signals (Audio/Video) can be transmitted up to 328 ft. (100 m) by using with HDC-R series
products.
Note:
I/O slot boards for the FDX cannot be used for other products and vice versa.

FDX-12UHD User’s Guide
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3 Feature
■
Video
・Up to 4K@60 (4:4:4)*
・HDCP 1.4 / 2.2
・Maximum extension distance (4K digital input / output slot board)
1080p@60: 98 ft. (30 m)
4K@60: 39 ft. (12 m) (when 18 Gbps high-speed cable is used)
・Up to 328 ft. (100 m) over a Cat6 cable
・Anti-Snow
・HDR
・3D
・x.v.Color
・The number of I/Os is customizable by 4 inputs or 4 outputs
* 4K HDBaseT I/O slot board: Up to 4K@60 (4:2:0)
[Fig. 3.1] Combination example of slot boards
■
Control input
・RS-232C, LAN
■
Others
・EDID emulation
・Audio breakaway enables independent audio and video switching (Audio unit MAU-1616 is
required (Optional)
・I/O slot board, CPU slot board, and fan unit can be replaced without taking off the unit from rack
mount
・Instant Alert output (Power unit monitoring, Fan unit monitoring, Temperature monitoring)
・Startup memory
・Preset memory
・Last memory
・Connection Reset
・Security lock
・Viewing system status
・All function settings through browser
・Redundant power supply unit (optional)
・RS-232C transmission (4K HDBaseT input / output slot board)

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4 Panels
4.1 Front panel
⑩
⑤
①
⑪
⑨
⑥
⑦
⑧
④
③
②
[Fig. 4.1] Front panel drawing
[Table 4.1] Front panel features
#
Feature
Description
①
POWER switch
Powers ON / OFF the FDX.
②
LCD screen
Displays menus and settings.
③
MENU/SET key
Selects menus and edits / controls / saves settings.
Applies the setting.
④
ESC key Ends the current menu setting.
⑤
Arrow keys (▲, ▼, ◄, ►) Switch menu, moves cursor, and changes setting values.
⑥
SWITCHING MODE key Selects a switching mode V&A (FDX and MAU-1616), VIDEO
(only FDX),
AUDIO (only MAU-1616) for when I/O channel is switched.
⑦
Switching direction
selection key Selects a switching direction (INPUT→OUTPUT or OUTPUT→INPUT) when channels are being set.
⑧
Input channel selection keys Selects the input channel.
Selects a preset memory number when ⑩(PRESET LOAD key) is
enabled.
⑨
Output channel selection keys Selects output channels.
⑩
PRESET LOAD key Moves to the menu for recalling preset memory.
⑪
I/O channel status display Display selected I/O channels.

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4.2 Rear panel
⑥
①
②
③
④
⑤⑦ ⑧ ⑨ ⑩⑪
[Fig. 4.2] Rear panel drawing
[Table 4.2] Rear panel features
# Feature Description
①HDMI input connector Input connectors for HDMI and DVI signals to interface source
devices, such as Blu-ray® players.
②
HDBaseT input connector
Digital signals (Audio/Video) can be transmitted up to 328 ft. (100
m) by using with HDC-T series products.
③
HDMI output connector
Output connector for HDMI and DVI signal interfaces with sink
devices such as LC monitors and projectors.
④HDBaseT output connector Digital signals (Audio/Video) can be transmitted up to 328 ft. (100
m) by using with HDC-R series products.
⑤
RS-232C connector
For external control by communication commands.
⑥
LAN connector
For external control by communication commands or web
browsers.
⑦Maintenance connector Factory use only.
⑧ALARM connector By using a 2-pin terminal block, problems in cooling fans, I/O slot
boards, supply voltage, and internal temperature can be detected.
【See: 1 Included items
】
【See: 6.2.4 Alarm
】
【
See: 8.9.4 Alarm】
⑨
OPTION connector
Connector for MAU-1616 (optional).
Connect the provided bus cable.
When no MAU-1616 is used, do not connect any cable.
⑩
AC power inlet
For using with provided power cable.
⑪Frame ground Use for bonding chassis to local ground.
An M4 screw is used.

