GPS16X-HVS GPS Receiver
Contents
1. being received by the datalogger Appendix A Changing GPS16X HVS Settings As configured by Campbell Scientific the GPS16X HVS will output the NMEA 0183 GPGGA and GPRMC data strings once a second the PPS signal is enabled with a duration of 100 milliseconds and the baud rate is set to 38 400 baud Special software SNRSRCFG EXE is available from Garmin International for system setup The GPS16X HVS user manual available from Garmin International provides technical details beyond the scope of the Campbell Scientific user manual Settings used by Campbell Scientific for GPS16X HVS setup GPS Base Model GPS 16 X Fix Mode Automatic Baud Rate 38 400 Dead Reckon Time 30 sec NMEA output time 1 sec Position pinning off NMEA 2 30 mode off Power Save Mode off Normal mode PPS mode Hz PPS Length 100 mS Phaze output Data off DGPS Mode WAAS only Differential mode Automatic Earth Datum Index WGS 84 Selected Sentences GPGGA and GPRMC Common changes would be baud rate and selected sentences The NMEA 0183 GPVTG data sentence gives ground speed and direction which may be required for some applications Changes can be made with the Garmin software or with a terminal emulator and the Garmin technical user manual Contact Garmin International www garmin com for either resource A 1 Computer Connections Either an A200 interface or SC110 cable is required to connect the GPS16X HVS to a comp2. Sample P70 6080 1 3 Reps 2 20 Loc Hours Set resolution to high for latitude and Longitude 19 Resolution P78 1 1 High Resolution B 7 Appendix B CR23X Wiring and Programming 20 Sample P70 A20303 1 4 Reps 2 2 Loc LatDegMin Write elevation in meters 21 Sample P70 A32246 1 1 Reps 2 10 Loc Elevation Set resolution low 22 Resolution P78 1 0 Low Resolution Write the number of satellites in view 23 Sample P70 A1910 1 1 Reps 2 7 Loc NumSats Reset the the GPS quality number 24 Z F x 10An P30 1 1 F 25 00 n Exponent of 10 3 6 Z Loc Quality 25 End P95 26 End P95 End Program B 3 Troubleshooting B 8 The first step is to verify the GPS16X outputs with a terminal program see Section 6 1 Testing and Evaluating Serial Communications p 13 The second step is to verify that it really does not work With the GPS16X HVS running and the datalogger program running look at the input location for GPS Quality Number This location will show a one when the GPSI6X HVS output is picked up by the datalogger The input location for parsed time and position are good locations to check The location for seconds should update every time the GPS data is updated If the GPS time and position data are not shown in the input locations check the communication cable wiring If the GPS16X HVS data is not correct every program table execution but
3. copy of time 5 Z X P31 1 1 X Loc Raw Time 2 18 Z Loc Orig TM Add 0 45 to time stamp to eliminate complications with floating point math P44 and P45 6 Z X F P34 1 18 X Loc Orig_TM 25 0 45 F 3 18 Z Loc Orig TM B 6 Appendix B CR23X Wiring and Programming Move minutes and seconds right of decimal 7 Z X F P37 1 18 X Loc Orig_TM 2 0001 F 3 19 Z Loc Intl Pluck off hours 8 Z INTOO P45 1 19 X Loc Inti 2 20 Z Loc Hours Subtract hours out 9 Z X Y P35 1 19 X Loc Int1 2 20 Y Loc Hours 3 19 Z Loc Intl Move decimal left 2 places 10 Z X F P37 1 19 X Loc Int1 2 100 F 3 19 Z Loc Inti Pluck off minutes 11 Z INT X P45 1 19 X Loc Inti 2 21 Z Loc Minutes Subtract out minutes 12 Z X Y P35 Jis 19 X Loc Inti 2 21 Y Loc Minutes 3 19 Z Loc Inti Move decimal left 2 places 13 Z X F P37 1 19 X Loc Int1 2 100 F 3 19 Z Loc Intl Pluck of seconds 14 Z INT X P45 1 19 X Loc Inti 2 22 Z Loc Seconds Write data to final storage every time there is a valid read of GPS data 15 Do P86 1 10 Set Output Flag High Flag 0 16 Set Active Storage Area P80 18796 I Y Final Storage Area 1 2 101 Array ID Write datalogger based time stamp 17 Real Time P77 27570 1 0011 Hour Minute Seconds midnight 0000 Write GPS based time stamp 18
