01) What is a switching/routing matrix? (Hint)
02 A video/audio router corresponds to what device in the computer IT world?
03 What is a router layer? (Hint)
04 What are router tielines and why were they used, and why are they dissappearing? (Hint)
05 What is the fundamental difference between analog and digital? (Hint)
06 Analog is equivalent to ......., digital is equivalent to ...... (Hint)
07 The original SD digital sample rate was? Why? (Hint)
08) Half the samples were for? And the other half?
09) From the sample rates determined above how did we get to 270Mbit samples/second for SD?
10) How many samples per SD horizontal line? (Hint)
11) Why weren't SD pixels square? and what does that mean? (Hint)
12)What is an easy way to demonstrate that HD pixels/samples are square? (Hint)
13) What is letterboxed video and when is it used? (Hint)
14) What is pillorbox and when is it used?
15) How many times more pixels does HD have verses SD? (Hint)
16) How does the dreaded postage stamp display result?
17) When down-converting HD to SD what is another option to letterboxing? (Hint)
18) What is AFD, and what is it intended to do? (Hint)
19) With regards to video what is 3G, and how is it going to change television? (Hint)
20) What is the difference between RGB and color subsampling (Y, Cb, Cr)? (Hint)
21) What is color gamut? (Hint)
22) What is SMPTE 346 and 372 used for, and why will they dissappear in the future? (Hint)
23) Bonus - what does the M at the end of a SMPTE standard, such as SMPTE292M or SMPTE346M mean?
24) What does 4K video mean? (Hint)
25) Why is a separate router control system often found between user control panels and the actual router switching matrix? (Hint)
27) What does it mean when we talk protocols? Here are a few: (RS-232) (RS-422) (Sony) (VDCP)
29) What does a frame sync do?
30) What is a glass cockpit in television and how do modern routers facilitate this? (Hint)
31) What is TDM and where is it often used in routers? Hint: See SMPTE 346/372 above
33) What is reclocking? (Hint)
34) What is jitter? There are two types, which one can't be corrected? (Hint)
35) Today most routers aren't square, they have more outputs than inputs. Why? See glass cockpits.
36) What stresses routers and all electronic equipment for that matter?
37) What do cooling fans invariably do?
38) What important maintenance step is required to keep equipment as cool as possible? (Hint)
39) What limits how small routers can be made? (Hint)
40) What design considerations are considered for a router? (Hint)
