Sharp ZQ-6100M Operation Manual page 168

SPEED bps (Communication or transmission speed)
Communication speed refers to the rate at which information is
transmitted over a communication channel and is expressed by the
number of bits per second (bps). Your Organizer supports
communication speeds of 300, 1200, 2400, 4800 and 9600 bps. Select
the fastest one of these supported by both your modem and that of the
remote system.
DATA BITS (Character length of bits per character)
Character length refers to the number of bits required to represent one
character of data. You can select either 7 or 8 bits. Select 7 bits for
data communications using ASCI!-compatible characters (alphanumeric
and symbols) and 8 bits for data communications using European
characters and/or special symbols (codes 80H to FFH) in addition to
the ASCII characters. In general, the option 7 DATA BITS is used in
the US and 8 DATA BITS in Europe.
PARITY (Parity check)
Parity check is also referred to as an "odd-even check" and provides a
means of checking a set of data bits for their validity by attaching a
non-data parity bit to the data. The parity bit is set to 1 or 0 so that the
total number of 1's in each transmitted character is always even or
always odd. You may select NONE (no parity check), ODD (odd- parity
check) or EVEN (even-parity check). Generally, select EVEN for 7-bit
data communications and NONE for 8-bit data communications.
STOP BITS (The number of stop bits)
In asynchronous serial transmission (such as when using an RS-232C
interface), data bits are sent one by one. A start bit and one or two
stop bits are attached to each character so the receiving device will
know its beginning and end. In data communications with a PC, one
stop bit is used.
XON/XOFF (XON/XOFF flow-control protocol)
XON/XOFF flow-coniro! protocol! is also called X-contro! or Buffer
control. Most computer terminals have a buffer to receive data, from
which the terminal reads data bits one by one. If the data read rate is
slower than the rate data is sent, the receive buffer will soon become
full, resulting in the loss of some transmitted data bits. With this control
protocol, the terminal can automatically send a signal to the sending
computer to temporarily stop data transmission.
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