CXR Larus 80-100-400
Issue 1, July 2006
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d. The yellow OVERRIDE LED lights when automatic selection has been
overridden by manual remote selection.
e. The red OUTPUT LOSS LED lights when a loss of one or more outputs
occurs. If both A and B clocks and both input references fail, leaving no
valid signal for the output cards to select, the OUTPUT LOSS LED lights
and all outputs are suppressed.
f. The front panel MON jack allows for monitoring one of the output signals
with a standard monitoring test set. The Model 54572 has ten outputs
with independent drivers.
g. On-card jumper for Protected or Non-Protected operation.
5.1424 One-wire
Interface
The one-wire interface allows communication of data between the
Composite Clock output card and the 54550 Information Management Card.
5.1425 Power
An on-card power converter provides the necessary circuit voltages from the
diode-combined A and B -48 volt battery supplies. The on-card fuse, if it
blows, lights the red FAIL LED and provides battery to the Fuse Alarm bus
connecting to pin 10 on the backplane terminal strip TB1.
