KRAMER SWT3-21-H (01) PDF DOCUMENT

Please adhere to the following 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 this 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.

• 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.

To achieve the best performance with your KRAMER SWT3-21-H:

• Use only good quality connection cables to avoid interference, deterioration in signal quality, and elevated noise levels.

• 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 SWT3-21-H away from moisture, excessive sunlight, and dust.

The front panel of the KRAMER SWT3-21-H (and SWT3-41-H) provides various controls and indicators.

The rear panel of the KRAMER SWT3-21-H features the following connectors:

Before mounting, ensure the environment is within the recommended range:

• Operation temperature: 0° to 40°C (32° to 104°F).

• Storage temperature: -40° to +70°C (-40° to +158°F).

• Humidity: 10% to 90%, RHL non-condensing.

You can mount the KRAMER SWT3-21-H in a rack or on a surface.

In a rack:

• Use the recommended rack adapter.

On a surface:

You can use 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.

Always switch off the power to each device before connecting it to your KRAMER SWT3-21-H. After connecting, connect its power and then switch on the power to each device.

1. Connect HDMI sources to the HDMI IN connectors. For example, a laptop to HDMI IN 1 and a desktop PC to HDMI IN 2.

2. Connect the HDMI OUT to an HDMI acceptor, such as a display.

3. Connect the AUDIO OUT to a balanced stereo audio acceptor, for example, active speakers.

4. Connect remote contact-closure buttons to the I/O terminal block connectors and configure their function (e.g., to select an input).

5. To serially control a display, connect the RS-232 port on the switcher to the display. You can then send serial commands from a LAN-connected controller to the display via the control gateway feature.

The pinouts for connecting the AUDIO OUT to a balanced or unbalanced stereo audio acceptor are as follows:

Balanced Stereo Audio Connection:

• Connect the L+, L-, G, R+, R- terminals on the KRAMER SWT3-21-H to the corresponding terminals on the balanced audio acceptor.

Unbalanced Stereo Audio Connection:

• Connect L+ to the Left signal pin and R+ to the Right signal pin on the acceptor.

• Short the L- pin to the G (Ground) pin on the KRAMER SWT3-21-H and connect it to the Ground pin for the Left channel on the acceptor.

• Short the R- pin to the G (Ground) pin on the KRAMER SWT3-21-H and connect it to the Ground pin for the Right channel on the acceptor.

You can control the KRAMER SWT3-21-H using an RS-232 connection from a PC or controller. Connect the RS-232 terminal block on the rear panel of the switcher to the controller as follows:

• From the RS-232 9-pin D-sub serial port on the PC/controller:

• Connect Pin 2 (Tx) to the TX pin on the KRAMER SWT3-21-H RS-232 terminal block.

• Connect Pin 3 (Rx) to the RX pin on the KRAMER SWT3-21-H RS-232 terminal block.

• Connect Pin 5 (Ground) to the G pin on the KRAMER SWT3-21-H RS-232 terminal block.

The KRAMER SWT3-21-H has the following switching policies:

• Manual: Select an input manually. Switching occurs whether a live signal is present on the input or not.

• Auto: Auto Switching is performed according to either the Last Connected or the Priority policy.

In Last Connected policy:

• If a signal is plugged in, the KRAMER SWT3-21-H will switch to it.

• If the signal on the current input is lost, the device automatically selects the last connected input. The delay depends on a configurable signal-lost timeout.

In Priority policy:

• If a signal with a higher priority than the current one is plugged in, the device will switch to it.

• When the input sync signal is lost, the input with a live signal and the next in priority is selected automatically. The default priority is HDMI 1 -> HDMI 2 -> etc.

In both Last Connected and Priority modes, manually selecting an input (using the front panel, remote control, or web UI) overrides the automatic selection.

To access the web pages for configuration:

1. Connect your PC to the KRAMER SWT3-21-H via Ethernet.

2. Ensure your browser is supported. Supported systems and browsers include:

• Windows 7: Chrome
• Windows 10: Edge, Chrome
• Mac: Safari
• iOS: Safari
• Android: N/A

3. Enter the IP address of the device into the address bar of your internet browser. The default IP address is 192.168.1.39.

