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| SENSOR PRODUCTS APPLICATIONS Oceanographic - Marine Compassing - Positioning of Buoys, Underwater Structures Drilling - Down Hole and Directional Attitude Reference Heading - Navigation of Unmanned Vehicles - Avionic Compassing Integration with GPS - Dead Reckoning Satellite Antenna Positioning Laser Range Finders - Surveying Applications Digital Compass Module HMR3000 E lectronic compass module that provides heading, pitch and roll output for navigation and guidance systems. Honeywell's solid state magnetoresistive sensors make this strapdown compass both rugged and reliable. This compass provides fast response time up to 20 Hertz and high heading accuracy of 0.5 with 0.1 resolution. FEATURES AND BENEFITS Fast Response Time Built with solid state magnetic sensors and no moving parts improves response time, allowing faster updates compared to gimballed fluxgates. Available as a circuit board 1.2 x 2.95 inches, weighing less than one ounce, or in an aluminum enclosure. Operates with less than 35 mA, allowing for long operation with a battery. Accuracy better than 0.5 with 0.1 resolution for critical positioning applications. Tilt range of 40 for both the roll and pitch allows operation for most applications. Calibration routines to compensate for distortion due to nearby ferrous objects and stray fields, such as vehicles. User settings of baud rate, update rate, output format, units, filter settings, deviation angles, alarms and warnings are stored internally in non-volitile memory. Small Size Low Power High Accuracy Wide Tilt Range Hard Iron Compensation User Configurable Features HMR3000 INTERFACE SIGNAL DESCRIPTIONS Communication HMR3000 communicates with an external host via RS232 or RS-485 electrical standard through simple ASCII character strings. ASCII characters are transmitted and received using 1 Start bit, 8 Data bits, (LSB first, MSB always 0), no parity, and 1 Stop bit. Baud rate is user configurable to 1200, 2400, 4800, 9600, 19,200 or 38,400. HMR3000 responds to all valid inputs received with correct checksum value. Compass Output HMR3000 can output three NMEA standard sentences, (HDG, HDT and XDR), three proprietary sentences SENSOR PRODUCTS (HPR, RCD and CCD), and an ASCII heading output for a digital display. HDG, HDT and HPR are the most commonly used sentences; the formats are given below. $HCHDG, Heading, Deviation, Variation $HCHDG,85.5,0.0,E,0.0,E*77 $HCHDT, Heading, True $HCHDT,271.1,T*2C $PTNTHPR, Heading, Pitch and Roll $PTNTHPR, Heading,Heading Status,Pitch,Pitch Status,Roll,Roll Status*hh The table shows pin assignments for the 9-pin D-shell connector. Power input can be either regulated 5V dc or unregulated 6V to 15V. Only one of the two power pins (9 or 8) should be connected in a given installation. Name TxD / B RxD / A GND 6-15V 5V Oper / Calib (2) Run / Stop (2) Ready / Sleep (2) Cont / Reset (2) In/Out Pin Description Out In In In In In In In In 2 3 5 9 8 1 6 4 7 RS-232 transmit out / RS-485 RS-232 receive in / RS-485 Power and signal common Unregulated power input Regulated power input Operate / Calibrate (3) input (open = Operate) Run / Stop (3) input (open = Run) Ready / Sleep (3) input (open = Ready) Continue / Reset (3) input (open = Continue) Typ -- -- -- 6 - 15 5 5% 0- 5 0- 5 0- 5 0- 5 Min (1) Max (1) Units -18 -18 18 18 V dc V dc 0 0 -20 -20 -20 -20 30 7.5 20 20 20 14 V dc V dc V dc V dc V dc V dc (1) Absolute maximum ratings. (2) Sink current requirement; 200 (Typ) 400 (Max) A. (3) Open input = high logic state. 