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4x1 4K 18Gbps HDMI Collaboration Switcher
ActivePossible alternative: PT-SW-UH41-48G

PT-SW-HD41USB

4x1 4K 18Gbps HDMI Collaboration Switcher

The PT-SW-HD41USB is a 4x1 HDMI and USB switcher that consolidates four HDMI 2.0 inputs and four USB-B 3.2 (Gen1x1) connections into a single HDMI output supporting up to 18Gbps bandwidth and resolutions up to 4K@60 …

ManualControl (TCP/IP)FAQSpecificationsDatasheetAlternative availableFirmwareCE declaration ↗
Chapter 1 of 19

Safety precautions

  • 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 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.
Chapter 2 of 19

Introduction

Thanks for choosing the professional PT-SW-HD41USB 4x1 Switcher. The switcher features four HDMI video inputs and one HDMI output. It supports HDMI video resolution up to 4K@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 the PT-IPF-HU interface panels for source selection and black screen setting. The switcher can also be controlled via RS232 and front panel buttons.

Chapter 3 of 19

Feature

  • 4x1 HDMI 2.0 Switcher with KVM.
  • Supports video resolution up to 4K@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 the PT-IPF-HU interface panels.
  • Simplifies wiring for easy installation
Chapter 4 of 19

Package List

  • 1x 4x1 Switcher
  • 2x Mounting Ears with 4 Screws
  • 1x Power Adapter (12V DC 2A)
  • 4x 3-pin Terminal Blocks
  • 4x Plastic Cushions
  • 1x User Manual
Chapter 5 of 19

Panel Description

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

Chapter 6 of 19

Front Panel

No.NameDescription
①POWER LEDThe LED illuminates red when power is applied
②SOURCE LEDsTotal four LEDs, any one of which illuminates blue to indicate its corresponding HDMI port is connected to an active source device.
③PC LEDsTotal four LEDs, any one of which illuminates blue to indicate its corresponding type-B USB port is connected to an active PC.
④SOURCE BUTTONSFour buttons for input source selection, one of which illuminates blue to indicate which source device is selected.
⑤AUTOPress it to enable auto switching mode, and it will illuminate blue. Press again can exit auto switching mode.
⑥FWMicro-USB port for firmware upgrade.

Note: All the input source LEDs will go out when pressing Black Output button.

Chapter 7 of 19

Rear Panel

No.NameDescription
①SOURCE1~SOURCE4Four type-A female HDMI input ports to connect HDMI source devices (PC, Blu-ray Disc™ or DVD player, etc.).
②PC1-PC4Four type-B USB ports to connect PCs. The PC can be a source device connected to the corresponding HDMI input port.
③DEVICEs(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.
④DISPLAYType-A female HDMI output port to connect display device (e.g. Projector).
⑤AUDIO OUT3-pin terminal block to connect speakers or amplifiers for audio output.
⑥GR1~GR4Four 3-pin terminal blocks to connect four PT-IPF-HU interface panels for source selection and black screen setting.
⑦RS2323-pin terminal blocks to a control device (e.g. PC) to control the switcher..
⑧DC 12VPower port for power adapter connection.
Chapter 8 of 19

