HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 655)

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TNC 407/TNC 415/TNC 425 1 Introduction 01.98
1.1.4 Data transfer rate
The data transfer rate of an interface is given in 'BAUD' and indicates the number of bits of data
transmitted in one second.
1 baud =
[
1
Bit
s
]
Common baud rates are:
110, 150, 300, 600, 1200, 2400, 4800, 9600, 19200 and 38400 baud.
The time taken to transmit one bit (tB) can be calculated from the baud rate:
tB
t
"1"
"0"
tB =
1
Baud rate[
bits
s
]
For example, a baud rate of 19,200 baud will have a bit duration of tB = 52.083 s.
The number of characters transmitted can be calculated from the baud rate and the transmission
format:
Characters per second =
Baud rate[
bits
s
]
Number of bits per character
Example:
With a transmission format of seven data bits, one start bit, two stop bits and a data transfer rate of
exactly 300 baud:-
300 Baud
10 bits
= 30 characters per second
will be transmitted.