SCT-SWKVM41-H2U3
Switcher KVM HDMI2.0/ USB3.0 4×1
User Manual

All Rights Reserved
Version: SCT-SWKVM41-H2U3_2021V1.0.0

SCT-SWKVM41-H2U3 KVM HDMI 2.0 Switcher

Switcher KVM HDMI2.0/ USB3.0 4×1
Preface
Read this user manual carefully before using the product. The pictures shown in this manual are for reference only. Different models and specifications are subject to a real products.
This manual is only for operation instruction, please contact the local distributor for maintenance assistance. The functions described in this version were updated till May 2021. In the constant effort to improve the product, we reserve the right to make functions or parameter 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 manufacturer would void the user’s authority to operate the equipment.

Switcher KVM HDMI2.0/ USB3.0 4×1
SAFETY PRECAUTIONS
To ensure the best 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 hazards, do not expose the unit to rain, or 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 overheating.
• 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 onto the housing, unplug the module immediately.
• Do not twist or pull by force ends of the 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.

Product Introduction

Thanks for choosing the professional SCT-SWKVM41-H2U3 HDMI 2.0 4×1 Switcher. The switcher features four HDMI video inputs and one HDMI output. It supports HDMI video resolution up to 4Kx2K@60Hz 4:4:4 HDR 10 and Dolby Vision. The switcher provides one stereo audio output for audio de-embedding and provides four type-B USB ports and three type-A USB ports for KVM management, the four HDMI computers can be controlled via one keyboard, one mouse, and one monitor. In addition, the switcher features four GR ports to connect SC-GRHU table grommets for source selection and a black screen set. The switcher can also be controlled via RS232 and front panel buttons.
1.1 Features

• 4×1 HDMI 2.0 Switcher with KVM.
• Supports video resolution up to 4Kx2K@60Hz 4:4:4, HDR 10, and Dolby Vision.
• HDCP 2.2 compliant.
• Compatible with Windows, Linux, and Mac OS.
• 3.5mm stereo audio output for audio de-embedding.
• Convenient and cost-effective USB 3.0 peripheral sharing.
• Controls four HDMI computers via one keyboard, one mouse, and one monitor.
• KVM auto-switching based on TMDS/5V detection.
• Controllable by buttons, RS232 commands, and SC-GRHU table grommets.
• Simplifies wiring for easy installation.

1.2 Package List

• 1x SCT-SWKVM41-H2U3 HDMI 2.0 4×1 Switcher
• 2x Mounting Ears with 4 Screws
• 4x Plastic Cushions
• 4x 3-pin Terminal Blocks
• 1x RS232 Cable (3-pin to DB9)
• 1x Power Adapter (12V DC 2A)
• 1x User Manual

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

Specification

Video Input

Input| (4) SOURCE 1~4
Input Connector| (4) Female type-A HDMI
HDMI Input Resolution| Up to 4Kx2K@60Hz 4:4:4, HDR10, Dolby Vision
HDMI Standard| 2.0
HDCP Version| 2.2
Video Output
Output| (1) DISPLAY
Output Connector| (1) Female type-A HDMI
HDMI Output Resolution| Up to 4Kx2K@60Hz 4:4:4, HDR10, Dolby Vision
HDMI Standard| 2.0
HDCP Version| 2.2
Audio
Output| (1) AUDIO OUT
Output Connector| (1) 3.5mm mini stereo audio jack
Audio Format| PCM 2CH
Frequency Response| 20Hz to 20KHz, ±1dB
Max Output Level| 2.0Vrms ± 0.5dB. 2V = 16dB headroom above -10dBV (316 mV) nominal consumer line level signal.
THD+N| < 0.05%, 20Hz – 20KHz bandwidth, 1KHz sine at 0dBFS level (or max level).
SNR| > 80dB, 20Hz – 20KHz bandwidth.
Crosstalk Isolation| < -80 dB, 10 kHz sine at 0dBFS level (or max level before clipping).
** L-R Level Deviation| < 0.05 dB, 1 kHz sine at 0dBFS level (or max level before clipping).
Output Load Capability| 1Kohm and higher (supports 10x paralleled 10k ohm loads).
Noise Level| -80dB
Control
Control| (1) FW, (4) PC 1~4, (3) DEVICES 1~3, (4) GR 1~4, (1) RS232
Control Connector| (1) Micro-USB, (4) Type-B USB, (3) Type-A USB, (5) 3-pin Terminal Blocks
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General*
Bandwidth| 18Gbps
Operation Temperature| -10℃ ~ +55℃
Storage Temperature| -25℃ ~ +70℃
Relative Humility| 10%-90%
Type-A USB Power Supply| 1A
System Power Supply| Input:100V~240V AC; Output: 12V DC 2A
System Power Consumption| 14W(Max)
Dimension (WH*D)| 200mm x 40mm x 100mm
Net Weight| 685g

