11
CHAPTER 3: Installation
Figure 3-3. Parallel-to-Serial Installation
NOTE
When operating serial to parallel or parallel to serial, the serial device has
to run hardware flow control. Software flow control (X-ON/X-OFF, etc.) is
not supported.
2. Test the Cabling
To test the 4-wire cable and connections, remove the cable connecting the PC
to the transmitter. When the modems are turned on, the following LED display
should be seen:
TD
on the transmitter will light green;
RD
on the receiver will light green;
BUSY
will not light on either unit.
3. Connect Your PC and Printer
The parallel interface on the SHM-B Parallel and on IBM PC/XT™, PC/AT
®
,
PS/2
®
, and compatibles is similar to the Centronics standard, but uses a DB25
connector instead of a 36-pin Centronics connector. To connect these devices to
the SHM-Parallel, use a 25-pin straight-through cable with a DB25 female
connector on the SHM-B Parallel transmitter side and a DB25 male connector on
the PC side.
SHM-B PARALLEL-T
TRANSMITTER
SHM-B
RECEIVER
