Black Box ACS236A, ACS235A manual Important Notes

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SERVSWITCH™ BRAND FIBER KVM EXTENDERS

the JP1, JP2, and JP3 locations to deactivate the decoupling diodes (so that the Remote Module leaves the sync signals on the color signals), and remove the jumpers at JP9 and JP12 to disable VSYNC and force the sync polarity signals negative (see Sections 3.3.1, 3.3.3, and 3.3.4).

CAUTION!

You can only connect an RGB monitor to a VGA source if the monitor is able to process the source’s synchronization frequency; for example, the monitor of a graphic workstation with horizontal bandwidth of 40 to 90 kHz probably won’t work with a VGA graphics adapter that has a resolution of 640 x 480 = 31.5 kHz.

3.1.3RGB VIDEO SOURCE TO RGB MONITOR

To connect an RGB video source to an RGB monitor, set the Local Module’s JP6, JP10, and JP11 jumpers all to the “RGB settings” (the ones opposite the factory defaults; see Section 3.2.1). At the Remote Module, install jumpers at the JP1, JP2, and JP3 locations to deactivate the decoupling diodes (so that the Remote Module leaves the sync signals on the color signals; see Section 3.3.1).

3.1.4RGB VIDEO SOURCE TO VGA MONITOR (RGB TO VGA CONVERSION)

To connect an RGB video source to a VGA monitor, set the Local Module’s JP6, JP10, and JP11 jumpers all to the “RGB settings” (the ones opposite the factory defaults), but leave jumper JP2 in its factory setting so that HSYNC, not CSYNC, is transmitted on the HSYNC lead. Remove the Remote Module’s JP12 jumper in order to force polarity negative. See Sections 3.2.1 and 3.3.4. In this application, the Remote Module also functions as a sync stripper: It strips the sync signals from the color signals, separates them, and presents them as normal TTL signals to the VGA monitor.

IMPORTANT NOTES

You can only connect a VGA monitor to an RGB video source if the monitor is able to process the source’s synchronization frequency; for example, a multisync monitor with horizontal bandwidth of 30 to 90 kHz probably won’t work with a WF470 graphics adapter that uses a frequency of 15.625 kHz.

The Extender can not generate the special VGA-standard phase relation required by some types of dual-scan monitors (LCD panels, etc.).

Be aware that, because of the way some RGB cards output sync signals, it is possible that, despite how the jumpers are set in your Local Module, your monitor will still receive CSYNC on its HSYNC lead as well as VSYNC on its VSYNC lead. Some VGA monitors have no problem with this, but others will suffer from distorted displays. If your monitor is affected by this distortion, you can suppress the VSYNC signal by removing the Remote Module’s JP9 jumper; the monitor should work fine using CSYNC only. See Section 3.3.3.

Siemens® users: The Extender can process CP581 signals, but this requires special cabling. Call Black Box for technical support.

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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 Cable SpecificationsSpecifications Temperature Overview IntroductionComplete Package Configuring for RGB Video Configuring the ACS235AImportant Notes Jumper Settings Locations of the ACS235A Local Module’s jumpers Setting the Jumpers in the Local Module OptionalSetting the VGA/RGB jumpers Setting VGA-to-RGB jumper JP2 Locations of the ACS235A Remote Module’s jumpers Setting the Jumpers in the Remote Module OptionalSync-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 Guidelines and Limitations for Attaching Equipment Installation1 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 Powering Up the Rest of the System Connecting Power to the Local and Remote ModulesInterpreting the Remote Module’s 7-Segment Display OperationOperation Servswitch Brand Fiber KVM Extenders Things to Try First TroubleshootingShipping and Packaging Calling Black BoxAppendix a Pinouts Connectors on Both ModelsConnectors on the ACS235A Pin Signal Direction Signal Pin Connectors on the ACS236ASignal Direction Figure B-1. The RMK235 Rackmount Kit Appendix B Rackmounting the ExtenderFigure 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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