Black Box ACS4222A-R2-xx USB-HID device, Your mouse is moving like ‘hanging on a rubber band’

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TROUBLESHOOTING

or horizontally graduated colors – better use monochrome backgrounds. They allow higher compression -> higher frame rates.

Your mouse is moving like ‘hanging on a rubber band’

This problem derives from different single problems, which accumulate to a delay between the true mouse movement and displaying the movement of the mouse pointer on the screen. Depending to our measurements, a delay of approx. 100- 150msec are recognized as disturbing.

The total delay comes from (time values are approx. values):

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

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

•15 to 45mcec getting the graphic data into the local unit of the extender system and transmitting to the remote unit (60 to 20fps)

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

In total there are delay times between 85 and up to 230msec possible, where most of this delay is NOT caused by the extender system (Extender based delay is 5 to 15msec data transfer to the CPU and 15 to 45msec frame transfer to the remote unit

–in total 20 to 60mesec. Depending to our experiences, even a step from 100msec delay to 140msec (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 175msec. So (under special conditions) even the bare CPU/monitor link shows this ‘rubber band behaviour’. If you now insert an extender system, the problem may occur and is (in false) dedicated to the extender system, where it only gives a small part to 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.) Please use a lower resolution or use a desktop background which is better suitable for compression: Avoid photos for background or horizontally graduated colors – better use monochrome backgrounds. They allow higher compression -> higher frame rates. If – and only if the link has frame dropping, a reduction from 30fps to 60fps saves 17msec and from 20fps to 60fps saves 34msec.

USB-HID device

Your USB-HID device does not work

Although our interface supports HID devices, we can’t ensure that every connected device is running. In case of a malfunction please contact our technical support.

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Contents
DVI-D-Fiber-KVM-Extender Single and DualHead Manual Welcome to the DVI-D Fiber KVM-Extender Family Copyrights and Trademarks DVI-D Fiber KVM-EXTENDER Declaration of Conformity Safety Precautions and Installation Guidelines Contents Quick Setup Glossary IntroductionDVI-D Fiber KVM Extender system example Features Product Range Upgrade KitsDVI-D Fiber Extender Interface Compatibility CompatibilityHow to Use This Guide Package Contents InstallationACS2028A-R2-xx, ACS4022A-R2-xx additionally Interconnection Cable Requirements Power SupplySystem Setup DVI-D Fiber KVM-Extender Type ACS2009A-R2-xx Remote Unit DVI-D Fiber KVM-Extender Type ACS2009A-R2-xx Local UnitDVI-D Fiber KVM-Extender Type ACS2209A-R2-xx Remote Unit DVI-D Fiber KVM-Extender Type ACS2209A-R2-xx Local UnitDVI-D Fiber KVM-Extender Type ACS2028A-R2-xx Remote Unit DVI-D Fiber KVM-Extender Type ACS2028A-R2-xx Local UnitDVI-D Fiber KVM-Extender Type ACS2228A-R2-xx Remote Unit DVI-D Fiber KVM-Extender Type ACS2228A-R2-xx Local UnitConnect to 5V Power Supply DVI-D Fiber KVM-Extender Type ACS4001A-R2-xx Remote Unit DVI-D Fiber KVM-Extender Type ACS4001A-R2-xx Local UnitDVI-D Fiber KVM-Extender Type ACS4201A-R2-xx Remote Unit DVI-D Fiber KVM-Extender Type ACS4201A-R2-xx Local UnitDVI-D Fiber KVM-Extender Type ACS4022A-R2-xx Remote Unit DVI-D Fiber KVM-Extender Type ACS4022A-R2-xx Local UnitDVI-D Fiber KVM-Extender Type ACS4222A-R2-xx Remote Unit DVI-D Fiber KVM-Extender Type ACS4222A-R2-xx Local UnitDVI-D Fiber KVM-EXTENDER Diagnostic LEDs at DVI-D Fiber Extender Diagnostic LEDsLED Appearance DiagnosticsService Setup DDC Setup at the Local Unit Selection of Color depth Switching during Hsync Setup at the Remote UnitDefault Switching during VsyncPS2-Keyboard MonitorThere isn’t a picture ‘Stepping’ pictures on displaying moviesUSB-Keyboard/USB-Mouse PS2-MouseYour USB-keyboard/USB-mouse does not work Your mouse is ‘stepping’ on your screenYour mouse is moving like ‘hanging on a rubber band’ USB-HID deviceYour USB-HID device does not work Your USB- device does not work Other USB-devicesDVI-D Fiber KVM-Extender with optional, secondary screen Appendix a Example ApplicationsDVI-D Fiber KVM-EXTENDER Mounting instruction Mounting Instruction Rackmount-Kit ACS1009A-RMKDVI-D Fiber KVM-EXTENDER Mounting Instruction Rackmount-Kit ACS2228A-RMK DVI-D Fiber KVM-EXTENDER Dual head KVM devices and Media devices no USB Single head KVM devicesAudio Interface Set Up and Operation Shipping and Packaging Appendix D Calling Technical SupportBlack Box Technical Support Signal Levels Power requiredLocal Unit Connectors Remote Unit ConnectorsStorage Temperature Operating TemperatureSerial Speed Serial Data FormatPin Signal Appendix F ConnectorsPS2-KBD CLK PS2-MOUSE CLK PS2-MOUSE VCC-IN +5V Pin Keyboard Mouse PinKeyboard/Mouse Connector, USB Typ a Keyboard/Mouse Connector, USB Typ BKeyboard Pin Mouse Pin Connector deviceRS232 Singlehead Devices only CATx- Interface Pin out according to EIA/TIA 568A 1000BaseT
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