[GreenKeys] WU 9797 LESU Jacks TR or TS?

[Nick England]

Use only a 2-conductor plug - tip/sleeve.
None of this new-fangled TRS stuff like on your Koss Pro/4 stereo headphones

Nick England K4NYW
www.navy-radio.com


On Fri, Dec 2, 2022 at 8:40 PM W2HX <w2hx at w2hx.com> wrote:

> Ok, I am learning a lot about how this is connected. For 15 years this ASR
> just worked, I never had to worry about it so I never had to learn about
> how it is wired up. I have a question for those of you who are familiar
> with this LESU.  I have a 60mA meter (newly crafted) that works great when
> I plug it into my external jack field for my ST-6. Reads about 55mA sounds
> good to me. I then plugged in the meter into the BJ, RJ and PJ expecting to
> see something. However I saw zero current and the act of inserting the plug
> (of the meter) into PJ caused the printer to run open (and I know my meter
> is not open!).  Also BJ showed zero bias which I don’t think is the case.
>
>
>
> So I got to thinking. Maybe the plug on the meter isn’t “compatible” with
> these jacks on the LESU. I am using what I believe to be fairly standard
> TRS plugs and I am using the Tip and Ring for the loop. Can anyone tell me
> if, perchance, the jacks in the LESU are expecting something else, perhaps
> Tip and Sleeve? That could explain what I’m seeing? Anyone know?
>
> https://w2hx.com/x/TTY/43A-1%20Test%20Meter/20221202_203627.jpg
>
>
>
>
>
> 73 Eugene W2HX
> Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos
>
>
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