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Lx and snd > lx 2 > Flashcards

lx 2 Flashcards

1
Q

electricity

A

flowing energy charged by particles pushing and pulling on electromagnetic forces

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2
Q

electrons

A

negatively charged particles. repels itself

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3
Q

protons

A

positively charged particles. repels itself

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4
Q

voltage (v)

A

pressure that pushes current through circuit. potential difference and conductor makes the current flow. measured in volts.

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5
Q

na voltage standard

A

120

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6
Q

appliance voltage standard

A

240

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7
Q

current (I)

A

rate of electric charge flowing through a conductor. measured in amperes (amps(a)). produced by batteries and generators.

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8
Q

direct current

A

electrons move constantly in one direction

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9
Q

alternating current

A

electrons move in one direction, and then another

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10
Q

wattage

A

measures amount of power used (watts). W=V x A

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11
Q

resistance (R)

A

impedes flow. measured in Ohms. too much current runs the risk of explosion.

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12
Q

Ohm’s law

A

V= I x R

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13
Q

electrical circut

A

voltage, current wattage, and resistance forms circuit. pathway electricity travels to get to fixture

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14
Q

closed circuit

A

power

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15
Q

open circuit

A

no power

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16
Q

circuit breaker

A

trips to stop current from carrying too much. 15-20 amps. made to break so electricians are careful not to overload the breaker. maximum load, W= V x A. Electrician’s use 80% of capabilities

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17
Q

unit numbering

A

goes from stage left to stage right, down stage to upstage

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18
Q

dimmers

A

could have rack, many plugs

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19
Q

dmx

A

digital multiple x, controls lights an fog machines. goes in one direction (daisy chain). high resistance of electricity. 5 pin connector (do not use 3 pin)

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20
Q

universe

A

512 channels. most theaters have at least 3 universes. a fixture cannot be on 2 universes

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21
Q

dmx address

A

0-255. 1 to 16 - 1. 17 to 32- 2

22
Q

art-net

A

32,750 universes on 1 cable. slow

23
Q

sACN

A

streaming architecture of controlled network. send less info.

24
Q

dmx to ethernet

A

needs nodes to convert

24
Q

ETCNet2/3

A

4 lines of dmx. 2048 channels of dmx over ethernet. multiple control surfaces.

25
Q

network shapes

A

dmx - daisy chain, others - star

26
Q

IP address

A

identity for device. dynamic host configuration protocol (dhcp).

27
Q

host id

A

back end, 1.101

28
Q

network id

A

front end, 192.168

29
Q

light plot

A

conveys light design. 1/2=1’ scale. includes: hangs elevations of booms, ladders, set mounted

30
Q

how to make a light plot

A

find placement for each light, used to be by hand, vector works, autoCAD, create instrument schedule, enter position, channel numbers, luminaire

31
Q

ground plan

A

above view

32
Q

section

A

cut in half

33
Q

elevation

A

audience perspective

34
Q

label legend

A

focus, color, template #, gobo, unit #, circuit, channel, dimmer

35
Q

luminaries

A

should be oriented how they are hung

36
Q

title block

A

production/designer info. bottom right corner, right margin

37
Q

dry tech

A

show with no performers

38
Q

wet tech

A

show with performers

39
Q

paper tech

A

design with sm and director to pencil in cues

40
Q

w

A

weather resistant

41
Q

s

A

general use, 600v

42
Q

sj or j

A

300v

43
Q

o

A

oil resistant outside

44
Q

oo

A

inside and out oil resistance

45
Q

t

A

thermoplastic, pvc

46
Q

e

A

thermoplastic, rubber

47
Q

ground

A

green, green screw

48
Q

neutral

A

white/grey, sliver screw

49
Q

hot

A

black/red, brass screw

50
Q

bigger gage

A

smaller wire

Lx and snd (3 decks)

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