SWT3-41-U-T 4×1 USB Switcher

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Technical Specifications

• Model: SWT3-41-U-T, EXT3-UE-R, EXT3-U-R,
  ACC3-12-SP

• Components: 4×1 USB Switcher Transmitter, USB
  Receivers, 1:2 CAT Cable Splitter

• Part Number: 2900-301682 Rev 2

• Website: www.kramerav.com

Product Overview

Congratulations on purchasing your Kramer SWT3-41-U-T/
EXT3-UE-R/ EXT3-U-R/ ACC3-12-SP. This section defines the different
components of the product:

SWT3-41-U-T 4×1 USB Switcher

The SWT3-41-U-T is a high-performance switcher transmitter with
two USB-C and two USB-B ports for USB host devices connection. It
offers plug and play host user auto-switching experience based on
active USB signal detection. The switcher allows for the switching
between local and remote USB peripherals over CAT-links, such as a
room camera and microphone, for convenient operation in online
meetings.

Mounting Instructions

Mounting SWT3-41-U-T

Follow the provided guidelines to securely mount the SWT3-41-U-T
device in your desired location.

Mounting EXT3-UE-R

Detailed instructions on mounting the EXT3-UE-R component can be
found in the user manual.

Mounting EXT3-U-R

Refer to the user manual for step-by-step instructions on
mounting the EXT3-U-R device.

Mounting ACC3-12-SP

Ensure to mount the ACC3-12-SP as per the provided instructions
to ensure proper functionality.

Connecting Instructions

Connecting SWT3-41-U-T

• Connect the output to a balanced/unbalanced stereo audio
  acceptor.

• Connect a balanced/unbalanced stereo audio source to the
  balanced input.

• Establish connections to devices via RS-232 for seamless
  operation.

Operating and Controlling Instructions

Principles of Operation

Understand how the SWT3-41-U-T operates for efficient usage.

Using Front Panel Buttons

Learn how to operate the device using the front panel
buttons.

Operating via Ethernet

Instructions on operating and controlling the device via
Ethernet connectivity.

Firmware Upgrade

Refer to the user manual for detailed steps on upgrading the
firmware of your device.

FAQ

What is Protocol 3000?

Protocol 3000 is a communication protocol used by the device.
Refer to the user manual for a detailed understanding of Protocol
3000 commands and codes.

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USER MANUAL
MODELS:
SWT3-41-U-T, EXT3-UE-R, EXT3-U-R, ACC3-12-SP
4×1 USB Switcher Transmitter, USB Receivers, 1:2 CAT Cable Splitter

P/N: 2900-301682 Rev 2

www.kramerav.com

Contents
Introduction Getting Started Overview Typical Applications
Defining SWT3-41-U-T 4×1 USB Switcher Defining SWT3-41-U-T Defining EXT3-UE-R Defining EXT3-U-R Defining ACC3-12-SP
Mounting SWT3-41-U-T, EXT3-UE-R, EXT3-U-R, and ACC3-12-SP Mounting SWT3-41-U-T Mounting EXT3-UE-R Mounting EXT3-U-R Mounting ACC3-12-SP
Connecting SWT3-41-U-T Connecting the Output to a Balanced/Unbalanced Stereo Audio Acceptor Connecting a Balanced/Unbalanced Stereo Audio Source to the Balanced Input Connecting to Devices via RS-232
Operating and Controlling SWT3-41-U-T Principles of Operation Using Front Panel Buttons Operating via Ethernet
Using Embedded Web Pages Operation Settings Diagnostics Administration Viewing the About Page
Upgrading Firmware
Technical Specifications SWT3-41-U-T EXT3-UE-R EXT3-U-R ACC3-12-SP Default Communication Parameters
Protocol 3000 Understanding Protocol 3000 Protocol 3000 Commands Result and Error Codes

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1 1 2 5 6 6 8 9 10 11 11 12 13 14 15 17 17 18 19 19 22 22 26 29 30 50 50 56 57 58 58 59 61 62 63 64 64 65 75

SWT3-41-U-T ­ Contents

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Introduction
Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been providing a world of unique, creative, and affordable solutions to the vast range of problems that confront the video, audio, presentation, and broadcasting professional on a daily basis. In recent years, we have redesigned and upgraded most of our line, making the best even better!

Getting Started
We recommend that you: · Unpack the equipment carefully and save the original box and packaging materials for possible future shipment. · Review the contents of this user manual.
Go to www.kramerav.com/downloads/SWT3-41-U-T to check for up-to-date user manuals, application programs, and to check if firmware upgrades are available (where appropriate).
Achieving Best Performance
· Use only good quality connection cables (we recommend Kramer high- performance, high-resolution cables) to avoid interference, deterioration in signal quality due to poor matching, and elevated noise levels (often associated with low quality cables).
· Do not secure the cables in tight bundles or roll the slack into tight coils. · Avoid interference from neighboring electrical appliances that may adversely influence
signal quality. · Position your Kramer SWT3-41-U-T away from moisture, excessive sunlight and dust.
Safety Instructions
Caution: · This equipment is to be used only inside a building. It may only be connected to other equipment that is installed inside a building. · For products with relay terminals and GPIO ports, please refer to the permitted rating for an external connection, located next to the terminal or in the User Manual. · There are no operator serviceable parts inside the unit.
Warning: · Use only the power cord that is supplied with the unit. · To ensure continuous risk protection, replace fuses only according to the rating specified on the product label which is located on the bottom of the unit.

Recycling Kramer Products

The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC aims to reduce the amount of WEEE sent for disposal to landfill or incineration by requiring it to be collected

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and recycled. To comply with the WEEE Directive, Kramer Electronics has made arrangements with the European Advanced Recycling Network (EARN) and will cover any costs of treatment, recycling and recovery of waste Kramer Electronics branded equipment on arrival at the EARN facility. For details of Kramer’s recycling arrangements in your particular country go to our recycling pages at www.kramerav.com/social-responsibility/environment.

Overview
Congratulations on purchasing your Kramer SWT3-41-U-T/ EXT3-UE-R/ EXT3-U-R/ ACC3-12-SP.
This section defines SWT3-41-U-T, EXT3-UE-R, EXT3-U-R and ACC3-12-SP.
SWT3-41-U-T 4×1 USB Switcher
The SWT3-41-U-T is a high-performance switcher transmitter with two USB-C and two USB-B ports for USB host devices connection and plug and play host user auto-switching experience based on active USB signal detection. The local and remote (over CAT-links) connected USB peripherals, such as a room camera and microphone, are switchable for use of the active USB host, for convenient online meeting participants operation.
SWT3-41-U-T provides exceptional quality, advanced and user-friendly operation, and flexible control.
Exceptional Quality
· USB 3.1 Switching — USB 3.1 signals switching, enables high data­rate connection between active USB host and meeting space USB 3.1 and 2.0 devices, such as 4K camera, high­quality audio devices, and HID (Human Interface Devices) mouse or keyboard devices.
· Comprehensive USB Extension ­ Integrated dual-link transmitters for USB and LAN signals extension with 2­way power providing over extended­reach CAT twisted pair copper infrastructures. The locally selected USB host is auto­connected to remotely connected USB devices, employing either interrupt, bulk or isochronous USB 2.0 standard data transfer communication
· Cost-effective Dual-link USB Extension Deployment ­ Link-paired remote USB receivers are flexibly connected via combined dual-link single CAT cable or dual independent CAT cables connections, according to space extension deployment needs. Typically used for long-distance connection of space remote two PTZ cameras, the combined dual-link single CAT cable runs to a midspan- located CAT splitter that optimally connects to receiver-connected cameras via the shortest independent CAT cables.
Advanced and User-friendly Operation
· Collaborative Online-meeting Switching ­ Controllable switching of online- session USB host participants and space-deployed local and remote visual (such as camera) and audible (such as microphones or headsets) USB peripherals, allows collaborative online meeting and smooth content sharing operation among online meeting participants.
· BYOD Ease and Convenience — Connect any USB­C device as an online meeting

