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| [[Image:13W3_Stecker.jpg|thumbnail|molded DB13W3 connector.]] | | [[Image:13W3_Stecker.jpg|thumbnail|molded DB13W3 connector.]] |
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− | 13W3 or DB13W3 is a is a particular style of the D-subminature family of connectors. It has the same width as a DB25 connector but instead of 25 small pins it is comprised of 13 total pins, 10 small pins and 3 larger coaxial connectors. This connector is primarly used as an analog video connection for workstation monitors by [[Silicon Graphics]], [[Sun Microsystems]], [[IBM]], [[Apple Computer]] and others. | + | 13W3 or DB13W3 is a is a particular style of the D-subminature family of connectors. It has the same width as a DB25 connector but instead of 25 small pins it is comprised of 13 total pins, 10 small pins and 3 larger coaxial connectors. This connector is primarily used as an analog video connection for workstation monitors by [[Silicon Graphics]], [[Sun Microsystems]], [[IBM]], [[Apple Computer]] and others. |
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| The 13W3 connector has greater noise rejection for the three video signals since the video signals use miniature coaxial connections. | | The 13W3 connector has greater noise rejection for the three video signals since the video signals use miniature coaxial connections. |
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| Vendors made their own pinouts instead of having a single established standard. This wasn't a problem for users during most of the hardware's first life. In general these users would buy a workstation complete with monitor from a single vendor. Even if there were Sun and SGI workstations in a company, matching monitors were purchased with the workstation and the workstation + monitor was treated as a single unit. | | Vendors made their own pinouts instead of having a single established standard. This wasn't a problem for users during most of the hardware's first life. In general these users would buy a workstation complete with monitor from a single vendor. Even if there were Sun and SGI workstations in a company, matching monitors were purchased with the workstation and the workstation + monitor was treated as a single unit. |
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− | In the second hand market and hobbiest environment the monitors are not always kept together with the workstations and compatibility has surfaced as a issue. New LCD monitors take less space, produce less heat and often have better image quality, especially as the old CRTs are banged up and are out of adjustment. | + | In the second hand market and hobbyist environment the monitors are not always kept together with the workstations and compatibility has surfaced as a issue. New LCD monitors take less space, produce less heat and often have better image quality, especially as the old CRTs are banged up and are out of adjustment. |
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− | One frustrating point for hobbiests comes from Sun and SGI monitors being Sony made units which look the same except for logos and color, but not working properly with workstations of another name. Some forum members found that opening the monitor and disconnecting the wires that head to the 10 smaller pins is possible if you can stand to lose monitor sense and have SOG output. You need to accept the risk of electric shock before opening your monitor. Insulating the cable end with good electrical tape so it doesn't flop around is recommended. | + | One frustrating point for hobbyists comes from Sun and SGI monitors being Sony made units which look the same except for logos and color, but not working properly with workstations of another name. Some forum members found that opening the monitor and disconnecting the wires that head to the 10 smaller pins is possible if you can stand to lose monitor sense and have SOG output. You need to accept the risk of electric shock before opening your monitor. Insulating the cable end with good electrical tape so it doesn't flop around is recommended. |
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| ==Adapters== | | ==Adapters== |
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| ==13W3 Pinout== | | ==13W3 Pinout== |
− | The following table summarizes the common pinouts to compare against existing adapters to check compatibility or build your own adapter/cable. If your monitor is capable of Sync on Green you should have no problem connecting only the 3 video signals and ground (A1, A2, and A3). If your monitor requires horizontal and vertical sync signals (H/V) you'll need to connect additional lines. For monitor detection you'll need some more lines, but varries by vendor and whether DDC is supported or not. | + | The following table summarizes the common pinouts to compare against existing adapters to check compatibility or build your own adapter/cable. If your monitor is capable of Sync on Green you should have no problem connecting only the 3 video signals and ground (A1, A2, and A3). If your monitor requires horizontal and vertical sync signals (H/V) you'll need to connect additional lines. For monitor detection you'll need some more lines, but varies by vendor and whether DDC is supported or not. |
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| [[Image:DB13W3_Pinout.svg.png]] | | [[Image:DB13W3_Pinout.svg.png]] |
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| ==References== | | ==References== |
| http://media.extron.com/download/files/userman/13w3vgaadapter-man-b.pdf<br> | | http://media.extron.com/download/files/userman/13w3vgaadapter-man-b.pdf<br> |
− | http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi?db=bks&fname=/SGI_EndUser/Onyx_3K_OG/sgi_html/ch02.html#id5189797<br>
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− | http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi/linux/bks/SGI_Admin/books/1400Servr_MG/sgi_html/ch04.html#id5447995<br>
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− | http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi?coll=hdwr&db=bks&fname=/SGI_EndUser/books/Octane2_OG/sgi_html/apb.html#id5488876<br>
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− | http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi?coll=hdwr&db=bks&fname=/SGI_EndUser/books/Indy_OwnerGd/sgi_html/apa.html#id5467504<br>
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| http://www.raphnet.net/electronique/sync-on-green/sync-on-green_en.php | | http://www.raphnet.net/electronique/sync-on-green/sync-on-green_en.php |
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| [[Category:SGI]] | | [[Category:SGI]] |
| + | [[Category:Definitions]] |