Heading Sensor towed array ▼ Heading Accuracy 0.5° RMS ▼ Operates in dynamic environments with 360 degrees continuous roll ▼ Available in 1.1 inch, 1.0 inch or 0.9 inch diameter 2500 psi pressure rated housing ▼ ▼ RS232 or RS422 digital output Applications ▼ Towed Sonar Arrays ▼ Seismic Streamers ▼ Buoy Orientation ▼ Magnetic Compassing CHS Series The CHS series of high performance fully calibrated, small diameter heading sensors are ideally suited for towed sonar array and seismic streamer applications. The CHS heading sensor is a solidstate “strapdown” configuration that avoids the performance limitations of typical gimbaled systems and offers improved reliability. A 3-axis fluxgate magnetometer and 3-axis micro-machined accelerometer are combined with digital signal processing electronics and fully integrated within a small diameter pressure rated housing. The digital signal processor samples and converts the internal sensor signals to 16-bit digital data and automatically compensates for any temperature and misalignment effects. Factory calibration of scale factor, bias and misalignment angles is achieved by placing the heading sensor in high precision fixtures that apply rotational and magnetic fields. Scale factor and bias calibration coefficients are measured over the operating temperature range of the sensor. The calculated roll, pitch, and azimuth angles are provided on a bidirectional serial data link that can be factory configured for RS232 or RS422 and is user programmable for data transfer rates of up to 9600 baud. CHS110TB Dimensions Phone: 408.964.9700 Fax: 408.854.7702 E-mail: [email protected] w w w. m e m s i c . c o m Specifications Performance Digital Resolution Heading (° rms) Roll and Pitch (° rms) Environmental Operating Temperature (°C) Operating Pressure (psi) Electrical Power1 Output Data Rate (Hz) Output Format2 Physical Length (inches) Diameter (inches) Weight (oz.) Electrical Interface Housing CHS110TB CHS100TB CHS090TB 16 bit 1.0 0.5 16 bit 0.5 0.3 16 bit 0.5 0.3 -5 to +40 2500 -5 to +40 2500 -5 to +40 2500 +5V @ 75 mA 5 RS232 (300 to 9600 baud) +5V @ 75 mA 5 RS232 (300 to 9600 baud) +5V @ 75 mA 5 RS232 (300 to 9600 baud) 5.25 1.1 5.0 Flying leads 6” long Anodized Aluminum 5.25 1.0 5.0 Flying leads 6”long Anodized Aluminum 5.25 0.9 4.5 Flying leads 6”long Anodized Aluminum Notes 1 Other power input configurations available 2 RS422 is also offered as an option Specifications subject to change without notice Wire Color Function Red Black Orange Yellow +5 VDC Ground RS-232 serial in RS-232 serial out Pin Diagram for +5V RS232 Configuration Ordering Information ModelDescription Diameter CHS110TB CHS100TB CHS090TB 1.1 inch 1.0 inch 0.9 inch Heading sensor Heading sensor Heading sensor call factory for other configurations MEMSIC Inc. San Jose, California w w w. m e m s i c . c o m 6020-0030-04 Rev A