MIL-STD-1275E
2.4 Order of precedence.
In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption is obtained in writing from the applicable authority.
3 DEFINITIONS
3.1 Utilization equipment.
Utilization equipment is defined as the electronic device, equipment, or system subjected to the voltage range(s) indicated in this specification.
3.2 Equipment under test.
The Equipment Under Test (EUT) is defined as the electronic device, equipment, or system undergoing validation and/or verification testing or evaluation.
3.3 Operations.
3.3.1 Starting operation.
Electrical power during an engine starting event is sufficient for utilization equipment to provide
the level of performance specified in the utilization equipment's detailed specification.
3.3.2 Normal operation.
Electrical power is sufficient for utilization equipment to provide the level of performance specified in the utilization equipment's detailed specification.
3.4 Operational voltage range.
Voltage characteristics representative of the nominal operating voltage within a pre-defined tolerance or limit. Some variation in voltage is reasonable and expected; however, this variation remains within pre-defined limits of operation.
3.5 Transient waveform characteristics.
A transient waveform represents a time-varying electrical signal defined by characteristics such as rise/fall time, period, frequency of oscillation, pulse width, etc. Transients typically exceed pre-defined steady-state limits, return to and remain within the steady-state limits within a specified time. The transient may have positive or negative polarity and/or be of short or long duration. Transient voltage levels may also exceed the system battery voltage by several hundred volts depending on the source of the transient.
3.5.1 Rise time.
The rise time is the difference between when the rising edge of a voltage or current transient crosses a pre-defined low threshold to when the transient crosses a pre-defined high threshold. As defined in this standard, the low threshold is defined to be the time at when the amplitude of the rising edge is equal to ten percent (10%) of the maximum value of the transient. The high
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