MIL-STD-202H.pdf - 第226页
MI L - S TD - 202 - 217 A CCE P T A N CE CRI T E RI A : E ac h uni t t es t ed s ha l l m eet t he ac c ept a n ce . SH AKER N O I SE Timebase ad j u s t ed t o l oc a t e s hak er r ev er s a l no i s e bur s t s at end…
MIL-STD-202-217
FIGURE 1. Typical test circuit.
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北测（上海）电子科技有限公司
联系方式：xuyj@beice-sh.com 13917165676
MIL-STD-202-217
ACCEPTANCE CRITERIA: Each unit tested shall meet the acceptance.
SHAKER NOISE
Timebase adjusted to locate shaker reversal noise bursts at ends of oscilloscope trace. Test unit
not mounted. a
INHERENT MECHANICAL NOISE
Synchronized spike may appear at different locations on time base for each unit under test. b
Non-synchronized spikes of any magnitude appear randomly and may disappear as test progresses. Unit
is rejectable. c
EXCESSIVE MECHANICAL NOISE
Synchronized trace masks more than 50% of oscilloscope trace. Unit is rejectable. d
FIGURE 2. Representative oscilloscope traces.
PARTICULATE
NOISE
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北测（上海）电子科技有限公司
联系方式：xuyj@beice-sh.com 13917165676
MIL-STD-202-217
A. Unit under test.
B. Holding fixture.
C. Holding spring.
D. Angle indicator and adjustment.
E. Holding and dropping pin.
F. Dropping arm.
FIGURE 3. Shock test fixture.
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北测（上海）电子科技有限公司
联系方式：xuyj@beice-sh.com 13917165676