4. in input locations Some time will have passed between the GPS fix and when the program table reaches the P114 instruction Adjustments can be made by adding a second or two Be careful about setting seconds to a number greater than 59 You can also correct the UTC time to local time Table based dataloggers require year day hour minute and seconds to use P114 Only hour minutes and seconds are available from the GPGGA string The PGRFM string includes the month day and year but is difficult to use B 2 5 Program Discussion Wiring when using Instruction 15 Function Color Datalogger Connection Power in Red 12 volts Power ground Black Ground Power switch Yellow ground TXD White C5 PPS Gray C8 Ground Blue R data for reconfig Shield Shield Ground Appendix B CR23X Wiring and Programming The GPS16X HVS needs to be reconfigured using the Garmin configuration software from the Garmin website for 1200 baud 8 data bits 1 stop bit and no parity see Appendix A Changing GPS16X HVS Settings p A The GPGGA string should be output The 1 pulse per second signal should be output with a pulse duration of 100 milliseconds The code required to read the GPS information and store it to final storage is in Subroutine 98 Subroutine 98 is interrupt driven and triggered when a rising edge is detected on Control port 8 The GPS16X HVS has a PPS signal which is wired to control port 8 The trans
5. supply from the USB connection to a 12 Vdc output that is required to power the sensor A 1 1 4 Determining which COM Port the A200 has been Assigned When the A200 is loaded the A200 is assigned a COM port number Often the assigned COM port will be the next port number that is free However if other devices have been installed in the past some of which may no longer be plugged in the A200 may be assigned a higher COM port number Often the assigned COM port will be the next port number that is free However if other devices have been installed in the past some of which may no longer be plugged in the A200 may be assigned a higher COM port number To check which COM port has been assigned to the A200 you can monitor the appearance of a new COM port in the list of COM ports offered in your software package e g LoggerNet before and after the installation or look in the Windows Device Manager list under the ports section access via the control panel A 1 2 Using the SC110 The SC110 consists of two cables each has a 2 foot 0 6 m length Use the cable that has a 9 pin female connector DCE TABLE A 2 shows wiring TABLE A 2 SC110 s DCE Cable Wiring Wire Color of Wire Color of Power SC110 s DCE Cable GPS16X HVS Supply Brown Blue N A White White N A Yellow Shield N A N A Red 12 V N A Black Ground N A Yellow Ground A 3 Appendix A Changing GPS16X HVS Settings Appendix B CR23X Wiring and Pro
6. velocity limited above 60 000 ft 6g dynamics Interfaces True RS 232 output asynchronous serial input compatible with RS 232 or TTL voltage levels RS 232 polarity Selectable baud rates 4800 9600 19200 38400 PPS 1 Hz pulse programmable width 1 microsecond accuracy Power Control Off Open circuit On Ground or pull to low logic level lt 0 3 volts Environmental Characteristics Temperature 30 to 80 C operational 40 to 80 C storage The GPS16X HVS connects directly to a CR6 CR800 CR850 CR1000 or CR3000 datalogger see TABLE 3 1 However if PPS is required the A300 Power and Signal Converter may be required for use with the CR800 850 CR1000 and CR3000 See Section 3 1 Using with an A300 qv 5 The CR6 does not require the use of an A300 Refer to Appendix B 1 CR23X Connections p B 1 if connecting the receiver to a CR23X Our CR5000 and CR9000X connect to the receiver via the SC110 and an SDM SIO4 see Appendix C Using an SDM SIO4 pp C 1 If the GPS16X HVS is to be connected to a computer to change the default settings an A200 or SC110 cable is needed see Appendix A Changing GPS16X HVS Settings p A 1 TABLE 3 1 Datalogger Wiring GPS16X HVS Datalogger Function Red 12V Power In Black Ground Power Ground Yellow baa er adu E Power Switch White Control Port Rx TXD Gray Control Port Tx PPS Ground or Control Port Blue Tx for datalogger based R data co
