US Utah-400, Setup And Operation, Page: 89 / 157

144x144 Router
4-23
Video Crosspoint Board (Redundant)
Scan Data Active (LED)
The yellow LED pulses continuously when conditions are normal. A solid LED indicates the
‘standby’ crosspoint in a redundant system.
FIGURE 4-19.
Video Crosspoint LEDs
FPGA Control Board
The Crosspoint control module decodes the incoming information delivered through the MX
bus cable. The module queries the power supplies for status determination, and samples the
tachometer for the chassis’ 4 cooling fans. The crosspoint control module also contains a con-
tact closure that is used to identify error conditions associated with crosspoint card’s SMPTE
alarm.
This module is part of a redundant pair, with the right hand module acting as the default
primary card in single crosspoint systems.
FIGURE 4-20.
Video Crosspoint control Module
SG Active
Power Good LED
5 V (Voltage Failure)
2.5 V (Voltage Failure)
3.3 V (Voltage Failure)