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Vibration testing is performed to
determine the resistance of equipment to vibrational stresses expected in its
shipment and application environments. Vibration can cause:
-
Wire
chafing.
-
Loosening
of fasteners.
-
Intermittent
electrical contacts.
-
Touching
and shorting of electrical parts.
-
Seal
deformation.
-
Component
fatigue.
-
Display
/ Touch Panel misalignment.
-
Cracking
and rupturing.
-
Excessive
electrical noise.
Two
Vibration tests are performed on the Ranger Series (figures 16 & 17 of
Method 514.4). The minimum integrity test is a Power Spectral Density =
0.04G²/Hz, 20 to 1000Hz, descending 6dB/oct to 2000Hz. Three axes are tested,
1-hour per axis. Figure 17 is a Logarithmic sweep 5 to 500Hz beginning at
0.20" displacement, 30 minutes per axis.
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