7. 00 CR850 CR1000 and CR3000 dataloggers It is used along with a GPS device to set the datalogger s clock This instruction will also provide information such as location latitude longitude and speed and store NMEA sentences from the GPS device To use the GPS instruction the datalogger operating system OS should be OS17 or higher for the CR1000 OS10 or higher for the CR3000 or OS08 or higher for the CR800 and CR850 Go to www campbellsci com downloads to upgrade the datalogger OS The resolution of accuracy for the clock set is 10 microseconds if the datalogger has a hardware revision number greater than 007 RevBoard field in the datalogger s Status table Otherwise resolution is 10 milliseconds The clock set relies on information from the GPRMC sentence If this sentence is not returned a clock set will not occur By default the instruction expects the GPS unit to be set up at 38400 baud outputting the GPRMC and GPGGA sentences once per second The datalogger expects the start of the second to coincide with the rising edge of the PPS signal If there is no PPS signal or if the required sentences come out at less than once per second the datalogger will not update its clock GPS units with lower baud rates can be used with the GPS instruction but the baud rate has to be set for the relevant Com port it is to be connected to either in the datalogger settings or by including a SetStatus command after the BeginProg instr
8. 16X HVS magnetic mount CM235 Magnetic mounting stand A200 Sensor to PC interface 2 Specifications Physical Size Weight Cable GPS16X HVS GPS Receiver 86 mm 3 39 in diameter 42 mm 1 65 in high 181 g 6 4 oz without cable 332 g 11 7 oz with 5 m cable PVC jacketed 5 m foil shielded 8 conductor 28 AWG Electrical Characteristics Input Voltage Current Drain GPS Receiver Sensitivity GPS Performance Receiver 8 0 Vdc to 40 Vdc unregulated 65 mA 12 Vdc 185 dbW minimum WAAS enabled 12 parallel channel GPS receiver continuously tracks and uses up to 12 satellites 11 if PPS is active Acquisition Times Approximate Reacquisition Hot Warm Cold SkySearch Sentence Rate Less than 2 s 1 s all data known 38 s initial position time and almanac known ephemeris unknown 45s 5 min no data known 1 s default NMEA 0183 output interval configurable from 1 to 900 s in one second increments Accuracy GPS Standard Positioning Service SPS Position Less than 15 m 95 typical 100 m with selective availability on Velocity 0 1 knot RMS steady state DGPS USCG RTCM Position 3 5 m 95 typical Velocity 0 1 knot RMS steady state DGPS WAAS Position Less than 3 m Velocity 0 1 knot RMS steady state PPS Time 1 microsecond at rising edge of PPS pulse subject to selective availability GPS16X HVS GPS Receiver 3 Wiring Dynamics 999 knots
9. 435 227 9000 USA You are responsible for conformance with governing codes and regulations including safety regulations and the integrity and location of structures or land to which towers tripods and any attachments are attached Installation sites should be evaluated and approved by a qualified engineer If questions or concerns arise regarding installation use or maintenance of tripods towers attachments or electrical connections consult with a licensed and qualified engineer or electrician General e Prior to performing site or installation work obtain required approvals and permits Comply with all governing structure height regulations such as those of the FAA in the USA e Use only qualified personnel for installation use and maintenance of