delay

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delay

[di′lā]
(communications)
Time required for a signal to pass through a device or a conducting medium.
Time which elapses between the instant at which any designated point of a transmitted wave passes any two designated points of a transmission circuit; such delay is primarily determined by the constants of the circuit.
(industrial engineering)
Interruption of the normal tempo of an operation; may be avoidable or unavoidable.

Delay

 

in automatic control systems, a phenomenon that consists in the fact that when the input signal of a system or device begins to change, the output signal begins to change only after a certain time interval, called the delay time. The component of the delay time determined by the final intrinsic rate of propagation of the signal is called the transport delay. Delay may also be caused by the inertia of the system. In electronic simulation equipment, delay is created artificially in delay circuits, which retard the reproduction of the signal by some predetermined time interval. Such delay is used in the simulation of many technological processes associated with matter transfer or power transmission.

delay

i. As it pertains to air traffic control, delays are incurred when a controller takes any action that prevents an aircraft from proceeding normally to its destination for an interval of 15 minutes or more. This includes actions to delay departing, en route, or arriving aircraft, as well as actions taken at destination airports. See also absolute delay.
ii. In radar operations, the ground distance from a point directly beneath the aircraft to the beginning of the area of a radar scan.
iii. The electronic delay of the start of the time base used to select a particular segment of the total.
References in periodicals archive ?
The AV delay programming starts at a lower value and then delay is increased progressively to get an optimal value that provides maximal difference between systolic and diastolic blood pressures.
Quick determination of the optimal AV delay at rest in patient paced in DOD mode for complete AV block (abstract).
determined that an AV delay of shorter than 100 ms is necessary to ensure full apical preexcitation (20).
A pacemaker that will dynamically shorten its AV delay as heart rate increases is useful.
It automatically analyzes conduction sequences and gradually increases the paced and sensed AV delays until intrinsic ventricular activation is uncovered.
For example in patient with AAI/R PMK previously implanted for sick sinus syndrome we can observe AV delays when the atrial rate is increased by rate responsive function.