[micro.ibm] PC cable lengths??

billb@ecsvax.UUCP (05/07/84)

I am considering building extensions to my keyboard and monochrome monitor
cables, so I can work on my porch....     (about 35 ft)
Does anyone have information on the upper length limits placed on these
cables?   How about types of wiring?
Thanks
Bill Boyarsky, Duke

julian@ecsvax.UUCP (05/10/84)

The connector to the keyboard seems to be a 4-wire shielded type, and it
is subject mainly to attenuation loss and maybe electrical interference,
depending on how you route the cable.  Since the signal output from a
keyboard is small, you may have a little trouble with it, but not knowing
what the electrical specifications for keyboard signal output -- who knows.
If you can provide the figures for signal output from the keyboard, the
expected signal input on the receptor in the micro, and the type of cable
being used (or loss in dB per foot), I will assist in applying the formula.

Phil Julian
ecsvax!julian

julian@ecsvax.UUCP (05/10/84)

I forgot to add -- there is no problem with the monochrome cable, assuming
that you have a coaxial cable connection.  There is almost no loss in coax
signal at so small a distance.

Phil Julian