VLHDMICTL1-MME - Controller Vivolink - Free user manual and instructions

Product Type	In-line HDMI Controller
Model	VLHDMICTL1-MME
Brand	Vivolink
Maximum Video Resolution	4Kx2K@60Hz 4:4:4 8bit
HDMI Standard	2.0
HDCP Version	2.2 (pass-through or convert to 1.4)
Bandwidth	18 Gbps
Down-scaling	4K to 1080P
EDID Management	8 built-in options via DIP switch + user-defined
Control Methods	CEC, RS232, IR, Contact Closure, Relay
Video Input	1x HDMI (female type-A)
Video Output	1x HDMI OUT/CEC (female type-A)
Control Ports	RS232 (3-pin terminal block), IR OUT (3.5mm), Sensor (3-pin), Relay 1&2 (3-pin), FW (USB type-A)
Power Supply	Input: 100-240V AC, Output: 5V DC 1A
Power Consumption	2.5W (max)
Dimensions (W x H x D)	120mm x 28mm x 84mm
Net Weight	305g
Operating Temperature	-5°C to +55°C
Storage Temperature	-25°C to +70°C
Relative Humidity	10% to 90%
Supported HDMI Cable Length	1080P@60Hz ≤ 10m, 4K@60Hz ≤ 5m
Package Contents	Controller, power adapter, RS232 cable, mounting ears, plastic cushions, terminal blocks, user manual
Features	Auto display control, CEC pass-through, IR learning, relay control, signal equalizer
Safety Compliance	FCC Class B
Warranty	3 years limited warranty (see manual for details)
Repairability	Refer servicing to qualified personnel; no user-serviceable parts

Frequently Asked Questions - VLHDMICTL1-MME Vivolink

How do I set the EDID for my display?

Use the 4-pin DIP switch on the front panel. Switches 1-3 select the EDID mode (e.g., 001 for 1080P with 2CH audio). See the table on the product or manual for all options. Switch 4 sets HDCP mode (ON for Active, OFF for Passive).

How can I control the display automatically?

The controller can send CEC, RS232, or IR commands when it detects a video or IR signal (SYSTEM ON) or when signals are lost (SYSTEM OFF). Configure these via RS232 commands or learn IR commands using the front panel SET button.

What is the maximum supported video resolution?

The controller supports up to 4Kx2K@60Hz 4:4:4 8bit with HDR10 and Dolby Vision. It can also down-scale 4K to 1080P for compatibility with older displays.

How do I connect external sensors or switches?

Use the Sensor 3-pin terminal block on the rear panel. This allows connection to external contact closure devices like occupancy sensors or switches to trigger system ON/OFF.

How can I program the IR commands for my display?

Press the SET button on the front panel to enter IR learning mode. The DISPLAY ON or DISPLAY OFF LED will flash. Point your IR remote at the sensor and press the desired button. The LED will stop flashing and remain lit when learned. For user-defined IR, press and hold SET for 5 seconds.

What should I do if the HDMI output shows no video or color loss?

Check that HDMI cables are securely connected and not damaged. Ensure the source is outputting a compatible resolution. Try a different HDMI cable. If the issue persists, verify the EDIP setting matches your display's capabilities.

How do I reset the controller to factory defaults?

Send the RS232 command RST. (including the period) via the RS232 port. The controller will reset all settings to factory default and reboot.

Can I use this controller with a video projector?

Yes, it is designed for projectors and displays in meeting rooms. It supports relay control for projection screens and RS232/IR commands for turning projectors on/off.

What is the power consumption and how is it powered?

The controller consumes a maximum of 2.5W. It is powered via the included 5V DC 1A power adapter (input 100-240V AC).

How do I enable or disable the 4K to 1080P down-scaling?

Use the RS232 command DOWNSCALER[X]. where X is 1 to enable or 0 to disable. The default is disabled. You can check the status with GDOWNSCALER.