Specification

CategoryItemDescription
Video InputInput(4) SOURCE 1~4
Video InputInput Connector(4) Female type-A HDMI
Video InputHDMI Input ResolutionUp to 4K@60Hz 4:4:4, HDR10, Dolby Vision
Video InputHDMI Standard2.0
Video InputHDCP Version2.2
Video OutputOutput(1) DISPLAY
Video OutputOutput Connector(1) Female type-A HDMI
Video OutputHDMI Output ResolutionUp to 4K@60Hz 4:4:4, HDR10, Dolby Vision
Video OutputHDMI Standard2.0
Video OutputHDCP Version2.2
AudioOutput(1) AUDIO OUT
AudioOutput Connector(1) 3.5mm mini stereo audio jack
AudioAudio FormatPCM 2CH
AudioFrequency Response20Hz to 20KHz, ± 1dB
AudioMax Output Level2.0Vrms ± 0.5dB. 2V = 16dB headroom above -10dBV (316 mV) nominal consumer line level signal.
AudioTHD+N< 0.05%, 20Hz - 20KHz bandwidth, 1KHz sine at 0dBFS level (or max level).
AudioSNR> 80dB, 20Hz - 20KHz bandwidth.
AudioCrosstalk Isolation< -80 dB, 10 kHz sine at 0dBFS level (or max level before clipping).
AudioL-R Level Deviation< 0.05 dB, 1 kHz sine at 0dBFS level (or max level before clipping).
AudioOutput Load Capability1Kohm and higher (supports 10x paralleled 10k ohm loads).
AudioNoise Level-80dB
ControlControl(1) FW, (4) PC 1~4, (3) DEVICES 1~3, (4) GR 1~4, (1) RS232
ControlControl Connector(1) Micro-USB, (4) Type-B USB, (3) Type-A USB, (5) 3-pin Terminal Blocks
GeneralBandwidth18Gbps
GeneralOperation Temperature-10℃ ~ +55℃
GeneralStorage Temperature-25℃ ~ +70℃
GeneralRelative Humility10%-90%
GeneralType-A USB Power Supply1A
GeneralSystem Power SupplyInput:100V~240V AC; Output: 12V DC 2A
GeneralSystem Power Consumption14W(Max)
GeneralDimension (W*H*D)200mm x 40mm x 100mm
GeneralNet Weight685g
Chapter 9 of 19

System Diagram

  • Make sure all components and accessories 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

The following diagrams illustrate typical input and output connections that can be utilized with this switcher:
The switcher is used alone:

Chapter 10 of 19

Manual Switching

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

Chapter 11 of 19

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 the certain circumstances:

  • The switcher will automatically switch to the first available active input starting at input 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 the current setting.

Note: The factory default is auto switching mode.

Chapter 12 of 19

Table Grommet Control

The optional interface panel (PT-IFP-HU) can be used for input source selection and black screen.

  • Press Show Me on interface panel (PT-IFP-HU) to select HDMI source.
  • Press Black Output on interface panel (PT-IFP-HU) to let display be black screen.
Chapter 13 of 19

RS232 Control Software

Here take the software docklight as an example.

  • Installation
  • Please download the latest Software Version from the link below: https://docklight.de/download/Docklight.zip
  • Then follow the installation wizard for installation on Windows 7 and 10.
  • After the installation, Docklight can be run for the first time and should look like the below screen shot:

Registration is not necessary unless you wish to save settings on exit, so unless you wish to register click on "OK" to close the window.
The next pop-up window can also be closed with "Continue". An empty project is enough to send and receive commands easily (The default setting is always “Start with a blank project / blank script“) Now you are in the main view, where commands are sent and feedback is received.
The next step is to select the correct COM port of the PC. To do this, double-click on "COM1" in the corresponding setup window.

Click “Continue” to close this window.

In the following window, select the drop-down menu labeled "Send / Receive on Comm Channel", select the appropriate COM port and then click on "OK" at the bottom right corner.
All other settings can be left at default for most applications, but refer to device RS232 settings to be sure.

Double click on “COM1” to change to the right COM port.

In order to be able to send commands, open communication with the device by clicking on "Play". (1)
Then the keyboard function must be activated, so that commands can be written in the "communication window". (2)
Finally enter the command, for example "50701%". This is then confirmed by pressing "Enter" to send. Any response from the connected device will appear in red.

  • Select the right COM port.
  • Enable the keyboard type in function.
  • Click “Play” to open the communication.
  • Monitoring area, indicates if the command sent works.
  • Command sending area
Chapter 14 of 19

RS232 Command

Device Control

Note: All commands need to be ended with “<CR><LF>”.

