User's Manual

MDR2400-SR, MDR5800-SR and Orion 5825-SR
Issue 10 Page 125
Is IU driving the
Tribs
PER >
Threshold
YES
YES
Timer >= 10sec
Redundant IU
has frame lock
YES
Start Driving Tribs
& Signal
Redundant IU
Is Redundant
IU driving Tribs
IU has frame
lock
Reset Timer
Stop Driving Tribs
& Signal
Redundant IU
NO
NO
YES
YES
NO NO
YES
Reset
Figure 11: Redundant system switch-over algorithm.