User's Manual

TS4000 Radio Modem User’s Manual Serial Port 13
The baud rate list provides selection of the serial port asynchronous baud rate.
The available selections are 1200, 2400, 4800, 9600, 19200 and 38400 baud.
These options set the number of data bits in each asynchronous character.
These options set the parity of the asynchronous characters.
Selection Description
Hardware Handshake In this mode the RTS handshake line is used to
frame transmit data into bursts. The TS4000 begins
transmission when RTS is activated and at least
one character (non-control string) is received.
Transmission ends when RTS goes inactive and
the burst has been completely transmitted.
Data Activation This mode uses a character timer to frame the
transmit data into bursts. The TS4000 begins
transmission when one character (non-control
string) is received. The transmit burst is completed
when the transmit data line is idle (no data) for the
number of character periods defined by the data
activation timeout control.
Data Activation Timeout
(Timeout Time)
This control sets the number of character periods of
idle required on the serial port's transmit data line to
declare the end of a transmit burst.
Char Period = Char Length / Baud Rate
Where: Char Length = Data Bits + Parity + 2
Data Bits is the value selected from the Data Bits
control. Parity is 0 if none is selected from the
Parity control and 1 if even or odd is selected. The
2 added to the accounts for the start and stop bits
of an asynchronous character. Baud Rate is the
value selected from the baud rate list.
Baud Rate List
Data Bits
Parity
Protocol Options