Grass Valley Karrera Video Production Center Installation v.4.1 - Manual (Page 276)

276 KARRERA — Installation & Service Manual
Appendix A — Specifications
Table 25. Serial Digital Video Outputs
Format
ITU-R656, SMPTE 259M, 270 Mbit/s.
SMPTE 292M, 1.485 Gbit/s
Number of Outputs
Frame w/ 1 ME Board: 12
Frame w/ 2 ME Boards: 24
Frame w/ 3 ME Boards: 36
Frame w/ 4 ME Boards: 48
Return loss > 15 db, 5 MHz to 1.5 GHz
Type of Connector 75 ohm BNC (SMPTE 259M)
Interface
HD Video Formats SMPTE 292M-1998
SD Video Formats SMPTE 259M-1997
Nominal Amplitude 800 mv peak-to-peak across 75 ohm +/- 10%
Rise & Fall Times
400 to 1400 picoseconds 75 ohm termination
between 20% and 80% amplitude
Timing Jitter ≤ I UI R 601/656
Alignment jitter ≤ 2 UI (SD), ≤ 1 UI (HD)
Output Impedance 75 ohm
DC Offset < 50mV with 75 ohm termination
Table 26. Analog Reference Input
Video Standard
For HD Video: Tri-level Sync, analog equivalent to the standard being used
For SD Video: Color Black, analog equivalent to the standard being used
Return loss > 40dB, up to 5 MHz
Connectors 2 each BNC loop-through for both HD and SD inputs
Impedance 75 ohm external
Table 27. Karrera System Timing, 4.5 ME System
System Timing
HD Mode SD Mode
720p/
50
720p/
59.94/60
1080i & sf/
25
1080i & sf/
29.97/30
1080sf/
23.97/24
525i/
29.97
625i/
25
Nominal Switcher Delay 21.96 µs 19.79 µs 26.46 µs 23.50 µs 27.20 µs 61.46 µs 61.68 µs
Serial Input Autotiming +/- 4.71 µs +/- 2.45 µs +/- 9.12 µs +/- 6.16 µs +/- 9.86 µs +/- 2.10 µs +/- 2.32 µs
Minimum Switcher Delay 17.34 µs 17.34 µs 17.34 µs 17.34 µs 17.34 µs 59.36 µs 59.36 µs
Maximum Switcher Delay 26.67 µs 22.24 µs 35.56 µs 29.66 µs 37.04 µs 63.56 µs 64.00 µs