PureTools PT-SW-HD41USB User manual

User Manual
PT-SW-HD41USB
User Manual
4x1 4K HDMI with KVM Switcher
Model PT-SW-HD41USB
Designed in Germany
© 2022 PureLink GmbH All rights reserved. VersionV1.0

User Manual
PT-SW-HD41USB
Preface
Read this user manual carefully before using this product. Pictures shown in this
manual are for reference only. Different model layouts and specifications are subject
to the physical product.
This manual is for operation instructions only, not for any maintenance usage.
In the constant effort to improve our product, we reserve the right to make changes in
functions or parameters without prior notice or obligation.
Trademarks
Product model and logo are trademarks. Any other trademarks mentioned in this
manual are acknowledged as the properties of the trademark owner. No part of this
publication may be copied or reproduced without the prior written consent.
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.

User Manual
PT-SW-HD41USB
REACH | 1907/2006/EU
ROHS | 2011/65/EU
PureLink hereby declares that this product PureTools PT-SW-HD41USB complies with
Directives 1907/2006/EU und 2011/65/EU.
EMC / LVD (Electro Magnetic Compatibility / Low Voltage Directive)
PureLink GmbH hereby declares that this product PureTools PT-SW-HD41USB
complies with Directives 2014/30/EU and 2014/35/EU. The full text of the EU
Declaration of Conformity is available at the following Internet address:
http://www.purelink.de/ce/ 4251364734964_CE.pdf

User Manual
PT-SW-HD41USB
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 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.

User Manual
PT-SW-HD41USB
1
Content
1.Product Introduction.....................................................................................................................2
1.1 Introduction......................................................................................................................... 2
1.2 Feature................................................................................................................................2
1.3 Package List.......................................................................................................................2
2. Panel Description.........................................................................................................................3
2.1 Front Panel.........................................................................................................................3
2.2 Rear Panel..........................................................................................................................4
3. Specification..................................................................................................................................5
4. System Diagram..........................................................................................................................7
5. Button Control...............................................................................................................................8
5.1 Manual Switching..............................................................................................................8
5.2 Auto Switching...................................................................................................................8
6. Table Grommet Control..............................................................................................................8
7. RS232 Control..............................................................................................................................9
7.1 RS232 Control Software .................................................................................................9
7.2 RS232 Command...........................................................................................................14
7.2.1 Device Control.................................................................................................... 14
7.2.2 Signal Switching................................................................................................. 16
7.2.3 Audio Setting....................................................................................................... 17
7.2.4 EDID Management............................................................................................ 17
7.2.5 Baud Rate Setting.............................................................................................. 19
7.2.6 Display Control ................................................................................................... 19
8. Firmware Upgrade.................................................................................................................... 20
9. Troubleshooting & Maintenance............................................................................................ 21
10. After-Sales Service................................................................................................................ 22
Asking for Assistance................................................................................................................... 24

User Manual
PT-SW-HD41USB
2
1.Product Introduction
1.1 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.
1.2 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
1.3 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

User Manual
PT-SW-HD41USB
3
Note: Please contact your distributor immediately if any damage or defect in the
components is found.
2. Panel Description
2.1 Front Panel
No.
Name
Description
①
POWER LED
The LED illuminates red when power is applied
②
SOURCE LEDs
Total four LEDs, any one of which illuminates blue
to indicate its corresponding HDMI port is
connected to an active source device.
③
PC LEDs
Total four LEDs, any one of which illuminates blue
to indicate its corresponding type-B USB port is
connected to an active PC.
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 Black Output button on
1 2 3 4 AUTO
1 2 3
FW
4PC
1 2 34SOURCE
12
3
456

User Manual
PT-SW-HD41USB
4
2.2 Rear Panel
No.
Name
Description
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
PT-IPF-HU interface panels for source selection and
black screen setting.
⑦
RS232
3-pin terminal blocks to a control device (e.g. PC) to
control the switcher..
⑧
DC 12V
Power port for power adapter connection.
GR4 DC 12VDISPLAY
GR1
GR3
GR2 RS232
Tx Rx
OBSM OBSM
SOURCE 1
PC 1 PC 2 PC 3 PC 4
SOURCE 2 SOURCE 3 SOURCE 4
DEVICES
OBSM OBSM
1 32
AUDIO OUT
14568
237

User Manual
PT-SW-HD41USB
5
3. Specification
Video Input
Input
(4) SOURCE 1~4
Input Connector
(4) Female type-A HDMI
HDMI Input Resolution
Up to 4K@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 4K@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).