CommandDescriptionCommand Example and Feedback
#GET_FIRMWARE_VERSIONGet the software version.@V1.0.0
#SET_KEYPAD_LOCK 0Unlock the front panel buttons (Factory default).@FRONT PANEL UNLOCK!
#SET_KEYPAD_LOCK 1Lock the front panel buttons.@FRONT PANEL LOCK!
#GET_KEYPAD_LOCKGet the locking status of front panel buttons.@FRONT PANEL UNLOCK! @FRONT PANEL LOCK!
#SET_AUTO_KEY_LOCK 0Unlock the AUTO button.@AUTO PANEL UNLOCK!
#SET_AUTO_KEY_LOCK 1Lock the AUTO button.@AUTO PANEL LOCK!
#GET_AUTO_KEY_LOCKGet the locking status of AUTO button.@AUTO PANEL UNLOCK! @AUTO PANEL LOCK!
#SET_HDMI_DETECTION_MODE 0Set the detection method of HDMI source input to 5V.@INPUT_SIGNAL_DETECTION 0!
#SET_HDMI_DETECTION_MODE 1Set the detection method of HDMI source input to TMDS.@INPUT_SIGNAL_DETECTION 1!
#GET_HDMI_DETECTION_MODEGet the detection method of HDMI source input.@INPUT_SIGNAL_DETECTION 0! @INPUT_SIGNAL_DETECTION 1!
#GET_STATUSGet 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! @IIS OUT ON! @SWITCHMODE 0! @USB SWITCH MODE TO 0! @USB SWITCH TO 1! @AUTO PANEL UNLOCKED! @RS232 BAUDRATE IS 1!
#FACTORY_RESETRestore factory default@FACTORY DEFAULT! @WUH4-HUB @V1.0.0 @HDMI OUT SWITCH TO AUTO MODE! @OUTPUT_HDCP 0! @IIS OUT ON! @INPUT_SIGNAL_DETECTION 0! @HDMI IN SWITCH TO 1! @USB SWITCH MODE TO 0! @RS232 BAUDRATE IS 1!
#REBOOTReboot the device.@REBOOT
#HELPGet all commands and its usage.…

Signal Switching

CommandDescriptionCommand Example and Feedback
#SET_AV H1Switch to HDMI source 1.@HDMI IN SWITCH TO 1!
#SET_AV H2Switch to HDMI source 2.@HDMI IN SWITCH TO 2!
#SET_AV H3Switch to HDMI source 3.@HDMI IN SWITCH TO 3!
#SET_AV H4Switch to HDMI source 4.@HDMI IN SWITCH TO 4!
#GET_AVGet the current HDMI source.@HDMI IN SWITCH TO 1!
#SET_AUTO_SWITCH 1Enable auto switching (Factory default).@HDMI OUT SWITCH TO AUTO MODE!
#SET_AUTO_SWITCH 0Disable auto switching@HDMI OUT SWITCH TO MANUAL MODE!
#GET_AUTO_SWITCHGet the auto switching status.@HDMI OUT SWITCH TO AUTO MODE! @HDMI OUT SWITCH TO MANUAL MODE!
#SWITCH_MODE 1Switching mode 1. Quick switching.@SWITCHMODE 1!
#SWITCH_MODE 0Switching mode 2. Normal switching.@SWITCHMODE 0!
#GET_SWITCH_MODEGet 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_USBGet the PC which switching USB to.@USB SWITCH TO 1!
#SET_USB_SWITCH_MODE 0Set USB switching mode to follows the video switching.#SET_USB_SWITCH_MODE 0
#SET_USB_SWITCH_MODE 1Set USB switching mode to command control by “#SET_SWITCH_USB”.@SET USB SWITCH MODE 1!
#GET_USB_SWITCH_MODEGet USB switching mode.@USB SWITCH MODE TO 0!

Audio Setting

CommandDescriptionCommand Example and Feedback
#SET_IIS 1Turn on stereo audio output.@IIS OUT ON!
#SET_IIS 0Turn off stereo audio output.@IIS OUT OFF!
#GET_IISGet the stereo audio output status.@IIS OUT ON! @IIS OUT OFF!

EDID Management

CommandDescriptionCommand Example and Feedback
#SET_EDID_MODE [PARAM][PARAM]= 0000~0011 [PARAM]=0000, set the EDID mode to Pass-through (Factory default). If the source device can’t read EDID from display device, it will use the built-in EDID: 3840x2160@60Hz Deep Color Stereo Audio. [PARAM]=0001/0010/0011, set the EDID of source device to user-defined EDID 0001/0010/0011.#SET_EDID_MODE 0000 @EDID_MODE 0000!
#GET_EDID_MODEGet 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 applied, system prompts to upload the EDID file (.bin). Operation will be cancelled in 10 seconds.#UPLOAD_USER_EDID 0001 @PLEASE SEND THE EDID FILE! … … @RECEIVED THE FILE, LENGTH=256! @EDID0001 UPDATE SUCCESSFULLY!