USER MANUAL VLHDMICTL1-MME Vivolink

18G In-line HDMI Controller with Auto Display Control

All Rights Reserved

Version: VLHDMICTL1-MME_2019V1.0

Preface

Read this user manual carefully before using the product. Pictures shown in this manual are for reference only. Different models and specifications are subject to real product.

This manual is only for operation instruction, please contact the local distributor for maintenance assistance. The functions described in this version were updated till January, 2019. In the constant effort to improve the product, we reserve the right to make functions or parameters changes without notice or obligation. Please refer to the dealers for the latest details.

FCC Statement

This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. It has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commercial installation.

Operation of this equipment in a residential area is likely to cause interference, in which case the user at their own expense will be required to take whatever measures may be necessary to correct the interference.

Any changes or modifications not expressly approved by the manufacture would void the user's authority to operate the equipment.

SAFETY PRECAUTIONS

To ensure the best performance from the product, please read all instructions carefully before using the device. Save this manual for further reference.

• Unpack the equipment carefully and save the original box and packing material for possible future shipment.
• Follow basic safety precautions to reduce the risk of fire, electrical shock and injury to persons.
• Do not dismantle the housing or modify the module. It may result in electrical shock or burn.
• Using supplies or parts not meeting the products' specifications may cause damage, deterioration or malfunction.
• Refer all servicing to qualified service personnel.

- To prevent fire or shock hazard, do not expose the unit to rain, moisture or install this product near water.

- Do not put any heavy items on the extension cable in case of extrusion.

- Do not remove the housing of the device as opening or removing the housing may expose you to dangerous voltage or other hazards.

- Install the device in a place with fine ventilation to avoid damage caused by overheat.

- Keep the module away from liquids.

- Spillage into the housing may result in fire, electrical shock, or equipment damage. If an object or liquid falls or spills on to the housing, unplug the module immediately.

- Do not twist or pull by force ends of the optical cable. It can cause malfunction.

- Do not use liquid or aerosol cleaners to clean this unit. Always unplug the power to the device before cleaning.

- Unplug the power cord when left unused for a long period of time.

- Information on disposal for scrapped devices: do not burn or mix with general household waste, please treat them as normal electrical wastes.

Table of Content

1. Product Introduction......1

1.1 Features ....1
1.2 Package List .... 1

2. Technical Specification....2

3. Panel Description....3

3.1 Front Panel....3
3.2 Rear Panel....4

4. System Connection....5

4.1 Usage Precaution....5
4.2 System Diagram....5

5. DIP Switch Operation....6

5.1 EDID Management....6
5.2 HDCP Mode....8

6. System Control Setting....9

6.1 RS232 Command Setting....10

6.1.1 RS232 Control Software....10
6.1.2 Trigger Method Setting ...... 11
6.1.3 CEC Control Setting 12
6.1.4 RS232 Control Setting....12
6.1.5 IR Control Setting .... 14
6.1.6 Relay Control Setting....15
6.1.7 System Command....16

6.2 Front Panel IR Learning....16

7. Panel Drawing ....17

8. Troubleshooting & Maintenance ....18

9. Customer Service ....19

1. Product Introduction

Thanks for choosing the VLHDMICTL1-MME 18G In-line HDMI Controller, which is designed for automatic system control and HDMI signal extension in small meeting rooms and huddle spaces. The controller supports three system trigger methods, IR signal, video signal (5V or TMDS). It automatically triggers CEC commands, pre-loaded RS232 and IR commands to turn on or off display, and relay control to rise and fall the projection screen. It supports video resolution up to 4K@60Hz 4:4:4 HDR 10 and Dolby Vision, and features 4K to 1080P down-scaling for compatibility with 1080P display. Besides passing EDID information from the display, there are multiple built-in EDID settings can be selected by the 4-pin DIP switch on the front panel. In addition, the controller supports CEC pass-through, RS232 control, IR learning and relay control.