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participant, while providing the connected device with multiple concurrent capabilities of USB 3.1 and Ethernet connection, USB­driven content sharing, and (if PD­2.0­capable) up to 60 watts of power, all via a single USB­C cable connection only.
· Auto Switcher Ease of Use — Automatically connects the plugged host to the space connected USB peripherals, according to user­configured preferences, such as last­ connected host.
· Simple and Flexible Control ­ Remote IP-controller connection, browser operation webpage, local panel buttons, and remotely connected contact-closure buttons triggering configurable operation functions, for easy and fully flexible USB host ports selection, and switcher control.
Flexible Connectivity
· Flexible USB Connectivity ­ Wide Variety of USB peripheral and dual-role devices can be extended including cameras, touch screens, smart boards, hard drives, game controllers, audio devices, printers, scanners, or HID (Human Interface Devices) devices such as a mouse or keyboard.
· Built-in Intelligent Control Gateway ­ Remote IP-driven intelligent control of local and remote connected USB peripherals (such as PTZ cameras) and sensor devices via IP, RS-232 or I/O. Eliminating the need for an external control gateway, this feature reduces installation complexity and costs, to enable easy integration with control systems, such as Kramer Control.
· Secured Connectivity — Standard IT­grade 802.1x authentication for secured IT LAN connectivity operation.
· Comprehensive and Cost­effective Management — Local panel indication LEDs to facilitate easy local maintenance and troubleshooting. Remote IP­driven device firmware upgrade and management, via user­friendly embedded web pages and optional whole site management system, ensure lasting and field proven deployment.
· Easy and Elegant Installation — PoE powering via LAN port connection, 2­way powering to CAT­paired devices, and half 19″ rack noise­free fan­cooled enclosure for under table mounting, or side­by­side mounting of 2 units in a 1U rack space, for easy and convenient deployment.
EXT3-UE-R USB Receiver
EXT3-UE-R is a comprehensive 2-way powering USB 2.0 receiver over extended- reach twisted pair CAT cable. The receiver converts the transmitted CAT signal into USB 2.0, Ethernet, RS-232 and audio signals.
EXT3-UE-R provides exceptional quality, advanced and user-friendly operation, and flexible control:
Exceptional Quality
· Comprehensive USB Extension ­ Plug & play USB over CAT receiver for connecting a remote USB host to the locally connected USB peripherals, employing either interrupt, bulk or isochronous USB 2.0 standard data transfer communication.
· Simple USB Peripheral Control ­ Remote IP-driven or serial control, via the

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CAT-extended control signals of the connected USB peripherals, such as PTZ cameras and soundbars by a remote LAN-connected control system (for example, Kramer Control).
· Flexible USB Connectivity ­ Wide Variety of USB peripheral and dual-role devices can be extended including cameras, touch screens, smart boards, hard drives, game controllers, audio devices, printers, scanners, or HID (Human Interface Devices) devices such as a mouse or keyboard.
Advanced and User-friendly Operation
· USB Peripheral Charging ­ Fast USB charging of connected USB peripherals when the receiver is powered by a power supply, and standard USB charging when the receiver is powered by the transmitter via CAT.
Flexible Connectivity
· Bidirectional Ethernet Extension ­ LAN interface data flows in both directions, allowing network data transmission and connected-devices control.
· Bidirectional RS­232 Extension ­ Serial interface data flows in both directions, allowing data transmission and device control.
· Audio Extension ­ The transmitted analog audio line signal from the remote audio source is connected to the locally connected audio playing device.
· Comprehensive and Cost­effective Management ­ Local panel indication LEDs facilitate easy local maintenance and troubleshooting. Remote management of connected triggerable I/O devices (such as sensors), via user-friendly embedded web pages and optional whole site management system, ensure lasting and field proven deployment.
· Easy Installation ­ Single twisted­pair cable for carrying signal and power wiring. Compact TOOLS® fan­less enclosure for device­back mounting, or side­by­side mounting of 3 units in a 1U rack space with the recommended rack adapter.
EXT3-U-R USB Receiver

EXT3-U-R is a comprehensive, extended-reach CAT extender kit for USB 2.0, RS-232 and audio signals and 2-way powering over twisted pair. The EXT3-U-R transmitter converts the USB input signal into a CAT signal. The EXT3-U-R receiver converts the transmitted CAT signal into a USB signal.

EXT3-U-R provides exceptional quality, advanced and user-friendly operation, and flexible control:
Exceptional Quality
· Comprehensive USB Extender ­ Plug & play USB extender kit for providing extendedreach CAT signals and 2-way power over twisted pair copper infrastructures. A local USB host is auto-connected to remote-connected USB devices employing either interrupt, bulk or isochronous USB 2.0 standard data transfer communication.
· Flexible USB Connectivity ­ Wide Variety of USB peripheral devices can be extended including cameras, touch screens, smart boards, hard drives, game controllers, audio devices, printers, scanners, or HID (Human Interface Devices) devices such as a mouse or keyboard. Dual role and OTG (On The Go) devices such as smart phones and

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tablets, connected either to a transmitter­side USB host port or receiver-side USB device port, can communication with a remote host or peripheral pairing device.
Advanced and User-friendly Operation · Remote USB Charging ­ Fast USB charging of peripheral devices when the receiver is powered by a power supply, and standard USB charging when the receiver is powered by the transmitter via CAT.
Flexible Connectivity · Bidirectional RS-232 Extension ­ Serial interface data flows in both directions, allowing data transmission and device control. · Audio Extension ­ Send an audio signal from an audio source connected to the transmitter to an active audio playing device connected to the receiver. · Cost-Effective Maintenance ­ Status LED indicators facilitate easy local maintenance and troubleshooting. · Easy Installation ­ Single twisted-pair cable for signal and power wiring. Compact PicoTOOLS® fan-less enclosure for device­back mounting, or side-by-side mounting of 4 units in a 1U rack space with the recommended rack adapter.
ACC3-12-SP 1:2 CAT cable splitter
ACC3-12-SP is a passive splitter of one 4-pair signals-carrying CAT cable to two 2-pair signals-carrying CAT cables, for optimized deployment of extension copper wiring infrastructure.
Typical Applications
· Enterprise and education online meeting rooms. · Upgrade AV meeting rooms to hybrid meeting rooms. · Any solution with flexible connection of multiple USB hosts and local or remote room
peripherals.
Controlling your SWT3-41-U-T
Control your SWT3-41-U-T directly via the front panel push buttons, or: · Via the IP commands transmitted by a controller and touch screen system, or a browser using built-in user-friendly Web pages. · By RS-232 serial commands transmitted by a touch screen system, PC, or a serial controller.

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Defining SWT3-41-U-T 4×1 USB Switcher
This section defines SWT3-41-U-T, EXT3-UE-R, EXT3-U-R and ACC3-12-SP.
Defining SWT3-41-U-T

Figure 1: SWT3-41-U-T 4×1 USB Switcher Front Panel

Feature

Function

1 USB DEVICE USB A 3.1 Ports

Connect to the USB local peripheral devices (for example, a USB camera, a soundbar, microphone and so on).

2 HOST on USB-C 3.1 ports (1 Connect to a USB-C host (for example, a room PC) to communicate with

to 2)

the USB devices (for example, a PTZ camera) that are connected to the

USB device ports and connect to the LAN.

For Host 1 only: Charges the connected host (that supports USB Power Delivery 2.0) up to 60W when the device is powered via the optional 12V DC power adapter. While charging, the charging icon (to the right of the connector) becomes visible and lights orange.

3 HOST SELECT Buttons (1 to Press to select a host. 4)

4 A+B CAT LED

LED Status

Indicates

Lights green

When dual CAT combined signals are sent over the A+B port.

When using CAT splitter, make sure the Dual
CAT extension is set to active via SWT3-41-U-T
embedded webpages. See Enabling Combined Dual CAT A+B Mode on Page 33.

5 NET LED

LED Status

Indicates

6 STATUS LED

Dark Lights green Flashes green for 60s Flashes red/green LED Status

No IP address acquired. A valid IP address has been acquired. A means to identify the device in a system, using command #IDV. IP fallback address has been acquired. Indicates

Dark

Power is off

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Feature

Function Lights white
Lights yellow Lights green Lights blue

Kramer Electronics Ltd.
PSU-powered on (only). Note: This is applicable when power supply is PoE mode. PoE-powered on. Power is on and a source is connected. Power is on, and a source and an acceptor are connected.

Figure 2: SWT3-41-U-T 4×1 USB Switcher Rear Panel

Feature

Function

7 HOST USB B 3.1 Connectors (3 Connect to a USB host (for example, a room PC) to communicate with the

to 4)

USB devices (for example, a PTZ camera) connected to USB device ports

on this device and connect to the LAN.

