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|  MIL-R-50749(MU)
8 August 1973
shall apply. During vibration exposure, perform the test of 4.6.4 to
determine compliance with 3.3.2030 Subsequent to vibration exposure,
examine the rangefinder for structural failures, loose hardware, wire
breakage, abrasion, and contamination of optical componenta. Per-
form the tests of 4.6.7.2, 4.6.9, and 4.6.16 through 4.6,24 to deter-
mine compliance with 3.3.2030
4.6.25.3 Vibration "B" Perform this test utilizing the
apparatus specified in Method 514.1 of MIL-STD-810 and in accordance
with Part I of Procedure I therein, except that the vibratory conditions
of 3.3.2, 4 shall apply Following vibration exposure, examine the
assembly for structural failures, loose hardware, wire breakage, and
abrasion. Perform the tests of 4.6.7.2, 4.6.9, and 4.6.16 through
4.6.24 to determine compliance with 3.3.2.4.
The shock test specifled in 4. 6,25.4 may be performed
NOTE:
at the unit level.
Shock test. Perform this test utilizing the apparatus
4.6.2.5.4
specified in M l tlmd 516.1 of MIL-STD-810, in accordance with Pro-
" cedure I therein, except the conditions of 3. 3.2.5 herein shall apply.
After the shocks, perform a visual-tactile examination for damage and
loose parts. Perform the tests of 4.6.7.2, 4.6.9, and 4.6.16 through
4.6.25 to determine compliance with 3.3.2.5.
4. 6.25.5 Humidity test. Perform
this test utilizing apparatu.
specified in Method 507 of MIL-STD-810,
in accordance with Procedure I
therein and with the conditions specified
in 3.3.2.6. During step 7 of
Procedure I perform the tests of 4.6.4,
and 4.6.9 to determine compli-
ance with 3.3.2.6.
4. 6.2% 6 Altitude test. Perform this test utilizing apparatus
specified in Method 500 of MIL-STD-810, in accordance with Procedure I
therein and with the conditions specified in 3.3.2.7. During Step 3 Of
Procedure 1, perform the tests of 4. 6.4 to determine compliance with
"3. 3.2.7.
4.6.25.7 Dust test Perform this test utilizing the apparatus "
specified in Method 510 of MIL-STD-810, in accordance with Procedure I
therein, except step 5. After exposure, perform the test of 4. 6.4 and
4.6.9 to determine compliance with 3.3.2.8.
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