steve lampen multimedia technology manager product line manager – entertainment belden hollywood...
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4K Single Link
Is Coax Dead?Steve LampenMultimedia Technology ManagerProduct Line Manager – EntertainmentBelden
Hollywood Post Alliance Technology Retreat 2014
Disclaimer• No standards for 4K single link.
• Lots of talk, nothing signed
• Everything here is “theoretical”.• “What if we did this?”
• Everything is interrelated.• A changes B changed C….
• LOTS of dual link/quad link.• Standard product, in stock.
• There is NO single link 12 GHz.• We’re close….
• Could we make some?• We think we could.
• Would you use any?• It’s a very new world
SIGNAL
CLOCK NYQUIST LIMIT
3 x NYQUIST
SD-SDI 270 MHz
135 MHz
405 MHz
HD-SDI 1.5 GHz 750 MHz
2.25 GHz
3G-SDI 3 GHz 1.5 GHz 4.5 GHz4K 12 GHz 6 GHz 18 GHz
SIGNAL
CLOCK NYQUIST LIMIT
3 x NYQUIST
SD-SDI 270 MHz
135 MHz
405 MHz
HD-SDI 1.5 GHz 750 MHz
2.25 GHz
3G-SDI 3 GHz 1.5 GHz 4.5 GHz4K 12 GHz 6 GHz 18 GHz
Things We Need• “Safe distance” formula
• -20 dB at ½ clock (Nyquist)• Things have improved since 1990…
• -40 dB at ½ clock• Cable still better than this.
• Our existing cable works to 6 GHz• Our existing connectors, too.
• 12 GHz requires new designs• Add 20 years of improvements
-20 dB @
½ clock
-20 dB @ ½ clock
-20 dB @
½ clock
-40 dB @ ½ clock
-40 dB @ ½ clock
-40 dB @ ½ clock
-40 dB @ ½ clock
-40 dB @ ½ clock
SINGLE LINK
DUAL LINK HD
SINGLE LINK
DUAL LINK 3GX2=6 GHz
SINGLE LINK 6 GHz
QUAD LINK 3Gx4=12GHz
DUAL LINK 6Gx2=12GHz
SINGLE LINK 12 GHz
HD-SDI 3G-SDI 3G-SDI PROPOSED PROPOSED PROPOSED PROPOSED PROPOSEDCABLE SMPTE
292MSMPTE 424M
SMPTE 424M
PROPOSED PROPOSED PROPOSED PROPOSED PROPOSED
Ft. m Ft. m Ft. m Ft. m Ft. m Ft. m Ft. m Ft. m179DT 11
535 115 35 81 25 162 49 111 34 162 49 111 34
4179 73 221855A 21
568 215 68 14
945 299 91 204 62 299 91 204 62
4855 110 341505A 30
493 304 93 21
064 420 128 286 87 420 128 286 87
4505 192 591694A 37
1113 371 11
3256
78 512 156 347 106 512 156 347 106
4694 227 691794A 46
9143 469 14
3320
98 641 195 433 132 641 195 433 132
4794 286 877731A 58
0177 580 17
7393
120
785 239 524 160 785 239 524 160
4731 347 106
CABLE FIRERATING
VELOCITY OF PROPAGATION
PERCENTAGE OF NITROGEN GAS
1855A CMR 82% 55.8%1855P CMP 80% 49.8%1505A CMR 83% 58.9%1506A CMP 84% 61.5%1694A CMR 82% 55.8%1695A CMP 82% 55.8%7731A CMR 85% 64%7732A CMP 83% 58.9%