How do I create a video wall with my ST12MHDLANU?

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To create a video wall with ST12MHDLANU, do the following:

• Obtain the StarTech.com Video Switching & Wall Control app from the Google Play™ store or the App Store.
• Use multiple receivers (for example, ST12MHDLANUR) in conjunction with multiple transmitters to create the video wall.
• Use a wireless network infrastructure (for example, a wireless access point) in conjunction with a managed switch.
• Make sure that your mobile device is connected to the same network as the ST12MHDLANU.

Note: The video wall cannot be created with switches that are not managed. For more information about why a managed switch is required, visit http://www.startech.com/faq/video_extenders_st12mhdlan_video_wall_network_requirements. A layer two managed Gigabit Ethernet switch () is recommended for use in video wall setups.

The following example describes how to create a 2 x 2 video wall that uses two video inputs. The information contained in the example can be applied to setups with multiple switches, receivers, and transmitters.

Hardware

The following is a list of the hardware components used in the example setup:

• Two of the .
• Two of the .
• One of the .
• CAT 5e (or greater) Ethernet cables.
• HDMI^® cables.
• Four HDMI displays.
• Two HDMI sources (for example, computers).
• A computer that is connected by wired Ethernet.
• A mobile device that is running Android™ or iOS^®, and has the StarTech.com Video Switching & Wall Control app installed on it.

Configure the hardware

1. Use the Ethernet cables to connect the transmitters and receivers to the IES101002SPF.
2. Connect the IES101002SPF to the rest of the network.
3. Use the HDMI cables to connect the receivers to the displays.
4. Use the HDMI cables to connect the HDMI sources to the transmitters.
5. Set the thumbwheel to A on one transmitter.
6. Set the thumbwheel to A on all of the receivers.
7. Set the thumbwheel to B on the remaining transmitter.

When all of the units are powered on and the HDMI sources are transmitting video, there should be mirrored images from source A displayed on the monitors.

Configure the switch

Note: The following instructions are based on the default configuration for the IES101002SFP switch.

To access the configuration settings for the switch, complete the following:

1. Use an Ethernet cable to connect a computer to one of the ports.
2. Make sure that your computer's network adapter is on the same network as the network switch (by default, 192.168.2.XXX). For more information on how to change your IP address, refer to the following FAQ: https://www.startech.com/en-fi/support/faqs/technical?topic=networking#ip-address-change-windows-mac-os.

To configure the IGMP on the switch, complete the following:

1. Use your web browser to navigate to 192.168.2.1. The default login is Username = admin, Password = [blank].
2. To access the IGMP Snooping Configuration screen, click Configuration > IPMC > IGMP Snooping > Basic Configuration.
3. In the Global Configuration settings, do the following:

• Select the Snooping Enabled check box.
• Select the Unregistered IPMCv4 Flooding Enabled check box.
• In the IGMP SSM Range field, type 232.0.0.0 /8.
• Select the Leave Proxy Enabled check box.
• Select the Proxy Enabled check box.

4. In the Port Related Configuration settings, do the following:

• Clear the Router Port check box.
• Select the Fast Leave check box.
• Set Throttling to Unlimited.

5. Click Save.
6. In IGMP Snooping, click VLAN Configuration.
7. Click Add New IGMP VLAN.
8. In the VLAN settings, do the following:

• Set the VLAN ID settings to 1.
• Select the Snooping Enabled check box.
• Select the IGMP Querier check box.
• Set the Compatibility to IGMP-Auto.
• Set the RV to 2.
• Set the QI (sec) to 125.
• Set the QRI (0.1 sec) to 100.
• Set the LLQI (0.1 sec) to 10.
• Set the URI (sec) to 1.

9. Click Save.

Connect your Android device to the network

To connect to the network for the ST12MHDLANU, you need to connect your mobile device to the 169.254.XXX.XXX network. Depending on the version of the Android operating system that you are running, you many need to manually create a wireless network with a static IP address or assign an IP address for an existing wireless connection.

To connect to the ST12MHDLANU network on a device running Android 5.1.1 (Lollipop) or Cyanogen 12.0, do the following:

1. Make sure that the StarTech.com Video Switching & Wall Control app is installed on your device.
2. Click Settings > WiFi.
3. If you are or were connected to the wireless access point that you want to connect to, select that network and click Forget.
4. Select the wireless network, and if required, enter your password. 
5. Click Advanced Options.
6. Change the IP Settings to Static, and enter the following information:

• In the IP Address field, enter 169.254.XXX.XXX where XXX is a number between 2-254.
• Set the Gateway to default.
• Set the Network prefix length to 16.
• Set the Other settings to default.

Connect your iOS device to the network

1. Click Settings > WiFi.
2. Select the wireless network, and if required, enter your password. 
3. Click the blue arrow or i next to the network.
4. Click the Static tab.
5. Change the IP Settings to Static, and enter the following information:

• In the IP Address field, enter 169.254.XXX.XXX where XXX is a number between 2-254.
• Set the Subnet Mask to 255.255.0.0.
• Set the Router to blank or your default gateway.
• ​Set the DNS to 8.8.8.8.

Configure the video wall

You should now be able to detect two transmitters and four receivers in the Android application. The inputs can be routed and divided between the receivers and the positioning can be changed to achieve the necessary video wall configuration.

You can disconnect the mobile device from the setup and the setup will retain the configuration as long as the video inputs remain turned on.