Home |
Search |
Today's Posts |
#12
posted to rec.boats
|
|||
|
|||
Thanks guys - for the laptop help!
On Thu, 30 Mar 2017 19:56:37 -0000 (UTC), Bill
wrote: We lost Macy's California Point of Sale terminals to IBM because your sales guy was smarter. Our sales guy tole Macy's that the data lines had to go via conduit because of the fluorescent lights. IBM guy said their did not need conduit. He knew the fire department required conduit. Smarter. That must be a California thing. If you use plenum rated cable, properly supported, I know of no fire reg that requires conduit for low voltage ... and we never had a problem with fluorescent lights, in spite of the urban legend that would not die. All of our signal cables were balanced pairs, pretty much immune to the switcher in an electronic ballast. Sixty hz was never a problem (magnet ballast). I had 100' of UTP Cat 5 coiled above my desk right on a fluorescent and I could patch it into any LAN, 3270, S-loop or whatever at the panel to prove it to the non believers. You could also watch the data going by on a scope if you wanted. There were lots of urban legends that got dispelled in the late 80s when IBM got serious about selling data cabling, LAN management and communication contracts. Some of us went to school on it. They had a very cool lab in Dallas where we could learn about just about anything that goes down a wire. That part was mostly how to do the phone company's job (breaking the finger pointing tie). That was followed up by BICSI training for the guys like me who were actually trained for writing wiring contracts. |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
New laptop... | General | |||
Wind guys versus bat guys... | General | |||
GPS and Laptop | General | |||
Laptop | Cruising | |||
GPS on my laptop | ASA |