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© Sealevel Systems, Inc.
SeaI/OUSBSERIAL | SL9177 04/2022
Power Supplies
SeaI/O USB serial expansion modules are powered from your 9-30VDC source or from a variety of Sealevel
power supply options. Refer to the
chapter of this manual for power supply sizing considerations
when powering multiple SeaI/O modules.
Loopback Adapters
All SeaI/O USB serial expansion modules include an RJ45 RS-232 serial loopback adapter (Item# LB116) that is
useful for testing the data signals on RS-232 ports. SeaI/O USB serial models with RS-485 VersaCom ports also
include an RJ45 RS485 loopback cable (Item# LB115) that is useful for testing the data signals between a pair
of RS-485 ports.
WinSSD is a full featured asynchronous serial diagnostic utility for Windows that allows you to modify default
parameters, perform loopback tests, toggle modem control signals, and transmit test pattern messages.
WinSSD is available as a
software suites.
