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Black Box KV5300 Series manual Send Null Byte PS/2 Type Mice only

Models: KV5300 Series SW721, SW722, SW723, SW724V SW725 , KV3000, KV5000, KV3100, KV5100, KV3200, KV5200, KV3300, KV5300

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CHAPTER 4: Operation: Hardware and Keyboard Commands

4.3.14SEND NULL BYTE (PS/2 TYPE MICE ONLY)

PS/2 type mice send control data to CPUs in three-byte increments. Sometimes, because of electronic transients, unusual power-up effects, or plugging and unplugging of cables from live equipment, the currently selected CPU in a ServSwitch system can lose one or two bytes of this control information and get “out of sync” with the shared mouse. In this situation, the mouse might seem to refuse to move the pointer or cursor, open windows for no reason, or exhibit other strange behavior. To get the CPU back in sync, send this command to tell the ServSwitch to send a “null byte” to the CPU’s PS/2 mouse port (this has no other effect than getting the CPU “caught up”). To issue the Send Null Byte command, press and release the left Control key, then type [N].

If the mouse still isn’t right after you issue this command, the CPU must have been two bytes out of sync. Issuing the command again should do the trick.

The CPU will be thrown out of sync if it uses a PS/2 mouse and it’s in sync when you issue this command. Issue this command two more times to get it back in sync again. This command has no effect on serial mice, or on CPUs that are not attached to your ServSwitch system through a PS/2 mouse port.

If you have version 9.01 or higher of the Microsoft mouse driver, the CPU should never get out of sync. Contact Microsoft if you would like to upgrade your Microsoft mouse driver.

4.3.15IDENTIFY ROM

Unfortunately, as with all complex equipment, problems might arise with your ServSwitch that require the assistance of technical-support personnel. One of the things technicians might want to know when they attempt to diagnose and correct your problem is the revision level of your Switch’s ROM. This command causes the ServSwitch to send the three-character “x.x” ROM level to the currently selected CPU as ASCII keyboard data; these characters will be echoed back to the shared monitor if you are at some type of prompt. (You must be at some kind of prompt or screen capable of displaying typed-in keyboard characters, or you will not see the Switch’s response.) To issue the Identify ROM command, press and release the left Control key, then type [I].

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Black Box KV5300 Series manual Send Null Byte PS/2 Type Mice only
Page 57 Page 59

KV5300 Series, SW721, SW722, SW723, SW724V SW725 , KV3000, KV5000, KV3100, KV5100, KV3200, KV5200, KV3300, KV5300 specifications

The Black Box SW721, SW722, SW723, SW724V, SW725, KV3000, KV5000, KV3100, KV5100, KV3200, KV5200, KV3300, and KV5300 series represent a range of advanced multimedia switching solutions designed to meet the growing demands of modern AV systems. These products leverage cutting-edge technology to offer seamless integration, enhanced flexibility, and superior performance in audio-video distribution.

The SW721 and SW722 models are known for their versatility, allowing users to easily switch between multiple HDMI and other video formats. These switches support high-definition resolutions up to 4K, ensuring that users can experience crystal-clear video quality. The SW723 and SW724V take this a step further by incorporating advanced video processing capabilities, enabling features like picture-in-picture and scalable resolutions.

The SW725 offers an intuitive user interface, making it ideal for straightforward AV management in educational and corporate environments. Each switch in this range boasts a compact design, making them easy to install in various settings, from boardrooms to classrooms.

Moving to the KV series, the KV3000 and KV5000 models offer extensive options for KVM (Keyboard, Video, Mouse) switching. These models are particularly suited for data centers and IT environments, allowing multiple computers to be managed from a single console. The KV3100 and KV5100 enhance this functionality by supporting high-resolution video and a wide array of connectivity options, making them compatible with a variety of systems.

The KV3200 and KV5200 introduce advanced features like USB emulation, which ensures that every keystroke is accurately transmitted, providing a reliable user experience across different operating systems. The KV3300 and KV5300 models further enhance performance with their scalable architecture, supporting daisy chaining for expanded setups, ideal for enterprise applications.

All models in the Black Box series are built with durability in mind, featuring robust construction that ensures longevity and reliability. They are also designed with user-friendly interfaces and remote management capabilities, allowing for easy configuration and maintenance.

Overall, the Black Box SW721 to SW725 and KV3000 to KV5300 series exemplify a commitment to innovation, offering high-quality AV and KVM solutions that cater to diverse user needs across various industries. Whether in corporate settings, educational institutions, or data centers, these products continue to set the standard for performance and reliability in multimedia switching and management.