MIL-STD-202H.pdf - 第206页
MI L - S TD - 202 -2 1 4 T ABL E I. V al ue s f or t es t - c ond i t i on I . 1 / C har ac t er i s t i c s Te s t c ond i t i o n l et t er P ow er s pec t r al dens i t y O v er al l r ms G A B C D E F G H J K . 02 . …
MIL-STD-202-214
4.3 Procedure. The specimen, or substitute equivalent mass, shall be mounted in accordance with 3 and the
monitoring equipment attached, if applicable, in accordance with 4.1.2. The vibration machine shall then be operated
and equalized or compensated to deliver the required frequencies and intensities conforming to the curves specified
test condition I, figure 1, or test condition II, figure 2 (see 4.1.1). If the order of application of the different directions is
critical, it also shall be specified in the individual specification. The specimen shall then be subjected to the vibration
specified by the test condition letter (see tables I and II) for the duration as specified in the individual specification:
3-minutes; 15-minutes; 1-1/2 hours; or, 8-hours;
In each of three mutually perpendicular directions, and in the order specified as applicable. The measurements made
before, during, and after the test shall be made in accordance with 5.1 and if the specimen shall be monitored during
the test, the details shall be as specified in 4.1.2.
FIGURE 1. Test condition I, random vibration test-curve envelope (see table I).
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北测（上海）电子科技有限公司
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MIL-STD-202-214
TABLE I. Values for test-condition I. 1/
Characteristics
Test
condition letter
Power spectral
density
Overall
rms G
A
B
C
D
E
F
G
H
J
K
.02
.04
.06
.1
.2
.3
.4
.6
1.0
1.5
5.35
7.56
9.26
11.95
16.91
20.71
23.91
29.28
37.80
46.30
1/ For duration of test, see 4.3
FIGURE 2. Test condition II, random vibration test-curve envelope (see table II).
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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-202-214
TABLE II. Values for test-condition II. 1/
Characteristics
Test
condition letter
Power spectral
density
Overall
rms G
A
B
C
D
E
F
G
H
J
K
.02
.04
.06
.1
.2
.3
.4
.6
1.0
1.5
6.21
8.78
10.76
13.89
19.64
24.06
27.78
34.02
43.92
53.79
1/ For duration of test, see 4.3
5. DETAILED REQUIREMENTS
5.1 Measurements. Measurements are to be made before and after the required number of shocks unless
otherwise specified, and during the test if specified.
5.2 Summary. The following details are to be specified in the individual specification:
a. Monitoring instrumentation, if applicable (see 4.1.2).
b. The number and location of test points (see 4.1.2.1).
c. Method of mounting and orientation (see 4.2).
d. Test condition (I or II); letter (A-K); and duration of test (3-minutes, 15-minutes, 1-1/2 hours, or 8-hours)
(see 4).
e. Order of application of vibration direction, if applicable (see 4.3).
f. Measurements before, during, and after test (see 5.1).
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