Tools for Stagecraft and TMB amongst other testers with ways to do this in live
power or before plugging it in seemingly.
Main question, seven position
switch, perspectively has a "off" and all six circuits for
continuity between the circuits. In theory such a thing would also light up to other circuits shorted to if shorted. What about a short to
ground?
Pin one in testing a
circuit, needs to test to all 14 or 19 wires for both
continuity between pin 1 and pin 1, and all other 19 other pins for a short. As above, a high resistance short often will not be detected by way of just plain obserable resistance from indicator lights. Also, it doesn't "idiot proof" someone just spinning
thru the dial in testing the cable without looking for a "fault/short." And again, most multi-position switches, are
drop sensitive - meaning if you
drop the tester off the table and it falls on the
switch lever - it's broken. So you have to protect that rotary dial
switch. This assuming a rotary
switch tester type.
Lex tester I did not try, TMB in-line did try and not a fan of. If testing a cable, it should be before testing in live
voltage testing to see if a problem of.
Next problem for my past testers in being non-line
voltage testing... people
line voltage usage of them. Ciruit protection in this conplex tester, a good thing in otherwise blowing it up, this with the battery chargers to it
etc.
Overall, you need to test all conductors in referenece to another during testing. The Lex might do this, but am I seeing it needs live
power in not reading into it? Short to
ground? Best test of cable is before it's plugged into live
power. Electronically testing the cable so it self tests see's all conductors in relation to each other would be quickest and safest. TBA invented.