Baud Rate Setting

CommandDescriptionCommand Example and Feedback
#SET_RS232_BAUD 1Set RS232 baud rate to 9600.@RS232 BAUDRATE IS 1!
#SET_RS232_BAUD 2Set RS232 baud rate to 19200@RS232 BAUDRATE IS 2!
#SET_RS232_BAUD 3Set RS232 baud rate to 38400@RS232 BAUDRATE IS 3!
#SET_RS232_BAUD 4Set RS232 baud rate to 57600@RS232 BAUDRATE IS 4!
#SET_RS232_BAUD 5Set RS232 baud rate to 115200@RS232 BAUDRATE IS 5!
#GET_RS232_BAUDGet the RS232 baud rate.@RS232 BAUDRATE IS 1!

Display Control

CommandDescriptionCommand Example and Feedback
#SET_THE_DISPLAY_TO 0Set the display to output black screen.@THE DISPLAY SIDE SCREEN IS BLACK! @THE DISPLAY IS ALREADY OFF!
#SET_THE_DISPLAY_TO 1Wake up the display screen.@WAKE UP THE SCREEN! @THE DISPLAY IS ALREADY ON!
#GET_THE_DISPLAYGet the status of display device.@THE DISPLAY IS OFF! @THE DISPLAY IS ON!
Chapter 15 of 19

Firmware Upgrade

  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 switcher to the PC with USB cable.
  3. Power on the switcher, and then the PC will automatically detect a U-disk named of “BOOTDISK”.
  4. Double-click the U-disk, a file named of “READY.TXT” would be showed.
  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, the firmware updating is fail, the name of upgrade file (.bin) should be confirm again, and then follow the above steps to update again.
  7. Remove the USB cable after firmware upgrade.
  8. After firmware upgrade, the switcher should be restored to factory default by sending command.
Chapter 16 of 19

Troubleshooting & Maintenance

ProblemsPotential CausesSolutions
Output image with white noise.Bad quality of the connecting cable.Try another high quality cable.
Output image with white noise.Fail or loose connection.Make sure the connection is good
No output image when switching.No signal at the input / output end.Check with oscilloscope or multimeter if there is any signal at the input/ output end.
No output image when switching.Fail or loose connection.Make sure the connection is good.
No output image when switching.The switcher is broken.Send it to authorized dealer for repairing.
POWER indicator doesn’t work or no respond 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 RS232 port.Wrong RS232 communication parameters.Type in correct RS232 communication parameters.
Cannot control the device by control device (e.g. a PC) through RS232 port.Broken RS232 port.Send it to authorized dealer for checking.
Chapter 17 of 19

After-Sales Service

If there appear some problems when running the product, please check and deal with the problems referring to this user manual. Any transport costs are borne by the users during the warranty.

  1. Product Limited Warranty: This product will be free from defects in materials and workmanship for three years (The purchase invoice shall prevail). Proof of purchase in the form of a bill of sale or receipted invoice which is evidence that the unit is within the Warranty period must be presented to obtain warranty service.
  2. What the warranty does not cover (servicing available for a fee):
  3. 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. Delivery, installation or labor charges for installation or setup of the product.
  4. Technical Support: For any questions or problems, contact your distributor or reseller and tell them the respective product name and version, the detailed failure situation as well as the formation of the cases.
Chapter 18 of 19

Asking for Assistance

Technical Support:

Contact MethodDetails
Phone+49 5971 800299 - 0
Fax+49 5971 800299 – 99
Technical Support Hours8:30 AM to 5:00 PM Monday thru Thursday 8:30 AM to 4:00 PM Friday
Write toPureLink GmbH Von-Liebig-Straße 10 D - 48432 Rheine
Websitewww.purelink.de
Emailinfo@purelink.de
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