1) сигнал || сигнализировать, передавать сигналы
2) оповещение
3) событие ( в программе )
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- absolute stop signal
- accelerating signal
- accompanying sound signal
- acknowledgement signal
- acoustic signal
- actuating signal
- addressing signal
- address signal
- advance signal
- alarm signal
- alternate mark inversion signal
- amplitude-modulated signal
- amplitude-shift keyed signal
- analog signal
- angle-modulated signal
- anisochronous signal
- antipodal signal
- arrival signal
- attention signal
- audible signal
- audio signal
- axis designation signal
- B signal
- background signal
- back-to-normal signal
- backup signal
- band-limited signal
- baseband signal
- beam indexing signal
- bell signal
- bidirectional signal
- binary signal
- bipolar signal
- black signal
- black-and-white signal
- blackout signal
- blanketing signal
- blanking signal
- blank-out signal
- blocking signal
- block-section signal
- bracket signal
- brightness signal
- broadband signal
- broadcasting television signal
- busy back signal
- busy signal
- B-Y signal
- cab signal
- calibration signal
- calling-on signal
- call-on signal
- carry signal
- caution signal
- chirp signal
- chroma signal
- clear signal
- clear-back signal
- clear-forward signal
- clearing signal
- clipped signal
- clock signal
- code signal
- color bar signal
- color burst sync signal
- color identification signal
- color signal
- color television signal
- color-difference signal
- color-separation signal
- common-mode signal
- complete video signal
- composite color video signal
- composite picture signal
- composite synchronization signal
- composite video signal
- compressed signal
- conflicting signal
- constant-amplitude signal
- contact detection signal
- contaminating signal
- continuous-phase signal
- control signal
- convolved signal
- correlated signal
- critical axis distance signal
- cross-hatch signal
- crosstalk signal
- cue signal
- danger signal
- dark signal
- data signal
- day signal
- decadic signal
- decrease signal
- departure signal
- detected signal
- detection signal
- deterministic signal
- difference signal
- differential-mode signal
- digital signal
- digital television signal
- digital video signal
- directional signal
- directivity signal
- disable signal
- discernible signal
- disconnect signal
- disk signal
- distance-representing signal
- distant switch signal
- distinguishable signal
- dither signal
- diversity signal
- Doppler-shift signal
- Doppler signal
- double-sideband signal
- drive signal
- driving signal
- dwarf semaphore signal
- echoed signal
- echo signal
- emergency signal
- enable signal
- enciphered signal
- end-of-impulsing signal
- end-of-pulsing signal
- end-of-conversion signal
- engage signal
- erase signal
- error signal
- facsimile signal
- failed signal
- false signal
- fault signal
- feed stop signal
- feedback signal
- field synchronization signal
- filtered signal
- fixed signal
- flashing signal
- flight urgency signal
- floodlight signal
- fluctuating signal
- fog repeater signal
- foreground signal
- four-aspect signal
- free-line signal
- frequency-hopped signal
- frequency-modulated signal
- frequency-shift keyed signal
- friendly signal
- G signal
- gate signal
- gating signal
- ghost signal
- grade signal
- grinding torque error signal
- ground signal
- guard signal
- hand signal
- hang-up signal
- high-level signal
- holding signal
- home signal
- homing signal
- hopping signal
- hump light signal
- hump signal
- I signal
- identification signal
- ident signal
- idle identification signal
- impulse signal
- increase signal
- inhibiting signal
- initiate shift signal
- in-phase signal
- in-position signal
- input signal
- insertion test signal
- interface signal
- interfering signal
- interlocked signal
- intermediate signal
- interrupt signal
- isochronous signal
- jamming signal
- junction signal
- keying signal
- leave signal
- left-hand signal
- level crossing signal
- light signal
- limited signal
- line clear signal
- line signal
- line synchronization signal
- line-frequency control signal
- line-identification signal
- locked-on signal
- locking signal
- logic signal
- longitudinal time and control signal
- low-level signal
- luminance signal
- main home signal
- marshaling signal
- medium-approach signal
- microwave signal
- minimum-phase signal
- mixed synchronization signal
- modulating signal
- monitoring signal
- monitor signal
- motion signal
- multiburst signal
- multichannel signal
- multiple frequency signal
- multiplexed signal
- narrow-band signal
- night signal
- noise signal
- noise-free signal
- noise-like signal
- nominal white signal
- nonband-limited signal
- nonminimum-phase signal
- normal-mode signal
- numeral signal
- off/on signal
- off-hook signal
- on-hook signal
- opposing signal
- output signal
- PAL line-identification signal
- partial-response signal
- permissive signal
- phase-modulated signal
- phase-shift keyed signal
- pickup signal
- picture signal
- pilot signal
- playback signal
- point signal
- polar signal
- position error signal
- position signal
- prescribed signal
- pressure feedback signal
- probe's signal
- probe signal
- probing signal
- proceed signal
- protection signal
- pseudonoise signal
- pseudorandom signal
- pseudo-ternary signal
- pulse and bar signal
- pulsed signal
- pulse signal
- Q signal
- quadrature signal
- quantized signal
- R signal
- radio-frequency signal
- radio signal
- random signal
- ranging signal
- reading signal
- read signal
- rectified signal
- reference signal
- reference white signal
- reminder signal
- request signal
- restrictive signal
- retract signal
- return video signal
- returned signal
- return signal
- RGB signal
- right-hand signal
- ring signal
- ring-back signal
- road crossing signal
- robust signal
- route signal
- run-in signal
- R-Y signal
- safety signal
- sampled signal
- saw-tooth signal
- scrambled signal
- searchlight signal
- seizing signal
- sense signal
- series-mode signal
- service signal
- shading compensation signal
- shadow signal
- shunt signal
- signal of distress
- silhouette signal
- sine signal
- single-sideband signal
- sinusoidal signal
- sonar signal
- sound signal
- sounding signal
- sound-program signal
- speech signal
- spread-spectrum signal
- spurious signal
- square-wave signal
- square signal
- start signal
- starting signal
- start-stop signal
- startup signal
- station light signal
- stop signal
- stop-and-proceed signal
- strobe signal
- suppressed-carrier signal
- swept signal
- switch signal
- synchronizing signal
- sync signal
- system pressure signal
- target signal
- television broadcast signal
- television sound signal
- test line signal
- test signal
- testing signal
- test-pattern signal
- three-aspect signal
- through signal
- time signal
- time-and-control signal
- timing signal
- tool change signal
- track signal
- train order signal
- train tail signal
- transverse-mode signal
- triggering signal
- trigger signal
- trouble signal
- tunnel signal
- two-head signal
- two-position signal
- U signal
- undesired signal
- unvoiced signal
- unwanted signal
- urgent signal
- V signal
- velocity feedback signal
- velocity signal
- vertical interval test signal
- vestigial sideband signal
- video signal
- visible signal
- voice signal
- voiced signal
- W signal
- warning signal
- wayside automatic signal
- wayside signal
- weather signal
- wideband signal
- window signal
- write signal
- Y signal