Appendix A
Specifications
A-2
©
National Instruments Corporation
Table A-2.
DC Output Specifications for AC-Only Power Supply
Characteristic
Description
Maximum Usable Power
300 W
DC Current Capacity (I
MP
)
Voltage
I
MP
(Steady-State Current)
+3.3 V
35 A
+12 V
4 A
+5 V
25 A
–12 V
1 A
Load Regulation
Voltage
Regulator
+3.3 V
< 1.5%
+12 V
< 5%
+5 V
< 1%
–12 V
< 5%
Maximum Ripple and
Noise
1% ripple, 1% noise
20 MHz bandwidth
Over-Current Protection
All outputs protected from short circuit
and overload, automatic recovery
Over-Voltage Protection
3.3 V, 5 V clamp at 20% to 30% above
output voltage
+12 V and –12 V clamp at 26 to 29 V
referenced and – terminals
Power Supply/Fan Unit
MTTR
Replacement in under 5 minutes
Table A-3.
AC Input Specifications for DC-Capable Power Supply
Characteristic
Description
Input Voltage Range
85–265 VAC
Input Frequency Range
45 to 65 Hz
Over-Current Protection
5 A circuit breaker
