IDK OPF-TH2000 User manual

4K HDMI Fiber Optic Cable Extender
OPF-TH2000/OPF-RH2000
<User Guide>
Ver.1.5.0
O PTICAL Rx for HDMI
OPF-RH2000
DC 5V 3 A
FG
OUTPUT
HDMI
RS-232C
Rx
C LA SS 1 LA SER PRO D U C T
クラス 1 レーザ製品
OPTICAL
TXSIGNAL RX
POWER
LAN
STATUS
DIP-SW
O PTIC AL Tx fo r H DM I
OPF-TH2000
DC 5V 3 A
FG
INPUT
HDMI
RS-232C
Tx
C LA SS 1 LA SER PRO D U C T
クラス 1 レーザ製品
OPTICAL
TX
SIGNAL RX
POWER
LAN
STATUS
DIP-SW
Thank you for choosing our product.
To ensure the best performance of this product, please read this user guide fully and carefully before
using it and keep this manual together with the product for future reference as needed.
IDK Corporation

OPF-TH2000/OPF-RH2000 User Guide
2
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 Administrator, Inc. 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.

OPF-TH2000/OPF-RH2000 User Guide
3
Before reading this manual
All rights reserved.
Some information contained in this User guide such as exact product appearance, diagrams, menu
operations, and so on may differ depending on the product version.
This User 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 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.
The lasers in this product meet Class 1 Laser Safety per FDA/CDRH and
EN (IEC) 60825 laser safety standards which specifies design safety.
クラス 1 レーザ製品
CLASS 1 LASER PRODUCT

OPF-TH2000/OPF-RH2000 User Guide
4
Safety Instructions
Read and understand all safety and operating instructions before using this product. Follow all instructions
and heed all warnings/cautions.
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
Warning
Caution

OPF-TH2000/OPF-RH2000 User Guide
5
■For lifting heavy products:
Instruction
●Lifting must be done by two or more personnel.
To avoid injury: When lifting the product, bend your knees, keep your back straight and get close to it with two or
more persons.
■For installing and connecting products:
Prohibited
●Do not place the product upon a surface that may give way or that may become
unstable.
Install the product in a secure and stable place to prevent it from falling and possibly causing injury.
●Secure the product if installing in locations prone to vibration or movement.
Otherwise, it may move unexpectedly or it may fall and lead to injury.
Instruction
●Installation work must be performed by professionals.
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.
●Insert the power plug into an outlet that is unobstructed.
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.
●Unplug the product from the AC power source during installation or service.
When connecting peripheral devices to this product, unplug all involved devices from outlets. Ground potential
differences may cause fire or other difficulties.
■For operating products:
Prohibited
●Keep out any foreign objects.
To avoid fire or electric shock, do not permit foreign objects, such as metal and paper, to enter the product from
vent holes or other apertures.
●For power cable/ plug:
・
Do not scratch, heat, or modify, including splicing or lengthening them.
・
Do not pull, place heavy objects on them, or pinch them.
・
Do not bend, twist, tie or clamp 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
●Do not touch the product and connected cables during electrical storms.
Contact may cause electric shock
Instruction
●Clean the power plug regularly.
If the plug is covered in dust, it may increase the risk of firer.
Warning

OPF-TH2000/OPF-RH2000 User Guide
6
■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 by falling or having been dropped.
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

OPF-TH2000/OPF-RH2000 User Guide
7
■For installing and connecting products:
Prohibited
●Do not place the product in a location 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 store or operate 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 handle power plug 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 1.24 mi. (2,000 m) 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 rack meeting EIA standards, and maintain spaces above and below for air circulation. For
your safety as required, 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 originally supplied 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.
Instruction
●If cooling fan stops, power off the product and contact us.
Failure to do so may rise internal temperature and increase the risk of malfunction, fire, or electric shock.
●Clean the vent holes regularly.
If the vent holes of the cooling fan is covered in dust, internal temperature rises and it may increase the risk of
malfunction, fire, or electric shock.
Caution