Panel Description

3.1 Front Panel

1. POWER LED: The LED illuminates red when power is applied.
2. PC LEDs: A total of four LEDs, any one of which illuminates blue to indicate its corresponding type-B USB port is connected to an active PC.
3. SOURCE LEDs: A total of four LEDs, any one of which illuminates blue to indicate its corresponding HDMI port is connected to an active source device.
4. SOURCE BUTTONs: Four buttons for input source selection, one of which illuminates blue to indicate which source device is selected.
5. AUTO: Press it to enable auto-switching mode, and it will illuminate blue. Press again can exit auto-switching mode.
6. FW: Micro-USB port for firmware upgrade.

Note:
All the input source LEDs will go out when pressing the Black Output button on the HUG Table Grommet
3.2 Rear Panel

1. SOURCE1~SOURCE4: Four type-A female HDMI input ports to connect HDMI source devices (PC, Blu-ray Disc™ or DVD player, etc.).
2. PC1~PC4: Four type-B USB ports to connect PCs. The PC can be a source device connected to the corresponding HDMI input port.
3. DEVICES (1~3): Three type-A USB ports to connect USB devices (Keyboard, Mouse or camera, etc.). These USB devices are used to control the PC which is connected to the selected HDMI input port and the corresponding type-B USB port. These type-A USB ports can power these USB devices with 1A.
4. DISPLAY: Type-A female HDMI output port to connect display device (e.g. Projector).
5. AUDIO OUT: 3-pin terminal block to connect speakers or amplifiers for audio output.
6. GR1~GR4: Four 3-pin terminal blocks to connect four SC-GRHU table grommets for source selection and black screen setting.
7. RS232: 3-pin terminal blocks to a control device (e.g. PC) to control the witcher.
8. DC 12V: Power port for power adapter connection.

System Connection

4.1 Usage Precaution

• Make sure all components and accessories are included before installation.
• The 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 diagrams illustrate typical input and output connections that can be utilized with this switcher:
The switcher is used alone:

Button Control

Manual Switching
Press button 1~4 to the corresponding HDMI input source.

Auto Switching
Press AUTO to enable auto-switch mode, and then the button LED will illuminate blue.
When in auto mode, the switcher follows the rules in certain circumstances:

• The switcher will automatically switch to the first available active input starting at inputs 1 to 4.
• Press the source button (1, 2, 3, or 4 ) can directly change the input source.
• New Input: Upon detecting a new input, the switcher will automatically select the new source.
• Detection input signal source: 5V(Default) or TMDS.
• Reboot: Once power is restored to the switcher if the last selected source is still available, the switcher will still output this signal, otherwise, the switcher will switch to the first available active input starting at input 1.
• Source Removed: When an active source is removed, the switcher will switch to the first available active input starting at input 1.
• Press AUTO again can exit auto-switch mode, but the input source will remain in the current setting.

Note: The factory default is the auto-switching mode.

RS232 Control

Connect the switcher to the control device (e.g. PC) with the RS232 cable and set the parameters in the right manner, the control device is capable to control this switcher by RS232 commands.
6.1 RS232 Control Software
Installation: Copy the control software file to the computer connected with this switcher.
Uninstallation: Delete all the control software files in the corresponding file path.
Basic Settings
First of all, please connect all needed input devices and output devices, then connect them with a computer that is installed with RS232 control software.
Here take the software CommWatch.exe as an example.
Double-click the following icon:

The interface of the control software is shown as below:

Please set the parameters of the COM number, bound rate, data bit, stop bit, and 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.
6.2 RS232 Command
Note: All commands need to be ended with “”.
6.2.1 Device Control

