In
telecommunication
Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than tha ...
, receive-after-transmit time delay is the
time
Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. It is a component quantity of various measurements used to sequence events, t ...
interval between (a) the instant of
keying
Keying may refer to:
* Keying (electrical connector), used by electrical connectors to prevent mating in incorrect orientation
* Keying (graphics), a technique for compositing two full frame images together
* Keying (official) (1787–1858), a M ...
off the local transmitter to stop transmitting and (b) the instant the local receiver output has increased to 90% of its steady-state value in response to an RF (radio-frequency)
signal
In signal processing, a signal is a function that conveys information about a phenomenon. Any quantity that can vary over space or time can be used as a signal to share messages between observers. The '' IEEE Transactions on Signal Processing' ...
from another transmitter.
The RF signal from the distant transmitter must exist at the local receiver input prior to, or at the time of, keying off the local transmitter.
Receive-after-transmit time delay applies only to
half-duplex operation
A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions. Duplex systems are employed in many communications networks, either to allow ...
.
See also
*
Transmit-after-receive time delay
*
Attack-time delay
In telecommunications, attack-time delay is the time needed for a receiver or transmitter to respond to an incoming signal.
For a receiver, the attack-time delay is defined as the time interval from the instant a step radio-frequency (RF) s ...
References
{{FS1037C MS188
Telecommunications engineering
Radio technology