FDX-12UHD User’s Guide
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5 System Configuration Example
RS-232C signal can be transmitted using mounted 4K HDBaseT slot board. In the figure below, the FDX
controls devices that are connected to HDC series products over RS-232C.
HDMI
Blu-ray player
Projector
4K monitor
PC
Digital input
connection
Camera
PC
HDBaseT input
connection
DVI
HDMI
Digital output
connection
DVI
Projector
4K monitor
HDBaseT output
connection
PC
Video/audio input
External device
Video/audio output
Speakers
Audio output
FDX-12UHD
HDMI/DVI conversion cable
DVI cable
Cat5e/Cat6 cable
RS-232C cable
Provided bus cable (D-Sub25-pin straight cable)
RCA cable
RS-232C
LAN
Analog audio
output
MAU-1616
HDC-T
Analog audio
input
Audio input
CD player
HDC-R
HDMI
HDMI
HDMI cable
RS-232C
RS-232C
HDMI/DVI
HDMI/DVI
[Fig. 5.1] Configuration example

FDX-12UHD User’s Guide
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6 Precautions
Before connecting to external devices, follow the precautions below.
6.1 Installation
When installing the FDX, please observe the following precautions.
●Do not block vent holes. To provide adequate ventilation, maintain sufficient clearances around the
FDX 1.18 in. (30 mm) or more.
●When the FDX needs to be mounted in an EIA rack, or an enclosed space, ensure that sufficient
ventilation or cooling is provided and that the ambient temperature will not exceed 40°C / 104°F. If
inadequately vented, the product’s service life, operation and reliability may be affected.
■Attaching rack mounting brackets
1. Remove four M5 screws from one side of the unit. Retain these screws for step 2.
2. Attach one bracket to the side of the unit using the screws removed in step 1.
3. Repeat steps 1 and 2 on the other side of the unit.
[Fig. 6.1] Attaching rack mounting brackets
Note:
The standard screw tightening torque is 2.94 N･m (about 30 kgf･cm).
M5-screws
Unit
M5-screws

FDX-12UHD User’s Guide
17
6.2 Cabling
When connecting the FDX to external devices, please observe the following precautions.
・Read manuals for the external devices.
・Before you connecting cables to the FDX or an external device, dissipate static electricity by touching
grounded metal such as racks before handling signal cables. Failure to observe this precaution may
result in ESD (electrostatic discharge) damage.
・Power all units off before connecting cables.
・Be sure to fully seat all plugs and connections and dress cables to reduce stress on connectors.
・Secure HDMI cables using cable clamps to prevent connectors from being accidently pulled out of ports.
[Fig. 6.2] Attaching cable clamp
Fixing HDMI cable
using cable clamp
Removing HDMI cable
and cable clamp
①②③
Pull out while pressing
④
② ④ ⑤① ③
Click

FDX-12UHD User’s Guide
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6.2.1 Cables
IDK has a large selection of flexible HDMI cables, DVI cables, high-quality long cables, and conversion
cables.
Use the correct cable depending on the system configuration.
For analog audio and RS-232C, select or fabricate cables to match the connectors as needed.
For 4K format video, the maximum TMDS data rate (transmission speed) is 18 Gbps. If a high-speed HDMI
cable that supports up to 10.2 Gbps rate is used, video cannot be displayed stably. Select an appropriate 18
Gbps high-speed cable depending on the 4K format.
The maximum distance may change depending on cable type and characteristics of source and sink devices.
[Table 6.1] 18 Gbps high-speed cable for 4K format
TMDS data rate (Gbps)
RGB, YCbCr 4:4:4 YCbCr 4:2:2 YCbCr 4:2:0
4K format 24 bit 30 bit 36 bit 24 bit 30 bit 36 bit 24 bit 30 bit 36 bit
3840x2160p (24 / 25 / 30) 10.2
Gbps 18
Gbps
18
Gbps
10.2
Gbps
10.2
Gbps
10.2
Gbps
－－－
4096x2160 (24 / 25 / 30) 10.2
Gbps 18 Gbps 18
Gbps 10.2 Gbps 10.2 Gbps 10.2 Gbps
－ － －
3840x2160p (50 / 59.94 / 60) 18 G
bps
－
－
18
Gbps 18 Gbps 18 Gbps 10.2 Gbps 18 Gbps 18 Gbps
4096x2160 (50 / 59.94 / 60) 18
Gbps
－－18
Gbps 18 Gbps 18 Gbps 10.2 Gbps 18 Gbps 18 Gbps
18 Gbps: 18 Gbps high-speed cable, 10.2 Gbps: 10.2 Gbps cable, －: N/A
Notes:
・If connecting an HDC series product in order to transmit DVI signals that are protected by HDCP,
use IDK’s HDBaseT cable extender supporting DVI signals.
・If a cable is extended and a cable joint (JJ) is used, video may be interrupted or may not be output.

