Cloud Electronics CDI-S100 - Manual (Page 11)

CDI-S100 Installation Guide v1.0 11
APPENDIX
Cable lengths
RS-232C serial communication can use either
shielded or unshielded cable. The longest cable
run that can be practically used for error-free
operation in a given installation will depend on
several factors: cable type, the baud rate used
and the amount and type of electrical noise
present in the cable’s vicinity.
A realistic figure for maximum cable length
is 250 ft. (76 m.) using good-quality shielded
cable and 100 ft. (30 m.) using unshielded cable,
at 9600 baud (the most common data rate).
However, the figure may be higher or lower in
a particular installation.
Lowering the baud rate will permit significantly
longer cable runs to be used.