CMR3000-D0X VTI Hamlin, CMR3000-D0X Datasheet - Page 24

• Manufacturer Part Number: CMR3000-D0X
• Description: Cmr3000-d0x Block Diagram With Digital Spi And I 2 C Interface
• Manufacturer: VTI Hamlin

7.4 Noise
7.5 Bandwidth
7.6 Cross-axis sensitivity
VTI Technologies Oy
Myllynkivenkuja 6
P.O. Box 27
FI-01621 Vantaa
www.vti.fi
Sensor’s ideal output Output
angular rate from –FS to FS.
Output noise n
values when the sensor is not moved nor rotated (Ω
Average noise/axis is calculated by
Equation 7
where n is sensor’s noise [dps] per axis, n
noise [dps] and n
Signal bandwidth is measured with a rate table by rotating the table between two positions while
sweeping the rotating frequency and keeping the angular rate constant.
Cross-axis sensitivity is sum of the alignment and the inherent sensitivity errors. Cross-axis
sensitivity of one axis is a geometric sum of the sensitivities in two perpendicular directions.
Cross-axis sensitivity [%] of X-axis is given by
Equation 8
where S
angular rate [Count/dps] and S
Cross-axis sensitivity [%] of Y-axis is given by
Equation 9
where S
angular rate [Count/dps] and S
Cross-axis sensitivity [%] of Z-axis is given by
Equation 10
where S
angular rate [Count/dps] and S
Cross
Cross
Cross
n
=
1
3
Y
Z
X
XY
YX
ZX
(
=
=
=
n
2
X
±
±
is Z-axis sensitivity to X-axis angular rate [Count/dps], S
±
is X-axis sensitivity to Y-axis angular rate [Count/dps], S
is Y-axis sensitivity to X-axis angular rate [Count/dps], S
+
n
X
S
S
S
, n
Y
2
YX
ZX
XY
Z
+
Y
2
S
2
is sensor’s Z-axis noise [dps].
S
S
2
n
+
Y
and n
+
Z
+
X
Z
2
S
S
)
S
Doc.Nr. 82112900.A.02
YZ
,
ZY
XZ
2
Z
2
2
in X,Y and Z directions is the measured standard deviation of the output
⋅
⋅
100
⋅
100
@Ω
100
X
Y
Z
%,
is sensitivity of Z-axis [Count/dps] angular rate.
(in Equation 6) is calculated by fitting a straight line to measured
is sensitivity of X-axis [Count/dps] angular rate.
is sensitivity of Y-axis [Count/dps] angular rate.
%,
%,
X
is sensor’s X-axis noise [dps], n
X
= Ω
Y
= Ω
Z
XZ
YZ
ZY
= 0 dps) in room temperature.
is Z-axis sensitivity to Y-axis
is X-axis sensitivity to Z-axis
is Y-axis sensitivity to Z-axis
Y
is sensor’s Y-axis
CMR3000-D0X Series
Rev. A.02
24/ 26