1.1 Features

• Supports up to 4Kx2K@60Hz 4:4:4 HDR10 and Dolby Vision, HDCP 2.2 compliant.
- HDCP pass-through or converted to HDCP 1.4 for better compatibility.
• Supports 4K to1080P down-scaling.
- Comprehensive EDID management with 8 EDID Options for various application.
- Automation display control via CEC, RS232 and IR.
- Contact Closure input for connections with a variety of devices, such as sensor and switch.
- Relay control for device like projection screen.
- Built-in signal equalizer, provides capability to use longer range HDMI cable.

1.2 Package List

• 1x 18G In-line HDMI Controller
- 4x Plastic Cushions
• 1x RS232 Cable (3-pin to DB9)
- 1x User Manual

• 2x Mounting Ears with 4 Screws
• 3x 3-pin Terminal Blocks
  • 1x Power Adapter (5V DC 1A)

Note: Please contact your distributor immediately if any damage or defect in the components is found.

1. Technical Specification

Video Input
Input	(1) HDMI IN
Input Connector	(1) Female type-A HDMI
Input Video Resolution	Up to 4Kx2K@60Hz 4:4:4 8bit
Video Output
Output	(1) HDMI OUT/CEC
Output Connector	(1) Female type-A HDMI
Output Video Resolution	Up to 4Kx2K@60Hz 4:4:4 8bit
Control
Control	(1) SET Button, (1) 4-pin DIP Switch, (1) FW, (1) IR OUT, (1) RS232, (1) Sensor, (2) Relay (1~2)
Control Connector	(1) Type-A USB, (1) 3.5mm mini jack, (4) 3-pin terminal blocks
General
HDMI Standard	2.0
HDCP Version	2.2
HDCP Pass-through	Supported
CEC Control	Supported
Hot-plug	Supported
Bandwidth	18Gbps
HDMI Cable Length	1080P@60Hz ≤ 33 feet (10 meters), 4K@60Hz ≤ 16 feet (5 meters)
Operation Temperature	-5°C ~ +55°C
Storage Temperature	-25°C ~ +70°C
Relative Humility	10%-90%
Power Supply	Input:100V~240V AC; Output: 5V DC 1A
Power Consumption	2.5W(Max)
Dimension (W*H*D)	120mm x 28mm x 84mm
Net Weight	305g

Note: Please adopt high-qualified HDMI cable fully compliant with HDMI2.0 for reliable transmission and connection.

3. Panel Description

3.1 Front Panel

① POWER LED: The LED illuminates green when power is applied.
② HDMI OUT LED: The LED illuminates blue when there is HDMI signal output.
③ SENSOR: Built-in IR sensor to receive IR signal.
④ DISPLAY ON LED: The LED blinks blue when the controller is in IR learning mode, and it will illuminate blue after successfully learning the IR command.
⑤ DISPLAY OFF LED: The LED blinks blue when the controller is in IR learning mode, and it will illuminate blue after successfully learning the IR command.
⑥ SET: Press the button to enable IR learning mode. Please refer to chapter 6.2 for more details.
⑦ 4-pin DIP switch for EDID setting and HDCP mode selection.
⑧ FW: Type-A USB port for firmware upgrade.

3.2 Rear Panel

① HDMI IN: Type-A female HDMI input port to connect HDMI source device.
② HDMI OUT/CEC: Supports CEC. Type-A female HDMI output port to connect HDMI display.
③ IR OUT: 3.5mm mini jack to connect the IR emitter to send IR signal.
④ RS232: 3-pin terminal block to connect the RS232 control device (e.g. PC) or a device (e.g. projector) to be controlled by RS232 commands.
⑤ Sensor: 3-pin terminal block to connect external sensor or switch.
⑥ Relay 1\~2: Two 3-pin terminal blocks to connect projection screen for relay control.
⑦ DC 5V: DC connector for the power adapter connection.

4. System Connection

4.1 Usage Precaution

• Make sure all components and accessories are included before installation.
• System should be installed in a clean environment with proper temperature and humidity.
• All of the power switches, plugs, sockets, and power cords should be insulated and safe.
• All devices should be connected before power on.

