1237c9dad48c
tech



Hello Jasen - 

CA>>>> This would also have to be a 'null' cable or this won't
CA>>>> work. 

WC>>>> Picked up that much along the way however I've been
WC>>>> persuaded to go parallel. 

RJT>>> The only thing about that to consider is that you can't
RJT>>> have that cable be real long. 

CA>> This is the "tech" echo terms like "real
long" belong in
CA>> the Linux echo. ;-) 

CA>> Parallel cable maximum length is 10 feet. 

JB> I've not had problems with a 5m parallel cable. (it's
JB> sheilded and has with twisted pairs....) 

We're dicussing file transfers here, not printing (low speed). 

CA>> Serial cable maximum length is 50 feet (longer lengths
CA>> cause com errors & garbage characters). 

JB> I've seen about 500m done at 9600 bps... going higher
JB> caused crosstalk and other errors, but they were only using
JB> telephone cable... I'm fairly shure it was RS232. but
JB> could'a been 20ma loop. 

Again, suitable for printing but not for file transfers. 

CA>> I made a 40 foot serial cable for myself and used to use
CA>> it at work. 

JB> I made one about that long out of scraps of wire - it
JB> worked OK for file transfers. but it didn't pass near any
JB> EMI sources. 

I made mine with shielded cable wiring and it would max out the
tranfer rates every time. ;-) 

RJT>>> but I've run stuff through multiple cables with
RJT>>> switchboxes in the middle without problems. And I do
RJT>>> happen to have a 25 foot printer cable, for odd
RJT>>> occasions. 

CA>> There are 'booster boxes' available for longer runs of
CA>> cable. 

JB> yeah, some of them do buffering and auto-switching too. 

I suppose so but we just need to cross one room here right now. 

>
>        ,                          ,
>      o/      Charles.Angelich      \o       ,
>       __o/
>     / >          USA, MI           < \   __\__
 

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