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44 Cards in this Set
- Front
- Back
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Horizontal Resoultion
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-how sharp the picture is from right to left
-more lines of horizontal res. the sharper the picture will be |
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Resolution
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measure of the camers's ability to reproduce fine detail
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Synchronous
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all have to have the same sync timing
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double Terminated
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terminating the signal twice
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Time Base Correctors
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-removes timing errors from the video signal
-can allow the signal from the VTR to be locked to the house sync generator |
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Underscan
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shrinks the picture so you can see the edges
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skew
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tape tension
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Distribution Amp
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provides several, isolated 1v p-p outputs from a single input
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uses of color bars
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1. adjust color monitors
2. adjust color encoders 3. check tv transmission systems |
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full normal
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interal connection is going to break
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asynchronous
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generates its own sync
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routing switcher
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takes number of inputs and lets you choose an output
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Looping or Bridging
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electrical connection that allows a video signal to enter one jack and contine out an adjacent jack to be used elsewhere
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Cross-pulse
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puts vertical/horizontal blanking intervals in the middle of the screen, pushes everything over and up
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monitor set-up
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a display device(can't adjust the signal)
-chain of electronics that takes image from camera all the way through to final tv set |
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gen lock
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circuit in equipment.. locks sync circuits to an external composite video
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Vertical Resolution
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-sharpness going from top to bottom is always the same
-determined by the T.V. standard -see only about 241 lines |
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Horizontal Sync
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retraces beam back to start of the next line
0 to -40 IRE |
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Vertical Blanking
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turns the beam off at the end of the field
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Vertical Sync
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retraces the beam to start of the next field
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color burst
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8 to 11 cycles of signal wave frequency of 3.58 mtiz.
+20 IRE to -20 IRE |
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composite video
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made up of picture information and compostie sync
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waveform monitor
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-used to understand luminance and composite sync
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active video
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picture information
7.5 to 100 IRE |
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IRE
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institute of radio engineers
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full video
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7.5 to 100 IRE
-more we fill the window more brightness and contrast for maxium amount of detail. |
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Terminator
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75 ohm resistor at the end of the video signal path
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Preventative Matience
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-keep accurate matience records
-helps spot repair trends |
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Video Head Cleaning Options
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-non-abrassive cassette
-abrasive cassette -swab and solvent -send VCR to shop for cleaning |
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Blue Gun
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turns off red/green guns in monitor
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Active Router
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-switch electronically
-vertical blanking interval (switch in) |
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Gell-Cell
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a battery. (same type that starts car)
-lead/acid |
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Ni-cad
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nickel/cadmium
holds more power than gel cell |
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Patching
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flexibility to re-route signals in system easily
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Component video
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a video signal that has been split into two or more components.
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Composite Sync
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vertical and horizontal sync and blanking interval
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Nec 80% rule
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if the load through the breaker is going to draw current for more than 3 hours in any 24 hour period, only 80% of the breaker rating can be drawn
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Watt
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Unit of Power
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Luminance
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monochrome signal
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peak clamping
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circuit like a limiter, doesn't let video signal above a preset level (90 ire, 100 ire, etc...)
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AWG
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higher #'s equal smaller the wire is (gauge)
the gauge of a wire is defined by the AWG |
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chrominance
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the signal used in many video systems to carry the color information of the picture
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calculating AC loads
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watts/volts = amps
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amp
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unit of electrical current
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