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 ?
0 [micro]M 10 [micro]M BPA (n = 3) BPA (n = 4) BPA (n = 4) Sinus rate N N N slowing AV delay N N Y Prolonged PR Y Y Y segment Reduced ventricular Y Y Y CV Prolonged APD N Y Y Reduced maximum N N N paced frequency Measurement 25 [micro]M 50 [micro]M 100 [micro]M BPA (n = 7) BPA (n= 7) BPA (n = 7) Sinus rate N Y Y slowing AV delay Y Y Y Prolonged PR Y Y Y segment Reduced ventricular Y Y Y CV Prolonged APD Y Y Y Reduced maximum Y Y Y paced frequency Measurement Potential primary mechanisms of result Sinus rate Reduced [Ca.
However, general trends could be observed: the lower the interventricular conduction delay, the lower the optimal AV delay.
Achieving an optimized AV delay adjusts the contraction sequence between the left atrium and the left ventricle to optimize left ventricular filling without truncating atrial contribution.
The ALTRUA 50 and 60 series also include an enhanced AV search hysteresis feature, now with an extendable AV delay out to 400 milliseconds, providing physicians with additional flexibility to tailor device programming for unique patient needs.
Jurgen Vogt, Herz- und Diabeteszentrum Nordrhein-Westfalen, Bad Oeynhausen, Germany, commented, "The new Expert Ease feature saves us a lot of time, it gives us the additional ability to optimize the AV delay and tailor the therapy to each patient individually by just pressing one button.
The Tektronix AV Delay Measurement made by the WFM monitors is intended for out of service use as part of a normal installation or maintenance process.
Despite 40 years of experience, the mechanisms whereby DDD pacing with short AV delay reduces SAM and subsequent LVOT obstruction are not yet understood.