Larson Davis HVM200, Manual

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HVM200 Reference Manual C-4
Summed
Instantaneous
Acceleration
a
w

(t)
= instantaneous, summed acceleration
a
wx
(t), a
wy
(t), a
wz
(t)
= X, Y, and Z axis instantaneous accelera-
tion
K
x,
K
y,
K
z
= X, Y, and Z axis Sum Factors
The HVM200 uses the formula above to calculate the instanta-
neous, summed acceleration,
a
w

(t)
. This value is then used to
calculate a sum quantity for the A
rms
,A
min
, A
max
, A
mp
, A
eq
,
Peak, VDV, and PE. K factors affect only sum value and not
individual axis data.
Term Equation Description