US Utah-400, Настройка и эксплуатация, Страница: 71 / 157

144x144 Router
4-5
Video Input Boards
Reclocking Input Expansion Card
Part #121125-1, the Reclocking Input Expansion card is used only in the output expansion
stacks of the UTAH-400 1152x1152 series of routers. Instead of accepting serial digital or ana-
log signals from rear panel mounted BNC connectors, [they] accept signals from the first out-
put stack (0-287 outputs) through a custom 8-way interconnect cable. The card can process
SD-SDI or HD-SDI signals, or analog signals that have been converted to SD-SDI in the first
frame.
FIGURE 4-6.
Reclocking Input Expansion card
Features
This card handles 8 channels of video; it receives, equalizes, and reclocks the video signals
coming from the first frame, then distributes them to both the local frame’s crosspoint and the
midplane expansion output connector. This allows for a connection to another UTAH-400
output chassis stack. The card also has the ability to disable reclocking on individual inputs if
desired, and contains an array of status LED’s to indicate whether or not it has locked to a
signal, and if so, that signal’s rate.
Controls
The single control point on this card is dipswitch SW1, the bypass control. By moving one of
the individual switches to the ‘ON’ position, the reclocker for that input is defeated. The
dipswitch labeled 0 is for the lowest numbered input on the card, while 7 corresponds to the
highest.