User Manual
PT-SW-HD41USB
6
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
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 (W*H*D)
200mm x 40mm x 100mm
Net Weight
685g

User Manual
PT-SW-HD41USB
7
4. System Diagram
Usage Precaution
⚫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:

User Manual
PT-SW-HD41USB
8
5. Button Control
5.1 Manual Switching
Press button 1~4 to the corresponding HDMI input source.
5.2 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.
6. Interface Panel 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.

User Manual
PT-SW-HD41USB
9
7. RS232 Control
7.1 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
Click “OK” to
close this
window.

User Manual
PT-SW-HD41USB
10
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.

User Manual
PT-SW-HD41USB
11
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.

User Manual
PT-SW-HD41USB
12
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.
(3)
Select the right
COM port.

User Manual
PT-SW-HD41USB
13
Enable the
keyboard type in
function.
Click “Play” to
open the
communication.
Monitoring area,
indicates if the
command sent works.
Command
sending area

User Manual
PT-SW-HD41USB
14
7.2 RS232 Command
Note: All commands need to be ended with “<CR><LF>”.
7.2.1 Device Control
Command
Description
Command Example and
Feedback
#GET_FIRMWARE_VERS
ION
Get the software version.
@V1.0.0
#SET_KEYPAD_LOCK 0
Unlock the front panel buttons
(Factory default).
@FRONT PANEL
UNLOCK!
#SET_KEYPAD_LOCK 1
Lock the front panel buttons.
@FRONT PANEL LOCK!
#GET_KEYPAD_LOCK
Get the locking status of front
panel buttons.
@FRONT PANEL
UNLOCK!
@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 AUTO
button.
@AUTO PANEL UNLOCK!
@AUTO PANEL LOCK!
#SET_HDMI_DETECTIO
N_MODE 0
Set the detection method of
HDMI source input to 5V.
@INPUT_SIGNAL_DETEC
TION 0!
#SET_HDMI_DETECTIO
N_MODE 1
Set the detection method of
HDMI source input to TMDS.
@INPUT_SIGNAL_DETEC
TION 1!
#GET_HDMI_DETECTIO
N_MODE
Get the detection method of
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!

User Manual
PT-SW-HD41USB
15
Command
Description
Command Example and
Feedback
@HDMI IN SWITCH TO
1!
@OUTPUT_HDCP 0!
@INPUT_SIGNAL_DETEC
TION 0!
@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 its
usage.
…

User Manual
PT-SW-HD41USB
16
7.2.2 Signal Switching
Command
Description
Command Example and
Feedback
#SET_AV H1
Switch to HDMI source 1.
@HDMI IN SWITCH TO
1!
#SET_AV H2
Switch to HDMI source 2.
@HDMI IN SWITCH TO
2!
#SET_AV H3
Switch to HDMI source 3.
@HDMI IN SWITCH TO
3!
#SET_AV H4
Switch to HDMI source 4.
@HDMI IN SWITCH TO
4!
#GET_AV
Get the current HDMI source.
@HDMI IN SWITCH TO
1!
#SET_AUTO_SWITCH 1
Enable auto switching (Factory
default).
@HDMI OUT SWITCH TO
AUTO MODE!
#SET_AUTO_SWITCH 0
Disable auto switching
@HDMI OUT SWITCH TO
MANUAL MODE!
#GET_AUTO_SWITCH
Get the auto switching status.
@HDMI OUT SWITCH TO
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!