CXM544, Micro Orientation Sensor

*
C
Magnetometers
MICRO-ORIENTATION SENSOR
t High Accuracy – Operates to 70°C
t Calculates and Outputs Roll, Pitch,
Yaw Data
t Miniature Size:
0.80" x 0.80" x 4.6"
t Digital Serial Output
t Contains a 3-axis Magnetometer
and a 3-axis Accelerometer
Applications
CXM544
The CXM544 system contains a
micro-machined 3-axis accelerometer
and a high accuracy 3-axis fluxgate
magnetometer. These sensors are
sampled by an internal A/D converter
and microprocessor subsystem
that outputs 16-bit digital data
representing the magnetometer and
accelerometer readings and the
calculated roll, pitch and azimuth
orientation angles of the CXM544
system.
All of the system electronics, including
the accelerometer and magnetometer
sensors are mounted in a miniature
rectangular package of dimensions
0.80" x 0.80" x 4.6". Input power is
user selectable from either +5 VDC
or +7 to +12 VDC.
The CXM544 communicates through
a bidirectional serial data link, which
can be selected from either TTL
compatible or RS-232 compatible
protocols, at a user programmable
data transfer rate of up to 9600
baud. The CXM544 uses an ASCII
command set, but the user can
enable a high-speed binary
communications protocol.
The CXM544 scale factors, zero-bias
factors and alignment angles are
measured by placing the system into
precision rotational and magnetic
field-applying fixtures. Scale and offset calibration factors are calibrated
over the 0 to 70°C temperature
range. The integral microprocessor
uses this system calibration data
(stored in EEROM) to correct for
alignment, scale and offset factors at
any given temperature.
magnetometers
t Borehole Logging
t Buoy Orientation
t Magnetic Compassing
t Towed Sonar Arrays
The magnetometer noise level is
5 x 10-6 Gauss and the accelerometer
noise level is 2 x 10-4 g. The maximum
data throughput is approximately
3 readings/sec if all 6 outputs are
transmitted. When viewed as a
roll, pitch, and yaw sensor, the
temperature compensated CXM544
system has an overall accuracy of
± 0.5° for roll and pitch and ± 1.5°
for azimuth.
phone: 408.965.3300
t
fax: 408.324.4840
t
e-mail: [email protected]
t
w e b : w w w. x b o w. c o m
t
Specifications
Performance
Angular Accuracy
Roll and Pitch (°)
Azimuth (°)
Noise level Magnetometer (Gauss)
Noise level Accelerometer (g)
Linearity (% FS)
Axis Alignment (°)
Alignment of Axes w/ Package Reference Frame (°)
Serial Output
Electrical
Power
Physical
Size
Weight
Leads
CXM544
± 0.5
± 1.5
5 x 10-6
2 x 10-4
± 0.1
± 0.2
± 0.2
RS-232 or TTL
+5V @ 55 mA or +7 to +12V @ 65 mA
Wire Color
Function
Red
Black
White/Red
Orange
Yellow
White/Orange
White/Yellow
+7 to +12 VDC
Ground
+5 VDC
RS-232 serial in
RS-232 serial out
TTL serial in
TTL serial out
0.80" x 0.75" x 4.6" (2 x 1.9 x 11.68 cm)
1.61 oz (50 gm)
Flying leads 6" (15.24 cm) long
Pin Diagram
Specifications subject to change without notice
magnetometers
t
Ordering Information
Model
t
Description
CXM544
c r o s s b o w t e c h n o l o g y, i n c
Digital 3-axis Magnetometer
t
41 daggett drive
t
san jose, ca 95134-2109