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