4.2 System Diagram

The following diagram illustrates typical input and output connections that can be utilized with this controller:

5. DIP Switch Operation

5.1 EDID Management

The Extended Display Identification Data (EDID) is used by the source device to match its video resolution with the connected display. By default, the source device obtains its EDID from the first connected display. Meanwhile, since the display with different capabilities is connected to the controller, the DIP switch on the front panel can be used to set the EDID to a fixed value to ensure the compatibility in video resolution.

The switch represents "0" when in the lower (OFF) position, and it represents "1" while putting the switch in the upper (ON) position.

Switch 1\~3 are used for EDID setting. The DIP switch status and its corresponding setting are shown at the back of the product.

Switch Status	Video Resolution	Audio Format
000	Pass Through
001	1080P	2CH
010	1080P	Multi-CH
011	3840x2160@30Hz HDR	2CH
100	3840x2160@30Hz HDR	Multi-CH
101	3840x2160@60Hz HDR	2CH
110	3840x2160@60Hz HDR	Multi-CH
111	User-defined EDID (Upload the EDID by type-A USB port)

Note:

• 2CH: Supports LPCM 2CH.

- Multi-CH: Supports LPCM 8CH, Dolby TrueHD, DTS-HD, Dolby Digital5.1, DTS 5.1, Dolby Digital Plus.

- User-defined EDID Setting

Except directly invoking the built-in EDID, the specific EDID can be customized by following the below operation process.

1) Rename the user-defined EDID as EC_11.bin.
2) Connect the FW port of the controller to the PC with USB cable, and then power on the controller, the PC will automatically detect a virtual disk named of "BOOTDISK".
3) Double-click to open the disk, a file named of "READY.TXT" will be showed.
4) Copy the user-defined EDID to the "BOOTDISK" disk.
5) Reopen the disk to check the filename "READY.TXT" whether automatically becomes "SUCCESS.TXT", if yes, the user-defined EDID was imported into the controller and saved as its corresponding EDID ID successfully.
6) Remove the USB cable, and then reboot the controller.
7) Now the new EDID can be invoked by setting the DIP switch status to "111".

5.2 HDCP Mode

Put switch 4 on "ON" position to select HDCP Active mode, or to "OFF" for HDCP Passive mode.

Switch Status	Mode	HDCP
OFF (0)	Passive(Default)	Automatically follows the HDCP version of source device.
ON (1)	Active	If the input video has HDCP content, the HDCP version of HDMI output is HDCP 1.4 for broader video solution.If the input video has no HDCP content, the HDMI output has no HDCP either.

6. System Control Setting

- SYSTEM ON

When the controller detects video signal (TMDS, 5V) or IR signal, the system will start and automatically perform the below actions at the same time.

√ Send CEC ON to turn on display.
√ Send RS232 ON + Delay Time (default 3s, range of 1\~180s) + User-defined RS232 command to display.
√ Send IR ON + Delay Time (default 3s, range of 1\~180s) + User-defined IR command to display.
√ Toggle the state of relay 1 as follow.

I/O State	Relay State
	NO	NC
On (Closed)	Closed	Open
Off (Open)	Open	Closed

- SYSTEM OFF

When the controller detects all input source devices are removed, or not receives IR signal within the delay time (default 10mins, range of 5mins-180mins), the system will off and automatically perform the below actions at the same time.

√ Send CEC OFF to turn off display.
√ Send RS232 OFF to display. The number of sending command is default 1 time, it can be set to 2 times by RS232 command.
√ Send IR OFF to display. The number of sending command is default 1 time, it can be set to 2 times by RS232 command.
√ Toggle the state of relay 2.

6.1 RS232 Command Setting

The trigger methods of SYSTEM ON or SYSTEM OFF, and CEC, RS232, IR, Relay control actions can be set by RS232 commands.

6.1.1 RS232 Control Software

Installation: Copy the control software file to the PC which is connected to the controller.

Uninstallation: Delete all the control software files in corresponding file path.

