Parker CM2115, Руководство пользователя

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74 CM2115
Glossary
data link adaptor (DLA)
A development tool that connects the CAN bus to a personal computer (through a
USB or RS232 port), so that programming and diagnostics can be performed on
the product before installing it in a vehicle.
DC-coupled
DC coupling passes the full spectrum of frequencies including direct current. The
signal being read by this circuit must fall within the detection threshold range
specified for the input.
de-rating
The reduction of the rated output current level to a value less than the specified
rating. De-rating is typically done so that a product does not overheat.
digital input
An input that is typically controlled by an external switch that makes the input
either active (on), or inactive (off).
driver (hardware)
An electronic device that switches power or ground to an external load. The driver
is a key component used in all output circuits.
driver (software)
A block of software that provides access to different hardware components.
duty cycle
The time that a device spends in an active or operative state, expressed as a
fraction or percentage of the total cycle time (start, operate, stop).
electromagnetic compatibility (EMC)
The ability of a component within a system to function correctly despite
electromagnetic interference propagated by other components in the system.
electromagnetic susceptibility
The ease with which a device, component, circuit, etc., suffers a degradation of
performance when subjected to electromagnetic energy.
field-effect transistor (FET)
A transistor whose flow of charge carriers is controlled by an external electric
field.