4. If security is enabled, a Login window will appear.

5. Enter the Username (default = Admin) and Password (default = Admin) and click Sign In.

To route inputs to the output using the web interface:

1. Go to the Routing settings page (the default page after login).

2. In the routing matrix, click an Input/Output cross-point to make a connection. A green light on a button indicates a connected source/acceptor.

3. To select a button, make sure to click the text within the square (e.g., “AV Audio-Video”).

An input is now routed to the output.

To set the AV Auto-Switching Policy:

1. Go to the Settings > Auto switching page.

2. Next to the Selection Mode drop-down box, select the auto switching policy: Manual, Last Connected, or Priority.

The switching policy is set.

To change input priorities (when in Priority mode):

1. Go to the Settings > Auto switching page.

2. Next to the Selection Mode drop-down box, select Priority.

3. Click and drag an input between high and low to change its priority.

4. Click SET VIDEO.

The input priorities are set.

To configure audio and video settings:

1. Go to the Settings > AV Audio Video page.

2. Perform the following actions:

• Label: Change the name of an input or the output as it appears on the Routing and EDID management pages.

• HDCP (Inputs): Select the Yes (default) / No switch to enable/disable HDCP for that input.

• HDCP (Output): Select Always On to keep HDCP enabled or Follow Input (default) to define the output HDCP setting according to the active input.

• Color Depth Force 8Bits: Enable or Disable (default) on each input.

• Force LPCM 2CH: Enable or Disable (default) on each input.

• Force RGB on Output: Enable or Disable (default).

• Device Auto-Unmute on volume change: When enabled (default), changing the volume will auto-unmute the audio output.

• Auto Sleep Delay: When enabled (default), if no input signal is detected, the device goes into sleep mode and the output is turned off after a specified time.

• No input signal: Set the number of seconds (30 to 60,000; default = 900) after no signal is detected until the device goes into sleep mode. Click SET TIMEOUT after defining this setting.

To copy an EDID from a source to one or more inputs:

1. Go to the Settings > EDID page.

2. Under STEP 1: SELECT SOURCE, select the EDID source (the output, any of the inputs, default, or a custom uploaded EDID).

3. Under STEP 2: SELECT DESTINATION, select one or more inputs as the destination for copying the EDID.

4. Click COPY EDID.

The EDID is copied.

All maintenance tasks are performed from the Device > General page.

Upgrading Firmware:

1. Go to the Device > General page.

2. Under General, click Update, open the relevant firmware file, and follow the instructions. The upgrade takes approximately 30-60 seconds.

Resetting and Restarting:

• Restart: Reboots your device and keeps all settings. Click DEVICE RESTART.

• Factory Reset: Reboots your device and restores all factory settings (a DHCP-acquired IP address is retained). Click FACTORY RESET. You can also press and hold the rear panel RESET button while connecting power for several seconds.

Exporting a Configuration File:

1. Go to the Device > General page.

2. Under Global System Settings, click EXPORT.

3. Select a location on your computer to save the file and click SAVE.

Importing a Configuration File:

1. Go to the Device > General page.

2. Under Global System Settings, click IMPORT.

3. Select the relevant configuration file from your computer and click SAVE. The device restarts with the new settings.

Identifying Your Device:

1. Go to the Device > General page.

2. Under Global System Settings, click FLAG ME. The NET LED on the front panel will flash for 60 seconds.

To configure the RS-232 port, go to the Control gateway > Serial Ports tab.

The port can be configured in one of three ways via the Tunneling setting:

• Control: Select this to have the RS-232 port control the KRAMER SWT3-21-H itself. Click SAVE.

• Gateway: Select this to control an external device connected to the RS-232 port via an IP-connected controller (e.g., over LAN). Define the external device’s RS-232 settings (Parity, Data Bits, Baud Rate, Stop Bits) and click SAVE. You can also define advanced tunneling properties like TCP/UDP port and keep-alive settings.

• Display ON: Select this to use the RS-232 port to control an external display via the front panel DISPLAY ON/OFF button. Define the display’s RS-232 settings and click SAVE. You must also configure the specific display commands in the Action Editor.

