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x0x:headphonetesting [2016/01/28 18:05]
x0x:headphonetesting [2016/01/28 18:05] (current)
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 +===== Testing the Headphone and Mixer =====
  
 +Generally, this section is best tested when all the jumpers are attached.
 +
 +==== Headphone Testing ====
 +
 +Here is a list of voltages that should be seen on the LA4140. ​ The best way to test it is to set the x0xb0x to random mode and the volume full up. Make sure you do not have headphones connected.
 +
 +^Pin ^ DC Offset ^ AC Volts ^
 +|1 | 1v | 40mv |
 +|2 | 3v | 400mv |
 +|3 | 3v | 400mv |
 +|4 | 3v | 2v |
 +|5 | 0v | 0v |
 +|6 | 3v | 2v |
 +|7 | 6v | 0v |
 +|8 | 6v | 2v |
 +|9 | 3v | 0v |
 +
 +These values are approximate,​ variations of 10% should be expected.
 +
 +{{template>​.templates:​fabmenu}}
/home/ladyada/public_html/wiki/data/pages/x0x/headphonetesting.txt · Last modified: 2016/01/28 18:05 (external edit)