Chapter 3: Installation

3.2.5 Synchronizing multiple units

ServSwitch Wizard VGA (USB) units can be connected together so that they operate in a synchronized manner. Thus, two KV3004A units can be made to switch two video heads in a similar manner to an KV3204A. Additionally, two KV3204A units could be made to resemble an KV3404A, while two KV3404A units could be combined in order to switch up to eight video heads simultaneously.

Whenever an ServSwitch Wizard VGA (USB) channel is switched, it sends an RS232 command out on its serial interface (marked OPTIONS on the rear panel). A ServSwitch Wizard VGA (USB) unit will switch its channel if it receives the same command on its serial interface. Consequently, by linking the serial interfaces, a master unit may be made to automatically switch one or more slave units as shown in Figure 3-15.

It should be noted that the synchronization cable deliberately does not have the transmit pin of the Slave End connector linked to the receive pin of the Master End connector. To do so would cause the Slave unit to be able to switch the Master unit. This would setup an endless cyclical switching sequence that would prevent the ServSwitch Wizard VGA (USB) devices from operating cor- rectly. For more details about the serial synchronization cables, see Appendix C.

Master unit

Serial synchronization cable

INDOOR

USER

4

USE

ONLY

CONSOLE

5V

 

 

2.5A

 

 

 

 

OPTIONS

INDOOR

USER

4

USE

ONLY

CONSOLE

5V

 

 

2.5A

 

 

 

 

OPTIONS

3

2

1

USB 1

 

 

 

USB 2

 

 

 

USB2.0

 

 

 

SWITCHED

 

 

Slave unit

3

2

1

USB 1

USB 2

USB2.0

SWITCHED

Slave

Master

monitor

monitor

Computers fitted with multiple video heads

Figure 3-15. Connections for synchronizing two units

724-746-5500 blackbox.com

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Black Box KV3004A, KV3304A, KV3404A, KV3204A manual Synchronizing multiple units, Connections for synchronizing two units

Black Box ServSwitch Wizard VGA (USB), KV3004A, KV3204A, KV3404A, KV3304A specifications

The Black Box KV series of KVM (Keyboard, Video, Mouse) switches, including the KV3404A, KV3204A, KV3304A, and KV3004A, offer a robust solution for managing multiple computers from a single workstation. These devices are designed for efficiency, reliability, and user-friendly operation, catering to the needs of IT professionals across various industries.

The KV3404A KVM switch is capable of supporting up to four servers and features high-resolution VGA video output. It employs USB technology for keyboard and mouse connectivity, ensuring broad compatibility with various operating systems. This switch enables users to quickly switch between connected servers using a simple push-button interface or keyboard shortcuts, enhancing workflow and saving time.

The KV3204A offers similar functionality but adds the convenience of a built-in OSD (On-Screen Display), which provides an intuitive graphical interface for managing the connected devices. The OSD allows users to easily identify and switch between servers using an on-screen menu, streamlining operations in environments with multiple systems.

The Black Box ServSwitch Wizard VGA (USB) is known for its advanced video enhancement technology, providing superior image quality and extended distance support. It can transmit video signals up to 65 meters, making it suitable for large areas where the servers may be located far from the workstation. Additionally, this model is compatible with various video resolutions, ensuring high-definition performance across all connected devices.

The KV3304A and KV3004A models cater to different user needs, with the KV3304A supporting video resolutions up to 1920 x 1080 pixels. Meanwhile, the KV3004A focuses on essential KVM functionality, making it an economical choice for users who require basic switching capabilities without additional features.

In terms of security, these KVM switches are equipped with features like hot plugging and keyboard and mouse emulation, ensuring a seamless user experience. With support for multiple operating systems, including Windows and Linux, the KV series presents a versatile solution for businesses looking to optimize their IT management.

Overall, the Black Box KV series provides a comprehensive, user-centric approach to KVM switching. With advanced features, reliable performance, and excellent compatibility, these devices are ideal for data centers, server rooms, and any environment where efficient server management is a priority.