Powerful Sensing Solutions for a Better Life CXTILT02 HIGH ACCURACY, DIGITAL SERIES The CXTILT-Series two-axis inclinometers offer an outstanding combination of resolution, dynamic response and measurement accuracy. The integration of MEMS sensing elements and digital signal processing yields a system that requires no user calibration. Resolution and settling time are programmable, allowing the performance to be optimized for a variety of applications. Features • Roll and Pitch Angle Output • Accuracy <0.2 deg Platform Leveling • User Programmable Resolution and Settling Time Precision Tilt Measurements • RS-232 Serial Digital Interface The CXTILT-Series inclinometers measure the tilt angle (roll and pitch) of an object with respect to the horizontal axis in a static environment. These high performance sensors incorporate two micro-machined low-g accelerometers, one oriented along the X-axis and one along the Y-axis. The CXTILT02EC provides superior performance in demanding measurement applications, where high accuracy must be maintained over a wide temperature range. The CXTILT02E offers a cost effective solution for limited temperature range applications. • Input Voltage 8-30 VDC • Rugged Aluminum Package Certifications • RoHS Compliant Applications •Platform Leveling •Precision Tilt Measurements •Geo-mechanical Leveling •Lab Instrumentation User Commands Phone: 408.964.9700 8-30 VDC @ <60mA RS-232 CXTILT02 Fax: 408.854.7702 RS-232 E-mail: [email protected] Roll & Pitch Angle w w w. m e m s i c . c o m CXTILT02 Performance HIGH ACCURACY, DIGITAL SERIES CXTILT02 Sensor Accuracy (°) Angular Range (°) Angular Drift w/Temp (°) Angular Resolution (°) Settling Time (s) Null Angular Offset (°) Non-Linearity (%) Transverse Sensitivity (%) EC E ± 0.2 ± 75 0.7 See Filter Settings See Filter Settings < 0.5 < 0.3 1 ± 0.4 ± 75 1.5 See Filter Settings See Filter Settings < 0.5 <3 1 Environment Temperature Range (°C) -40 to +85 0 to +70 Electrical RS-232 Interface (Baud) Supply Voltage (VDC) Supply Current (mA) 9600 8-30 60 Physical Size (in) (cm) Weight (oz) (kg) Connector 4.02 x 2.25 x 1.24 10.21 x 5.74 x 3.15 5.9 0.166 15 pin sub-miniature high density, male Standard Package Specifications Serial Commands Connector Pin Diagram Pin 4 3 1 11 Function Transmit Data Receive Data Ground Input Power Content of Data Packet Command Function Description/Response Byte Description R Reset. Resets the CXTILT firmware to default settings. An ASCII ‘H’ (72) is sent in response. 0 Header (always 255) 1 Pitch MSB (0-255) Get Angle Data Packet. The CXTILT returns its current angular position. The data is in a 6 byte packet (see content of data packet table). 2 Pitch LSB (0-255) 3 Roll MSB (0-255) Set Resolution Level. A 2byte command sequence that configures the CXTILT’s internal digital filter. The second byte, an integer of value 0-9, sets the level of filtering (see filter settings table). 4 Roll LSB (0-255) 5 Checksum (8-bit sum of bytes 1-4) G N<0-9> C Continuous Mode: Transfers packet continuously at maximum rate. S Stop Continuous Mode Note: Angles are represented as two’s complement 16 bit numbers. +90°corresponds to 32,767. -90°corresponds to -32,768. The 16-bit signed angle can be obtained by this simple ‘C’ expression: (int) Roll LSB + (int) 256 * Roll MSB Filter Settings Ordering Information Model Description CXTILT02EC Digital Tilt Sensor (-40 to +85°C) CXTILT02E Digital Tilt Sensor (0 to +70°C) This product has been developed exclusively for commercial applications. It has not been tested for, and makes no representation or warranty as to conformance with, any military specifications or its suitability for any military application or end-use. Additionally, any use of this product for nuclear, chemical or biological weapons, or weapons research, or for any use in missiles, rockets, and/or UAV’s of 300km or greater range, or any other activity prohibited by the Export Administration Regulations, is expressly prohibited without the written consent and without obtaining appropriate US export license(s) when required by US law. Diversion contrary to U.S. law is prohibited. Specifications are subject to change without notice. MEMSIC Inc. San Jose, California Filter Fc(Hz) Tc(s) Typical Resolution (°) 0 none none 0.320 1 10.0 0.016 0.101 2 8.0 0.02 0.091 3 4.0 0.04 0.064 4 2.0 0.08 0.045 5 1.0 0.16 0.032 6 .5 0.32 0.023 7* 0.25 0.64 0.016 8 0.125 1.27 0.012 9 0.0625 2.55 0.009 w w w. m e m s i c . c o m 6020-0011-05 Rev A