pretrigger

pretrigger

[prē′trig·ər]
(electronics)
Trigger used to initiate sweep ahead of transmitted pulse.
References in periodicals archive ?
Different from electroencephalography (EEG) which reflects the brain's spontaneous electrical activity over a short period of time, SEPs are not recorded continuously to spontaneous stimuli but are time locked to a stimulus with a pretrigger.
Similar to the old analog trigger hold-off function, arming must disable triggering until the selected amount of pretrigger data has been captured.
Addition of the pretrigger reagent, which includes hydrogen peroxide, and the trigger reagent, which includes sodium hydroxide, leads to acridinium-produced chemiluminescence, measured as relative light units (RLUs).
Upon review of this application, it was found that turning on the pretrigger (starting sonics before the horn makes contact with the part) solved the problem with the initially recommended [TABULAR DATA OMITTED] booster.
The fast sweep time along with gap sweep and pretrigger functions make simultaneous measurements of pulse rise and fall times easy, as shown in Figure 2.
Once the VSA receives this trigger, it uses its normal acquisition memory to capture a record of data, including pretrigger samples.
3-[9-({{4-[(2,5-dioxo-1-pyrrolidinyl)oxy]-4-oxobutyl} [(4-methylphenyl)-sulfonyl]amino}-carbonyl)-10-acridiniumyl] -1-propanesulfonate; the monoclonal antibody against the [beta] subunit of TSH, calibration solutions with known concentrations of TSH; and Architect Pretrigger (cat.
There is no mirror lockup or prefire, but it is sometimes possible to pretrigger the mirror by pressing the shutter-release button halfway down.
The digitizers also support timestamping; deep memory in a single PCI slot; pretrigger multiple recording; and timing features such as clock in/clock out, trig in/trig out, and a 10-MHz reference clock.
After exposure to pretrigger and trigger reagent, the acridinium undergoes a decomposition reaction and the emitted light is amplified and processed.
The machines come with a mechanical stop to prevent horn travel beyond the desired setting, and also have a pretrigger mechanism.