Setup guide

INSTALLATION REQUIREMENTS AND SPECIFICATIONS
Page 2-8
2.4 LEDs
Power OK When lit, this green LED indicates that the
(Power Supply) power supply module is operating correctly; a
signal is also sent to the management/repeater
module to indicate that the power supply is
functioning properly.
Power Fail When lit, this red LED indicates a loss of input
(Power Supply) power, loss of regulation on any output, or the
activation of any power fail circuit protection.
The power supply test points represent the power supply
output voltages and not the bus voltage seen by the
Media Interface Modules. The voltages measured at
the
test points are one diode voltage drop above the bus
voltage. The following are the voltage tolerances whi
ch
ensure that the bus voltage is within specified limits
:
+5 V test 5.10 V to 5.75 V
+12 V test 11.75 V to 13.10 V
-5 V test -5.10 V to -5.75 V
-9 V test -8.90 V to -10.05 V
Power Fail Indication:
Power good <1 V
Power bad >4 V
NOTE
On the M8PSM-E and -EDC, the above-described
Power OK and Power Fail LEDs are simply labeled
“Power.” When the green LED is illuminated, the pow
er
supply is operating correctly, as described in Power
OK, above; the red LED indicates the same trouble
conditions described in Power Fail, above.
NOTE