8 USB CAT OUT PoC
9

A / A+B B

Connect to a compatible CAT receiver (for example an EXT3-UE-R) or a compatible CAT splitter (for example an ACC3-12-SP).
Connect to a compatible CAT receiver (for example an EXT3-UE-R).

10 USB DEVICE USB-A 3.1 Ports Connect to the USB local devices (for example, a USB camera, a

(2 to 3)

soundbar, microphone and so on).

11

USB-C 3.1 Port (4) Connect to the USB local devices (for example, a USB camera, a

soundbar, microphone and so on).

Note that this port does not provide Power delivery 2.0.

12 I/O 2-pin Terminal Block (S1, S2, G)

Connect to: · Input-triggering devices (for example, remote buttons or sensors), OR

13 RS-232 3-pin Terminal Block Connector
(G, Rx, Tx)

· Output-triggered devices (for example, remote alarm LED indication).
These GPIO ports may be configured as a digital input, digital output, or analog input ports. Connect to:
· RS-232 controlled device (for example, a PTZ USB camera) for its remote IP control by a controller (for example, an SL-240C), OR

· RS-232 control port of a controller (for example, an SL-240C) for extension via a CAT port, OR

· PC RS-232 port for controlling the device.

14 LAN PoE RJ-45 Connector
15 12/20V DC Power Connector
16 RESET Recessed Button 17 AUDIO IN 5-pin Terminal Block
Connector

Connect to LAN. The device accepts power from the LAN port (PoE). A LAN- enabled connection on the selected USB-C port is LAN-switched via this LAN port.
Use the included +20V DC 6A connector for powering the unit, or a +12V 2A power adapter (purchased separately) for also powering and charging the source device connected to the USB-C HOST ports on the front panel.
Press and hold while powering the device to reset to factory default values, including IP Settings.
Connect to a balanced, stereo audio source (for example, from the server) for extension via the CAT ports.

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Defining EXT3-UE-R

Kramer Electronics Ltd.

Figure 3: EXT3-UE-R USB Receiver Front/Rear Panel

Feature 18 USB 2 Type A Ports (1 to 3) 19 USB-C Port (4) 20 LINK LED 21 ON

LED 22 CAT IN PoC RJ-45 Connector
23 AUDIO OUTPUT 5-pin Terminal Block Connector (L+, L-, G)
24 I/O 2-pin Terminal Block (S1 to S2)
25 RS-232 3-pin Terminal Block (G, Rx, Tx) 26 LAN PoE RJ-45 Connector 27 SETUP 2-way DIP-switch
28 12V DC Power Connector

Function
Connect to USB local devices (for example, a USB camera, a soundbar, microphone etc.). Ports provide standard USB device charging. Connect to USB local devices (for example, a USB camera, a soundbar, microphone etc.). Port provides standard USB device charging. Note: Port does not provide Power Delivery 2.0 charging.
Flashes blue when a link is established.
Lights green when locally powered by the power adapter. Lights orange when powered by PoC. Connect to:
· One of the USB CAT OUT PoC ports on the SWT3-41-U-T OR,
CAT A or CAT B on the ACC3-12-SP 1:2 CAT cable splitter which can be connected to the SWT3-41-U-T.
Connect to a balanced analog stereo audio line acceptor.

Connect to:

· Input-triggering devices (for example, remote buttons or sensors), OR

· Output-triggered devices (for example, remote alarm LED indication).

These GPIO ports may be configured via paired SWT3-41-U-T embedded webpages, as digital input or output ports.

Connect to an RS-232 controlled device (for example, the connected PTZ USB camera) to be controlled via a controller (for example, SL-240C) which is IP- connected to a paired SWT3-41-U-T.

Connect to LAN or to an IP-controlled device (for example, the connected PTZ USB camera). The device accepts power from the LAN port.

Note: All changes in DIP-Switches apply immediately.

DIP-switch Name

DIP-switch DIP-Switch State

State

Description

RS-232 MODE 1

OFF (up) default

Programming mode

ON (down) Extension mode

For future use 2

Mandatory OFF (up)

Connect to the power adapter.

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Defining EXT3-U-R

Kramer Electronics Ltd.

Figure 4: EXT3-U-R USB Receiver Front/Rear Panel

Feature

Function

29 LINK LED

Flashes blue when a link is established.

30 AUDIO OUT 3.5mm Mini Connect to an unbalanced stereo audio acceptor. Jack

31 USB 2 Type A Ports (1 to Connect to USB devices.

Connect the receiver directly to the power adapter in order to charge

USB devices.

32 ON LED

Lights green when locally powered by the power adapter. Lights orange when powered by PoC.

33 LINK IN RJ-45 Connector Connect to the LINK OUT port on the EXT3-UE-R.

34 PROG (Tx, Rx)

5-pin Terminal Block Connector (with common G pin)

35 RS-232 (Rx, Tx)
36 12V DC Power Connector

Press to toggle between a blank screen (blue or black) and the program display. The BLANK button can be programmed to mute the audio signal at the same time.
Connect to the power adapter.

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Defining ACC3-12-SP

Kramer Electronics Ltd.

Figure 5: ACC3-12-SP 1:2 CAT cable splitter Front/Rear Panel

Feature 37 CAT A+B RJ-45 Port

38 CAT A RJ-45 Port 39 CAT B RJ-45 Port

Function
Connect to a compatible CAT transmitter (for example an SWT3-41-U-T) so send combined signals over the A+B port.
Make sure the Dual CAT extension is set to active via CAT transmitter embedded webpages.
Connect to a compatible CAT receiver (for example an EXT3-UE-R, EXT3-U-R). Connect to a compatible CAT receiver (for example an EXT3-UE-R, EXT3-U-R).

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Mounting SWT3-41-U-T, EXT3-UE-R, EXT3-U-R, and ACC3-12-SP
Mounting SWT3-41-U-T
This section provides instructions for mounting SWT3-41-U-T. Before installing, verify that the environment is within the recommended range:
· Operation temperature ­ 0 to 40C (32 to 104F). · Storage temperature ­ -40 to +70C (-40 to +158F). · Humidity ­ 10% to 90%, RHL non-condensing. Caution: · Mount SWT3-41-U-T before connecting any cables or power.
Warning: · Ensure that the environment (e.g., maximum ambient temperature & air flow) is compatible for the device. · Avoid uneven mechanical loading. · Appropriate consideration of equipment nameplate ratings should be used for avoiding overloading of the circuits. · Reliable earthing of rack-mounted equipment should be maintained. · Maximum mounting height for the device is 2 meters.
Mount SWT3-41-U-T in a rack:
· Use the recommended rack adapter (see www.kramerav.com/product/SWT3-41-U-T).
Mount SWT3-41-U-T on a surface using one of the following methods:
· Mount device with its recommended mounting accessory to the underside of the table and secure.
· Attach the rubber feet and place the unit on a flat surface. · Mount the unit in a rack using the recommended rack adapter
www.kramerav.com/downloads/SWT3-41-U-T.

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Mounting EXT3-UE-R
This section provides instructions for mounting EXT3-UE-R. Before installing, verify that the environment is within the recommended range:
· Operation temperature ­ 0 to 40C (32 to 104F). · Storage temperature ­ -40 to +70C (-40 to +158F). · Humidity ­ 10% to 90%, RHL non-condensing. · EXT3-UE-R must be placed upright in the correct horizontal position.
Warning: · Ensure that the environment (e.g., maximum ambient temperature & air flow) is compatible for the device. · Avoid uneven mechanical loading. · Appropriate consideration of equipment nameplate ratings should be used for avoiding overloading of the circuits. · Reliable earthing of rack-mounted equipment should be maintained.
Mounting EXT3-UE-R Mount device before connecting any cables or power.
To mount EXT3-UE-R
Mount the unit in a rack using the recommended rack adapter (see www.kramerav.com/product/EXT3-UE-R)
To mount the EXT3-UE-R on a table or shelf: · Attach the rubber feet and place the unit on a flat surface. · Fasten a bracket (included) on each side of the unit and attach it to a flat surface. For more information go to www.kramerav.com/downloads/EXT3-UE-Rr

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Mounting EXT3-U-R
This section provides instructions for mounting EXT3-U-R. Before installing, verify that the environment is within the recommended range:
· Operation temperature ­ 0 to 40C (32 to 104F). · Storage temperature ­ -40 to +70C (-40 to +158F). · Humidity ­ 10% to 90%, RHL non-condensing.
Caution: · Mount EXT3-U-R before connecting any cables or power.
Warning: · Ensure that the environment (e.g., maximum ambient temperature & air flow) is compatible for the device. · Avoid uneven mechanical loading. · Appropriate consideration of equipment nameplate ratings should be used for avoiding overloading of the circuits. · Reliable earthing of rack-mounted equipment should be maintained. · Maximum mounting height for the device is 2 meters.
Mount EXT3-U-R in a rack:
· Use the recommended rack adapter (see www.kramerav.com/product/EXT3-U-R).
Mount EXT3-U-R on a surface using one of the following methods: · Attach the rubber feet and place the unit on a flat surface. · Fasten a bracket (included) on each side of the unit and attach it to a flat surface. For more information go to www.kramerav.com/downloads/EXT3-U-R.

