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Audiotronics
Audio Electronics
| Question | Answer |
|---|---|
| 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
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