Here take the software CommWatch.exe as example. Double-click the following icon:

CommWatch.exe

The interface of the control software is shown as below:

Please set the parameters of COM number, bound rate, data bit, stop bit and the parity bit correctly, then the RS232 commands can be sent in Command Sending Area.

Baud rate: 9600;

Data bit: 8;

Stop bit: 1;

Parity bit: none.

6.1.2 Trigger Method Setting

Command	Function		Feedback Example
SYSONMETH[X].	Set the trigger method to perform SYSTEM ON.		SYSONMETH1.
	X	Description
	0	Detects IR signal	SET DETECT VEDIO TRIGGER!
	1	Detects HDMI video signal (default 5V, or TMDS)
	2	Detects IR or video signal
SYSOFFMETH[X].	Set the trigger method to perform SYSTEM OFF.		SYSOFFMETH1.
	X	Description
	0	Detects no IR signal	SET NOT DETECT VEDIO TRIGGER!
	1	Detects no HDMI video signal (default 5V, or TMDS)
	2	Detects no IR and video signal
NOSIGDLY:[XXXXX].	Set the system off time to xxxxx (default 10mins, range of 5mins to 180mins). When no HDMI video signal has been detected, the system will off after the setting time.		SET DETECT NOSIGNAL DELAY TIME [XXX]S
NOIRDLY:[XXXXX].	Set the system off time to xxxxx (default 10mins, range of 5mins to 180mins). When no IR signal has been detected, the system will off after the setting time.		SET DETECT NO IR DELAY TIME [XXX]S

18G In-line HDMI Controller with Auto Display Control

5VORTMDS[X].	Set the HDMI video signal trigger condition.		5VORTMDS0.
	X	Description
	0	Detects 5V signal.	DETECT INPUT SOURCE USE 5V!
	1	Detects TMDS signal.
GSYSONMETH.	Report the trigger method of SYSTEM ON.		SELECT DETECT VEDIO TRIGGER!
GSYSOFFMETH.	Report the trigger method of SYSTEM OFF.		SELECT NO DETECT VEDIO TRIGGER!
GNOSIGDLY.	Report the delay time of SYSTEM OFF when the controller detects no input source signal (5V/TMDS).		SET DETECT NOSIGNAL DELAY TIME 300S
GNOIRDLY.	Report the delay time of SYSTEM OFF when the controller detects no IR sensor signal.		SET DETECT NO IR DELAY TIME 300S
G5VORTMDS.	Report the detection method of input source. 5V/TMDS		SELECT DETECT INPUT SOURCE USE 5V!

6.1.3 CEC Control Setting

Command	Function	Feedback Example
CECON.	Enable CEC.	Open CEC Function!
CECOFF.	Disable CEC.	Close CEC Function!
GCECSTAUS.	Report CEC status.	CEC FUNCTION IS OPEN!
TVON.	Turn on display (e.g. TV)
TVOFF.	Turn off display (e.g. TV)