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Mounting ACC3-12-SP
This section provides instructions for mounting ACC3-12-SP. Before installing, verify that the environment is within the recommended range:
· Operation temperature ­ 0 to 40C (32 to 104F). · Storage temperature ­ -40 to +70C (-40 to +158F). · Humidity ­ 10% to 90%, RHL non-condensing.
Caution: · Mount ACC3-12-SP before connecting any cables.
Warning: · Ensure that the environment (e.g., maximum ambient temperature) is compatible for the device. · Avoid uneven mechanical loading. · Reliable earthing of rack-mounted equipment should be maintained.
Mount ACC3-12-SP in a rack:
· Use the recommended rack adapter (see www.kramerav.com/product/ACC3-12-SP).
Mount ACC3-12-SP on a surface using one of the following methods:
· Attach the rubber feet and place the unit on a flat surface. · Fasten a bracket (included) on each side of the unit and attach it to
a flat surface. For more information go to www.kramerav.com/downloads/ACC3-12-SP.

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Connecting SWT3-41-U-T

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Always switch off the power to each device before connecting it to your SWT3-41-U-T. After connecting your SWT3-41-U-T, connect its power and then switch on the power to each device.

Figure 6: Connecting to the SWT3-41-U-T
In (Figure 6) SWT3-41-U-T is connected to dual receivers using a CAT splitter to save CAT cables wiring expenses. If not CAT splitter is required, SWT3-41-U-T can connect directly to either one of the required receivers EXT3-UE-R and EXT3-U-R based on needs.
To connect SWT3-41-U-T as illustrated in the example in Figure 6: Connect the HOST USB-C 3.1 2 port to a laptop. Connect the HOST USB-B 3.1 7 port to a room PC. Connect the local USB DEVICE ports 1 , 10 , 11 to USB devices (for example, USB DEVICE 2 to a mouse, USB DEVICE 3 to a keyboard and USB DEVICE 4 to a hands-free mic). Connect a balanced stereo audio source (for example, media player) to the AUDIO IN 5-pin terminal block connector 17 .
1. Connect the USB CAT OUT A / A+B PoC RJ-45 port 8 on the SWT3-41-U-T , to the CAT A+B Input RJ-45 port 36 on the ACC3-12-SP.

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2. Connect the CAT A RJ-45 Output Ports 8 on the ACC3-12-SP , to the LINK IN RJ-45 ports 22 & 33 on the EXT3-UE-R and EXT3-U-R, correspondently.
3. Connect the Outputs on EXT3-U-R as follows:
Connect the USB DEVICE ports 31 to USB devices (for example, USB DEVICE 1 to a Touch TV, USB DEVICE 2 to a PTZ camera and USB DEVICE 3 to a smartboard).
Connect the AUDIO OUT 3.5mm mini jack 30 to an unbalanced stereo audio acceptor (for example, active speakers).
4. Connect the Outputs on EXT3-UE-R as follows:
Connect the USB DEVICE ports 18 to USB devices (for example, USB 1 to a touch TV, USB 3 to a PTZ camera).
Connect the AUDIO OUTPUT 5-pin terminal block connector 23 to a balanced stereo audio acceptor (for example, active speakers).
Connect the I/O 2-pin terminal block connector 24 to a triggering and/or triggered GPIO acceptor (for example, I/O 2 to occupancy detector) or a remote button (for example, a host selector).
5. Control the devices: On the SWT3-41-U-T, connect a controller (for example, SL-240C room controller) to the LAN PoE RJ-45 port 14 , or to the RS-232 port 13 . On EXT3-U-R receiver side, connect the RS-232 port 16 to a PTZ camera (send serial commands from SL-240C to the camera via receiver RS-232 port). On EXT3-U-R receiver side, connect the LAN PoE RJ-45 port to a PTZ camera (send IP commands from SL-240C to the camera via receiver LAN port).
6. When not PoE powered, connect the power adapter to SWT3-41-U-T and to the mains electricity.
To charge the device that is connected to the host USB-C port, you need to use a power w adapter for powering the SWT3-41-U-T switcher transmitter.

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Connecting the Output to a Balanced/Unbalanced Stereo Audio Acceptor
The following are the pinouts for connecting the output to a balanced or unbalanced stereo audio acceptor:

Figure 7: Connecting to a Balanced Stereo Audio Figure 8: Connecting to an Unbalanced Stereo Audio

Acceptor

Acceptor

Connecting a Balanced/Unbalanced Stereo Audio Source to the Balanced Input
The following are the pinouts for connecting a balanced or unbalanced stereo audio source to the balanced input:

Figure 9: Connecting a Balanced Stereo Audio Source to the Balanced Input

Figure 10: Connecting an Unbalanced Stereo Audio Source to the Balanced Input

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Connecting to Devices via RS-232

You can connect to SWT3-41-U-T/ EXT3-UE-R/ EXT3-U-R via an RS-232 connection using, for example, a PC.
SWT3-41-U-T, for example, features an RS-232 3-pin terminal block connector allowing the RS-232 to control SWT3-41-U-T.

Connect the RS-232 terminal block on the rear panel of SWT3-41-U-T to a PC/controller, as follows:

From the RS-232 9-pin D-sub serial port connect:

RS-232 Device

· Pin 2 to the TX pin on the SWT3-41-U-T RS-232 terminal

SWT3-41-U-T

block

· Pin 3 to the RX pin on the SWT3-41-U-T RS-232 terminal block

· Pin 5 to the G pin on the SWT3-41-U-T RS-232 terminal
block

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Operating and Controlling SWT3-41-U-T
Principles of Operation
This section covers the following topics: · Flexible SWT3-41-U-T Auto Switching Policy on page 19. · Online Meeting Systems Integration on page 20. · Routing IP-Driven Control Signals via Built-in Control Gateway on page 20. · Muting Extended Audio Signals on page 21. · Flexible Remote Buttons Control on page 21.
Flexible SWT3-41-U-T Auto Switching Policy
Set the USB host switching to connected USB devices policy to: · Manual ­ Select a USB host manually and switching occurs whether a USB host live signal is present or not. · Auto ­ Auto Switching selection is performed in either Last Connected or Priority policy.
In Last Connected policy: If a signal is plugged in this mode, SWT3-41-U-T will switch to it. If the signal on the current input is lost, SWT3-41-U-T automatically selects the last connected input.
The auto-switching delay depends on the configurable signal-lost timeout
In Priority policy: If a signal with a higher priority than the current one is plugged in this mode, SWT3-41-U-T will switch to it. When the input sync signal is lost for any reason, the input with a live signal and next in priority is selected automatically.
The auto-switching delay depends on the configurable signal-lost timeout. Inputs priority is configurable; the default setting is USB-C 1 USB C 2 USB 3 USB 4.
In both Last Connected and Priority modes, manually selecting an input (using the front panel, remote or web UI input select button) overrides automatic selection
See Setting the USB Auto-Switching Policy on page 30.