@FRONT PANEL UNLOCKS!
#SET_KEYPAD_LOCK 1| Lock the front panel buttons.| @FRONT PANEL LOCK!
#GET_KEYPAD_LOCK| Get the locking status of the front panel buttons.| @FRONT PANEL UNLOCKS!
@FRONT PANEL LOCK!
#SET_AUTO_KEY_LOCK 0| Unlock the AUTO button.| @AUTO PANEL UNLOCK!
#SET_AUTO_KEY_LOCK 1| Lock the AUTO button.| @AUTO PANEL LOCK!
#GET_AUTO_KEY_LOCK| Get the locking status of the AUTO button.| @AUTO PANEL UNLOCK!
@AUTO PANEL LOCK!
#SET_HDMI_DETECTION _MODE 0| Set the detection method of HDMI source input to 5V.| @INPUT_SIGNAL_DETECTION 0!
#SET_HDMI_DETECTION _MODE 1| Set the detection method of HDMI source input to TMDS.| @INPUT_SIGNAL_DETECTION 1!
#GET_HDMI_DETECTIO N_MODE| Get the detection method of the HDMI source input.| @INPUT_SIGNAL_DETEC TION 0!
@INPUT_SIGNAL_DETEC TION 1!
#GET_STATUS| Get the system status.| @RS232 QUERY STATUS! @WUH4-HUB @V1.0.0 @FRONT PANEL UNLOCK!
@HDMI OUT SWITCH TO AUTO MODE!
@HDMI IN SWITCH TO 1! @OUTPUT_HDCP 0! @INPUT_SIGNAL_DETECTION 0!
Command| Description| Command Example and Feedback
---|---|---
| | @IIS OUT ON! @SWITCHMODE 0! @USB SWITCH MODE TO 0!
@USB SWITCH TO 1! @AUTO PANEL UNLOCKED!
@RS232 BAUDRATE IS 1!
#FACTORY_RESET| Restore factory default| @FACTORY DEFAULT!
@WUH4-HUB
@V1.0.0
@HDMI OUT SWITCH TO AUTO MODE! @OUTPUT_HDCP 0!
@IIS OUT ON!
@INPUT_SIGNAL_DETEC TION 0!
@HDMI IN SWITCH TO 1!
@USB SWITCH MODE TO 0!
@RS232 BAUDRATE IS 1!
#REBOOT| Reboot the device.| @REBOOT
#HELP| Get all commands and their usage.| …

6.2.2 Signal Switching

TO AUTO MODE!

SET_AUTO_SWITCH 0| Disable auto switching| @HDMI OUT SWITCH TO MANUAL MODE!

AUTO MODE!
@HDMI OUT SWITCH TO MANUAL MODE!
#SWITCH_MODE 1| Switching mode 1. Quick switching.| @SWITCHMODE 1!
#SWITCH_MODE 0| Switching mode 2. Normal switching.| @SWITCHMODE 0!
#GET_SWITCH_MODE| Get the switching mode.| @SWITCHMODE 0!
#SET_SWITCH_USB [PARAM]| Switch USB to [PARAM]. [PARAM] = 1~4.
1 – PC1
2 – PC2
3 – PC3
4 – PC4| #SET_SWITCH_USB 1
@SET SWITCH MODE 1! @SET USB SWITCH TO 1!
#GET_SWITCH_USB| Get the PC which switching USB to.| @USB SWITCH TO 1!
#SET_USB_SWITCH_MO DE 0| Set the USB switching mode to follow the video switching.| #SET_USB_SWITCH_MO DE 0
#SET_USB_SWITCH_MO DE 1| Set USB switching mode to command control by “#SET_SWITCH_USB”.| @SET USB SWITCH MODE 1!
#GET_USB_SWITCH_MO DE| Get USB switching mode.| @USB SWITCH MODE TO 0!

6.2.3 Audio Setting

@IIS OUT OFF!

6.2.4 EDID Management

[PARAM]=0000, set the EDID mode to Pass-through (Factory default). If the source device can’t read EDID from the display device, it will use the built- in EDID: 3840×2160@60Hz Deep Color Stereo Audio. [PARAM]=0001/0010/0011, set the EDID of the source device to the user-defined EDID 0001/0010/0011.|

SET_EDID_MODE 0000

@EDID_MODE 0000!
#GET_EDID_MODE| Get the EDID mode.| @EDID_MODE 0000!
#EDIDR [PARAM]| Get the EDID value. [PARAM]= 0000~0011.| @EDID HEX STRING OF ‘0000’: 00 FF FF FF FF FF FF 00 41 0C F2 08 50 12 00 00 … …
#UPLOAD_USER_EDID [PARAM]| [PARAM]=0001/0010/0011, upload user- defined EDID. When the command is applied, the system prompts to upload the EDID file (.bin).
The operation will be canceled in 10 seconds.| #UPLOAD_USER_EDID 0001
@PLEASE SEND THE EDITED FILE!… …
@RECEIVED THE FILE, LENGTH=256! @EDID0001 UPDATED SUCCESSFULLY!

