Black Box ACS236A, ACS235A manual Setting Vsync jumper JP9

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SERVSWITCH™ BRAND FIBER KVM EXTENDERS

4.2.2VSYNC ENABLE/DISABLE JUMPER JP9

It is possible to use the Extender to connect a VGA monitor to a legacy Sun computer that outputs Sun video with CSYNC superimposed on the green signal. (If you do this, make sure that jumpers JP2 and JP10 in the Local Module are both installed; see Section 4.1.1.)

In this situation, depending on the computer, the Remote Module might express only CSYNC (composite sync) on the HSYNC lead of its VGA connector, or it might express both CSYNC on HSYNC and VSYNC (vertical sync) on the VSYNC lead. If your VGA monitor works fine even with both signals coming through, leave jumper JP9 installed (the factory-default setting). But if your VGA monitor’s picture becomes distorted if the monitor receives both CSYNC on HSYNC and VSYNC on VSYNC, remove jumper JP9 as shown in Figure 4-7. This causes the Remote Module to suppress the VSYNC signal so that only CSYNC is expressed. Most VGA monitors, including most of those that have problems when they receive both signals, work well using the CSYNC signal alone.

CSYNC and VSYNC	CSYNC only,
(factory default)	VSYNC disabled

JP9

InstalledRemoved

Figure 4-7. Setting VSYNC jumper JP9.

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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