No what you linked to does NOT do the same.
Have a merry Christmas Day Mottie.
Merry Christmas to you too, mattylad.
Cable Tracker with Tone Generator
- Thread starter honestworker
- Start date
Merry Christmas to you too, mattylad.
Hah hah yes. we had a job some 25+ years back where a rack had been removed and the cables reterminated in another rack. No idea what skills the guy had but he had managed to terminate them incorrectly - the lights flashed in sequence but out of step with each other. The kit we patched to it simply didn't work and of course patching back so the 2 halves of the tester were side by side the flip was cancelled out. It took some head scratching until I used a tone tracer to prove a cable one pair at a time.
Lights out of sequence (e.g. 1-2-3-4-5-6-7-8 on one side and 1-2-4-3-5-6-7-8 on the other) means swapped wires.
Two or more lights on at the same time means two wires shorted together, missing light is wire open (not at all).
Two or more lights on at the same time means two wires shorted together, missing light is wire open (not at all).
Some of mine, ran for miles down river banks, level sensing, alarms, and telemetry. I devised a pair of army surplus telephones to help with the job.
I once wasted a lot of time when I didn't spot that it was showing 12345678 at one end and 87654321 at the other.
When they are a great didstance apart and it ran
1-2-3-4-5-6-7-8 on one side and
5-6-7-8-1-2-3-4 on the other
how many would instantly question it?
On the unit I have there are 4 leds marked
1&2-3&6-4&5-7&8
Flashing green = good, red = flipped, out of sequence = out of sequence, dark = one or both wires missing
Years ago I made a manual version to test leads, basically a box divided down the middle as send and receive sides with 10 LEDs side by side and a rotary switch to light each in turn on one half. I fitted pretty much every type of socket up to 9pin + enclosure used in AV work at the time except 8P8C and speakon but soon made a few adaptor cables.
That's fairly obvious because there is a pause when it wraps around from 8 to 1.
But is the gap for 9 really that obvious when it happens?
The only reason I ask the question is as always the experience.
Yes - It's a ten output counter type chip, so between 8 and 1 there is a double count gap.
Just like your wafer switches, except automated switching.
I see the tester in the earlier pic and believe I identify it as 'one I've handled' and seriousely don't recall it as a count of 10 by the perceived gap, only to 9, however this wasn't recent but initially the error went unoticed.
Some of the early testers of course only had 8 LEDs in which case it didn't show and that job may very well have been one of those.
The experience being we had some sockets in a system incorrectly wired - shades of the colours was blamed - but in reality I believe we established is was different punchdown layout of different manufacturers sockets (probably posher socket faceplates in the bosses offices).
Maybe 9 then, mine is tucked away in the loft.
I'm sure there are numerous variations by now anyway.
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