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av:japanese_rgb-15 [2014/08/24 04:36]
eidis
av:japanese_rgb-15 [2019/08/27 20:45] (current)
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 ====== Japanese RGB-15 Connector ====== ====== Japanese RGB-15 Connector ======
-This connector is the standard for many pre-DOS/V (IBM compatible) computers in Japan. ​ The PC-9801, X68000 and FM Towns all used this pinout, or similar variants of it.  **Pay attention to the differences,​ they are important!**+This connector is the standard for many pre-DOS/V (IBM compatible) computers in Japan. ​ The PC-9801, X68000 and FM Towns all used this pinout, or similar variants of it.  ​ 
 + 
 +**<color indianred>​Pay attention to the differences,​ they are important!</​color>​**  ​Specifically,​ watch the Ys line.  This is a 5V signal from the machine that tells the monitor a computer is actively sending video. ​ Without this signal many monitors will not attempt to show anything, and my NEC monitor simply goes into standby. ​ Since many devices don't include 5V (for example, VGA) you may have to add this yourself. ​ I wired mine to a USB connector, and plug that in to any USB device to activate the monitor.  ​
  
 **NOTE** the numbers are usually visible on the connector itself. ​ If you're looking at the business end of the female connector, pin 1 is on the right. ​ On a male connector it's on the left. **NOTE** the numbers are usually visible on the connector itself. ​ If you're looking at the business end of the female connector, pin 1 is on the right. ​ On a male connector it's on the left.
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   * Not all systems put out power on pin 7.  Normally +5v, some devices (like the X-RGB2) leave this pin disconnected. ​ You can add power to your cables, for monitors that require it, following [[adding_5v_to_scart_lead|these directions]].   * Not all systems put out power on pin 7.  Normally +5v, some devices (like the X-RGB2) leave this pin disconnected. ​ You can add power to your cables, for monitors that require it, following [[adding_5v_to_scart_lead|these directions]].
   * Remember that the pin numbers are almost always found on the connector itself.   * Remember that the pin numbers are almost always found on the connector itself.
 +  * CRITICAL: H and V sync are TTL level (5Vpp) If you make a SCART cable and tie pins together, you must use a resistor (470ohm - NOT CONFIRMED) to lower voltages to safe levels for 75ohm / 0.3Vpp CSYNC or else you’ll damage the X68K or your display device (eg XRGB mini)
  
 ---- ----
 **Credit:** **Credit:**
   * Some of this info came from [[http://​hp.vector.co.jp/​authors/​VA018718/​towns/​connect/​pinasgn.htm|this Japanese page]].   * Some of this info came from [[http://​hp.vector.co.jp/​authors/​VA018718/​towns/​connect/​pinasgn.htm|this Japanese page]].
 
 av/japanese_rgb-15.1408819016.txt.gz · Last modified: 2019/08/27 20:44 (external edit)
 
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