Intel SR1530AHNA Product Specification - Page 36

Power Sub-System Intel® Server Chassis SR1530 Intel® Server System SR1530AH 2.38 PWOK (Power OK) Output Signal PWOK is a power OK signal and will be pulled HIGH by the power supply to indicate that all the outputs are within the regulation limits of the power supply. When any output voltage falls below regulation limits or when AC power has been removed for a time sufficiently long so that power supply operation is no longer guaranteed, PWOK will be de-asserted to a LOW state. The start of the PWOK delay time shall inhibited as long as any power supply output is in current limit. Table 24. PWOK Signal Characteristics Signal Type PWOK = High PWOK = Low Logic level low voltage, Isink=4mA Logic level high voltage, Isource=200μA Sink current, PWOK = low Source current, PWOK = high PWOK delay: Tpwok_on PWOK rise and fall time Power down delay: T pwok_off Open collector/drain output from power supply. Pull-up to VSB located in system. Power OK Power Not OK MIN MAX 0V 0.4V 2.4V 5.25V 4mA 2mA 100ms 1000ms 100μsec 1ms 200msec 2.39 Environmental Requirements 2.39.1 Temperature • Operating Ambient, normal mode (inlet air): +0°C min / +45°C max at 5000 feet above sea level. (At full load, with a maximum rate of change of 5°C/10 minutes, but no more than 10°C/hr) • Operating Ambient, stand-by mode (inlet air): +0°C min / +45°C max at 5000 feet above sea level. • Non-operating Ambient: -40°C to +70°C (Maximum rate of change of 20°C/hour) 2.39.2 Humidity Operating: To 85% relative humidity (non-condensing) Non-Operating: To 95% relative humidity (non-condensing) Note: 95% relative humidity is achieved with a dry bulb temperature of 55°C and a wet bulb temperature of 54°C. 2.39.3 Altitude Operating: Non-operating: to 5000 ft to 50,000 ft 26 Intel order number D77400-002 Revision 1.0