W&T RS232 88102, Руководство пользователя

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17
W&T
RS232 Serial Buffer
Subject to error and alteration
RS 232 Serial Buffer
W&T RS232 Serial Buffers are used for fast buffering of serial
data between an RS232 data transmitter and RS232 receiver.
Function
The buffer works bi-directionally at a maximum transmission
rate of 115.2kbps and allows separate configuration of the in-
put and output port with respect to transmission speed, data
format and handshake procedure. In the direction of the re-
ceiver the entire memory capacity minus the reverse channel
capacity of 4kB is available. This memory is reserved for buffer-
ing data from the peripheral to the computer.
Configuring the buffer
Before starting up for the first time, the buffer ports must be
configured for the desired transmission parameters.
Serial parameters
On the rear side of the buffer are three DIL switch blocks, with
the center (S2) block used for configuring the input port and
the right (S3) block the output port. The assignments for these
two DIL switch blocks is identical and can be found on the part
label. The ability to configure both ports separately permits you
to work on the computer side with a significantly higher trans-
mission speed than the peripheral allows. This can drastically
increase the efficiency of the buffer.
In addition, you can use the buffer as a converter between two
RS232 devices whose transmission parameters or handshake
procedure are not otherwise compatible.