tripods and towers and any attachments to tripods and towers The use of licensed and qualified contractors is highly recommended e Read all applicable instructions carefully and understand procedures thoroughly before beginning work e Wear a hardhat and eye protection and take other appropriate safety precautions while working on or around tripods and towers e Do not climb tripods or towers at any time and prohibit climbing by other persons Take reasonable precautions to secure tripod and tower sites from trespassers e Use only manufacturer recommended parts materials and tools Utility and Electrical e You can be killed or sustain serious bodily injury if the tripod tower o
10. ER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION USE OR MAINTENANCE OF TRIPODS TOWERS OR ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS CROSSARMS ENCLOSURES ANTENNAS ETC Table of Contents PDF viewers These page numbers refer to the printed version of this document Use the PDF reader bookmarks tab for links to specific sections T O HA 1 1 1 Default Settings conto eem eet i d 1 1 2 Compatible Dataloggers 2 1 3 Common ACCESSOTIES eene enne enne nren etre rennes 2 2 Specifications ce eror roo e eene ed AASA 3 Si ilr pee 4 3 1 Using with an A300 e etes 5 4 GPS DATA AA AA AA cece 6 4 1 GPGGA Sentence Position and Time 6 42 GPRMC Sentence Position and Time sess 7 5 CRBasic Programming 8 5 1 GPS Instructions tice ret een 8 52 Example Program Using GPS Instruction sssssssss 10 5 3 Example Program Using Serial Instruction 11 6 Troubleshooting AA 13 6 1 Testing and Evaluating Serial Communications s 13 6 2 NMEAStrings Variable Populated but Clock Not Setting 14 Appendices A Changing GPS16X HVS Settings A 1 A l Computer Connections A 1 AJ Using th A200 esae siens RAHAB A 1 A 1 1 1 Driver Installation seen A 1 AJ 2 Wiring eed eres A 2 A 1 1 3
11. GPS16X HVS GPS Receiver evision 9 1 Copyright 2003 2015 Campbell Scientific Inc IVANVIN NOLDOOULSNI Limited Warranty Products manufactured by CSI are warranted by CSI to be free from defects in materials and workmanship under normal use and service for twelve months from the date of shipment unless otherwise specified in the corresponding product manual Product manuals are available for review online at www campbellsci com Products not manufactured by CSI but that are resold by CSI are warranted only to the limits extended by the original manufacturer Batteries fine wire thermocouples desiccant and other consumables have no warranty CSI s obligation under this warranty is limited to repairing or replacing at CSI s option defective Products which shall be the sole and exclusive remedy under this warranty The Customer assumes all costs of removing reinstalling and shipping defective Products to CSI CSI will return such Products by surface carrier prepaid within the continental United States of America To all other locations CSI will return such Products best way CIP port of entry per Incoterms 2010 This warranty shall not apply to any Products which have been subjected to modification misuse neglect improper service accidents of nature or shipping damage This warranty is in lieu of all other warranties expressed or implied The warranty for installation services performed by CSI such as programmin
