The maximum date rate, which may be used for EIA-232 connections, is primarily determined by the quality and length of the interconnecting cable. The quality of the cable (for transmission purposes) is generally determined by the capacitance per foot rating of the cable.
The data rate vs. cable length table gives the recommended maximum cable length for a given baud rate. Longer cables may be implemented at your discretion.
|
Baud Rate |
Maximum Cable Length |
|
57,600 or less |
100 feet |
|
115,200 |
80 feet |
|
230,400 |
40 feet |
|
460,800 |
20 feet |
|
921,600 |
|
Notes:
The maximum length is the amount of cable that is connected to a Digi-supplied interconnect device, such as Quad or Octa cables and boxes.
The maximum length is based on a cable rated at:
12.3 pF/foot, conductor to conductor
22.4 pF/foot conductor to shield