MIL-STD-202H.pdf - 第227页
MI L - S TD - 202 - 217 A. U ni t under t es t . B. H ol d i ng f i x t ur e. C . H ol di ng s pr i ng. D . A ngl e i n di c at or a nd adjustment. E . H ol d i ng and dr op ping pin. F . D r opp i ng a rm. F I G URE 3 .…
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
5
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.
6
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
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Supersession data. The main body and 38 parts of this revision of MIL-STD-202 replace superseded MIL-STD-
202.
Custodians: Preparing activity:
Army - CR DLA – CC
Navy - EC
Air Force - 85 (Project 59GP-2015-030)
DLA - CC
Review activities:
Army - AR, AT, AV, CR4, MI, SM, TE
Navy - AS, OS, SH
Air Force - 19, 99
NSA - NS
NOTE: The activities listed above were interested in this document as of the date of this document. Since
organizations and responsibilities can change, you should verify the currency of the information above using the
ASSIST Online database at https://assist.dla.mil/
7
北测（上海）电子科技有限公司
联系方式：xuyj@beice-sh.com 13917165676