two-way
communication
Exchange of information between two devices. After
each block of data, the receiving device sends a
positive or negative acknowledgment to the sending
device.
TXD
Transmit data signal. TXD indicates that a device is
currently transmitting data.
VAC
Volts alternating current. A unit of measure of electric
potential or potential difference in a bidirectional
electrical current.
VDC
Volts direct current. A unit of measure of electric
potential or potential difference in a unidirectional
electrical current.
WAN
Wide area network. A radio network that supports
data communication beyond a local area. That is,
information can be sent across a city, a state, or even
nationwide. An ARDIS radio is an example of a WAN
radio. Contrast with
warm boot
To turn on a PTC with its memory intact. A warm
boot restores all hardware and causes the application
program to return to the beginning.
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