Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
CURRENTLY
MAIN
ACTIVE
CURRENTLY
STANDBY
ACTIVE
POWER UP
MAIN SELF
TEST OK?
BUS SIGNALS
OK?*
CONTINUE
MAIN
ACTIVE
CONTINUE
STANDBY
ACTIVE
STANDBY
SELF TEST
OK?
NO
NO
NO
YES
YES
YES
*Bus signals driven by Main, checked by Standby
Figure 3-3. CM4 Module Swapping flowchart, Automatic Swap
FORCE
MAIN
ACTIVE
FORCE
STANDBY
ACTIVE
FORCE SWAP
BY SWITCH OR
USER COMMAND
Figure 3-4. CM4 Module Swapping flowchart, Forced Swap
IMUX 2000E1 RFL Electronics Inc.
January 23, 2004 3-5 (973) 334-3100
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