6.1.4 RS232 Control Setting

Command	Function		Feedback Example
RS232ON/+[X]:XXX	When detects triggering signal, automatically send ASCII command XXX to the third-party device (e.g. Projector) whose baud rate is X.		RS232ON/+3:123abc
	X	Baud Rate
	1	2400
	2	4800	Send the ASCII command “123abc” to the third-party whose baud rate is 9600.
	3	9600
	4	19200
	5	38400
	6	57600
	7	115200
RS232ON-/[X]:XXX	When detects triggering signal, automatically send HEX command XXX to the third-party device (e.g. Projector) whose baud rate is X.		RS232ON/-3:30 31 32
			Send the HEX command “30 31 32” to the third-party whose baud rate is 9600.
RS232OFF/+[X]:XXX	When does not detect any triggering signal, automatically send ASCII command XXX to the third-party device (e.g. Projector) whose baud rate is X.		RS232OFF/+3:123abc
			Send the ASCII command “123abc” to the third-party whose baud rate is 9600.
RS232OFF-/[X]:XXX	When does not detect any triggering signal, automatically send HEX command XXX to the third-party device (e.g. Projector) whose baud rate is X.		RS232OFF/-3:30 31 32
			Send the HEX command “30 31 32” to the third-party whose baud rate is 9600.
RS232U/+[X]:XXX	Set the user-defined ASCII command to send to the third-party device (e.g. Projector) whose baud rate is X.		RS232USER/+3:123abc
			Send the user-defined command “123abc” to the third-party whose baud rate is 9600.
RS232U-/[X]:XXX	Set the user-defined HEX command to send to the third-party device (e.g. Projector) whose baud rate is X.		RS232USER/-3:30 31 32
			Send the user-defined command “30 31 32” to the third-party whose baud rate is 9600.
RS232DLY:[XXX].	Set the sending interval time between RS232 ON and RS232 USER to XXX (default 3s, range of 1S to 180s).		SET RS232 ON DELAY TIME [XXX]S
RS232PCS[X].	Set the sending number of RS232 OFF to X.		SET SEND RS232 OFF ONE TIME!
	X	Description
	0	1 time
	1	2 times
RS232OFFDLY:[XX].	Set the two times sending interval time of		SET RS232 OFF SEND DELAY

18G In-line HDMI Controller with Auto Display Control

	RS232 OFF to XX (default 2s, range of 1S to 10s).	TIME [XXX]S
GRS232DLY.	Report the sending interval time between RS232 ON and RS232 USER.	SET RS232 ON DELAY TIME 3S
GRS232PCS.	Report the sending number of RS232 OFF	SELECT SEND RS232 OFF ONE TIME!
GRS232OFFINT.	Report the two times sending interval time of RS232 OFF.	SET RS232 OFF SEND DELAY TIME 2S

6.1.5 IR Control Setting

Command	Function		Feedback Example
IRSTUDY[X].	Learns the IR command from IR remote.		IRSTUDY0.
	X	Description
	0	STUDY IR DISPLAY OFF	READY STUDY IR DISPLAY OFF, PLEASE REMOTE CONTROL RECEIVER IN 10S!
	1	STUDY IR DISPLAY ON
	2	STUDY IR USER
IRSEND[X].	Send the learned IR command.		IRSEND0.
	X	Description	SEND IR DISPLAY OFF!
	0	SEND IR DISPLAY OFF
	1	SEND IR DISPLAY ON
	2	SEND IR USER
IRDLY:[XXX].	Set the sending interval time between IR ON and IR USER to XXX (default 3s, range of 1S to 180s).		SET IR ON DELAY TIME [XXX]S
IRPCS[X].	Set the sending number of IR OFF to X.		SET SEND IR OFF ONE TIME!
	X	Description
	0	1 time
	1	2 times
IROFFDLY:[XX].	Set the two times sending interval time of IR OFF to XX (default 2s, range of 1S to 10s).		SET IR OFF SEND DELAY TIME [XXX]S
GIRDLY.	Report the sending interval time between IR ON and IR USER.		SET IR ON DELAY TIME 3S
GIRPCS.	Report the sending number of IR OFF.		SELECT SEND IR OFF ONE TIME!
GIROFFINT.	Report the two times sending interval time of IR OFF.		SET IR OFF SEND DELAY TIME 2S

6.1.6 Relay Control Setting

Command	Function	Feedback Example
RELAY1DLY:[XXX].	Set the Relay 1 delay time to XXX (default 10s, range of 3S to 180s).	SET RELAY 1 TIME DELAY TIME [XXX]S
RELAY2DLY:[XXX].	Set the Relay 2 delay time to XXX (default 10s, range of 3S to 180s).	SET RELAY 2 TIME DELAY TIME [XXX]S
GRELAY1COT.	Report Relay 1 delay time.	SET RELAY 1 TIME DELAY TIME 10S
GRELAY2COT.	Report Relay 2 delay time.	SET RELAY 2 TIME DELAY TIME 10S

Relay Port Definition

When the controller start SYSTEM ON, the Relay 1 port will perform the below actions:

1) The NO connection closes, and NC connection opens.
2) When the delay time is up, the NO connection opens, and NC connection closes.

