Specifications* Parameter 31207B Range Measurement Full Scale, Option R1k2 Sensitivity at 25°C Option R1k2 Drift Tmin to Tmax Zero g Bias Level At 25°C Drift Tmin to Tmax Alignment Deviation from Ideal Axes g Sensitivity Triaxial Rate Gyro ±1000, ±1200°/sec Range < ±6°/sec Offset Stability Measurement Specialties, Inc. 2236 N. Cleveland-Massillon Rd. Akron, Ohio 44333-1255 USA (330) 659-3312 www.meas-spec.com precisionsensors.meas-spec.com 2 3 3 1 2 Nonlinearity Frequency Response Noise Density Self Test Input Impedance Self Test Response w/ST pin grounded ±1200°/sec FSR ±1000°/sec FSR Temperature Sensor Sensitivity +25°C Bias Level Outputs Output Voltage Swing Power Supply (Vs) Input Voltage Limits Input Voltage - Operating Input Current Rejection Ratio Temperature Range (Ta) Mass Shock Survival Data subject to change without notice †Scale linearly with range option Rnnn Min Typical Max ±1200† °/sec 1.7† mV/°/sec % FSR 2.50 ±3.0 ±1.5 0.2 2.5 0.1 0 0.1 10 ±6.0 1 100 0.945 [24,00] 0.354 [9,0] 0.145 0.125 V V 9.0 2.5 mV/°K V 0.25 4.75 0.945 0.354 [24,00] [9,0] Third angle 3 1 2 Mounting Instructions ►Use ► two 3.0 mm x 0.5 mm thread machine screws to attach to one of the three 31207B mounting faces [recommended torque 5 lbf-in (0.56 N.m)]. DO NOT thread a screw more than 2.5 mm (0.100 inch or 5 turns) into any 31207B mounting face as this can damage the gyro and will VOID the warranty. ►A ► light film of oil or silicone grease can be used to enhance contact between two mounting surfaces. ►A ► locking compound should be used on all threads to prevent screws loosening due to vibrations. Three-Year Limited Warranty Measurement Specialties, Inc. warrants this product against defects in materials and workmanship for a period of three years from date of shipment. During the warranty period, Measurement Specialties will, at its option, either repair or replace products which prove to be defective. Exclusions This warranty does not apply to defects or damage resulting from: •Improper installation or maintenance •Customer supplied software or interfacing •Unauthorized modification or misuse •Operation outside of the product specifications Limitations The warranty set forth above is exclusive and no other warranty, whether written or oral, is expressed or implied. Measurement Specialties specifically disclaims the implied warranties of merchantability and fitness for a particular purpose. Some jurisdictions do not allow limitations on how long an implied warranty lasts, so the above limitation or exclusion may not apply to you. However, any implied warranty of merchantability or fitness is limited to the three-year duration of this written warranty. Warranty Service To obtain service during the warranty period, products must be returned, transportation prepaid, to Measurement Specialties. 31207B Rev. 8/17/13 How to Use the 31207B Dimensions in inches [mm], identical for each view where applicable. Cable to 9-pin male D-Shell connector V -20 +38 V +8.5 +36 V 18 30 mA >120 dB -40 +85 °C 35 grams -2000 +2000 g *within one year of calibration 2 Gyros measure rotation around each axis as defined by right hand rule. % FSR Hz °/sec/√Hz kΩ 1.115 [28,30] 0.295 [7,50] 3 mm x 0,5 mm Thread 3,5 mm [0.138] Deep 0.295 [7,50] (6) Mounting Holes on 3 sides V °/sec degrees °/sec/g 3 1 Units Gyro Connections Pin Description Cable Wire 1 2 3 4 5 6 7 8 9 Gyro 1 Signal common Gyro 2 +5V Output Gyro 3 Temperature Self Test Power Ground* Brown Red Orange Yellow Green Blue Violet Grey White } } } } twisted pair twisted pair twisted pair twisted pair *connected to braided shield at D-shell pin CAUTION Improper wiring, particularly Power, may cause permanent damage and void the warranty. Pins other than +Vs should not exceed 5 V. ►Connect ► a +8.5 to +36 V DC power source to pin 8, ground to pin 9. ►Connect ► a differential or floating input A/D converter to each signal and signal common pins (pins 1 and 2 for Gyro 1, pins 3 and 2 for Gyro 2, pins 5 and 2 for Gyro 3 and pins 6 and 2 for Temperature). For best results, use a converter with an input impedance greater than 1 MΩ and common mode rejection ratio greater than 60 dB. Single-ended converters are not recommended but if used, leave pin 2 unconnected to eliminate ground loops. A positive rotation (labeled on the gyro cover) causes a positive change on the corresponding output. Rotation is measured around each axis as defined by right hand rule. ►Keep ► cable lengths between the angular rate sensor and A/D converter as short as practical. Use shielded twisted pair wiring, especially near electric motors or other noise sources. ►As ► a rule of thumb, sample frequency should be at least 10 times the signal bandwidth when linear interpolation is used for signal reconstruction. Built-in or external low-pass filtering can be used to lower the noise floor and eliminate spurious peak measurements from short-duration shock impulses with insignificant energy content. ►A ► logic 0 on the self-test input will add to all three gyro outputs (see Specifications for amount). An output that changes significantly more or less (±30%) than specified indicates a defective channel, shorted pin or broken wire. The self-test signal is approximate and should not be used for calibration. If the self-test feature will not be used, pin 7 may be left disconnected.