Advantech SOM-5899, User Manual

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49 SOM-5899 User Manual
Chapter 3
A
MI BIOS
Terminal Type
VT100
VT100+
VT-UTF8
ANSI
VT-UTF8 is the preferred terminal
type for out-of-band management.
The next best choice is VT100+
and then VT100. See above, in
Console Redirection Settings
page, for more Help with Terminal
Type/Emulation.
Bits per second
9600
19200
57600
115200
Selects serial port transmission
speed. The speed must be
matched on the other side. Long or
noisy lines may require lower
speeds.
Flow Control
None
Hardware RTS/CTS
Software Xon/Xoff
Flow control can prevent data loss
from buffer overflow. When send-
ing data, if the receiving buffers are
full, a 'stop' signal can be sent to
stop the data flow. Once the buf-
fers are empty, a 'start' signal can
be sent to re-start the flow. Hard-
ware flow control uses two wires to
send start/stop signals.
Data Bits No Option Data Bits
Parity No Option
A parity bit can be sent with the
data bits to detect some transmis-
sion errors. Even: parity bit is 0 if
the num of 1's in the data bits is
even. Odd: parity bit is 0 if num of
1's in the data bits is odd. Mark:
parity bit is always 1. Space: Parity
bit is always 0. Mark and Space
Parity do not allow for error detec-
tion. They can be used as an addi-
tional data bit.
Stop Bits No Option
Stop bits indicate the end of a
serial data packet. (A start bit indi-
cates the beginning). The standard
setting is 1 stop bit. Communica-
tion with slow devices may require
more than 1 stop bit.