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Online Meeting Systems Integration
USB device ports can be set to auto-disconnect following presenter disconnection, to allow smooth integration and auto-activation of connected online meeting room systems.
See Enabling/Disabling USB Ethernet Connection
USB-C ethernet connection is disabled by default and is enable only by command. (see Protocol 3000 Commands on page 65) .
Auto-disconnecting a USB Device on Inactive Host on page 36.
Routing IP-Driven Control Signals via Built-in Control Gateway
Remote IP connected clients can communicate and control (send commands, and receive responses and notifications) via the LAN:
· IP commands/responses via the LAN-connected SWT3-41-U-T and CAT-connected EXT3-UE-R LAN extension, to/from the EXT3-UE-R LAN-connected devices.
· Via the SWT3-41-U-T built-in and I/O control gateway: RS-232 commands, to control devices connected to SWT3-41-U-T, EXT3-UE-R and EXT3-U-R RS-232 control ports. The built-in control gateway sends the serial control commands (converted from the client received IP messages) to the locally and/or remotely connected serially controlled devices and distributes their received responses to all connected clients. Send or receive I/O digital triggers or detected triggers, to I/O control devices connected to SWT3-41-U-T and EXT3-UE-R I/O control ports. The built-in control gateway sends the I/O control commands (converted from the client received IP messages) to the locally and/or remotely connected I/O controlled devices and distributes their received detected triggers to all connected clients.
EXT3-UE-R I/O ports control and management via LAN is done via SWT3-41-U-T LAN connection and web-UI only.

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(Figure 11) shows the SWT3-41-U-T built-in control gateway connection for control of its local and remote EXT3-UE-R control ports. The Kramer Control controller is connected to the switcher via LAN, sends IP commands to the switcher control gateway over the LAN connection, to send control messages to, and receive control responses from:
· The PTZ Camera connected to the EXT3-U-R receiver via the RS-232 port. · The PTZ Camera connected to the EXT3-UE-R receiver via the LAN. · The Occupancy Detector connected to the EXT3-UE-R receiver via the I/O ports. · The Soundbar is connected to receiver EXT3-UE-R via the RS-232 port. · The Blinds are locally connected to SWT3-41-U-T via the I/O ports.

Figure 11: Controlling remotely via SWT3-41-U-T Control Gateway
Muting Extended Audio Signals
Sterio audio signal is extended from the switcher transmitter to both receivers, to allow easy audio and music distribution within the same space or separate rooms. Each extended audio signal can be independently muted, to enable a simple end-user control on the distributed audio signals.
See Muting the Extended Audio Signal on page 29.
Flexible Remote Buttons Control
Remote contact-closure buttons can be connected to the I/O ports, for easy end user control of device functions by button press and release operation. Flexible configuration of button press/release actions and latching (default) or momentary operation mode, enable simple and custom control according to user needs.
See Configuring Remote Buttons on page 48.

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Using Front Panel Buttons
SWT3-41-U-T front and rear panel buttons enable the following actions: · Selecting a HOST INPUT. · Resetting device to its factory settings (for additional instructions on resetting and resetting device (see Resetting and Restarting Device on page 34).
Operating via Ethernet
You can connect to SWT3-41-U-T via Ethernet using either of the following methods: · Directly to the PC using a crossover cable (see Connecting Ethernet Port Directly to a PC on page 22). · Via a network switch or router, using a straight-through cable (see Connecting Ethernet Port via a Network Hub or Switch on page 24). If you want to connect via a router and your IT system is based on IPv6, speak to your IT department for specific installation instructions.
Connecting Ethernet Port Directly to a PC
You can connect the Ethernet port of SWT3-41-U-T directly to the Ethernet port on your PC using a crossover cable with RJ-45 connectors.
This type of connection is recommended for identifying SWT3-41-U-T with the factory configured default IP address.
After connecting SWT3-41-U-T to the Ethernet port, configure your PC as follows: 1. Click Start > Control Panel > Network and Sharing Center. 2. Click Change Adapter Settings. 3. Highlight the network adapter you want to use to connect to the device and click Change settings of this connection. The Local Area Connection Properties window for the selected network adapter appears as shown in Figure 12.

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Figure 12: Local Area Connection Properties Window
4. Highlight either Internet Protocol Version 6 (TCP/IPv6) or Internet Protocol Version 4 (TCP/IPv4) depending on the requirements of your IT system.
5. Click Properties. The Internet Protocol Properties window relevant to your IT system appears as shown in Figure 13 or Figure 14.

Figure 13: Internet Protocol Version 4 Properties Window

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Figure 14: Internet Protocol Version 6 Properties Window
6. Select Use the following IP Address for static IP addressing and fill in the details as shown in Figure 15. For TCP/IPv4 you can use any IP address in the range 192.168.1.1 to 192.168.1.255 (excluding default 192.168.1.39 fallback address) that is provided by your IT department.

7. Click OK. 8. Click Close.

Figure 15: Internet Protocol Properties Window

Connecting Ethernet Port via a Network Hub or Switch

You can connect the Ethernet port of SWT3-41-U-T to the Ethernet port on a network switch or router using a straight-through cable with RJ-45 connectors.
Configuring Ethernet Port

You can set the Ethernet parameters via the embedded Web pages.

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Discovering and acquiring IP address
SWT3-41-U-T includes IP address auto-acquiring policy via LAN-connected DHCP server by default. When no DHCP server is detected, a fallback static IP address of 192.168.1.39, and 255.255.255.0 subnet mask (class C), is assigned until an IP address is acquired via the DHCP server.
For more information, refer to Product Page Technical Note in www.kramerav.com/product/SWT3-41-U-T

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Using Embedded Web Pages

SWT3-41-U-T enables you to configure settings via Ethernet using built-in, user-friendly web pages. The Web pages are accessed using a Web browser and an Ethernet connection.
To apply the USB-C type change, device power cycle must be performed.
USB-C ethernet connection is disabled by default and is enabled only by API command. (see Protocol 3000 Commands on page 65).

Before attempting to connect: · Perform the procedure in (see Operating via Ethernet on page 22). · Ensure that your browser is supported.

The following operating systems and Web browsers are supported: Operating Systems Browser

Windows 7
Windows 10
Mac iOS Android

Chrome Edge Chrome Safari Safari N/A

If a web page does not update correctly, clear your Web browser’s cache.

Check that Security/firewalls are not blocking HTTP traffic between the device and the user PC.
To access the web pages: 1. Enter the IP address of the device in the address bar of your internet browser (default = 192.168.1.39). If security is enabled, the Login window appears.

Figure 16: Embedded Web Pages Login Window

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2. Enter the Username (default = Admin) and Password (default = Admin) and click Sign in. The default web page appears.

Figure 17: Default Landing Page

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3. Click the arrow at the top of the navigation list to view the menu items in detail.

Figure 18: Pages and Tabs Navigable List
4. Click the Navigation Pane on the left side of the screen to access the relevant web page.
SWT3-41-U-T web pages enable performing the following actions: · Operation on page 29. · Settings on page 30. · Diagnostics on page 50. · Administration on page 50. · Viewing the About Page on page 56.

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Operation
Routing Signals
This section details the following actions: · Routing a Host to Devices on page 29. · Muting the Extended Audio Signal on page 29.
Routing a Host to Devices Route any of the four USB hosts to all connected USB-C devices. To route the Host to the Devices: 1. Go to the Routing Settings tab.

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Figure 19: Routing Page
2. Perform the following functions: Click a Host/Devices cross-point. A green light button indicates a connected source.
A host is routed to the devices. Muting the Extended Audio Signal:
This feature only works when SWT3-41-U-T is connected to a receiver(s).

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To mute the extended audio signal: 1. Go to the Routing Settings tab. 2. Next to CAT-A /B Audio Mute press to toggle switch to ON.

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Figure 20: Muting Extended Audio Signals
Extended audio signal is muted.
Settings
This section details the following action: · USB Switching Properties on page 30. · Device Properties on page 31. · Settings Networking Properties on page 36. · Control Gateway Properties on page 39.
USB Switching Properties
This section details the following action: · Setting the USB Auto-Switching Policy on page 30.
Setting the USB Auto-Switching Policy To set the USB auto-switching policy: 1. Go to the Auto switching tab. 2. Next to the Selection Mode drop-down box, select the auto switching policy: Manual, Last Connected or Priority. USB auto-switching policy is set.
To change USB Host Input Priorities: 1. Go to the Auto switching tab. 2. Next to the Selection Mode drop-down box, select Priority.

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3. Click and drag a host input between high and low to change the priorities.
Figure 21: Changing Input Priorities
4. Click SET USB. USB Host Input priorities are set.
Device Properties
This section details the following actions: · Device Profile and Maintenance on page 32. · Changing Device Name on page 32. · Upgrading Firmware on page 33. · Resetting and Restarting Device on page 34. · Identifying Your Device on page 35.

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Device Profile and Maintenance Changing Device Name
SWT3-41-U-T enables you to change the DNS name of the device. To change the device name:
1. Go to the Device > General tab.