To configure an I/O port:

1. In the navigation pane, go to Control Gateway > IO tab.

2. Select the I/O port to be configured (IO 1 to IO 6).

3. Ensure Remote Button is set to Off to enable I/O operations.

4. Select one of the following I/O types:

• Digital Input: This mode reads the digital input from a sensor. You can set the Pull-up resistor to Enabled or Disabled and define the Threshold VDC Low and High Range.

• Digital Output: This mode controls devices like LEDs or switches. If Pull-up resistor is Enabled, the port provides a TTL signal. If Disabled, the port controls external devices (max 30V DC, 100mA). Set the Current Status to Low or High.

• Analog Input: This mode is triggered by an external analog device, like a volume control. Set the Maximum Reported Steps (1-100), which determines the sensitivity. The voltage of one step = 30V / number of steps.

5. Click SAVE after setting the selected I/O type and its parameters.

The Action Editor allows you to create and test up to 5 control commands via CEC or UART interfaces.

To add an action:

1. Go to Control Gateway > Action Editor tab.

2. Select a command slot (e.g., Command_01) on the left.

3. Change the Command Name if required.

4. Select the Port (CEC or UART).

5. Enter the appropriate command line. For example:

• For CEC Display On: `1,1,tv-on,2,E004`

• For RS232: `PON`

6. Click SAVE.

7. Click RUN COMMAND to test the command.

You can configure CEC or RS-232 commands to be sent when the front panel DISPLAY ON button is pressed.

1. Go to Control Gateway > Display On tab.

2. From the drop-down menus, define the State ON and State Off commands. These commands must be previously created in the Action Editor.

3. Check Momentary for the button to send a command on the press of the button (as opposed to toggling state).

4. Click SAVE.

The DISPLAY ON button is now configured.

To view the device status:

1. In the navigation pane, select Diagnostics > Status.

2. The page displays the overall device status, the input signal status for each HDMI port (On/Off), and the output status.

To change the security status (enable/disable password login):

1. Go to the Administration > Security page.

2. Click the toggle switch next to SECURITY STATUS to set it to On or Off. If turning Off, you will be prompted to enter the current password.

To change the web page access password:

1. Go to the Administration > Security page.

2. Click Change next to Current Password.

3. Enter the current password, then enter and confirm the new password.

4. Click SAVE.

To configure 802.1X Authentication:

1. Go to the Administration > Security > 802.1X tab.

2. Click the toggle to turn IEEE 802.1X AUTHENTICATION to ON.

3. Select an authentication method:

• PEAP-MSCHAP V2: Enter the Username and Password.

• EAP-TLS: Enter the Username, upload the Client Certificate and Private Key files, and enter the Private Key Password.

4. Click APPLY.

RS-232 Default Parameters:

IP DHCP ON Default Parameters:

Full Factory Reset:

To perform a full factory reset, you can use the Protocol 3000 command “#FACTORY” or go to Device > General in the embedded web pages and click FACTORY RESET.

Kramer Protocol 3000 commands are a sequence of ASCII letters used to operate the device via serial or Ethernet ports.

Command format:

#Command Parameter<CR>

Feedback format:

~nn@Command Parameter<CR><LF>

• Prefix: Commands start with ‘#’. Feedback starts with ‘~’.
• Command Name: The specific command to execute.
• Constant (Space): A space separates the command from its parameters.
• Parameter(s): Multiple parameters are separated by a comma (,). Multiple parameters can be grouped using brackets ([ and ]).
• Suffix: Commands are terminated by a carriage return (<CR>).
• Command Chain Separator: Multiple commands can be chained in the same string, separated by a pipe character (|).

The following table lists the available Protocol 3000 commands for the KRAMER SWT3-21-H.

For a full list of all Protocol 3000 commands, please refer to the Protocol 3000 Commands section in the user manual.

In case of an error, the device responds with an error message. The error message syntax is:

• ~NN@ERR XXX<CR><LF> – for a general error, no specific command

• ~NN@CMD ERR XXX<CR><LF> – for a specific command

Where NN is the machine number (default = 01) and XXX is the error code.