12. Powering the Sensor A 3 A 1 1 4 Determining which COM Port the A200 has been Assigned marenn a i ner dr eer GRUSS A 3 A12 Using the SCIIO iere ee eret herren A 3 B CR23X Wiring and Programming B 1 Bal CR23 X Connectiols inane ba P ba pO ders B 1 B2 Programming eerte oce e ee fist B 1 B 2 1 Program Execution Interval sssssseeeeee B 1 B 2 2 Reading GPS Data B 2 B 2 2 CR23X Example of Instruction 15 P15 B 3 Table of Contents B 2 3 FETS ARAL na BADA NAN ER dee He B 3 B 2 4 Managing the Data B 3 B 2 5 Program Discussion ccsccescceseeeseeesecseeeseeeseeeneeseeeeseeeeeeatens B 4 B 2 5 1 CR23X Example Program B 6 Bj3 Troubleshooting sse eec e tte eee ie dedecus B 8 C Using an SPDM SIQ dl reor recciernieee C 1 C SDM SIOA Connections C 1 C 2 CR9000X Example Program C 1 Figures 1 1 The GPS16X HVS terminates in pigtails for direct connection to Ig ARIA NAA 1 3 1 CRI1000 to GPSI6X HVS connection 5 A 1 A200 Sensor to PC Interface A 2 Tables Ish Default Settings inre Ee td a eee 1 3s Datalogger Witing ue ne eR OR read 4 5 GPS16X HVS Wiring to A300 Terminals and Datalogger Terminals toe crece Eee ERE deg 5 5 2 A300 Cable Wiring to Datalogger Terminals 6 4 1 NMEA SGPGGA String Definition 6 AT A200 Wire t td cos nete tides be detente te A 2 A 2 SC110 s DCE Cable W
13. Public RawGGAData ElevenGGAValues Alias RawGGAData 1 GGA_UTC_Time Alias RawGGAData 2 Latt_Int Units Latt_Int Deg Alias RawGGAData 3 Latt Frac Units Latt Frac Deg Alias RawGGAData 4 LattH NS Alias RawGGAData 5 Longit Int Units Longit Int Deg Alias RawGGAData 6 Longit Frac Units Longit Int Deg Alias RawGGAData 7 LongH EW Alias RawGGAData 8 GPSQuality Alias RawGGAData 9 Satellites Alias RawGGAData 10 HDOP Alias RawGGAData 11 Altitude Units Altitude Meters DataTable GPSData True 1 DataInterval 0 0 0 0 Sample ElevenGGAValues RawGGAData IEEE4 EndTable BeginProg Configure SDM Sio4 Port 2 for communications with GPS port SDMSI04 NotUsed OneRep Sio4AddressO Port2 Si04COMSetUpCmd Port2ComCode UnusedParameter NoValues UnityMultiplier NoOffset Delay 100 mSec Start GGA data filter on SDM Sio4 port SDMSI04 NotUsed OneRep Sio4AddressO Port2 StartRxFilter RxFilt9001 UnusedParameter NoValues Uni tyMultiplier NoOffset Delay 20 mSec Scan 50 mSec 0 0 Main Scan SDMS104 DataPo11 OneRep Sio4Address0 Port2 Pol 1ForData0001 UnusedParameter UnusedParameter OneV alue UnityMultiplier NoOffset If DataPoll 0 Then Delay 10 mSec SDMS104 RawGGAData C OneRep Sio4AddressO Port2 SendDataToLgr UnusedParameter UnusedParameter E1 evenGGAValues UnityMultiplier NoOffset Delay 10 mSec CallTable GPSData EndIf NextScan EndProg Campbell Scientific Companies Campbell S
14. Warm Start One satellite in use time from GPS Real Time Clock not GPS no position SGPGGA 183806 0 0 01 55555537 7D Valid GPS Fix Three satellites acquired time and position valid GPGGA 005322 0 4147 603 N 11150 978 W 1 03 11 9 00016 M 016 M 6E 4 2 GPRMC Sentence Position and Time Example signal not acquired SGPRMC 235947 000 V 0000 0000 N 00000 0000 E 041299 1D Example signal acquired SGPRMC 092204 999 A 4250 5589 S 14718 5084 E 0 00 89 68 211200 425 Field Example Comments Sentence ID SGPRMC UTC Time 092204 999 hhmmss sss Status A A Valid V Invalid Latitude 4250 5589 ddmm mmmm N S Indicator S N North S South Longitude 14718 5084 dddmm mmmm E W Indicator E E East W West Speed over ground 0 00 Knots Course over ground 0 00 Degrees UTC Date 211200 DDMMYY Magnetic variation Degrees Magnetic variation E East W West Checksum 25 Terminator CR LF GPS16X HVS GPS Receiver 5 CRBasic Programming This section describes programming a CR6 CR800 CR850 CR1000 or CR3000 See Appendix B CR23X Wiring and Programming p B 1 and Appendix C Using an SDM SIO4 pp c 1 for programming other dataloggers CRBasic is used to write programs for the CR6 CR1000 CR3000 CR800 and CR850 dataloggers These dataloggers use several instructions to read GPS output which is asynchronous serial data 5 1 GPS Instruction NOTE The GPS instruction is available for our CR6 CR8
