What is the maximum data transfer rate of serial data when communicating with an EDAS COM port?
EDAS COM ports support baud rates from 300 to 115,200 bits per second. The maximum continuous throughput (streaming of data through the serial port) supported by the unit is 31,000 bits per second (31k baud). EDAS COM ports can acquire data at baud rates higher than 31k baud when data is acquired in samples of limited size. Otherwise, over-runs may occur. Regarding EDAS units with multiple COM ports, note that the maximum continuous throughput of any one of an EDAS unit’s COM ports will be 31k baud divided by the number of active ports (assuming all ports in continuous use, at the same baud rate). For example, on a unit where all four COM ports are active and in continuous use, the maximum continuous throughput for each port is 7750 bits per second. (This test was performed on an isolated Ethernet with no other network traffic. When the same test was done with the unit connected to Intelligent Instrumentation’s company network, throughput was typically reduced by 3-5%.
