Appendix A Specifications
NI PXI-8250 User Manual A-2 ni.com
Monitoring Alert Limits (Green Status LEDs)
Voltage rail level....................................±5% (from nominal)
Intake temperature..................................0–50 °C
Fan speed................................................1,500 RPM or more for all fans
in a chassis
Monitoring Accuracy
Voltage rail level readings......................±100 mV
Intake temperature readings....................±1 °C
Fan speed readings..................................±50 RPM
Alert Relay Specification
Max current (switching/carry)................1 A
Max voltage............................................30 V
Max power..............................................30 W
Max cable length....................................20 m
Connectors
Front panel connector.............................8-pin 3.5 mm pitch,
screw-flange connector
Physical
Front panel dimensions...........................3U × 4 HP
Overall dimensions.................................13.34 × 2.03 cm (5.25 × 0.8 in.)
Weight....................................................150 g (5.29 oz)
Environment
Maximum altitude...................................2,000 m (800 mbar)
(at 25 °C ambient temperature)
Pollution Degree.....................................2
Indoor use only.