Intel Pentium 4 Processor with 512-KB L2 Cache on 0.13 Micron Process Thermal Design Guidelines

Intel Thermal Mechanical Reference Design Information
R
44 Intel
®
Pentium
®
4 Processor Thermal Design Guide
Figure 19. Random Vibration PSD
0.001
0.01
0.1
1 10 100 1000
Frequency (Hz)
PSD (g^2/Hz)
3.13GRMS (10 minutes per axis)
5 Hz
500 Hz
(5, 0.01)
(20, 0.02)
(500, 0.02)
4.1.5.3 Shock Test Procedure
Recommended performance requirement for a motherboard:
• Quantity: 3 drops for + and - directions in each of 3 perpendicular axes (i.e., total 18 drops).
• Profile: 50 G trapezoidal waveform, 11 ms duration, 170 in./s minimum velocity change.
• Setup: Mount sample board on test fixture.
Figure 20. Shock Acceleration Curve
0
10
20
30
40
50
60
0 2 4 6 8 10 12
Time
(
milli-seconds
)
A
c
c
e
l
e
r
a
t
i
o
n
(g)