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Figure 22: Device > General Page
2. Under General Preferences, change the device name and click SAVE. The device name is changed.

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Upgrading Firmware To upgrade the device firmware: 1. Go to the Device > General tab (Figure 22). 2. Under General, click Update, open the relevant firmware file, and follow the instructions. The upgrade process (Figure 23) takes approximately 30-60 seconds.
· During FW upgrade, the device continues to operate, but the device UI and protocol 3000 communication are inactive. When device restarts, the status LED is lit and USB host and devices connection signal is disconnected until restart completes.
Firmware is updated.
Figure 23:Firmware Upgrade Process Enabling Combined Dual CAT A+B Mode
The SWT3-41-U-T enables you to connect it to a compatible CAT receiver (EXT3-UE-R) or compatible CAT splitter (ACC3-12-SP). When you select Combine Dual CAT A+B, the SWT3-41-U-T sends combined signals over the A+B Port.
Any device connected to the CAT B Port will not function while this feature is active.
To configure Dual CAT A+B Mode 1. Go to the Device > General tab (Figure 22). 2. Next to Combine Dual CAT A+B, press to toggle On.

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3. Click SAVE. Dual CAT A+B Mode indication is displayed on the top bar.

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Figure 24: Device Settings > Dual Mode CAT A+B
Dual CAT A+B Mode is enabled.
Resetting and Restarting Device
Two types of resets can be performed: · Restart ­ Reboots your device and keeps all your device settings, including the IP
address and password. · Reset ­ Reboots your device and restores all factory settings including input/output
definitions, switching configuration, IP address and password (a DHCP-acquired IP address is retained).
To restart the device: Click DEVICE RESTART on the Device > General page (Figure 22).
To perform a factory reset on the device, use one of the following actions: Click FACTORY RESET on the Device > General page (Figure 22). Using protocol 3000 commands, send FACTORY command then RESET commands. On the rear panel, press and hold the RESET button while connecting the power for several seconds.
Exporting and Importing a Configuration File
SWT3-41-U-T enables you to export and store (in connected browsing PC storage) a configuration file, that records all current device settings except the routing operation setup. The stored file can then be imported to the same or different SWT3-41-U-T device to load the recorded settings, for configuration backup and/or solution-replication purposes.

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Exporting a Configuration File
To export a configuration file of the current device settings: 1. Go to the Device > General page (Figure 22). 2. Under Global System Settings, click EXPORT. 3. Select the storage location on your computer to save the configuration file and click SAVE. The configuration file is exported and saved.
Importing a Configuration File
To import a configuration file of the current device settings: 1. Go to the Device > General page (Figure 22). 2. Under Global System Settings, click IMPORT. 3. Select the relevant configuration file from your computer storage and click SAVE. The configuration file is imported and the device restarts with the settings from the configuration file.
Identifying Your Device
To identify the device using a supporting discovery system: 1. Go to the Device > General page (Figure 22). 2. Under Global System Settings, click FLAG ME. NET LED flashes. The device is identified by the discovery system.

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Settings Networking Properties
By default, DHCP is set to on. The IP address shows the actual IP address acquired from the DHCP server, or the auto-acquired fallback IP address when there is no DHCP server detection.
To configure network settings: 1. Go to the Device > General page (Figure 22). 2. Select the Network tab. The network page appears.

Figure 25: Device Settings > Network Page (DHCP On/DHCP Off)
3. Change settings as needed. If required, Set to DHCP (default) or static IP address resolution modes.
4. When in Static IP mode, perform the following actions: Change the IP address. Change the Mask address. Change the Gateway address. Define UDP/TCP port numbers.
Network settings are defined.
Enabling/Disabling USB Ethernet Connection USB-C ethernet connection is disabled by default and is enable only by command. (see Protocol 3000 Commands on page 65) .

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Auto-disconnecting a USB Device on Inactive Host
When a host becomes inactive, you can automatically disconnect one or multiple USB devices.
To define auto-disconnection: 1. Go to the Device > General page (Figure 22). 2. Select the USB tab.

Figure 26: USB Page ­ USB Device Auto-Disconnection
3. For each USB Device Port, select the Local device ports on the SWT3-41-U-T; or select CAT-A / CAT-B for the devices located on the paired receivers. set the auto disconnection status to On or Off. You can also Select All Off or All On to set all device ports to off or on, respectively.
4. Click SAVE.
USB devices are set for connected devices on local transmitter or remote receivers.

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Setting Time and Date You can sync the device time and date to any server around the world. To sync device time and date to a server: 1. In the Navigation pane, click Device. The General tab in the Device page appears. 2. Select the Time and Date tab. The Time and Date tab appears.

Figure 27: Device Settings ­ Time and Date Tab
3. Set the Date and Time. 4. Select the Time Location. 5. In the Use Time Server (NTP) drop-down box, click:
Disabled to disable the time server. Manual to enable time server (NTP). 6. If enabled, type in server information: Enter the time server address. Set sync frequency (every 0 to 23 days). 7. Click SAVE for any change. The devices date and time are synchronized to the server address entered.

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Control Gateway Properties
This section details the following actions: · Setting Serial Port Properties on page 39. · Configuring Local I/O (GPIO) Ports on page 42. · Configuring a Digital Output I/O Type on page 44. · Configuring Remote Receiver I/O (GPIO) Ports on page 46. · Defining and Testing Commands via Action Editor on page 47. · Configuring Remote Buttons on page 48.
Setting Serial Port Properties SWT3-41-U-T enables configuring the RS-232 port in one of the following ways: · Controlling the SWT3-41-U-T on page 39. · Controlling a Local External Device on page 40. · Extending Local RS-232 Port to Remote Receiver RS-232 Port on page 41. · Controlling Remote Devices Connected to the Receiver on page 42.
Controlling the SWT3-41-U-T
To set the RS-232 port to control the device: 1. Go to the Control Gateway tab. The Serial Ports tab appears.

Figure 28: RS-232 for Device Control

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2. Next to Function, select Control. 3. Click SAVE. RS-232 port controls the SWT3-41-U-T.
Controlling a Local External Device
Control a locally connected external device via an IP-connected Controller (for example SL240C that is connected via LAN)
To set the RS-232 port to control an external device: 1. Go to the Control Gateway tab. The Serial Ports tab appears. 2. Next to Function, select Gateway.

Figure 29: Gateway control of local RS-232 port
3. Define the external device RS-232 settings (Parity, Data Bits, Baud Rate and Stop Bits). 4. Click Save.
The Advanced Settings tab appears. 5. Select either UDP or TCP port. 6. Click SAVE. RS-232 port controls locally connected external device via gateway.

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Enable RS-232 port extension over CAT link with bi-directional serial communication. To set the local RS-232 port extension to the receiver RS-232 port
1. Go to the Control Gateway page. The Serial Ports tab appears. 2. Next to Function, select Extension.

Figure 30: Local RS-232 port extension
3. Define the RS-232 communication settings (Parity, Data Bits, Baud Rate and Stop Bits). 4. Select link of paired receiver (CAT Link A / B). 5. Click SAVE. RS-232 port extension with bi-directional communication is enabled.

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Controlling Remote Devices Connected to the Receiver
Control an external device, remotely connected to the receiver, via an IP- connected Controller to SWT3-41-U-T (for example SL-240C that is connected via LAN).
To set the receiver RS-232 port to control a connected external device: 1. Go to the Control Gateway page. The Serial Ports tab appears. 2. In the left-hand side of the screen, select CAT-A or CAT-B. 3. Next to Function, select Gateway.

Figure 31: Gateway control of remote receiver RS-232 port
4. Define the paired-receiver RS-232 settings (Parity, Data Bits, Baud Rate and Stop Bits). 5. Click SAVE. RS-232 port controls via gateway a remote external device connected to the receiver RS-
232 port. Configuring Local I/O (GPIO) Ports
The 2 local I/O ports can control devices such as sensors, door locks, remote contact-closure buttons, audio volume and lighting control devices and can be configured via the webpages.
To enable I/O operations, Remote Button must be set to Off.

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To configure an I/O port: 1. In the Navigation pane, click Control Gateway. The Serial Ports tab in the Device Settings page appears. 2. Select the IO tab. The IO tab appears.