OPF-TH2000/OPF-RH2000 User Guide
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Table of Contents
1Included items............................................................................................................................................ 9
2Precautions for shipping .......................................................................................................................... 10
3Product Outline ........................................................................................................................................ 11
4Features................................................................................................................................................... 12
5Panels ...................................................................................................................................................... 13
5.1 Transmitter.......................................................................................................................................... 13
5.2 Receiver.............................................................................................................................................. 14
6Precautions .............................................................................................................................................. 15
6.1 Installation........................................................................................................................................... 15
6.1.1 Installing on wall or ceiling .......................................................................................................... 15
6.2 Cabling................................................................................................................................................ 16
6.2.1 Cables ......................................................................................................................................... 16
6.2.2 Fiber optic cable.......................................................................................................................... 17
6.2.3 SFP+ optical transceiver ............................................................................................................. 17
6.2.4 LAN cable.................................................................................................................................... 18
6.2.5 RS-232C cable ............................................................................................................................ 18
6.2.6 AC adapter with screw locking mechanism ................................................................................ 18
6.2.7 Cascade connection.................................................................................................................... 19
6.3 Setting................................................................................................................................................. 19
6.3.1 Setting DIP switch ....................................................................................................................... 19
6.3.2 Setting input equalizer (only transmitter) .................................................................................... 20
6.4 Application example............................................................................................................................ 21
7Specification............................................................................................................................................. 22
7.1 Pin assignments.................................................................................................................................. 22
7.1.1 HDMI Type A connector.............................................................................................................. 22
7.1.2 RJ-45 connector.......................................................................................................................... 23
7.1.3 RS-232C connector..................................................................................................................... 23
7.2 Product specification........................................................................................................................... 25
8Troubleshooting ....................................................................................................................................... 26

OPF-TH2000/OPF-RH2000 User Guide
9
1 Included items
Ensure all items below are included in the package.
If any items are missing or damaged, please contact IDK.
■Transmitter
・OPF-TH2000 x1
・SFP+ optical transceiver x1 (MM/SM model only)
・AC adapter with screw locking mechanism (5.9 ft. (1.8 m)) x1
・Cable clamp x1
■Receiver
・OPF-RH2000 x1
・SFP+ optical transceiver x1 (MM/SM model only)
・AC adapter with screw locking mechanism (5.9 ft. (1.8 m)) x1
・Cable clamp x1
O PTIC AL Tx f o r H DM I
OPF-TH2000
DC 5 V 3A
FG
INPUT
HDMI
RS-232C
Tx
CL ASS 1 LASER PRO D U C T
クラス 1 レーザ製品
OPTI CAL
TX
SIGN AL RX
POWER
LAN
STATUS
DIP-SW
OPF-TH2000
O PTICAL Rx for HDM I
OPF-RH2000
DC 5 V 3A FG
OUTPUT
HDMI
RS-232C
Rx
CL ASS 1 LASER PRO DU C T
クラス 1 レーザ製品
OPTI CAL
TXSIGN AL RX
POWER
LAN
STATUS
DIP-SW
OPF-RH2000
SFP+ optical
transceiver
AC adapter with screw
locking mechanism
(5.9 ft. (1.8 m))
Cable clamp
[Fig. 1.1] Included items
Tip:
Dust caps are attached to SFP+ optical transceiver and the connector.
These caps will be used for shipping or repairing the OPF-H2000 unit.

OPF-TH2000/OPF-RH2000 User Guide
10
2 Precautions for shipping
The OPF-TH2000/OPF-RH2000 has an SFP+ optical transceiver that is vulnerable to damage caused by
mishandling during shipment if it is improperly packaged.
If, for any reason, you need to ship the device, remove the transceiver from the device and plug the dust cap
into the transceiver and the connector. Put the removed transceiver in an electrostatic bag with enough
cushion and keep the bag and device together in a box.
To install a transceiver:
Make sure the bale clasp is closed.
Line up the transceiver with the port and slide it into
the port until you hear a click.
Removing a transceiver:
Open the bale clasp and pull the transceiver out
of the port.
[Fig. 2.1] Removing and installing SFP+ optical transceiver
Note:
When installing the SFP+ transceiver, push it firmly and ensure that it is completely seated and the bale clasp
is locked. Do not open the bale clasp except for removing the transceiver.
RemovingInstalling
SFP+ transceiver
Bale clasp

