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CHAPTER 5: Operation
5. Operation
5.1 Normal Operation and LED Functions
While the SHM-B Sync and its attached devices are
plugged in and the atached devices are plugged in
and turned on, the system should operate continuously
without requiring human intervention. You can,
however, monitor the unit’s status at any time by looking
at the LEDs marked “TD” and “RD” on the unit’s front
panel. These will indicate the logic status of the
transmitter and recceiver circuitry, respectively: They
will light green for a “high” logic level or red for a “low”
logic level, and will flicker as data is transmitted and
received. (These LEDs respond to the
actual
transmitted
and received signals,
not
the TD and RD lines of the
RS-232 interface.)
Refer to the next section for a description of how the
RS-232 interface operates, and to
Appendix B
for a block
diagram of how the SHM-B Sync works at a circuit level.
If you ever have difficulty, you can do loopback testing
as described in the next section and/or refer to the
problem descriptions in
Section 6.1
.
Summary of Contents for ME801-C
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