Distance Limitations
3
Hardware Installation Guide
3-3
Hardware User’s Guide
Balanced drivers allow RS-449 signals to travel greater distances than RS-232.
Table 3-2 lists the standard relationship between baud rate and maximum distance
for RS-449 signals. These limits are also valid for V.35 and X.21.
Table 3-1. IEEE Standard RS-232 Transmission Speed Versus Distance
Baud Rate
Distance
(Feet)
Distance
(Meters)
2400
200
60
4800
100
30
9600
50
15
19200
25
7.6
38400
12
3.7
RS-232 is often used in violation of these specifications. If you
understand the electrical problems that can arise and can
compensate for them, you might be able to get good results at
distances greater than those shown in Table 3-1; however, do so at
your own risk. We recommend that you stay within the standard-
defined distance.
!
CAUTION
