Take a look here:
http://www.corningcablesystems.com/web/college/college.nsf/ehtml/index
There may be some interesting info in their tutoials and FAQ's.
It has been my experience, (unfortunate and costly experience), that any unprotected device in a system affects the entire system. I have had equipment that was “protected” destroyed by transients coming from seemingly insignificant peripherals.
I don’t think that there is any real protection...
For most WLAN installations, 60' outdoors should be no problem if there is an unobstructed line of sight between antennas.
As for what to watch out for:
1)If you are using externally mounted antennas, keep the cable runs as short as possible. Line loss is much greater at the higher frequencies...
PLCINTEGRATOR,
The scenario you lay out above would work in an office computing environment, but I am not sure it would work for field automation, where my focus has been lately.
Many existing devices in the field (i.e. RTU's, PLC,s flow computers, etc.) mainly support serial communications of...
I would like to get your opinions, and spur discussion on the role of wireless communications in the industrial control and automation arena.
Do you currently utilize wireless communications in your control systems?
If so, what type (i.e. serial radios, WLAN, integrated serial radio and RTU)...
Just as a thought:
If trenching for cable/conduit is prohibitively expensive, you can still do a wireless link around your obstruction. Have you ever looked at Motorola’s Canopy radio (http://motorola.canopywireless.com/) ? The cost isn’t too bad, installation is a snap, and they have point to...
Teligent tried it, and failed. Sprint tried it in Houston (BroadBand Direct), and failed. The issue is with signal power from the remote/user end. The main transmitter has the gain to get the signal out to the subscriber, but the subscriber modules typically do not have the power to get back to...
This may not be the proper forum for this question, but I thought I would try here first.
I have an issue with Internet Explorer.
First, the facts.
I am running Win 98 with IE 6.0.2800.1106, SP1 installed.
The problem:
When I click on the search icon, the search window comes up on the left...
None that I ever knew of.
I would suggest that when pulling drops, pull two of each while you are at it. It is easier to pull two now, then have to come back later and wish you had.
We use PathLoss.
I looked into Softwright, and other higher end propagation analysis tools, and I found they were too expensive and too complicated for what I needed to do. If I needed to design an entire metropolitan cellular or SMR system, these higher end tools would fit the bill and justify...
Try Allied Telesyn.
Here is a MM to SM converter, place one on each end.
Much cheaper than new fiber.
http://www.alliedtelesyn.com/allied/products/viewproduct.asp?category=3&id=97&country=2&lang=en
