Black Box ACS235A, ACS236A manual Troubleshooting

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CHAPTER 7: Troubleshooting

7.Troubleshooting

7.1Things to Try First

Here are a few problems that sometimes occur in a ServSwitch™ Brand Fiber KVM Extender system, along with possible causes and solutions.

Problem: I can’t get a picture on my monitor screen.

Check the LEDs on the rear panels of the Extender units:

•If they’re lit: Is the monitor plugged in and turned ON? Is it in screen-saver mode? Is its cable loose?

•If they’re dark: Are the Extender units plugged into a working outlet? Is the CPU actually plugged in, turned ON, and running? Is the CPU-extension cable loose? Is the fiber cable loose? Are any strands of the fiber broken—at the remote site, can you see a small red dot when you hold each fiber connector up to a white sheet of paper? Is the fiber the right type (50/125-µm or 62.5/125-µm gradient-index multimode)? (If everything seems like it ought to be working, the power supplies of one or both Extender units might be damaged.)

Problem: The picture on my monitor screen rolls uncontrollably.

The monitor isn’t receiving a synchronization signal. The usual cause of this is plugging a color-signal fiber into the wrong port on an Extender unit (the red strand into the green port and vice versa, for example).

Problem: My keyboard, mouse, and printer don’t work.

Fiber 1 and fiber 2 might be loose or connected backwards at one of the Extender units. They might also be broken—at the remote site, can you see a small red dot when you hold each fiber connector up to a white sheet of paper? Is the fiber the right type (50/125-µm or 62.5/125-µm gradient-index multimode)?

Problem: My mouse works but my keyboard doesn’t.

The keyboard probably needs more current than the power supply can provide. Attach a keyboard whose power consumption does not exceed 100 mA.

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Contents ACS235A ACS236A Welcome to the ServSwitchTM Family Servswitch Brand Fiber KVM Extenders RADIO-FREQUENCY Interference Statements Servswitch Brand Fiber KVM Extenders NOM Statement Contents Table of Contents Specifications CableSpecifications Temperature Introduction OverviewComplete Package Configuring the ACS235A Configuring for RGB VideoImportant Notes Jumper Settings Setting the Jumpers in the Local Module Optional Locations of the ACS235A Local Module’s jumpersSetting the VGA/RGB jumpers Setting VGA-to-RGB jumper JP2 Setting the Jumpers in the Remote Module Optional Locations of the ACS235A Remote Module’s jumpersSync-on-color jumpers and diodes Setting gain-control jumper bank JP8 Setting Vsync jumper JP9 Configuring the ACS236A Locations of the ACS236A Local Module’s jumpers Setting video-handling jumpers JP2 and JP10 Locations of the ACS236A Remote Module’s jumpers Setting gain-control jumper bank JP8 Setting Vsync jumper JP9 Installation Guidelines and Limitations for Attaching Equipment1 CPU Keyboard and Mouse Connecting a CPU or KVM Switch to the Local Module Installation Servswitch Brand Fiber KVM Extenders Installation Running Fiber Cable Between the Local and Remote Modules Connecting Power to the Local and Remote Modules Powering Up the Rest of the SystemOperation Interpreting the Remote Module’s 7-Segment DisplayOperation Servswitch Brand Fiber KVM Extenders Troubleshooting Things to Try FirstCalling Black Box Shipping and PackagingConnectors on Both Models Appendix a PinoutsConnectors on the ACS235A Pin Signal Direction Connectors on the ACS236A Signal PinSignal Direction Appendix B Rackmounting the Extender Figure B-1. The RMK235 Rackmount KitFigure B-2. The rackmount assembly RMK235 shown Customer Support Information Welcome to the ServSwitchTM Family Servswitch Brand Fiber KVM Extenders RADIO-FREQUENCY Interference Statements Servswitch Brand Fiber KVM Extenders NOM Statement Contents Table of Contents Specifications Specifications Connectors ACS236A Introduction Complete Package Configuring the ACS235A Important Notes Jumper Settings Setting the Jumpers in the Local Module Optional Setting the VGA/RGB jumpers Setting VGA-to-RGB jumper JP2 Setting the Jumpers in the Remote Module Optional Sync-on-color jumpers and diodes Setting gain-control jumper bank JP8 Setting Vsync jumper JP9 Configuring the ACS236A Locations of the ACS236A Local Module’s jumpers Setting video-handling jumpers JP2 and JP10 Setting the Jumpers in the Remote Module Optional Setting gain-control jumper bank JP8 Setting Vsync jumper JP9 Installation 1 CPU Keyboard and Mouse Connecting a CPU or KVM Switch to the Local Module Installation Servswitch Brand Fiber KVM Extenders Installation Running Fiber Cable Between the Local and Remote Modules Connecting Power to the Local and Remote Modules Operation Operation Servswitch Brand Fiber KVM Extenders Troubleshooting Calling Black Box Appendix a Pinouts Connectors on the ACS235A Pin Signal Direction Connectors on the ACS236A Signal Direction Appendix B Rackmounting the Extender Figure B-2. The rackmount assembly RMK235 shown Page

ACS236A, ACS235A specifications

The Black Box ACS235A and ACS236A are advanced video and audio extenders designed to facilitate the transmission of high-quality multimedia signals over long distances, utilizing standard Ethernet infrastructure. These devices are essential for professional audio-video applications, such as conference rooms, classrooms, and broadcast studios, where reliable and high-definition signal distribution is crucial.

One of the standout features of the ACS235A and ACS236A is their support for high-definition video formats, including 1080p and 4K resolutions. This capability ensures that users can experience stunning visuals without degradation, even when transmitting over extensive distances. Both models utilize HDBaseT technology, which enables the transmission of uncompressed HD video, audio, control signals, and power over a single Cat5e/6 cable. This simplifies installation and reduces cabling costs while providing exceptional performance.

The ACS235A is equipped with HDMI input and output, making it ideal for connecting a variety of devices such as projectors, monitors, and media players. Its compact design allows for easy integration into existing setups without occupying excessive space. Additionally, it supports Power over Ethernet (PoE), meaning that it can receive power through the same cable that carries the data, enhancing flexibility in deployment.

Similarly, the ACS236A provides comprehensive support for audio and video formats and includes additional features such as RS-232 and IR control. This capability allows users to manage their equipment remotely, making it easier to control presentations or switch between multiple sources. The built-in LED indicators provide real-time status updates, making it simpler for users to monitor the system’s operation.

Both models are designed with durability in mind, incorporating robust housings and reliable connectors that ensure longevity even in demanding environments. Furthermore, they both support a wide range of operating temperatures, making them suitable for various installations, from corporate settings to educational institutions.

In summary, the Black Box ACS235A and ACS236A are powerful audio-video extenders that combine advanced technology with user-friendly features. Their ability to deliver high-quality signals over significant distances, along with remote control capabilities and efficient designs, makes them an excellent choice for anyone looking to enhance their multimedia installations.
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