IDK IMP-400UHD User manual

4K＠60 and HDCP2.2 supported 4 x 1 HDMI Switcher
IMP-400UHD
<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

IMP-400UHD User’s Guide
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Trademarks
●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.
●Blu-ray Disc and Blu-ray are trademarks of Blu-ray Disc Association.
●Anti Snow and Connection Reset are registered trademarks of IDK 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.

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Before reading this manual
●All rights reserved.
●Some of the contents in this user’s guide such as the appearance of diagrams, menu operations,
communication commands, and so on may differ between products depending on the specific version.
●This Users guide is subject to change without notice. You can download the latest version from IDK’s
website at: http: //www.idkav.com
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 equipmentin 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 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

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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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For rack mount devices:
Instruction
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.
For devices with rubber feet:
Instruction
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 originally supplied rubber feet using only the originally supplied screws.
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.
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 humid, oil smoke filled, or dusty 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 objects 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 therisk of fire and electric shock.
Use only the supplied AC adapter and power cable.
Do not use the supplied AC adapter and power cable with other products.
If non-compliant adapter or power cables are used, it may increase the risk of fire or electrical shock. Always
use the supplied AC power connection cable for this product.
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.
Turn off devices while making connections to another device.
Failure to observe this precaution may increase the risk of fire or electric 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 installation
Caution

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Table of Contents
1Included Items....................................................................................................................................... 9
2Product Outline ....................................................................................................................................10
3Features...............................................................................................................................................11
4Panels..................................................................................................................................................12
4.1 Front panel.....................................................................................................................................12
4.2 Rear panel .....................................................................................................................................13
5Application example.............................................................................................................................14
6Precautions..........................................................................................................................................15
6.1 Attaching Rubber feet.....................................................................................................................15
6.2 Installation......................................................................................................................................15
6.3 Cabling...........................................................................................................................................16
6.3.1 Cables ....................................................................................................................................17
6.3.2 Connecting audio cables.........................................................................................................18
6.3.3 Connecting RS-232C cable.....................................................................................................18
6.3.4 5V Power output / Contact input / Tally output .........................................................................19
6.3.5 AC adapter with screw lock mechanism...................................................................................22
7Basic Operation....................................................................................................................................23
7.1 Power up init period........................................................................................................................23
7.2 Selecting input channels.................................................................................................................23
7.3 Locking and Unlocking input channel selection keys.......................................................................24
7.4 Setting sequence switching mode...................................................................................................24
7.5 Initialization....................................................................................................................................25
8Settings................................................................................................................................................27
8.1 Input settings..................................................................................................................................27
8.1.1 Non-signal input monitoring.....................................................................................................27
8.1.2 Input HDCP settings................................................................................................................28
8.2 Switching settings...........................................................................................................................29
8.2.1 Priority of input channel automatic switching............................................................................29
8.2.2 Masking time after automatic switching....................................................................................31
8.2.3 Sequence switching mode.......................................................................................................31
8.2.4 Target channels for Sequence switching mode........................................................................33
8.2.5 Switching interval of Sequence switching mode.......................................................................33
8.2.6 Input detection ........................................................................................................................33
8.2.7 Start channel of sequence switching mode..............................................................................33
8.3 Output settings...............................................................................................................................34
8.3.1 Output mode...........................................................................................................................34
8.3.2 Checking Sink device’s EDID ..................................................................................................35
8.3.3 HDCP re-authentication...........................................................................................................35
8.4 Audio settings.................................................................................................................................36
8.4.1 Mute .......................................................................................................................................36
8.5 Contact input..................................................................................................................................36
8.5.1 Chattering reduction................................................................................................................36
8.6 EDID..............................................................................................................................................37
8.6.1 EDID resolution.......................................................................................................................37
8.6.2 Deep Color..............................................................................................................................40
8.6.3 Audio format............................................................................................................................40
8.6.4 Speaker configuration .............................................................................................................41

