> -----Original Message-----
> From: RoboMower@yahoogroups.com [mailto:RoboMower@yahoogroups.com] On
> Behalf Of khawn
> OK. Now I am confused. All Batteries use DC power. Are you saying
> that my perimeter box is changing the current to AC?
Yup, that's what I'm saying.
AC only means that it's Alternating Current, not Direct Current. There are
all kinds of AC. It's AC, but don't assume that it's turned into your
normal house current.
There are also all sorts of AC meters. Most of them are designed for
50/60Hz household current, so it's possible to get one without enough
frequency range to read anything.
Again, if you're trying to figure out how to find a wire break you'll find
some good procedures in messages here. Below is a procedure I posted
sometime last year. There are also other methods posted somewhere that
don't require a tone generator.
I had some landscapers that cut my perimeter wire in two places! They
weren't even places they should have been digging. I think they play with
their shovels, poking them in the ground.
I used a tone generator and tone detector. You can get one at Home Depot or
any electronics store where phone/network install equipment is sold. It is
really for identifying wires. You put the tone generator on one end of the
wire and use the wand to check a bundle of wires to identify the one with
the tone on it.
I have that kind of tool around anyway. They're not cheap, but they are
well under $100. Go to www.homedepot.com and enter "701k" in the search
field for an example. If you have a friend who does phone or network work
he'll likely have one you can borrow for a few minutes.
Here is what I did:
1. Unplug the perimeter wire connector from the perimeter switch.
2. Connect the tone generator to *one* of the perimeter wire ends.
3. Use the tone pickup wand to confirm you have tone on the connected
wire, and no tone on the other wire.
4. You will be tempted to follow the tone wire to look for the break. A
much faster way to find it is to walk across the yard and check for tone
about half way around the perimeter.
5. If you have tone at that location, walk to a point about half way into
the remainder of the wire and check. If you don't have tone, back up half
way to the start.
Continue to check until you narrow the length of wire down and you can find
the break quickly.
> I need a link to find a tone generator.
Go to www.homedepot.com and enter "701k" in the search field (top of the
screen, right hand side). I could post the link I get but the link is
specific to the session so they can keep up with your shopping cart. Here's
Classic Tone & Probe Kit
Use the procedure I posted earlier. Connecting just one wire of the
generator to the probe works fine, but if you want you can clip the other
wire on the metal docking station stake.
> I believe Tyler's "old school way" is to strip points on the perimeter
> wire and jump another wire across to another point until your
> transmitter will show a completed circuit. This is how RoboMower
> documentation solves it. It's not too much fun if you've had a
> lighting strike to a zone, though (with multiple breaks)!
That would work well also, but the tone generator is completely unintrusive.
No wire to drag around, no nicks left in the wire and it only takes a second
to test a location.
Downside it's about $85, but everybody should already have one<g>.