User manual

3.4.2. Power Supply Status
The Derating (DEG#) and Supply Fail (FAL#) are implemented only for the System Slot.
Levels
TTL levels, require pull-up resistor to +5V (2kOhm) on
the System Controller Board.
DEG#
Mains AC accurate signal
Indicate that the power supply is beginning to derate its
power outputs.
1 = Mains AC is accurate.
0 to 1: 2msec minimum after the DC outputs are
accurate.
1 to 0: 20msec minimum before FAL# and DC outputs
are shutdown.
FAL#
Global DC outputs accurate signal
Indicate that a DC output from the power supply has a
failure.
1 = All DC outputs are accurate.
0 to 1: 1msec maximum before the DC outputs are
accurate.
1 to 0: 4msec maximum after the start of the DC output
shutdown.
User Manual: Agilent Acqiris 21-slot cPCI Crate Page 14 of 19