Black Box ACS235A, ACS236A manual Setting gain-control jumper bank JP8

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CHAPTER 4: Configuring the ACS236A

4.2.1REMOTE GAIN-CONTROL JUMPER BANK JP8

If you’ll be using automatic gain control (AGC) in your Extender system, leave the jumpers ON the right-handposts of each of the three pairs of JP8 jumper posts, as shown below. (This is the factory-default setting as well as the recommended setting.) But if you’ll be controlling the gain manually (see Section 6.2), which is necessary with VGA input and Sun output (see Section 4.1.1), move the jumper to the left-handposts of each of the three JP8 jumper-post pairs, as shown in

Figure 4-6.

When you have AGC selected, the Remote Module ignores the gain-control screwdials on its rear panel and automatically adjusts the gain of each of the three color signals, which is possible because each of the signals has the same white reference value (0.7 Vpp) that the Module can use for comparison. If the colors of the picture on your monitor still seem a little off, you can tweak them with the Remote Module’s brightness and contrast controls, in addition to any color controls on the monitor itself.

When AGC is turned off, the Remote Module’s gain-control screwdials become activated, and you can use them to control the gain of the corresponding colors. (Be aware that when you’re in this mode, chromatic aberrations can affect your display.) Adjust the gain and check your adjustments by either watching the monitor or, to get best results, by using an oscilloscope. See Section 6.2. As always, you can also use the Remote Module’s brightness and contrast controls. We don’t recommend that you turn AGC off unless (a) you are using VGA input with Sun output, or (b) you have a color problem that you can’t seem to solve by any other means.

Whichever way you set these jumpers, make sure that jumper JP3 in the Local Module is set the same way.

With AGC (factory default)

 

 

 

 

 

 

 

Without AGC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Jumpers on left-hand posts

 

 

 

Jumpers on right-hand posts

Figure 4-6. Setting gain-control jumper bank JP8.

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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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