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Related Manuals for WATSON INDUSTRIES DMS-EGP01
Summary of Contents for WATSON INDUSTRIES DMS-EGP01
- Page 1 DYNAMIC MEASUREMENT SYSTEM OWNER'S MANUAL PART NUMBER: DMS-EGP01 GPS Module & Antenna WATSON INDUSTRIES, INC. 3035 MELBY STREET EAU CLAIRE, WI 54703 Phone: (715) 839-0628 FAX: (715) 839-8248 email: support@watson-gyro.com Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015...
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Page 2: Table Of Contents
Appendix C....................... 24 Watson Industries prides itself on solving customer problems and serving their needs in a timely fashion. This manual is intended to facilitate this goal and to provide written information about your product. We ask that you carefully read this manual. -
Page 3: Introduction
Calibration is achieved by using the maintenance software to store data in non-volatile memory within the DMS. The DMS-EGP01 differs from a “standard” DMS with the addition of a GPS antenna and receiver. The GPS receiver also provides a vehicle velocity that is used to improve accuracy in high dynamic environments. -
Page 4: Installation
Mounting The DMS-EGP01 has four 0.20” diameter mounting holes for 10-24 screws (See Figure 1). If high shock loads are expected (greater than 20G or repeated shocks greater than 10G), appropriate shock mounting should be used to prevent damage. -
Page 5: Normal Operation
The message can be read by using a terminal program or by using the terminal mode of Watson Industries’ communication software. The DMS can also be “re-initialized” after it has been turned on. This is especially useful if the sensor has been used in severe maneuvers that have over-ranged the angular rate sensors and caused significant errors to accumulate. -
Page 6: Free Mode
(“g”,“i”, or “r”), an error over-range condition is indicated (see below). A seven character string representing the bank angle starting with a “+” or a “-“, followed by three digits, a decimal point, one digit and a space for up to ±179.9 degrees. Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... - Page 7 “*” command from the interfacing computer. Data transmission sent by the DMS can also be suppressed or restored by a “+” command from the interfacing computer. Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015...
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Page 8: Rs-232 Input Commands
Hold mode should not be used for more than a few minutes, because errors can accumulate. Double spacebar at initialization is required for access to this command. A “K” or “k” will clear the Free Mode Command and Hold Mode Command. Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... -
Page 9: Analog Outputs
±10V 1g/V ±10g Lateral Acceleration ±10V 1g/V ±10g Vertical Acceleration ±10V 1g/V Note that the analog switches are disabled after certain serial commands are sent to the unit. This prevents software/hardware switch conflicts. Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... -
Page 10: Analog Inputs
Leave pin open if not in use. Ground to command. NOTE: The analog digital inputs are all disabled if any equivalent serial command is sent via RS- 232. This is to prevent hardware/software conflicts. Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... -
Page 11: Specifications
Acquisition time for GPS units is typical for the contiguous United States. Acquisition time may differ due to interference in your geographic area. • Specifications are subject to change without notice. • This product may be subject to export restrictions. Please consult the factory. Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... -
Page 12: Connections / Dimensions
Ground S/N: Shorted to pin 4 Shorted to pin 8 Shorted to pin 7 No Connection ** The user receives on this line. CAUTION DELICATE INSTRUMENT HANDLE WITH CARE Figure 1 DMS-EGP01 Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... -
Page 13: Figure 2 Antenna Dimensions
Figure 2 Antenna Dimensions Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... -
Page 14: Warning
DISCLAIMER The information contained in this manual is believed to be accurate and reliable; however, it is the user’s responsibility to test and to determine whether a Watson Industries’ product is suitable for a particular use. Suggestion of uses should not be taken as inducements to infringe upon any patents. -
Page 15: Customer Service
Customer Service All repairs, calibrations and upgrades are performed at the factory. Before returning any product, please contact Watson Industries to obtain a Returned Material Authorization number (RMA). Return Address & Contact Information Watson Industries, Inc. 3035 Melby Street Eau Claire, WI 54703... -
Page 16: Appendix A
Heading Error Flag System Error Flag Velocity Error Flag Ready Flag Checksum Error Flag Not Used (always zero) Example: The status channel output in ASCII Decimal is “146” Octal Digit Binary Equivalent Status Bit # Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... - Page 17 Reset Not in Free Mode Bit 4 GPS Enabled Bit 3 Reset Not in Reference Mode Bit 2 Reset Bit 1 Reset Valid GPS velocity data Bit 0 Reset Valid GPS heading data Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015...
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Page 18: Activating Command Mode Or Double Spacebar Access To Commands
Type 'Y' or “y” to output channel, type 'N' or “n” to remove channel When you get to bottom of list, this message will appear: Y = GOBACK, N = INSTALL DATA & QUIT, Q = QUIT DO YOU WANT TO TRY TO SET DATA AGAIN? Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... -
Page 19: Setting Output Format
2 = SET OUTPUT CHANNELS 3 = LIST CURRENT OUTPUT CHANNEL SELECTION 4 = SELECT HEADING SOURCE 5 = SELECT VELOCITY SOURCE 6 = SELECT ALTITUDE CORRECTION Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015 7 = SET NEW BAUD RATE... - Page 20 To set to Analog Velocity type ‘2’. This is the normal DMS mode (non-GPS). Make sure that the proper analog velocity signal is applied. To make this selection the default the next time you power the unit on type in " (a quote mark.) Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015...
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Page 21: Setting Altitude Correction
To turn on Altitude Correction type ‘1’. To shut off Altitude Correction type ‘2’. To make this selection the default the next time you power the unit on type in " (a quote mark.) Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... -
Page 22: Appendix B
The values of Forward, Lateral and Vertical Acceleration should remain at the values when level. Repeat the test for the roll axis of the sensor. Under this test, Y and Z acceleration will read 0.71G and the X acceleration will retain its value at level. Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... - Page 23 100 °/sec limit. The sensor should then be rotated about the vertical and the Yaw output will respond accordingly. The test should then be repeated for the Roll axis. Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015...
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Page 24: Appendix C
0x80 0x99 0x99 0xCC Remove the most significant bit from each byte: Bank Elevation Heading X Rate Y Rate Z Rate 0x05 0x7E 0x70 0x03 0x7B 0x11 0x2A 0x1C 0x00 0x19 0x19 0x4C Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015... - Page 25 For Angular Rates: Scale factor is: (200 ˚/sec) / 32768 counts Bank Elevation Heading X angular rate Y angular rate Z angular rate 14.991 ˚ -5.010 ˚ 315 ˚ 9.985 ˚/sec -15.015 ˚/sec 54.980 ˚/sec Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015...
- Page 26 Shift lower byte left once (to remove 1 bit space between bytes): X Accel Y Accel Z Accel X Rate Y Rate Z Rate 0x00 0x7E 0x79 0x03 0x7B 0x11 0x00 0x34 0xDC 0x32 0x32 0x98 Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015...
- Page 27 Z Accel X angular rate Y angular rate Z angular rate 0.0000g -0.2808g -0.9595g 9.985 ˚/sec -15.015 ˚/sec 54.980 ˚/sec 9600 Baud 8 Bit Data 1 Start Bit 1 Stop Bit No Parity Watson Industries, Inc. DMS-EGP01 Rev A 02/12/2015...