<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body ><div>All the XLR type 3 pin connectors I've encountered had a way to assemble them to either connect or isolate the shell from pin one. Usually this is a separate solder tab or you have to remove the little bitty screw and turn the metal tab around the other way and reassemble it. Don't drop the little screw. It's usually non magnetic and skitters across the floor to someplace hidden. Old switchcraft connectors it is left hand thread. </div><div><br></div><div>Dale</div><div><br></div><div><br></div><div><div style="font-size:9px;color:#575757">Sent from my Verizon Wireless 4G LTE smartphone</div></div><br><br><div>-------- Original message --------</div><div>From: Richard Niederberg via Stagecraft <stagecraft@theatrical.net> </div><div>Date:03/12/2015 11:58 (GMT-05:00) </div><div>To: Steve Payne <mixedupsteve@gmail.com>,Stagecraft Mailing List <stagecraft@theatrical.net> </div><div>Subject: Re: [SML] XLR mic cables: Pin 1 to case/ground... yes? no? </div><div><br></div><div dir="ltr"><div>Is there a Lexan, or other non-conductive set screw, available, that could make the connector mechanically secure, but does not contribute to the 'pin 1' problem?</div><div>/s/ Richard</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Mar 12, 2015 at 6:11 AM, Steve Payne via Stagecraft <span dir="ltr"><<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><a href="http://www.rane.com/note151.html" target="_blank">http://www.rane.com/note151.html</a><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 11, 2015 at 3:24 PM, e-mail frank.wood95 via Stagecraft <span dir="ltr"><<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">In my world, there are two different ground connections. One is the<br>
safety ground, which comes with the mains supply from the sub-station<br>
where it meets the neutral. It is connected to all exposed metalwork.<br>
<br>
The other is the technical ground, which is usually derived from a<br>
substantial ground plate, sometimes buried under the car park. This is<br>
used for the cable screens of audio equipment when balanced wiring is<br>
used. If the wiring is unbalanced, it may form a part of the signal<br>
path, although this is not desirable.<br>
<br>
It is a firm rule that NEVER the two shall meet. When doing big<br>
installations, it was often the custom to connect a battery and buzzer<br>
brtween the two, with the incoming technical ground disconnected. If<br>
the buzzer went off, the standing instruction to the wiremen was to<br>
stop, and to disconnect their work in reverse order until it stopped.<br>
Then call an engineer to locate the fault.<br>
<br>
I remember one TV studio installation where there was a heavy hum<br>
signal on the technical ground, over the whole site. Serious experts<br>
were called in, who found 7A of ground fault current. By working<br>
nights, disconnecting whole areas one at a time, this was traced to<br>
the switching and routing centre. Detailed investigation revealed that<br>
the switch panels, supplied by an outside contractor, had not used the<br>
specified switches, and they all had to be re-made. After that, the<br>
problem went away.<br>
<br>
You can see that this eliminates all the problems at the design and<br>
build stages. There was also a policy that cable screens picked up the<br>
technical ground from the input of the gear they were connected to.<br>
Strictly applied, this eliminates hum loops.<br>
<br>
On some varieties of XLR connector, the shell securing screw actually<br>
drove into pin 1. This is bad news, as the shell inevitably picks up<br>
the safety ground from the connector panel, so linking the technical<br>
and safety grounds. My advice is to check all your XLR cables for this<br>
problem, and to re-terminate those that have the shell connected to<br>
pin 1.<br>
<br>
These general policies were formulated by the BBC, which was learning<br>
how to do this job back in the 1920s. They have proved sound ever<br>
since.<br>
<br>
On 11 March 2015 at 02:49, Jon Ares via Stagecraft<br>
<div><div><<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>> wrote:<br>
> On Tue, Mar 10, 2015 at 7:31 PM, tech dept <<a href="mailto:tech.dept@inbox.com" target="_blank">tech.dept@inbox.com</a>> wrote:<br>
>> It sounds like you bought the Beh------ unit. Well, I did and it is holding up well.<br>
><br>
> <sheepishly> I did. (The Beh----- cable tester, not the POS poopy,<br>
> buzzy, fuzzy 4-channel mixer that started this whole mess.) The cable<br>
> tester seems to work fine.... and I like the signal generator function<br>
> as well.<br>
><br>
> --<br>
> Jon Ares<br>
> <a href="http://www.arescreative.com" target="_blank">www.arescreative.com</a><br>
> Follow my twits @jon_ares<br>
><br>
> ____________________________________________________________<br>
> For list information see <<a href="http://stagecraft.theprices.net/" target="_blank">http://stagecraft.theprices.net/</a>><br>
> Stagecraft mailing list<br>
> <a href="mailto:Stagecraft@theatrical.net" target="_blank">Stagecraft@theatrical.net</a><br>
> <a href="http://theatrical.net/mailman/listinfo/stagecraft_theatrical.net" target="_blank">http://theatrical.net/mailman/listinfo/stagecraft_theatrical.net</a><br>
<br>
<br><span class="HOEnZb"><font color="#888888">
<br>
</font></span></div></div><span class="HOEnZb"><font color="#888888"><span><font color="#888888">--<br>
Frank Wood<br>
</font></span><div><div><br>
____________________________________________________________<br>
For list information see <<a href="http://stagecraft.theprices.net/" target="_blank">http://stagecraft.theprices.net/</a>><br>
Stagecraft mailing list<br>
<a href="mailto:Stagecraft@theatrical.net" target="_blank">Stagecraft@theatrical.net</a><br>
<a href="http://theatrical.net/mailman/listinfo/stagecraft_theatrical.net" target="_blank">http://theatrical.net/mailman/listinfo/stagecraft_theatrical.net</a><br>
</div></div></font></span></blockquote></div><br></div>
<br>____________________________________________________________<br>
For list information see <<a href="http://stagecraft.theprices.net/" target="_blank">http://stagecraft.theprices.net/</a>><br>
Stagecraft mailing list<br>
<a href="mailto:Stagecraft@theatrical.net">Stagecraft@theatrical.net</a><br>
<a href="http://theatrical.net/mailman/listinfo/stagecraft_theatrical.net" target="_blank">http://theatrical.net/mailman/listinfo/stagecraft_theatrical.net</a><br></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature">/s/ Richard<br>_________</div>
</div>
</body>