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>15ms
E
3-state alarm
ACi, Ri and Ti interfaces.
Differentially transmitted signals forced open circuit for >15ms when alarm conditions valid.
(Ri and Ti alarm conditions same as differential line driven output. ACi alarm conditions: <40% signal or overspeed).
Alarm
1
Differential line driven output
Ri and Ti interfaces
1
Inverse signals not shown for clarity.
Interface model Alarm asserted when
Ri0004
• <40% signal
• Overspeed
Ri0008
Ri0020
Ri0040
Ri0100
• <20% signal
• >130% signal
Ri0200
Ri0400
Interface model Alarm asserted when
Ti
• <20% signal
• >135% signal
• Overspeed