FDX-12UHD User’s Guide
19
6.2.2 Twisted pair cable for extension
To ensure the best performance of twisted pair cables, select a correct twisted pair cable and connect it
correctly.
●Cat5e UTP/STP and Cat6 UTP/STP can be used, but we recommend CAT.5E HDC cable* for optimal
performance.
●If using an STP cable, connect the FG connector to a 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.
●Connectors for long-haul extension are the same as that of eight-core modular connector used for
Ethernet, but the transmission system is not the same so that it cannot be connected to Ethernet.
●The maximum extension distance of a twisted pair cables is the shorter distance of the maximum
extension distances of transmitter/receiver/sink device connected to the FDX.
●Pin assignments: T568A or T568B straight
●Do not pull the cable hard. 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 larger.
●Do not tie the cable tightly; leave a space allowing the cable to move slightly.
●If you use multiple twisted pair 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 the cable in an electrically noisy environment, since high-speed signals are transmitted.
Particularly when you use a high-output radio around the FDX, video or audio may be interrupted.
●If the total extension distance from the transmitter to receiver is 328 ft. (100 m) or less, up to two cable
joints can be used. Products supporting Cat6A (10GBase-T) are recommended.
●The table below shows supported extension distance for each twisted pair cable category. Note that the
distance may shorten depending on the actual environment.
[Table 6.2] Twisted pair cable extension distance
Noise
Type
Extension
TMDS clock
Recommended cable
Easily
affected
UTP
Cat5e
164 ft.
(50 m)
≦
225 MHz
164 ft. (50 m) or longer:
Cat5e STP, Cat6 UTP / STP,
CAT.5E HDC*
Cat6
328 ft.
(100 m)
230 ft.
(70 m)
> 225 MHz
(4K format)
4K 230 ft. (70 m) or longer:
Cat5e STP, Cat6 STP,
CAT.5E HDC*
Less
affected
STP
Cat5e*
Cat6
328 ft.
(100 m)
* The CAT.5E HDC cable is a double-shielded twisted pair cable that optimizes video signal transmission of
IDK’s HDC series product (twisted pair cable extenders and splitters), MSD and FDX series products
(products with extending function).
The CAT.5E HDC cable is certified to 500 MHz bandwidth at distance up to 330 feet (100 m) and verified to
meet requirements specified by HDBaseT Alliance. The double-shielded structure protects video signal from
outside interference. In order to maximize the performance of the CAT.5E HDC cable, use IDK’s transmitters
and receivers with STP’s RJ-45 connector and keep the cable grounded.
Note:
If there is a problem in the transmission path, video and audio may be interrupted. Please check the items
above. If the problem still cannot be solved, shorten the length of the twisted pair cable.

FDX-12UHD User’s Guide
20
6.2.3 Connecting RS-232C cable
For RS-232C ports, 9-pin D-sub male pin is used.
Use a cross cable to connect the FDX to PC.
D-sub 9-pin, male
15
RS-232C connector
69
RxD
TxD
N.C.
DTR
DSR
N.C.
GND
RTS
CTS
Pin #
1
3
2
4
6
5
7
9
8
Signal
（Receiving data）
（Sending data）
（Ground）
（Sending request）
（Receiving request)
（Not used）
（Not used）
（Not used）
（Not used）
[Fig. 6.3] 9-pin D-sub connector, male
6.2.4 Alarm
Connect the provided 2-pin terminal block to the ALARM connector in order to detect problems in the cooling
fan, I/O slot boards, power supply voltage, and internal temperature.
AWG28 to AWG16 conductor gauge is recommended. The recommended wire strip length is 0.28 in. (7 mm).
Up to 0.28"(7 mm)
[Fig. 6.4] Connecting 2-pin Terminal block
6.2.5 Connecting MAU-1616
Connect the bus cable that is provided with the MAU-1616 to the OPTION connector in order to use the
MAU-1616, a matrix switcher that switches audio separately.
See “MAU Series (MAU-1616 / MAU-3232) User’s Guide” for details of the MAU-1616.