MIL-PRF-32516
FIGURE 3. Random vibration profile.
4.5.10 Bench handling test (see 3.11.5). With the diagnostic equipment operating as in
the satisfactory operating check, place the diagnostic equipment in a suitable position for its
servicing on a horizontal, solid wooden bench top at least 4.1 centimeters (cm) thick. The test
shall be performed as specified in Steps 1 through 5, in a manner simulating shocks liable to
occur during its servicing.
a. Step 1. Using one edge as a pivot, lift the opposite edge of the chassis until one of the
conditions specified in a through c occurs (whichever occurs first):
(1) The chassis forms an angle of 45 degrees with the horizontal bench top.
(2) The lifted edge of the chassis has been raised 4 inches above the horizontal
bench top.
(3) The lifted edge of the chassis is just below the point of perfect balance.
Let the chassis drop back freely to the horizontal bench top. Repeat, using other
practical edges of the same horizontal face as pivot points, for a total of four
drops.
b. Step 2. Repeat Step 1, with the diagnostic equipment resting on other faces until the
test item has been dropped for a total of four times on each face on which the test item
could reasonably be placed during its servicing.
c. Step 3. Repeat Steps 1 and 2 with diagnostic equipment not operating and cabinet or
case removed, except for equipment where the case serves as the only chassis or support
structure.
d. Step 4. Examine the diagnostic equipment for mechanical damage. Damage to the
instrument, other than cosmetic, will constitute a failure.
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