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Audio Electronics

What does AWG stand for? American Wire Gauge
Solid Vs. Stranded Solid: One wire. Stranded: Multiple Wires grouped together
Name 3 types of shielding: Foil, Wrapped, and Braided.
Name 3 types of noise: RFI: Radio Frequency Interference, EMI: Electro-Magnetic Interference, ESI: Electrostatic Interference
Shielding helps to reduce: Noise
What kind is Mic Cable? a 2-conductor Shielded Cable
A cable's number of pair's equals its_______. Its number of shielded balanced channels.
In cables, twisted pairs help to do what? Helps average the exposure to noise.
Name the gender of the Jack. Female.
Name the gender of the Plug. Male.
What do we call the Circuit ground? Zero Reference Voltage.
Name the three XLR pin designations for HI, LO, and GND. HI: Pin 2, Tip, White; LO: Pin 3, Ring, Black; GND: Pin 1, Sleeve, Shield.
Typical American wall outlets use what power rating? 120 Vrms AC at 60 Hz
What is the type of solder do we use in lab? 60/40 rosin core, composed 60% tin, 40% lead.
Rosin is a type of ________. A type of flux, and enhances the fusing of two conductors.
What is tinning? The process of pre-coating an iron or conductor with solder.
Why is tinning done? Because it helps to keep an iron or conductor clean and aids the transfer of heat.
How do cold solder joints occur? By not pre-heating the conductor.
What do we use the DMM Continuity Checker for? Used to test cables and connectors for opens and shorts.
How many ohms each does an Open and a Short equal? Open= ∞ Infinity Ohms, Short= 0 ohms.
Cable ties are used to? Used to secure groups of cabling.
What is used to desolder fused connections? Wick, Bulb, Pump, or Desoldering Iron.
Typical wiring for Balanced to Balanced interface? HI to HI, LO to LO, GND to GND
Typical wiring for Unbalanced to Balanced interface? Pin1 to Sleeve, Pin2 to Tip, Pin3 to Sleeve
Typical wiring for Input Polarity Reversed? HI to LO, LO to HI, GND to GND
Typical wiring for Electronically BAL to UNBAL? Pin N.C., Pin2 to Tip, Pin3 to Sleeve
An ____ ____ is a circuit that transfers electrical information between devices. Audio Interface
In an audio interface, the output device represents the ______. The Source.
In an audio interface, the input device represents the _______. The Load.
In an audio interface, the cable represents the _______. The Closed Path.
Name 3 parts of the simple circuit. The source, load, and closed path
Shielding protects the inner conductors from _______ ______, but does not prevent noise from ________ ________. Electric fields, Magnetic Fields.
Signal degradation along a conductor is caused by ____ ____. Caused by Series Resistance.
Signal degradation between conductors is caused by ____ ____. Caused by Parallel Capacitance.
Cable Types: Single Conductor Shielded Hot Conductor, Ground Shield. Unbalanced, Line Level.
Cable Types: Two Conductor Shielded Hi and Lo Conductors, Ground Shield. Balanced, Mic/line Level, Twisted Conductors.
2 conductor pairs are ______ to average their exposure to noise. Evenly coupled noise is more likely to be ______ at a balanced input. Twisted, Rejected
______ is a 4-Conductor _____ cable. Couples moise more evenly than twisted pairs, but has more ______ per foot of cable. Star- Quad, Shielded, Capacitance.
Composite Video and S/PDIF cable has a characteristic impedance of ___ . 75 ohms
AES/ EBU cable has a characteristic impedance of ______. 110 ohms
Optical, TOSLINK, S/PIDF Optical, ADAT Bridge and ADAT Optical are all names for ______ _____ digital audio. Fiber Optic
You may easily determine if a 3-conductor plug is balanced or stereo unbalanced by ______. Checking the other end.
Solder on the iron tip during soldering increase ______ _______. Heat Transfer
Solder on the iron tip between uses increases ____ of ______. Ease of Cleaning
______ _____ ______ are caused by failure to preheat a solder point. Cold solder Joints
Name 3 uses for heat-shrink tubing. Insulation, Color Coding, Physical Reinforcment.
DMM stands for ____ ____ _____. Digital Multi Meter.
Voltage is the difference in _____ _____ between two points. Electrical Potential
Three flavors of voltage are: AC, DC, AC with DC offset
Define Resistance. The opposition to current flow.
Define Oscillator. Circuits that create AC voltages at specific frequencies, with signal shapes of sine, square, ramp.
Pro Line Level = +4 dB 1.23 RMS
Consumer Line Level = -10dBV 0.316VRMS
Mic Level = -50 dB (milli volt range)
Speaker Level = Greater than line level
A DMM is commonly used to test: ACV: probes reversible, DCV: polarity matters, Ohms: Probes reversible, Continuity: Beep Test, Diode: polarity matters, Current: tested by breaking the circuit, putting the meter in the path of current flow.
Oscilloscopes's X and Y axis labels: X-axis: Time, Y-axis: Voltage
The V in dBV refers to ____. 0.775 Vrms
The U in dBU signifies _____. An unloaded or un-terminated open circuit
Define Half-splitting. The process of finding the mid-point of circuit being tested.
Define Cross-patching. It is comparing a working circuit path with an identical one that is not broken.
Created by: la.maricha