OPF-TH2000/OPF-RH2000 User Guide
11
3 Product Outline
The OPF-H2000 is a transmitter and receiver set that enables HDMI signals to be transmitted long distance
over fiber optic cables.
The supported resolution can be up to 4K@30 or 4K@60 (4:2:0), the input signals are transmitted without
quality deterioration since they are not compressed or processed.
The OPF supports RS-232C bidirectional communication and LAN transmission.
■For multi-mode fiber
・Transmitter : OPF-TH2000-MM
・Receiver : OPF-RH2000-MM
■For multi-mode fiber
・Transmitter : OPF-TH2000-SM
・Receiver : OPF-RH2000-SM
The SPF+ optical transceiver can be
replaced depending on the fiber optic
cable.
●OPF-TH2000-MM
Multimode fiber
●OPF-TH2000-SM
Singlemode fiber
●OPF-RH2000-MM
Multimode fiber
●OPF-RH2000-SM
Singlemode fiber
<Transmitter>
<Receiver>
O PTICAL Rx for HDMI
OPF-RH2000
DC 5V 3A
FG
OUTPUT
HDMI
RS-232C
Rx
C LA SS 1 LA SER PRO DU C T
クラス 1 レーザ製品
OPTICAL
TX
SIGNAL RX
POWER
LAN
STATUS
DIP-SW
O PTIC AL Tx f o r H DM I
OPF-TH2000
DC 5V 3A
FG
INPUT
HDMI
RS-232C
Tx
C LA SS 1 LA SER PRO DU C T
クラス 1 レーザ製品
OPTICAL
TX
SIGNAL RX
POWER
LAN
STATUS
DIP-SW
[Fig. 3.1] OPF-H2000 series

OPF-TH2000/OPF-RH2000 User Guide
12
4 Features
■
Video
・Up to 4K@60 (4:2:0)
・HDCP 1.4 (Pass-through)
・Transmission distances
Multimode fiber (OM3) : 984 ft. (300 m)
Singlemode fiber (OS1) : 6.21 mi. (10 km)
■
Communication
・Bidirectional RS-232C
・LAN
■
Others
・CEC (Pass-through)
・AC adapter with locking mechanism
Projector
Blu-ray player
Laptop
HDMI
OPF-TH2000 (Transmitter)
OPF-RH2000 (Receiver)
LAN
RS-232C
LAN
RS-232C
HDMI
HDCP output
HDCP output
Fiber optic cable
Up to 16 ft. (5 m)
HDMI cable
O PTIC AL Tx f o r H DM I
OPF-TH2000
DC 5 V 3A FG
INPUT
HDMI
RS-232C
Tx
CL ASS 1 LASER PRO DUC T
クラス 1 レーザ製品
OPTI CAL
TXSIGN AL RX
POWER
LAN
STATUS
DIP-SW
O PTICAL Rx for HDM I
OPF-RH2000
DC 5 V 3A FG
OUTPUT
HDMI
RS-232C
Rx
CL ASS 1 LASER PRO DUC T
クラス 1 レーザ製品
OPTI CAL
TXSIGN AL RX
POWER
LAN
STATUS
DIP-SW
[Fig. 4.1] Application example

OPF-TH2000/OPF-RH2000 User Guide
13
5 Panels
5.1 Transmitter
①
②
③
⑧
④
⑦
⑤
⑨
⑩
⑪
⑥
O PTIC AL Tx f o r H DM I
OPF-TH2000
DC 5V 3A
FG
INPUT
HDMI
RS-232C
Tx
C LA SS 1 L ASER PRO D U C T
クラス 1 レーザ製品
OPTICAL
TXSIGNAL RXPOWER
LAN
STATUS
DIP-SW
[Fig. 5.1] Transmitter drawing
[Table 5.1] Transmitter features
# Feature Description
①
LAN connector
Connector for LAN signals
②
RS-232C connector
Connector for RS-232C signals
③
LED lights
POWER : Lights when power is supplied from the AC adapter.
SIGNAL : Lights when video signals are valid.
TX : Lights when a valid code is sent from the OPF.
RX : Lights when a valid code is received from the fiber optic cable
connected to the receiver.
④
Frame ground
Use for bonding chassis to local ground. M3 screws are used
⑤
Optical input connector
for extension
Input connector of digital optical signals for extension.
Connected to the optical output connector of receiver using a fiber optic
cable.
⑥
Optical output connector
for extension
Output connector of digital optical signals for extension.
Connected to the optical input connector of receiver using a fiber optic
cable.
⑦HDMI cable fixing hole Hole for the attached cable clamp to secure an HDMI cable.
⑧HDMI input connector Input connector for HDMI signals
Connect to a source device such as Blu-ray player.
⑨
DIP switch
Sets the +5V Power transmission of the transmitter.
【
See: 6.3.1 Setting DIP switch
】
⑩
AC adapter connector Connector for the supplied AC adapter
⑪Rotary switch Sets input equalizer.
【See: 6.3.2Setting input equalizer (only transmitter)】