Figure 32: Local I/O ports settings tab ­ Digital Input Type
3. Select the local I/O port to be configured (IO 1 or IO 2).
4. Select one of the following I/O types: Digital Input (default setting) (see Configuring a Digital Input I/O Type on page 43). Digital Output (see Configuring a Digital Output I/O Type on page 44). Analog Input (see Configuring an Analog Input I/O Type on page 45).
The settings available on the page change depending on which trigger type is selected.
5. Click SAVE after setting the selected I/O type.
Configuring a Digital Input I/O Type
The Digital Input trigger mode reads the digital input of an external sensor device that is connected to the I/O port. It detects High (upon passing Max threshold from Low state) or Low (upon passing Min threshold from High state) port states according to the user defined voltage threshold levels.
To configure a digital input I/O type: 1. On the IO tab, select Digital Input next to I/O Type. The Digital Input options appear.

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2. Select one of the following for the Pull-up resistor setting: Disabled Suitable, for example, for a high temperature alarm that exceeds the maximum voltage threshold. When the pull-up resistor is disabled, the port state is low and to be triggered it must be pulled high by the externally connected sensor. Enabled ­ Detection of an open circuit as High, or a short to ground as Low. This is suitable for example, for a pushbutton switch (connecting one terminal of the switch to ground, and the other to the input) or for an alarm closing a circuit that activates a series of actions. When the pull-up resistor is enabled, the port state is high, and to be triggered it must be pulled low by the externally connected sensor.
3. Set the Threshold VDC Low and High Range (threshold voltage at which the port changes state).
4. Click Read to refresh port status information. 5. Click SAVE. Digital input I/O type is configured. Configuring a Digital Output I/O Type To configure a digital output I/O type: 1. On the IO tab, select Digital Output next to I/O type.
A warning message appears.
Figure 33: Digital Output Warning
2. Make sure to follow the instructions in this warning.

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3. Click OK. The Digital Output options appear.

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Figure 34: GPIO Settings Page ­ Digital Output I/O Type
4. Select one of the following for the Pull-up resistor setting: Pullup resistor set to Enabled: The port can be used for controlling devices that accept a TTL signal such as for powering LEDs. The voltage output is TTL positive logic: high: >2.4V; low: < 0.5V. When the pull-up resistor is enabled, the port state is high. For the state to be low, you must select Low for the Current Status. Pullup resistor Disabled: The port is used for controlling external devices such as room or light switches. The external source device determines the voltage output; the maximum voltage is 30V DC and the maximum current is 100mA. When the pull-up resistor is disabled, the port state is low. For the state to be high, select High for the Current Status.
Make sure that the current in this configuration does not exceed 100mA.
5. Click SAVE.
Digital Output I/O type is configured.
Configuring an Analog Input I/O Type
When selectin the Analog Input I/O type, the port is triggered by an external analog device, such as a volume control device. The trigger is activated once when the detected voltage is within the 0 to 30V DC voltage range.

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To configure an analog input I/O type: 1. On the I/O tab, select Analog Input next to I/O type.

Kramer Electronics Ltd.

Figure 35: Local I/O ports settings tab – Analog Input Type
2. Enter or use the arrows to scroll to a value (1­100) for the Maximum reported steps. This value is the number of steps that the analog input signal is divided into. To calculate the voltage of each step, use the following formula: Voltage of one step = 30V / number of steps.
3. Click SAVE. Analog input I/O type is configured.
Configuring Remote Receiver I/O (GPIO) Ports
The 4 remote I/O ports, on the paired receivers, can control devices connected to a receiver, such as sensors, door locks and lighting control devices, and can be configured via SWT3-41U-T webpages.
To configure an I/O port: 1. In the Navigation pane, click Control Gateway. The Serial Ports tab in the Device Settings page appears.

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2. Select the IO tab. The IO tab appears.

Kramer Electronics Ltd.

Figure 36: I/O Ports Settings Page
3. Select the CAT-A or CAT-B I/O port to be configured (IO 1 or IO 2).
4. Select one of the following I/O types: Digital Input (default setting) (see Configuring a Digital Input I/O Type on page 43). · Remote buttons are not configurable on remote I/O ports. · To Configure Remote buttons, refer to Configuring Remote Buttons on page 48.
Digital Output (see Configuring a Digital Output I/O Type on page 44). 5. Click SAVE after setting the selected I/O type. Defining and Testing Commands via Action Editor
Use action editor to create and test control commands via RS-232 control interfaces. You can create up to 5 commands.
To add an action: 1. In the navigation pane, select Control Gateway. The Serial Ports tab opens.

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2. Select the Action Editor tab. The Action Editor appears.

Kramer Electronics Ltd.

Figure 37: Action Editor Tab
3. Select a command name on the left side of the window. 4. Change the command name, if required. 5. Select the port (UART). 6. Enter the appropriate command line (see example below) to have NET LED blink for 60
seconds: For RS232 – 1,#IDV 7. Click SAVE. 8. Click RUN COMMAND to run the command test. An action is entered and can be run.
Configuring Remote Buttons
Remotely operate, by I/O-connected remote buttons, configured control actions (see (see Defining and Testing Commands via Action Editor on page 47).
To Configure Remote Buttons: 1. In the Navigation pane, click Control Gateway. The Serial Ports tab in the Device Settings page appears. 2. Select the IO tab. The IO tab appears. 3. Press to toggle Remote Button to On. 4. Configure defined control actions, for button on/off states, using the State ON, State OFF drop-down boxes.

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Kramer Electronics Ltd.
Button default operation mode is latching. For momentary mode, check the Momentary checkbox.
Figure 38: I/O ports settings tab ­ Configuring Remote Buttons
5. Click SAVE. A control actions remote button can now be remotely operated.

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Diagnostics
Viewing Device Status
View the device status. To view the device status:
1. In the navigation pane, select Status. 2. Select the Devices tab. The Devices Status appears.

Kramer Electronics Ltd.

Figure 39: Device Status Page
3. View device status. Device status can be viewed.
Administration
Setting Security Properties
This section details the following actions: · Changing Security Status on page 51. · Defining 802.1X Authentication on page 52.

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Changing Security Status By default, security status is set to On.
Setting Security Status to Off
To set security status to Off: 1. Go to the Security page (Figure 40). 2. Select the Security tab. The Security settings appears.

Kramer Electronics Ltd.

Figure 40: Security ­ Security Tab
3. Set SECURITY STATUS to Off. The Security Status window appears.

Figure 41: Security Status Message
4. Enter the current password. 5. Click OK. Security status is set to Off.

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Kramer Electronics Ltd.
Setting Security Status to On To set security status to on: 1. Go to the Security > Security (Figure 40). 2. Set SECURITY STATUS to On. Security status is set to On.
Changing Web Pages Access Password To change the password for accessing the embedded web pages: 1. Go to the Security page (Figure 22). 2. Select the Security Tab. The Security settings appear (Figure 42). 3. Enter the Current Password and click Change. The new password settings appear.
Figure 42: Device Settings ­ Changing the Password
4. Enter the new password and confirmation password and click SAVE. The password is changed.
Defining 802.1X Authentication
802.1x security standard supports IT networking authentication based on LAN port and MAC address.

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Kramer Electronics Ltd.
To configure security: 1. In the Navigation pane, click Security. The Security settings tab in the Security page appears. 2. Select 802.1X tab. The 802.1X settings tab appears (see Figure 43).
Figure 43: 802.1X Tab
3. For 802.1x authentication, click ON to enable 802.1x authentication service. 802.1x supports authentication based on port and MAC address.
4. When set to ON check one standard authentication method to set its security attributes. PEAP-MSCHAP V2 (Figure 44) ­ Enter: Username – up to 24 alphanumeric characters, including “_” and “-” characters within the username, and Password – up to 24 ASCII characters

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Kramer Electronics Ltd.

Figure 45: Security Tab ­ EAP-MSCHAP V2 Authentication
· EAP-TLS (Figure 46) ­ To submit certificate from the server for authentication: Enter Username, Click to upload the certificates and keys, Enter the private key password (assigned by IT administrator), Set Server Certificate On

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Kramer Electronics Ltd.

5. Click APPLY.

Figure 47: EAP-TLS ­ Certificates and Password

802.1x authentication security is configured.

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Kramer Electronics Ltd.
Viewing the About Page
View the firmware version and Kramer Electronics Ltd details in the About page.

