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WATSON INDUSTRIES DMS-SGP01, Owner'S Manual

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Watson Industries, Inc. 

 

DMS-SGP01 Rev B 03/22/2018 

 

1 

 

                      

 
 
 

DYNAMIC MEASUREMENT SYSTEM 

 
 
 
 

OWNER'S MANUAL 

 

PART NUMBER:  DMS-SGP01 

GPS Module & Antenna 

 
 
 
 
 

  

 
 

 

WATSON INDUSTRIES, INC. 

3035 MELBY STREET 

EAU CLAIRE, WI  54703 

 
 
 
 
 
 

 
 

Phone:  (715) 839-0628 

 

FAX:  (715) 839-8248 

 

email: [email protected] 

 
 

 
 

Summary of Contents for DMS-SGP01

Page 1: ...1 Rev B 03 22 2018 1 DYNAMIC MEASUREMENT SYSTEM OWNER S MANUAL PART NUMBER DMS SGP01 GPS Module Antenna WATSON INDUSTRIES INC 3035 MELBY STREET EAU CLAIRE WI 54703 Phone 715 839 0628 FAX 715 839 8248...

Page 2: ...dix A 1617 Activating Command mode or Double Spacebar Access to commands 1819 Determining and Setting Output Channels 1819 Setting Output Format 1920 Setting Heading Mode 1920 Setting Velocity Mode 20...

Page 3: ...in non volatile memory within the DMS The DMS SGP01 differs from a standard DMS with the addition of a GPS antenna and receiver This allows the DMS to output track heading instead of relative heading...

Page 4: ...over the duration of the test Rapid temperature variation may induce noticeable rate sensor bias drift which could result in degraded attitude accuracy Power Connectors This unit has an internal regu...

Page 5: ...and Z accelerations Bank Elevation and Heading and Forward Lateral and Vertical Accelerations Velocity Latitude Longitude Any combination of these data items can be selected for transmission via the R...

Page 6: ...ntended for short term use only since leaving biases uncorrected will allow errors to accumulate over time The accumulating bias error will result in small attitude errors Hold mode can provide better...

Page 7: ...cimal point one digit and a space for up to 399 9 Km Hr 7 A ten character string representing the Latitude starting with a or a followed by two digits a decimal point five digits and a space for up to...

Page 8: ...imal ASCII format but in a compact binary message In this format there are nominally 13 words sent that represent 6 fourteen bit output channels followed by a carriage return Again the channels may be...

Page 9: ...permanent by keying in the quote character Double spacebar at initialization is required for access to all of these commands The command calls a menu which allows any of several parameters to be set F...

Page 10: ...mmended that this signal be supplied to the DMS The unit can receive speed information in two formats an analog or digital signal The internal GPS receiving unit provides the digital signal The option...

Page 11: ...ongitude 1 5m rms Environmental Temperature Operating 40 C to 85 C Temperature Storage 55 C to 85 C Vibration Operating 2 5g rms 20 Hz to 2 KHz Vibration Survival 10g rms 20 Hz to 2 KHz Shock Survival...

Page 12: ...1 No Connection 7 Not Used 18 Y Axis Acceleration Analog Output 2 TXD 8 Coast Command 19 Z Axis Acceleration Analog Output 3 RXD 9 No Connection 20 Forward Acceleration Analog Output 4 Shorted to pin...

Page 13: ...Watson Industries Inc DMS SGP01 Rev B 03 22 2018 13 Figure 2 GPS Antenna Dimensions...

Page 14: ...ncluding but not limited to any implied warranty of merchantability or fitness for a particular purpose Excluded from any warranty given by Watson Industries are products that have been subject to abu...

Page 15: ...elby Street Eau Claire WI 54703 ATTN Service Department Telephone 715 839 0628 Fax 715 839 8248 email support watson gyro com Returning the Product Product shall be packaged making sure there is adequ...

Page 16: ...gular Rate 99 9 s 200 s Heading Rate 99 9 s 200 s User Channel 1 9 99 VDC 10 VDC User Channel 2 9 99 VDC 10 VDC User Channel 3 9 99 VDC 10 VDC User Channel 4 9 99 VDC 10 VDC Ground Track 2 Forward Vel...

Page 17: ...o System Error Bit 2 Set Heading Error Bit 1 Set Elevation Error Bit 0 Reset No Bank Error The Flag Bits contains the following information Bit Description If Set 0 GPS Heading fail 1 GPS Velocity fai...

Page 18: ...currently active To change which channels are output type this will bring up the menu again Now type 2 to set up channels The following message will appear To proceed type Y or y Now each channel wil...

Page 19: ...d Mode See above To set the heading mode type in This will bring up the menu Typing in 4 will bring up this menu To set the heading mode to Track Heading type 1 To use this mode the GPS antenna must b...

Page 20: ...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 TYPE IN T...

Page 21: ...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 TYPE IN THE NUMBER OF YOUR SELECTION OR Q TO QUIT 1 ADJUST TIME CONSTANT...

Page 22: ...angular displacement signals Careful note should be taken of the angles indicated in the reference mode The sensor should then be tipped on the pivot into the other stable position and the angle agai...

Page 23: ...the sensor at a 45 angle to the horizontal in pitch only taking care not to move the sensor at an angular rate of more than 100 sec The Forward Lateral and Vertical Acceleration outputs should not cha...

Page 24: ...B is then connected to the LSB as a 16 bit word This word is then shifted left to shift out the 7th bit always set to 1 What remains is a signed fractional word with a resolution of 13 bits plus a sig...

Page 25: ...the data Bank Elevation Heading X angular rate Y angular rate Z angular rate 2728 912 57344 1636 2460 9008 Convert to units counts x scale factor For bank elevation Scale factor is 180 32768 counts Fo...

Page 26: ...resolution of 13 bits plus a sign bit To convert binary data Need split each word into two bytes Remove the most significant bit from each byte Shift lower byte left once to remove 1 bit space between...

Page 27: ...ngular rate Y angular rate Z angular rate 0 920 3144 1636 2460 9008 Convert to units counts x scale factor For Bank Elevation Scale factor is 180 32768 counts For Heading Scale factor is 360 65536 cou...

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