When the controller start SYSTEM OFF, the Relay 2 port will perform the below actions:

1) The NO connection closes, and NC connection opens.
2) When the delay time is up, the NO connection opens, and NC connection closes.

6.1.7 System Command

Command	Function		Feedback Example
RST.	Factory reset.		Factory Default!
DOWNSCALER[X].	Enable or disable 4K to1080P down-scaling function.		DOWNSCALER0.
	X	Description	Close Down Scaler Function!
	0	Disable
	1	Enable
GDOWNSCALER.	Report down-scaling status.		DOWN SCALER FUNCTION IS OPEN!
GALLINFO.	Report all device information.
GEDIDMODE.	Report EDID.		EDID:PASS THROUGH
GHDCPMODE.	Report HDCP mode.

6.2 Front Panel IR Learning

Besides configuring IR control by RS232 commands. The IR commands can be learned from IR remote by the SET button on the front panel.

Please according the below steps to learn IR commands from IR remote:

Step 1: Press SET to choose DISPLAY ON or DISPLAY OFF command to be set.

√ DISPLAY ON LED: Flashing indicates that DISPLAY ON mode is selected.
√ DISPLAY OFF LED: Flashing indicates that DISPLAY OFF mode is selected.

Step 2: Point the IR remote at the SENSOR and press the respective button on the IR remote.

Step 3: The DISPLAY ON or DISPLAY OFF LED will stop flashing and remain lit to indicate that IR command has been learnt.

Step 4: Press and hold the SET button for 5 seconds can learn user-defined IR command, and both DISPLAY ON and DISPLAY OFF LEDs are flashing. Then repeat the step 2 and both LEDs will stop flashing and remain lit to indicate that IR command has been learnt.

Step 5: The IR learning mode will self-terminate after 10 seconds of inactivity. Both the DISPLAY ON and DISPLAY OFF LEDs go out to exit the IR learning mode.

7. Panel Drawing

1. Troubleshooting & Maintenance

Problems	Potential Causes	Solutions
Colour losing or no video signal output in HDMI display.	The connecting cables may not be connected correctly or it may be broken.	Check whether the cables are connected correctly and in working condition.
No signal output in this switcher while local input is in normal working state.
Splash screen in output devices.	Poor quality of the connecting cable.	Change for another cable of good quality.
Cannot control this controller by control device (e.g. a PC) through RS232 port.	Wrong RS232 communication parameters.	Make sure the RS232 communication parameters are correct.
	This switcher is broken.	Send it to authorized dealer for repairing.

Note: If your problem still remaining after following the above troubleshooting steps, please contact your local dealer or distributor for further assistance.

9. Customer Service

The return of a product to our Customer Service implies the full agreement of the terms and conditions hereinafter. There terms and conditions may be changed without prior notice.

1) Warranty

The limited warranty period of the product is fixed three years.

2) Scope

These terms and conditions of Customer Service apply to the customer service provided for the products or any other items sold by authorized distributor only.

3) Warranty Exclusion:

• Warranty expiration.
• Factory applied serial number has been altered or removed from the product.
• Damage, deterioration or malfunction caused by:

√ Normal wear and tear.
√ Use of supplies or parts not meeting our specifications.
√ No certificate or invoice as the proof of warranty.
√ The product model showed on the warranty card does not match with the model of the product for repairing or had been altered.
√ Damage caused by force majeure.
√ Servicing not authorized by distributor.
√ Any other causes which does not relate to a product defect.

- Shipping fees, installation or labor charges for installation or setup of the product.

4) Documentation:

Customer Service will accept defective product(s) in the scope of warranty coverage at the sole condition that the defeat has been clearly defined, and upon reception of the documents or copy of invoice, indicating the date of purchase, the type of product, the serial number, and the name of distributor.

Remarks: Please contact your local distributor for further assistance or solutions.