Belden Grass Valley Kayenne K-Frame, Инструкция по установке и обслуживанию

Страница: 95 / 288

KAYENNE K-FRAME — Installation & Service Manual 95
K-Frame System Video Timing and Delay
Reference Input
The K-Frame Video Processor has one analog looping reference input,
which can be used with any SD/HD/3G standard. This reference input
signal must have the same frame rate as the native operating standard of
the K-Frame.
75-ohm termination of the looping input is required, either directly on the
adjacent connector or at the end of a daisy chain looping to other equip-
ment.
Alternatively, any one of the K-Frame video inputs can also be used as ref-
erence in the respective standard.
K-Frame System Video Timing and Delay
The total delay of a video input to the switcher output can vary according
to the relationship of the input to the switcher reference. The switcher will
automatically autotime inputs that fall within an autotiming window
(
Table 5 ). Inputs must be within this range to be properly timed at the
output. The calculation of the actual video delay of a specific input is the
Nominal Switcher Delay minus the input time location within the auto-
timing window (the time location value can be zero, positive, or negative).
A timing diagram of the input autotiming window and various switcher
delay values is provided.
Table 5. K-Frame System Timing, 4.5 ME System
Frame Operating Mode
A
Nominal
Switcher Delay
B
Autotiming
Window
C
Minimum
Switcher Delay
D
Maximum
Switcher Delay
525i/29.97
54.91 us +/- 8.69 µs 46.22 µs 63.56 µs
625i/25
55.10 µs +/- 8.88 µs 46.22 µs 64.00 µs
720p/59.94/60
20.22 µs +/- 2.02 µs 18.20 µs 22.24 µs
720p/50 22.43 µs +/- 4.23 µs 18.20 µs 26.67 µs
1080i-1080psf/29.97/30
23.93 µs +/- 5.73 µs 18.20 µs 29.66 µs
1080i-1080psf/25 26.88 µs +/- 8.68 µs 18.20 µs 35.56 µs
1080psf 23.98/24 27.63
µs
+/- 9.43
µs 18.20 µs
37.04
µs
1080pA 59.94/60 11.97
µs
+/- 2.87
µs
9.1
µs
14.83
µs
1080pA 50 13.44
µs
+/- 4.34
µs
9.1
µs
17.78
µs
1080pB 59.94/60 20.23
µs
+/- 9.44
µs
10.79
µs
29.66
µs
1080pB 50 23.18 µs +/- 12.39 µs 10.79 µs 35.56 µs