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8.6.5 Copying EDID.........................................................................................................................42
8.7 RS-232C........................................................................................................................................42
8.7.1 Setting RS-232C.....................................................................................................................42
8.8 LAN................................................................................................................................................43
8.8.1 Setting IP Address / Subnet mask ...........................................................................................43
8.8.2 Setting TCP port number.........................................................................................................43
8.8.3 Displaying MAC address.........................................................................................................43
8.9 Startup settings..............................................................................................................................44
8.9.1 Start-up input channel.............................................................................................................44
8.9.2 Keylock at startup....................................................................................................................45
8.10 Other settings.................................................................................................................................46
8.10.1 Keylock mode .........................................................................................................................46
8.10.2 Buzzer tone.............................................................................................................................46
8.11 Displaying status............................................................................................................................47
8.11.1 Input signal status...................................................................................................................47
8.11.2 Sink device status...................................................................................................................48
8.11.3 Displaying sink device EDID....................................................................................................49
8.11.4 Displaying version...................................................................................................................50
9Communication Specification and Setup...............................................................................................51
9.1 RS-232C communication................................................................................................................51
9.1.1 Connecting RS-232C cable.....................................................................................................51
9.1.2 RS-232C communication specification.....................................................................................51
9.1.3 Setting up RS-232C communication........................................................................................52
9.2 LAN communication.......................................................................................................................53
9.2.1 LAN connector specification....................................................................................................53
9.2.2 LAN communication specification............................................................................................53
9.2.3 Setting up LAN communication................................................................................................54
9.2.4 The number of TCP-IP connections.........................................................................................55
10 Product Specification............................................................................................................................56
11 Troubleshooting ...................................................................................................................................58

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1 Included Items
Ensure that all items illustrated below are included in the package.
If any items are missing or damaged, please contact IDK.
One (1) main unit (IMP-400UHD)
One (1) AC adapter with screw lock
Five (5) cable clamps
One (1) 5-pin terminal block
Seven (7) 3-pin terminal blocks
Four (4) rubber feet
[Figure 1.1] Included items

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2 Product Outline
The IMP-400UHD is a 4x1 HDMI signal switcher supporting 4K@60 video signal and HDCP2.2.
Digital audio signal is converted into analog and output from the AUDIO OUTPUT connector.
Settings can be set remotely using RS-232C and LAN ports.
Contact inputs / tally outputs enable the IMP-400UHD to be controlled from the PC I/O board and a control
box.
EDID emulator
IMP-400UHD
Analog audo
L/R Balanced / Unbalanced
Output
1
Up to 98.4 ft. (30 m)*
Digital video/audio
HDMI DVI Inputs
4
Digital video/audio
HDMI DVI Output
1
Video・Audio
switch
*Maximum cable distance
1080p@60: up to 98.4 ft. (30 m)
4K@60: up to 39.4 ft. (12 m) when 18 Gbps high-speed transmission cable is used.
Video / Audio
Audio
D/A
conversion
Up to 98.4 ft. (30 m)*
[Figure 2.1] Diagram

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3 Features
■Video
・Up to 4K@60 (4:4:4)
・HDCP 1.4 / 2.2
・HDR / 3D / x.v.Color
・Maximum cable distance
1080p@60: up to 98.4 ft. (30 m)
4K@60: up to 39.4 ft. (12 m) (18 Gbps high-speed transmission cable is used)
・Anti-Snow
■Audio
・Analog audio de-embedded
■Control input
・RS-232C, LAN, Contact input
■Others
・EDID emulation
・Automatic input detection and switching
・DDC buffer
・Last memory
・Connection Reset
・Operation lock
・Locking mechanism for AC adapter

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4 Panels
4.1 Front panel
① ② ③ ④ ⑤
[Figure 4.1] Front panel drawing
[Table 4.1] Front panel features
#
Feature
Description
①
POWER LED
Shows power status of the IMP-400UHD.
Illuminating (green): Powered ON.
Does not illuminate: Powered OFF.
②
LOCK LED
Shows lock status of input channel selection keys.
Illuminating (green): Being locked.
Does not illuminate: Lock is released.
【See: 7.3 Locking and Unlocking input channel selection keys
(P.24) 】
③
SEQUENCE LED
Shows execution status of sequence switching mode.
Illuminating (green): Being executed.
Does not illuminate: The switching mode is released.
【See: 7.4 Setting sequence switching mode (P.24)】
④
Input channel selection
keys
Selects input channels.
【See: 7.2 Selecting input channels (P.23) 】
⑤
INPUT SIGNAL LED
Shows input detection of video signal.
Illuminating (yellow): Video signal is input.
Does not illuminate: No video signal is input.

