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CHAPTER 2: Introduction
2. Introduction
The SHM-B Parallel performs three functions:
• The SHM-B Parallel-T accepts parallel data from the PC, converts it to serial
data, and sends the serial data over twisted-pair cable to the SHM-B Parallel-R.
The SHM-B Parallel-R receives the serial data, converts it back to parallel data,
and sends it to the the parallel printer.
• The SHM-B Parallel-T accepts parallel data from the PC, converts it to serial
data, and sends the serial data over twisted-pair cable to the SHM-B. The SHM-
B receives the serial data, converts it to RS-232 specifications, and sends the
data to the RS-232 serial printer.
• The SHM-B accepts the RS-232 data from the PC, converts it to serial data, and
sends it over the twisted-pair cable to the SHM-B Parallel-R. The SHM-B
Parallel-R receives the serial data, converts it to parallel data, and sends it to
the parallel printer.
4-wire cable
Serial input
from PC
Parallel output
to printer
SHM-B Parallel-T
(ME806A)
SHM-B Parallel-R
(ME807A)
4-wire cable
Parallel input
Serial output
SHM-B Parallel-T
(ME806A)
SHM-B
(ME800A-R2)
4-wire cable
Serial input
from PC
Parallel output
to printer
SHM-B
(ME800A-R2)
SHM-B Parallel-R
(ME807A)
