External keyer on accessory port doesn't work

  • 1
  • Problem
  • Updated 3 years ago
  • Solved
  • (Edited)
Hello,

I built a db15-3 plug for my 6300 accessory port. I would like to wire my contest interface (the one you can see below) connecting positive wire to pin 4 and ground to pin 5. I am sure that all connections are correct as I checked them more times using a digital tester.
The problem is that my 6300 isn't keyed in any way: nor connecting the interface nor connecting a straight key.
I don't think I need some trick configuration somewhere in SSDR as in the manual is stated that pin 4 is always enabled.
Really I can't figure out where I am wrong.
Any suggestions?

Thank you and 73'
Enzo
iw7dmh

Photo of IW7DMH, Enzo

IW7DMH, Enzo

  • 334 Posts
  • 82 Reply Likes

Posted 3 years ago

  • 1
Photo of IW7DMH, Enzo

IW7DMH, Enzo

  • 334 Posts
  • 82 Reply Likes
Official Response
Well, I finally solved :)

I was using pin 5 for grounding my interface but it didn't worked on my 6300 unit.
So, before desolder my connector, I made the clip test on pin 10 and it work as expected.
This time I built my own connector because in my first attempt I tryed to use and old Vga cable, but at the end of my work I found that pin 4 was unused. It seems it happens to most of low quality (or very slim) commercial Vga cable.
I will also consider to use an opto-isolator as suggested by Ken and to buy a db15 board as Steve suggested.
Just a note for Flex hardware reference manual editor: on page 34 the connector is printed upside-down (or in my flex 6300 it is mounted upside-down). Also in paragraph 7.4.5 the pin 5 is reported as ground pin but it seems it is not right.

I am very glad to be a member of this community. It is like a big family.
Really thankĀ  a lot for your help

Best regards
Enzo
iw7dmh
(Edited)