AWG
America Wire Gauge= Gauge/diameter
The Three Type of Shielding:
Braided/Swerved/Foiled
The Three Types of Noise:
RFI/EMI/EST
Shielding helps to reduce:
Noise
Twisted Pairs help to:
Reduce/Reject Noise
Sex of connectors:
Jacks=
Plugs=
Jacks=female
Plugs=male
Circuit ground is:
Zero Volt Reference
HI=Tip=:
Pin#2=White
Lo=Ring=:
Pin#3=Black
GND=Sleeves=:
Pin#1=Shield
American’s Wall Outlets offer:
120VrmsAC at 60 Hz
Solder used in class are:
60/40 Rosin Core:composed of 60% Tin and 40% lead
What does OPEN means and value:
a connection where it not suppose to be and it value is infinity(ohms)

EX. PIN#2 is open to PIN#1

What is SHORT means and values
a connection that is neant to be and about 0 ohms

Hire a custom writer who has experience.
It's time for you to submit amazing papers!


order now

EX.PIN#1 is short to PIN#1

Desoldering fused connection with:
wick/bulb/pump or desoldering iron
What does a DOT mean:
it represent an electrical connection
IN/OUT(AES)
have no wires between the IN/OUT ‘s
The solder terminals for the tip,ring,sleeve and normalling contacts can be founded using:
Plug and DMN
Voltage:
the difference in electrical potential two point.
Resistance:
the oppositionto current flow(given in ohms)
the most common troubleshooting involves testing:
for ohms + volts
The Three flavor of voltage are:
AC/DC/AC with a DC offset
Oscilloscopes:
Display time and voltage
when oscilloscope is set at AC
Blocks DC and display AC
when oscilloscope is set at DC
Will display AC and DC
when oscilloscope is set at GND
the point of 0 volts
What Percent of isopropyl alcohol is use to clean:
91%-99%
MRL:
Magnetic References Laboratory
in the USA,the EQ switch is set to NAB at:
15/30 inches per sec.
ANSI(US)nWb/m
520=
370=
320=
250=
185=
dB References to 185nWb/m
520=+9dB
370=+6dB
320=+5dB
250=+3dB
185=0dB
nWb/m:
nanowebers per meter
the higher the operating level:
the lower the noise floor
what are L,M and H are setting for difference speeds
L=7
M=15
H=30
wind analog tape reel with the tails:
OUT
Stores tapes in a environment:
cool dry
Stores tapes in a environment:
cool dry
Repro Azimuth/Recheck repro azimuth :
10kHz
Repro SRL:
1kHz
Sync Gain:
1kHz
Repro EQ treble:
10kHz
Sync EQ/treble:
10kHz
Bias:
1kHz o 10kHz
Input/source/level:
[email protected]
Record level:
1kHz
Record EQ/treble:
10kHz
Record Azimuth:
10kHz o 8kHz and 16kHz
Recheck Rec EQ/treble:
10kHz/1kHz
ReproLF/SyncLF:
100Hz
Phase compensation:
10 kHz/Square wave
a Digital multi meter is used to measure:
ohms/volts/amps
Turning on an active component require:
DC power
Op amps and transistor are:
active
transformer and inductor are:
Passive
integrated circuits chip pin number can be founded by referencing the location of the Dot. The Dot =
Pin#1
Common IC chips type includes:
linear(operational amplifiers)

digital(logic gates)

component chip(resistors,capacitors and etc.)

78xx=

79xx=

78xx= +

79xx= –

The 4th band:
tolerance
Open:
infinite ohms,no current flow
closed:
has current flow by design
Shorts:
current take the path of least resistance/0 ohms/not by design
Series:
circuits path does not split/it add up
Parallel:
circuits path splits
Parallel voltage are always:
constant
the voltage across a short=
0 v
Voltage across a working fuse=
0 v
Eletromotive Force(e)=
volts=pressure
Current(i)=
Amps=flow
Current(i)=
Amps=flow
Resistance(R)=
ohms=blockage DC
Impedance(z)=
ohms=blockage AC
Power(p)=
Watts=work
p means:
i e
p/e or i and i * e
p means:
i r/z
p/i or r/z and i*r/z
Bridge Rectifiers:
they direct all AC waves half cycles to travel in the same direction
Bipolar transistors leads are called:
emitter,base + collector
FET leads are called:
the source,gate,and drain
what are Op amps schematic symbol:
inverting(-) and non-inverting(+)
a differential op amplifier amplifies:
the difference between the two signal at its inputs
unity gain=
gain of 1
what truth tables:
are used to show how a logic circuit’s output responds to various combination of the inputs
TTL(transistors-transistors logic)indicates:
the bipolar digital gate family
the operating level for CMOS digital ICs is a fixed value between:
+3 Vdc and +18Vdc
Single sided:
metal runs on only one side of the board
Double sided:
metal runs on both sides of the board
stuffed:
parts are soldered into the circuit board
unstuffed:
no parts are soldered into the circuit board
wide metal runs on a printed circuit board(PCB) are:
circuit ground
soldering should be performedd quickly on a circuit board so that traces:
do not peel off.
Repairing a PCB crack involves:
-use of insulated wire,
-leaving stress excess
-removing enamel,
-knowledge of magnet wire enamel removal
The three most important features in services manual are the:
-Schematic drawings
-Assembly drawings
-Parts description lists
What is a Cross-Reference:
a companies offer the sales of the same component under different names
what two ways of calibration use dry erase markers:
Zenith and Wrap
A bad Zenith is:
trapezoid
height:
rec. 1k at 0 VU and playback should be 0 VU
Rack(forward/backward) is set by:
manufacturer
Azimuth is set in electrical cal with:
an oscilloscope or monometer method
What are common method for biasing are:
10k overbias
1kHz peak method
in europe, the 0dB nWb/m value is:
200
180nWb/m=
(185 nWb/m at 700 Hz)
0 dB
200 nWb/m=
+1 dB
250 nWb/m
(260 nWb/m at 700 Hz)
+ 3 dB
320 nWb/m
+5 dB
355 nWb/m -370 nWb/m
+6 dB
400 nWb/m
+7 dB
500 nWb/m
+9 dB