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4.2 Rear panel
③ ①
⑩ ⑪
④ ⑧ ⑦ ⑨ ⑥ ⑤
②
[Figure 4.2] Rear panel drawing
[Table 4.2] Rear panel features
#
Feature
Description
①
HDMI input connectors
For HDMI and DVI signals to interface source devices, such as
Blu-ray® players.
②
HDMI cable fixing holes
Retains HDMI cables by inserting cable clamps.
【See: [Figure 6.1] Attaching a cable clamp (P.16) 】
③
HDMI output connector
For HDMI and DVI signal interfaces with sink device such as LC
monitor and projector.
④
AUDIO OUTPUT
connector
Analog audio output connector interfaces to amplifier, speaker, or
mixer.
Digital audio signal that is input from an HDMI input connector will
be converted and output.
⑤
LAN port
For external control using communication commands.
⑥
RS-232C port
For external control using communication commands.
【See: 6.3.3 Connecting RS-232C cable (P.18) 】
⑦
Contact input / Tally output
connectors
Contact input / Tally output connector.
For external control using a switch box or the like.
【See: 6.3.4 5V Power output / Contact input / Tally output (P.19) 】
⑧
5V power output connector
For external Tally LED or the like.
【See: 6.3.4 5V Power output / Contact input / Tally output (P.19) 】
⑨
Maintenance port
Factory use only.
⑩
AC power inlet
For use with provided power cable.
【See: 6.3.5 AC adapter with screw lock mechanism (P.22) 】
⑪
Frame ground
For bounding chassis to local ground. An M4 screw is used.

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5 Application example
Source and sink devices are connected to the IMP-400UHD.
Blu-ray player
Speakers
Power amplifier
Analog audio
Contact input
Blu-ray player Blu-ray player Blu-ray player
HDMI / DVI
Up to 39 ft. (12 m)* LAN
4K Monitor Controller
PC
Tally output
Power output
HDMI / DVI
Up to 39 ft. (12 m)* HDMI / DVI Up to 39 ft. (12 m)* HDMI / DVI Up to 39 ft. (12 m)* HDMI / DVI Up to 39 ft. (12 m)*
*Maximum extension distance:
1080p@60: 98 ft. (30 m)
4K@60 : 39 ft. (12 m) (Only when IDK’s 18 Gbps cable is used.
[Figure 5.1] Application example

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6 Precautions
Before connecting to external devices, follow the precautions below.
6.1 Attaching Rubber feet
First, clean the bottom surface of the IMP-400UHD as needed, and then peal the release papers from the
rubber feet and place them in each of the four corners.
6.2 Installation
When installing the IMP-400UHD, please observe the following precautions.
●Do not stack or place one IMP-400UHD directly on top of another IMP-400UHD.
●Do not block vent holes. To provide adequate ventilation, maintain sufficient clearances around the
IMP-400UHD, 1.18 in. (30 mm) or more.
●When the IMP-400UHD 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 104°F
(40°C). If inadequately vented, the product’s service life, operation and reliability may be affected.

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6.3 Cabling
When connecting the IMP-400UHD to external devices, please observe the following precautions.
・Read manuals for the external devices.
・Before you connecting cables to the IMP-400UHD 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.
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

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6.3.1 Cables
If the video is 4K format, the TMDS data rate (transmission speed) is 18 Gbps at maximum. If a high-speed
HDMI cable, the TMDS data rate becomes 10.2 Gbps at maximum, and video cannot be displayed stably.
Use an 18 Gbps high-speed cable according to each 4K format.
The maximum distance varies depending on the cable type, characteristics of the source device and monitor;
the best cable for each format is recommended.
[Table 6.1] 18 Gbps high-speed cable for 4K format
18 Gbps: 18 Gbps high-speed transmission cable, 10.2 Gbps: 10.2 Gbps transmission cable, ―: N/A
Note:
If a cable joint (JJ) or the like is used and a cable is extended, video may be interrupted or not be output.
For analog audio and RS-232C, cables have to be processed.
【See: 6.3.2 Connecting audio cables (P. 18) 】
【See: 6.3.3 Connecting RS-232C cable (P. 18) 】
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
Gbps
―
―
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