Figure 48: About Page

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Kramer Electronics Ltd.
Upgrading Firmware
Use the Kramer K-UPLOAD software to upgrade the firmware via ethernet or the RS-232 port, allowing RS-232 to control/program the device). The device continues to operate and once FW upload complete, you are asked to Restart no or later.
The latest version of K-UPLOAD and installation instructions can be downloaded from our website at: www.kramerav.com/support/product_downloads.asp.
Note that in order to use the micro USB port, you need to install the Kramer USB driver, available at: www.kramerav.com/support/product_downloads.asp.

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Technical Specifications

Kramer Electronics Ltd.

SWT3-41-U-T

Hosts Devices Ports

2 USB 3.1 & PD 3.0 2 USB 3.1 3 USB 3.1 1 USB 3.1 1 Stereo Analog Balanced Audio

On USB type­C female connectors On USB-B female connectors On USB-A female connectors On USB type­C female connector On 5­pin terminal block for audio extension

USB Features
Extended USB
Controls Extension Line Extended Ethernet Extended RS-232 Power

2 CAT 1 PoE-accepting Ethernet
1 RS­232 2 GPIO Integrated USB Hubs Standards Compliance Data Rate Transmitted Data Bandwidth Standards Compliance Front Panel
Reach Data Rate Baud Rate Included Power Adapter
For HW Rev 02 and higher, 20V PSU (power supply unit) is included (replacing the 12V PSU).

On RJ­45 female connector for extension line On an RJ­45 female connector for LAN connection and extension over CAT links On 3­pin terminal block On 2­pin terminal block 2 [device 1 & 2 ports] or 1 [other device ports] USB 3.2 GEN 2, 2.0 and 1.1 Up to 480Mbps Up to 300Mbps 2.0 and 1.1 USB Input selector buttons, A+B CAT, Net and Status LED indicators. Up to 100m (330ft) when using Kramer cables Up to 100Mbps 9600 20V DC: 6A Consumption: 3.8A Max. Power: 80W

Environmental Conditions
Regulatory Compliance Enclosure

Optional Power Adapter

PoE

Consumption

Max. Power

USB-C Host Charging

Max. Power Compliance

USB Device Charging

Max. Total Current

Operating Temperature

Storage Temperature

Humidity

Safety

Environmental

Size

Type

12V DC: 2A Consumption: 1.2A Max. Power: 15W 370mA 20W 60W PD 3.0 2A
0° to +40°C (32° to 104°F) -40° to +70°C (-40° to 158°F) 10% to 90%, RHL non- condensing CE, FCC, UKCA RoHs, WEEE 0.5 1U rack Aluminum

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Kramer Electronics Ltd.

Cooling

Fan Ventilation

General

Net Dimensions (W, D, H)

21.46cm x 16.3 cm x 4.36cm (8.45″ x 6.4″ x 1.7″)

Shipping Dimensions (W, D, H) 35cm x 21cm x 6.8 cm (13.77″ x 8.26″ x 2.67″)

Net Weight

0.847 kg

(0.84lbs)

Shipping Weight

1.395 kg

(3.075lbs)

Accessories

20V DC: 6A power supply and cord, USB-C multi-signal cable

Specifications are subject to change without notice at www.kramerav.com

EXT3-UE-R
Ports
Extension Line Extended USB Controls Extended Ethernet Extended RS-232 Power
Environmental Conditions Regulatory Compliance General

1 CAT

1 Stereo Analog Balanced Audio 3 USB 2.0 Devices
1 USB 2.0 Devices 1 PoE-accepting Ethernet

1 RS­232 2 GPIO Reach

Data Rate

Integrated USB Hubs

Transmitted Data Bandwidth

Standards Compliance

Front Panel

Data Rate

Baud Rate

Power adaptor

Source Consumption

Max. Power

PoC

Consumption

Max. Power

USB Device Charging

Max. Total Current

Operating Temperature Storage Temperature Humidity Safety Environmental Size Type

On RJ­45 female connector for extension line On 5­pin terminal block for audio extension
On USB-A female connector On a USB-C female connector On RJ­45 female connector for LAN connection and extension over CAT link On 3­pin terminal block On 2­pin terminal block Up to 100m (330ft) when using Kramer cables Up to 480Mbps 1 Up to 300Mbps 2.0 and 1.1 USB Link and ON Status LED indicators. Up to 100Mbps 9600 12V DC/2A (not included) 1.1A 12W 0.15A 3W 2A
When device is PoC-powered via HDBT, total USB devices charging current is 0.5A only. Workaround: Power device via either LAN PoE or optional power supply to increase total charging current.
0° to +40°C (32° to 104°F) -40° to +70°C (-40° to 158°F) 10% to 90%, RHL non- condensing CE, FCC, UKCA RoHs, WEEE Tool Aluminum

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Kramer Electronics Ltd.

Cooling Net Dimensions (W, D, H)
Shipping Dimensions (W, D, H) Net Weight Shipping Weight

Passive
12.3cm x 6.95cm x 2.74cm (4.84″ x 2.73″ x 0.37″) 15.7cm X 12cm X 8.7cm (6.18″ x 4.72″ x 3.42″) 0.242kg (0.53lbs)
0.963kg (2.21lbs)

Accessories

None

Specifications are subject to change without notice at www.kramerav.com

SWT3-41-U-T ­ Technical Specifications

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Kramer Electronics Ltd.

EXT3-U-R

Ports

1 CAT

On an RJ-45 female connector for extension line

1 Stereo Analog Unbalanced Audio On a 3.5mm mini jack for audio extension

4 USB

On USB-A female connector for USB devices extension

1 RS-232

On a 3-pin terminal block for serial link extension

Extended USB

Data Rate

Up to 480Mbps

Transmitted Data Bandwidth

Up to 300Mbps

Standards Compliance

1.1 and 2.0 USB

Extension Line

Reach

CAT 6A: Up to 100m (330ft) CAT 5e: Up to 30m (100ft) When using Kramer cables

Extended RS-232

Baud Rate

9600

USB Charging

Max Total Current

PSU-powered: 2.5A

PoC-powered: 0.5A

Max Current Per Port

PSU-powered: 2A PoC-powered: 0.5A

Indication LEDs

Front Panel

LINK LED and ON LED

Power

Consumption

12V DC, 1500mA

Source

12V DC, 2A

Specifications are subject to change without notice at www.kramerav.com

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Kramer Electronics Ltd.

ACC3-12-SP

Ports

1 CAT

On RJ­45 female connector

2 CAT

On RJ­45 female connector for extension line

Environmental Conditions

Operating Temperature Storage Temperature

0° to +40°C (32° to 104°F) -40° to +70°C (-40° to 158°F)

Humidity

10% to 90%, RHL non-condensing

Regulatory Compliance

Safety Environmental

CE, FCC, UKCA RoHs, WEEE

Enclosure

Size

Pico Tools

Type

Aluminum

Cooling

None

General

Net Dimensions (W, D, H)

6.22cm x 5.18 cm x 2.44cm (8.45″ x 6.4″ x 1.7″)

Shipping Dimensions (W, D, H) 49cm x 18.6 cm x 58.8cm

(19″ x 7.32″ x 23.14″)

Net Weight

0.104 (0.22lbs)

Shipping Weight

0.214 kg (0.47lbs)

Accessories

None

Specifications are subject to change without notice at www.kramerav.com

SWT3-41-U-T ­ Technical Specifications

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Kramer Electronics Ltd.

Default Communication Parameters

RS-232

Baud Rate:

115,200

Data Bits:

8

Stop Bits:

1

Parity:

None

Command Format:

ASCII

Example (Route video input 2 to the output):

ROUTE1,1,2

IP DHCP ON

To reset the IP settings to the factory reset values go to: Menu->Setup -> Factory Reset-> press Enter to confirm

Fallback IP Address:

192.168.1.39

Fallback Subnet mask: 255.255.255.0

Fallback gateway:

192.168.0.1

Default username:

Admin

Default password:

Admin

Full Factory Reset

P3K

“#FACTORY” command.

Embedded webpages

After receiving “FACTORY OK” perform one of the following to restart the device and complete the procedure:
· Power cycle · Send command “#RESET”
Go to: Device>General and click FACTORY RESET

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Kramer Electronics Ltd.
Protocol 3000
Kramer devices can be operated using Kramer Protocol 3000 commands sent via serial or Ethernet ports.

Understanding Protocol 3000

Protocol 3000 commands are a sequence of ASCII letters, structured according to the following.

· Command format:

Prefix Command Name Constant (Space) Parameter(s)

Suffix

Command

Parameter