Manuals / Black Box / Computer Equipment / Network Hardware

Black Box dvi-d catx/fiver kvm extenders, ACS4011A-R2 manual USB-HID Device Errors, Other Errors

Models: ACS4004A-R2 ACS4002A-R2 ACS4002A-R2-SM ACS4004A-R2-SM ACS4004A-R2-MM ACS4011A-R2-MM ACS4011A-R2 dvi-d catx/fiver kvm extenders ACS4011A-R2-SM ACS4002A-R2-MM

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Chapter 5: Troubleshooting

Your mouse is moving like it’s “hanging on a rubber band“

This problem is usually a combination of things, which adds up to a delay between the true mouse movement and the movement of the mouse pointer on the screen. Delays of up to 100–150 msec can be annoying.

The total delay comes from (time values are approximate values):

•5 to 15 msec for mouse movement and data transmission to the CPU

•50 to 70 msec data processing time in the CPU until the refreshed data reach the graphics card output connector

•15 to 45 msec for transferring the graphics data into the local unit of the extender system and for transmitting to the remote unit (60 to 20 fps)

•10 to 100 msec data processing time in the display until the data is displayed on the screen (where 15 msec is normally only reached by CRT tubes)

Total delay times between 85 to 230 msec are possible. Most of this delay is NOT caused by the extender system. The extender- based delay is 5 to 15 msec of data transfer to the CPU and 15 to 45 msec of frame transfer to the remote unit—a total of 20 to 60 msec. Even a step from a 100 msec delay to a 140 msec (i.e. by inserting an extender system to a CPU-monitor link) may cause visible effects.

Please note that even a monitor directly connected to a CPU has a delay of 70 to 175 msec. So (under special conditions) even the bare CPU/monitor link can have this problem. If you then add an extender system, the problem may worsen and is falsely attributed to the extender system, even though the extender is only a small part of the total problem.

How to solve the problem: Use a display with a low delay time (NOTE: This is NOT the reaction time indicated by the manufacturer. This reaction time is only the time the display needs to switch a black pixel to get white or vice versa, but not how long it takes from receiving the data on the connector until they are displayed on the screen.) Use a lower resolution or use a desktop background that is better suited for compression: Avoid photos for background or horizontally graduated colors. It’s better to use monochrome backgrounds. They allow higher compression -> higher frame rates. If the link has frame dropping, a reduction from 30 fps to 60 fps saves 17 msec and from 20 fps to 60 fps saves 34 msec.

5.3 USB-HID Device Errors

Your USB-HID device does not work

Although our interface supports HID devices, we can't ensure that every connected device is supported. If you have problems, contact our FREE Tech Support.

5.4 Other Errors

Your USB- device does not work

You have connected a non-HID device to the HID port. For these ports, only HID devices are supported. (For example, on the ACS4002A-R2 model, there are six total USB ports at the remote unit. The two ports in the lower row are USB-HID only. Reconnect your USB device to one of the ports in the upper row.)

ACS4002A-R2

724-746-5500 blackbox.com

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Black Box dvi-d catx/fiver kvm extenders, ACS4011A-R2, ACS4002A-R2-MM, ACS4002A-R2-SM USB-HID Device Errors, Other Errors
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ACS4004A-R2, ACS4002A-R2, ACS4002A-R2-SM, ACS4004A-R2-SM, ACS4004A-R2-MM specifications

The Black Box ACS4002A-R2-MM and ACS4011A-R2-SM are part of an advanced series of DVI-D CATx/Fiber KVM extenders. These high-performance extenders bridge the gap between computer systems and remote displays, offering impressive solutions for various industries including broadcasting, digital signage, and corporate environments.

The ACS4002A-R2-MM model uses multi-mode fiber technology, enabling it to transmit video at high resolutions up to 1920x1200 at distances of up to 300 meters. It's designed for seamless integration into existing infrastructures, utilizing standard CAT5e cables in conjunction with fiber optics. This versatility ensures that installations are both efficient and cost-effective, making it ideal for expansive setups.

On the other hand, the ACS4011A-R2-SM variant specializes in single-mode fiber, pushing the transmission range even further. It can deliver high-definition video from a computer to a display up to a remarkable distance of 10 kilometers. This characteristic is particularly beneficial in large-scale operations, where the distance between systems can be considerable.

One standout feature of these KVM extenders is their ability to support DVI-D signals. This ensures immaculate video quality without degradation, which is critical for applications demanding high resolution and color fidelity. Both models also support USB pass-through, facilitating the connection of peripherals such as keyboards and mice. This enhances user experience, allowing for full control of the remote system from a distance.

In terms of installation, the ACS4002A-R2-MM and ACS4011A-R2-SM are designed for user-friendliness. They come with plug-and-play capabilities that simplify setup and minimize downtime. Furthermore, their robust design ensures reliable performance, even in challenging environments, making them suitable for various demanding applications.

The technologies embedded within the ACS4011A-R2-MM and ACS4011A-R2 offer dual power inputs for redundancy, ensuring that the systems remain operational during unexpected outages. This level of reliability is crucial for mission-critical environments where uptime is paramount.

Whether upgrading an existing video system or designing a new one, the Black Box ACS4002A-R2-MM and ACS4011A-R2-SM KVM extenders present a superior solution for high-performance video transmission, combining advanced features, impressive technologies, and unparalleled reliability.