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6.3.2 Connecting audio cables
Connect the audio cable to the 5-pin terminal block, and then insert the 5-pin terminal block into the
appropriate port on the IMP-400UHD’s rear panel.
The IMP-400UHD supports both balanced and unbalanced analog signals
AWG28 to AWG16 conductor gauge is recommended for optimal performance.
The recommended wire strip length is 7 mm/0.28 inch.
+
-
+
-
G
L
R
Lch +
Lch -
GND
Rch +
Rch -
Up to 0.28 in. (7 mm)
Balanced signal Unbalanced signal
-
+
-
+
G
L
R
Lch
GND
Rch
Up to 0.28 in. (7 mm)
[Figure 6.2] Connecting audio cable to 5-pin terminal block connector
Notes:
■The output level of balance signal connection is twice as much as that of unbalanced signal connection.
■When input level of digital audio is 0 dBFS, output levels of analog audio unbalanced and balanced signals
are 10 dBu and 16 dBu, respectively.
6.3.3 Connecting RS-232C cable
Connect the RS-232C cable to the provided 3-pin terminal block, and then insert it to the RS-232C connector.
AWG28 to AWG16 conductor gauge is recommended for optimal performance.
The recommended wire strip length is 7 mm/0.28 inch.
If connecting to the D-sub9, please short RTS, CTS, DTR, and DSR.
Tx
Rx
GND
RS-232C Tｘ
RS-232C Rx
GND
Up to 0.28 in. (7 mm)
[Figure 6.3] Connecting RS-232C cable to 3-pin terminal block connector

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6.3.4 5V Power output / Contact input / Tally output
The IMP-400UHD has contact input / tally output connector as external control interface which enables control
from PC’s I/O board and remote operation from a switch box.
A 5V power output connector is included for Tally LED.
[Figure 6.4] 5V Power output /Contact input / Tally output connectors
■Pin assignment
[Table 6.2] Pin assignments of 5V Power output /Contact input / Tally output connectors
Connector
Pin #
Terminal
Feature
5V OUT
1
LED300
DC 5 V output (with 300 Ωcurrent-limiting resistor)
2
LED75
DC 5 V output (with 75 Ωcurrent-limiting resistor)
3
VCC 5V
DC 5 V output (500 mA, rated)
IN1
C
Contact input
When 0V (GND) is input, IN1 will be selected.
G
GND
―
T
Tally output
When IN1 is selected, 0V (GND) is output.
IN2
C
Contact input
When 0V (GND) is input, IN2 will be selected.
G
GND
―
T
Tally output
When IN2 is selected, 0V (GND) is output.
IN3
C
Contact input
When 0V (GND) is input, IN3 will be selected.
G
GND
―
T
Tally output
When IN3 is selected, 0V (GND) is output.
IN4
C
Contact input
When 0V (GND) is input, IN4 will be selected.
G
GND
―
T
Tally output
When IN4 is selected, 0V (GND) is output.
OFF
C
Contact input
When 0V (GND) is input, OFF will be selected.
G
GND
―
T
Tally output
When OFF is selected, 0V (GND) is output.

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■Controlling contact input
Input channel of the IMP-400UHD can be switched remotely by using contact input.
Please ground the contact input terminal of the desired input channel to switch the input channel. After the
GND is connected, keep it back to the open state. If using a press-type switch to control contact input, select a
toggle type switch (pressing: ON; releasing: OFF).
If chattering makes the operation unstable, set the removing chattering time longer in “8.5.1 Chattering
reduction”.
5V
IN1 C
IN2 C
IN3 C
G
G
Press-type
switch
IN4 C
G
G
OFF C
G
IMP-400UHD
[Figure 6.5] Circuit example of contact input
Notes:
■Keep unused contact input terminals open.
■For electrical control, the range should be 0 V to 5 V±5 %.
■For controlling signal to contact input, please input pulse signal.