OPF-TH2000/OPF-RH2000 User Guide
14
5.2 Receiver
①
②
③
⑧
④
⑦
⑤
⑨
⑩
⑥
O PT I C A L Rx f o r H D M I
OPF-RH2000
DC 5V 3A FG
OUTPUT
HDMI
RS-232C
Rx
C LA SS 1 L ASER PRO D U C T
クラス 1 レーザ製品
OPTICAL
TXSIGNAL RXPOWER
LAN
STATUS
DIP-SW
[Fig. 5.2] Receiver drawing
[Table 5.2] Receiver features
#
Feature
Description
①
LAN connector
Connector for LAN signals
②
RS-232C connector
Connector for RS-232C signals
③
LED lights
POWER : Lights when power is supplied from the AC adapter.
SIGNAL : Lights when video signals are valid.
TX : Lights when a valid code is sent from the OPF.
RX : Lights when a valid code is received from the fiber optic cable
connected to the transmitter.
④Frame ground Use for bonding chassis to local ground. M3 screws are used
⑤Optical input connector
for extension
Input connector of digital optical signals for extension.
Connected to the optical output connector of the transmitter using a fiber
optic cable.
⑥Optical output
connector for
extension
Output connector of digital optical signals for extension.
Connected to the optical input connector of the transmitter using a fiber
optic cable.
⑦
HDMI cable fixing hole
Hole for the attached cable clamp to secure an HDMI cable.
⑧
HDMI output connector
Output connector for HDMI signals
Connect to a sink device such as monitor.
⑨DIP switch Sets the following items: pre-emphasis and swing of TMDS signals in the
receiver, transmission response time of Hot Plug Detect, and clock speed
of Display. Data Channel signals.
【
See: 6.3.1 Setting DIP switch
】
⑩
AC adapter connector
Connector for the supplied AC adapter

OPF-TH2000/OPF-RH2000 User Guide
15
6 Precautions
Before connecting to external devices, follow the precautions below.
6.1 Installation
When installing the OPF-H2000, please observe the following precautions.
・Do not stack or place the OPF-H2000 directly on top of another OPF-H2000
・Do not block vent holes. To provide adequate ventilation, maintain sufficient clearances around the
OPF-H2000 (1.2 in. (30 mm) or more)
・When the OPF-H2000 needs to be mounted in an enclosed space or an EIA rack without using IDK’s rack
mounting hardware (RM-SF, RM-SH), ensure that a sufficient ventilation/cooling system is provided to
keep the ambient temperature at 104°F (40°C) or lower. If inadequately vented, the product’s service life,
operation, and reliability may be affected.
Maintain adequate clearances (1.2 in. (30 mm) or more) as shown below
Bad example
Good example
Good example
[Fig. 6.1] Necessary clearances
6.1.1 Installing on wall or ceiling
You can install the OPF-H2000 on a wall or ceiling using the optional mounting plate (FP-100).

OPF-TH2000/OPF-RH2000 User Guide
16
6.2 Cabling
When connecting the OPF-H2000 to external devices, please observe the following precautions.
・Read manuals for the external devices.
・Before connecting cables to the OPF-H2000 or an external device, dissipate static electricity by touching
grounded metal such as equipment 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.
② ④ ⑤① ③
Click
Securing HDMI cable using cable clamp
①②③
Removing HDMI cable and cable clamp
④
Pull out while pressing
[Fig. 6.2] Securing and removing cable clamp
6.2.1 Cables
Use the correct HDMI cable or HDMI-DVI conversion cable depending on the system configuration.

OPF-TH2000/OPF-RH2000 User Guide
17
6.2.2 Fiber optic cable
The OPF-H2000 can reach their full potential by selecting appropriate fiber optic cables for long-haul
extension and installing the cable correctly.
・Connect a fiber optic cable to the OPF-H2000 as follows:
Optical output connector of the transmitter & optical input connector of the receiver
Optical input connector of the transmitter & optical output connector of the receiver
・To polish connectors:
For SFP+ optical transceiver for multimode : PC polishing is recommended.
For SFP+ optical transceiver for singlemode : UPC polishing is recommended.
Note: APC polishing is not supported.
・Transmission distance varies depending on attenuation of the fiber, connector and other contact portions.
・Make sure not to exceed the allowable tension and bend radius of fiber optic cable or the performance of
the product and the life of the fiber optic cable may be affected.
・Plug the dust caps to both faces of the fiber optic cable when connecting the fiber optic cable and when not
in use
・Before inserting a fiber optic cable, make sure there is no damage or dirt on the end-face of the optical
connector. Clean up it or OPF-H2000 may not operate correctly.
Left : without dust cap
Right : with dust cap Before cleaning After cleaning
[Fig. 6.3] Dust caps [Fig. 6.4] Cleaning connector
6.2.3 SFP+ optical transceiver
The fiber type and transmission distance vary depending on the SFP+ optical transceiver.
[Table 6.1] Specification of standard SFP+ optical transceiver
* The lasers in these models meet class1.
・When no fiber optic cable is connected, plug dust caps.
・Do not use the SFP+ optical transceiver for other products. Also, do not connect fiber optic cables that is
connected to other products to the SFP+ optical transceiver or the SFP+ optical transceiver may be
damaged.
・If you need to replace the SFP+ optical transceiver, please contact us.
Item Multimode fiber Singlemode fiber
Wave length
850 nm (VCSEL laser*)
1310 nm (DFB laser*)
Max. transmission distance
OM3: 984ft. (300 m)
OS1: 6.21 mi. (10 km)
Receiver sensitivity (OMA)
@10.3Gbps
-11.1 dBm or higher -12.6 dBm or higher
Average Launch Power
-5 dBm to -1 dBm
-8.2 dBm to +0.5 dBm
Max. input power
+0.5 dBm
+0.5 dBm
Connector LC (Duplex)