2 HMR3000 SPECIFICATIONS Parameter Value Comments SENSOR PRODUCTS Heading Accuracy (1) Repeatability (3) (4) Resolution Units < 0.5 RMS (2) < 1.5 RMS 0.3 0.1 degrees / mils User selectable Dip < 50 , Tilt <20 * Dip < 75 , Tilt <20 * Pitch and Roll Range Accuracy Repeatability (3) (4) Resolution Units 40 0.4 0.6 0.2 0.1 degree/ mils User selectable Tilt < 20 Tilt > 20 * Magnetic Field (3) Dynamic Range Resolution 1.0 Gauss max 1 mGauss 0.5 Gauss range Electrical (4) Supply Voltage 5.0 Vdc regulated 6 - 15 Vdc unregulated 35 mA @ 6 Vdc 13 mA 2.0 mA Normal operation STOP Mode SLEEP Mode Power Interface Serial Baud Rate Standard Update Modes RS-232 RS-485 1200 to 38400 bps NMEA 0183 Continuous Strobed 1/min to 20 Hz per sentence selectable averaging Half Duplex Physical (4) Weight Dimensions 0.75 oz (22 g) 3.25 oz (92 g) 1.2 x 2.95 x 0.760 1.5 x 4.2 x 0.88 Circuit card only Housed Circuit card Housed compass Environment (5) Operating Temp Storage Temperature Shock Vibration -20 to 70 C -35 to 100 C 30 inch drop 20 - 2000 Hz Random 2 hrs/axis MIL-STD-810E; TM 516.4 MIL-STD-810E; TM 514.4 Manufacturing PCB Assembly IPC 6012 IPC 610 Class II or better 4.Typical 5.Meet or exceed. * Device orientation not to exceed 75 during operation or storage--may cause temporary loss of accuracy. 1.Heading accuracy assumes the Earth's magnetic field is only disturbed by hard iron fields, and has been compensated through calibration. 2.Calculated values. 3.Guaranteed by characterization or design. 3 HMR3000 SENSOR PRODUCTS SPECIFICATIONS HMR3000 CONNECTION DIAGRAM--COMPUTER RS232 TO HMR3000 RS-232 computer pins RX 2 TX 3 GND 5 6-15 Vdc HMR3000 pins 2 3 5 9 TX RX GND V+ RS-232 computer pins RX 2 TX 3 GND 5 5 Vdc Reg. HMR3000 pins 2 TX 3 RX 5 GND 8 V+ ac adapter Unregulated Supply Regulated voltage source Regulated Supply 4.200 (10.67) 3.250 (8.26) HMR3000 Compass Module Forward X Pitch Y S/N 300062 1.500 (3.81) Roll 0.188 (0.46) 0.188 (0.46) 0.150 (0.38) 0.812 (2.06 ) Z RS 232 485 0.062 0.062 (0.16) ( 0.16) inches (centimeters) ORDERING INFORMATION Type RS-232 to RS-485 B & B Electronics #485TBLED SD Control Echo Off Output Enclosure HMR3000-Demo-232* ..... RS232 RS-485 RS-232 TD RD GD 2 RD 3 TD 7 GD Shield TD(A) TD(B) RD(A) RD(B) GND +12V 1 2 3 4 5 6 7 HMR3000-D00-232 ......... RS232 ....... None (B) (A) Gnd Pwr 2 3 5 9 HMR3000-D21-232 ......... RS232 ....... Extended Base RS-485 Gnd +12VDC HMR3000-D00-485 ......... RS485 ....... None HMR3000-D21-485 ......... RS485 ....... Extended Base *Development Kit includes one module in aluminum enclosure, cabling with power supply, demonstration software for PC running WindowsTM and User's Manual. VAC +12VDC DB9 socket connector Honeywell reserves the right to make changes to any products or technology herein to improve reliability, function or design. Honeywell does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Solid State Electronics Center 12001 State Highway 55 Plymouth, MN 55441 1-800-323-8295 900204 Rev. B 12/99 |
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