UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

julie_m · 27th Sep 2019, 2:42 pm

The audio output will be on pins 3 and 5, with 2 common. A 7-pin DIN socket might additionally carry video on pin 6 (in) and 7 (out).

Note the pins are NOT numbered in order 1-2-3-4-5-6-7 as you might naïvely expect, but 6-1-4-2-5-3-7; this is because the original standard was 3 pins for two-way mono audio with a common earth, then later pins 4 and 5 were added to give stereo audio but a 3-pin plug would still fit the 5-pin socket, and even later pins 6 and 7 were added for additional signals.

27th Sep 2019, 2:42 pm	#38
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: Ferguson 3V55 Videostar VCR The audio output will be on pins 3 and 5, with 2 common. A 7-pin DIN socket might additionally carry video on pin 6 (in) and 7 (out). Note the pins are NOT numbered in order 1-2-3-4-5-6-7 as you might naïvely expect, but 6-1-4-2-5-3-7; this is because the original standard was 3 pins for two-way mono audio with a common earth, then later pins 4 and 5 were added to give stereo audio but a 3-pin plug would still fit the 5-pin socket, and even later pins 6 and 7 were added for additional signals. __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.