OPF-TH2000/OPF-RH2000 User Guide
18
6.2.4 LAN cable
・1G bps Ethernet signals can be transmitted over a long distance.
・Use cables meeting 10Base-T/100Base-TX/1000Base-T specification.
【See: 7.1.2 RJ-45 connector】
6.2.5 RS-232C cable
・RS-232C signals (up to 115.2 Kbps) can be transmitted in duplex over a long distance.
・Use a cross cable or straight cable according to the connected devices.
【See: 7.1.3 RS-232C connector】
6.2.6 AC adapter with screw locking mechanism
The shapes of AC plugs with screw locking mechanism vary from country to country. The AC plug can be
removed from the AC adapter.
Removing AC plug:
Slide the AC plug (②) from the AC adapter while holding down the portion mentioned below (①)
①
②
[Fig. 6.5] Removing AC plug (Example: Plug type A)
Attaching AC plug:
Gently slide the AC plug into the AC adapter (③) until it clicks (④)
③
④
This tab should be fixed into
the part of the AC adapter.
Tab
[Fig. 6.6] Attaching AC plug (Example: Plug type A)

OPF-TH2000/OPF-RH2000 User Guide
19
6.2.7 Cascade connection
Distribution amplifiers and multi switchers that are HDCP compliant repeaters can be connected. However,
cascade connection is not available in the following cases:
・Repeater that only supports HDCP pass through (such as some switchers, boosters and so on) is
included
・Another set of OPF-TH/RH2000 (IDK’s fiber optic cable extender supporting HDCP signals)
6.3 Setting
Setting the DIP switch and input equalizer
6.3.1 Setting DIP switch
You can change the settings of the following items of the transmitter and receiver.
Transmitter : +5V power transmission method.
Receiver : Pre-emphasis and swing of TMDS signals, transmission response time of Hot Plug Detect,
and clock speed of Display. Data Channel signals.
Default: OFF (SW1 to SW4)
[Fig. 6.7] DIP switch
[Table 6.2] For transmitter
No. Function
1 +5V Power (pin18 HDMI connector): sets a transmission method.
OFF : The receiver will supply + 5V Power when + 5V Power signal was detected
by the transmitter.
ON : The receiver will supply +5V when the link between transmitter and receiver
was established, regardless of +5V that was input to the transmitter or not.
2
Not used
3
Not used
4
Not used

OPF-TH2000/OPF-RH2000 User Guide
20
[Table 6.3] For receiver
6.3.2 Setting input equalizer (only transmitter)
The HDMI signal input part has manual compensation circuit. Signal deterioration caused by cables can be
minimized by setting the amount of equalization according to the connected cable.
Default: 8
[Fig. 6.8] Setting input equalizer
No. Function
1 Sets pre-emphasis of the TMDS signals.
OFF : Equalizes up to 2.5 dB.
ON : No equalization
2 Sets the swing of the TMDS signals.
OFF : 13% amplification
ON : No amplification
3
Sets the response time of Hot Plug Detect transmission (pin19 HDMI connector).
OFF : Transmits the detection when the Hot Plug Detect signals of the sink device
continue to change for 0.1 second or longer.
ON : Transmits the detection when the Hot Plug Detect signals of the sink device
continue to change for 1 second or longer (for 0.9 second or shorter, it is not
transmitted).
4 Sets the clock speed of the Display. Data Channel (15 pin HDMI connector) signals.
OFF : Signals are output at 100 KHz from the receiver.
ON : Signals are output at 75KHz from the receiver.
Switch
Equalizer
0
Minimum
～
8
(Default)
～
F
Maximum