© National Instruments
|
A-3
Maximum ripple and noise (20 MHz bandwidth)
Over-current protection .................................... All outputs protected from short circuit and
overload (some faults require a power cycle for
recovery)
Over-voltage protection
3.3 V and 5 V............................................ Clamped at 20 to 30% above nominal output
voltage
Power supply shuttle MTTR............................. Replacement in under 5 minutes
Chassis Cooling
Module cooling system..................................... Forced air circulation
(positive pressurization) through two 110 cfm
fans with High/Auto speed selector
Slot airflow direction ........................................ Bottom of module to top of module
Module cooling intake ...................................... Bottom rear of chassis
Module cooling exhaust.................................... Along both sides and top of chassis
Power supply cooling system ........................... Forced air circulation through integrated fan
Power supply cooling intake............................. Right side of chassis
Power supply cooling exhaust .......................... Left side of chassis
Environmental
Maximum altitude............................................. 4,600 m (570 mbar)
(at 25 °C ambient)
Measurement Category..................................... I
Pollution Degree ............................................... 2
For indoor use only.
Note
Measurement Categories CAT I and CAT O (Other) are equivalent. The input
circuits are not intended for direct connection to the MAINs building installations of
Categories CAT II, CAT III, or CAT IV.
Voltage
Maximum Ripple and Noise
+3.3 V
50 mV
pp
+12 V
120 mV
pp
+5 V
50 mV
pp
-12 V
50 mV
pp
