502
442704/A
Baud Rate
Use this setting to specify the baud rate ("speed") for the serial communication. The
standard baud rate defined for NMEA serial line communication is 4800 baud.
In digital communications,
symbol rate
, also known as
baud rate
and
modulation
rate
, is the number of symbol changes, waveform changes, or signalling events,
across the transmission medium per time unit using a digitally modulated signal
or a line code. The symbol rate is measured in
baud
(Bd) or symbols per second.
In the case of a line code, the symbol rate is the pulse rate in pulses per second.
Each symbol can represent or convey one or several bits of data. The symbol rate
is related to the gross bit rate expressed in bits per second.
https://en.wikipedia.org/wiki/Symbol_rate
Data Bits
Use this function to specify the number of data bits for serial communication. The
standard number of data bits defined for NMEA serial line communication is 8 (eight).
Parity
Use this function to specify the parity for the serial communication. The standard
parity defined for NMEA serial line communication is "None".
A
parity bit
, or
check bit
is a bit added to the end of a string of binary code that
indicates whether the number of bits in the string with the value one is even
or odd. Parity bits are used as the simplest form of error detecting code. [...]
In serial data transmission, a common format is 7 data bits, an even parity bit,
and one or two stop bits. This format neatly accommodates all the 7-bit ASCII
characters in a convenient 8-bit byte. Other formats are possible; 8 bits of data
plus a parity bit can convey all 8-bit byte values.
https://en.wikipedia.org/wiki/Parity_bit
Related topics
Setting up the interfaces to peripheral devices, page 195
I/O Setup page, page 516
Functions and dialog boxes, page 416
Secondary functions and dialog boxes, page 494
Simrad ST90 Reference Manual
Summary of Contents for Simrad ST90
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