6.2.5 HDCP Setting

(Factory default).
The HDCP of HDMI output automatically follows the HDCP version of the source device.| @OUTPUT_HDCP 0!
Command| Description| Command Example and Feedback
---|---|---
#SET_OUTPUT_HDCP 1| Set the HDMI output to ACTIVE mode. If the input video has HDCP content, the HDCP version of HDMI output is HDCP 1.4 for a broader video solution.
If the input video has no HDCP content, the HDMI output has no HDCP too.| @OUTPUT_HDCP 1
#GET_OUTPUT_HDCP| Get the HDCP mode of HDMI output.| @OUTPUT_HDCP 0!

6.2.6 Baud Rate Setting

2!
#SET_RS232_BAUD 3| Set the RS232 baud rate to 38400| @RS232 BAUDRATE IS 3!
#SET_RS232_BAUD 4| Set the RS232 baud rate to 57600| @RS232 BAUDRATE IS 4!
#SET_RS232_BAUD 5| Set the RS232 baud rate to 115200| @RS232 BAUDRATE IS 5!
#GET_RS232_BAUD| Get the RS232 baud rate.| @RS232 BAUDRATE IS 1!

6.2.7 Display Control

DISPLAY SIDE SCREEN IS BLACK! @THE DISPLAY IS ALREADY OFF!
#SET_THE_DISPLAY_TO 1| Wake up the display screen.| @WAKE UP THE SCREEN!
@THE DISPLAY IS ALREADY ON!
#GET_THE_DISPLAY| Get the status of the display device.| @THE DISPLAY IS OFF!
@THE DISPLAY IS ON!

Firmware Upgrade

Please follow the steps below to upgrade firmware by the FW port on the front panel:

1. Prepare the latest upgrade file (.bin) and rename it as “FW_MERG.bin” on PC.
2. Power off the switcher, and connect the FW port of the switcher to the PC with a USB cable.
3. Power on the switcher, and then the PC will automatically detect a U-disk named “BOOTDISK”.
4. Double-click the U-disk, and a file name of “READY.TXT” would be shown.
5. Directly copy the latest upgrade file (.bin) to the “BOOTDISK” U-disk.
6. Reopen the U-disk to check the filename “READY.TXT” whether automatically becomes “SUCCESS.TXT”, if yes, the firmware was updated successfully, otherwise, if the firmware updating fails, the name of the upgrade file (.bin) should be confirmed again, and then follow the above steps to update again.
7. Remove the USB cable after the firmware upgrade.
8. After the firmware upgrade, the switcher should be restored to factory default by sending the command.

Troubleshooting & Maintenance

another high-quality cable.
Fail or lose connection.| Make sure the connection is good
No output image when switching.| No signal at the input/output end.| Check with an oscilloscope or multimeter if there is any signal at the input/ output end.
Fail or lose connection.| Make sure the connection is good.
The switcher is broken.| Send it to an authorized dealer for repair.
The POWER indicator doesn’t work or has no response to any operation.| Fail connection of power cord.| Make sure the power cord connection is good.
Cannot control the device by control device (e.g. a PC) through an RS232 port.| Wrong RS232 communication parameters.| Type in the correct RS232 communication parameters.
Broken RS232 port.| Send it to the authorized dealer for checking.

If your problem persists after following the above troubleshooting steps, seek further help from an authorized dealer or our technical support.

Customer Service

The return of a product to our Customer Service implies the full agreement of the terms and conditions hereinafter. Their terms and conditions may be changed without prior notice.
1) Warranty
The limited warranty period of the product is fixed at 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 distributors 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 proof of warranty.
  The product model shown on the warranty card does not match the model of the product for repair or had been altered.
  Damage caused by force majeure.
  Servicing is not authorized by the distributor.
  ****Any other causes which do 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 the invoice, indicating the date of purchase, the type of product, the serial number, and the name of the distributor.
Remarks: Please contact your local distributor for further assistance or solutions.

Kontakt:
syscomtec Distribution AG
Raiffeisenallee 8
DE 82041 Oberhaching
Telefon: +49 (0) 89 666 109 330
Telefax: +49 (0) 89 666 109 339
E-Mail: post@syscomtec.com
Homepage: w ww.syscomtec.com

Documents / Resources

| sys com tec SCT-SWKVM41-H2U3 KVM HDMI 2.0 Switcher [pdf] Instruction Manual
SCT-SWKVM41-H2U3, KVM HDMI 2.0 Switcher, SCT-SWKVM41-H2U3 KVM HDMI 2.0 Switcher, HDMI 2.0 Switcher, Switcher
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References

• Digital Signage Lösungen | Signalmanagement und Signalübertragung

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