15. all the input locations needed In Edlog open the input location editor F5 and enter names for the input locations listed above When an input location is needed use the input location pick list F6 B 5 Appendix B CR23X Wiring and Programming B 2 5 1 CR23X Example Program CR23X Table 1 Program 01 60 Execution Interval seconds Instruction to eliminate warning about unused subroutine not needed 1 If Flag Port P91 1 11 Do if Flag 1 is High 2 98 Call Subroutine 98 Table 2 Program 02 0 0000 Execution Interval seconds Table 3 Subroutines 1 Beginning of Subroutine P85 1 98 Subroutine 98 read serial data non buffered 2 Port Serial I O P15 1 1 Reps 2 66 RS 232 ASCII decimal delimiter 38400 Baud 3 1 Delay 0 01 sec units before TX 4 5 No RTS DTR C5 TXD RXD 5 1 Start Loc for TX Raw Time 6 0 Number of Locs to TX Zi 42 Termination Character for RX 8 100 RX Buffer Size or Max Chars to RX if Par 2 indexed 9 80 Time Out for CTS TX and or RX 0 01 sec units 10 1 Start Loc for RX Raw Time 11 1 0 Mult for RX 12 0 0 Offset for RX filter for GPGGA 3 Extended Parameters P63 1 36 Option 2 71 Option G 3 80 Option P 4 71 Option G 5 71 Option G 6 65 Option A 7 0 Option 8 0 Option Test for valid GPS fix and string read 4 If X lt gt F P89 1 6 X Loc Quality 23 3 gt 3 1 F 4 30 Then Do Make a
16. an be the same as used to communicate with the datalogger Terminal emulation software is common Hyperterm is supplied as part of Windows and works Procomm is another communication software package that works well 13 GPS16X HVS GPS Receiver Set up the software for the correct serial port 38 4 kbps 8 data bits 1 stop bit and no parity Flow control should be none Using the SC110 cable connect the GPS16X HVS to the computer serial port Power up the GPS16X HVS The GPS antenna should have a clear view of the sky Don t expect the GPS antenna to work indoors The GPGGA and GPRMC strings should be displayed once a second Make sure the GPGGA string is showing a valid GPS fix A valid GPS fix will display time position and have a GPS quality number greater than zero SC110 Cable Connections GPS16X Receiver SC110 Sockets or DB9 Sockets to Pigtails White Pin 2 Black and Yellow Pin 5 shares power ground 6 2 NMEAStrings Variable Populated but Clock Not Setting 14 Look at the GPSReady variable It will increment from 0 to 10 when the datalogger has received good GPRMC strings and a synchronized PPS signal Once GPSReady reaches 10 the datalogger will begin to use GPS time for clock setting The 12th value populated in GPSArray indicates elapsed time since a GPRMC string was received and should not exceed 1 If the GPRMC string is being received and GPSReady remains at zero the PPS signal is not
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18. correct sometimes check the P15 time out It may need a longer time out Also check the P15 maximum number of characters to receive usually 100 is enough Check the P15 termination character it should be set to 42 The termination character should also work if set to 13 or 10 Also check the buffering and filter Buffering should be turned off by indexing parameter 2 For P15 to properly read the GPGGA string P15 must be executing while the GPGGA string starts and finishes The P15 time out needs to be long enough to pick up the string The string is output once a second If P15 starts to execute while the GPS16X HVS is sending the string P15 must wait until the string is sent again plus the amount of time it takes to send the string It shouldn t need more than 1 5 seconds P15 time out is in units of 0 01 seconds 100 1 second A longer time out will force the datalogger to wait until the time out has expired or the termination character is received or the Appendix B CR23X Wiring and Programming maximum number of characters are received If the data in input locations seem to move from the proper input location to another input location P15 is stopping before the entire string has been read An example is latitude being displayed in the time field then in the latitude field P15 works best when P15 quits reading data because the termination character has been read Using the PPS to trigger subroutine 98 is the best way to start P15 j
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20. ecution interval does not matter Otherwise the timing between the GPS16X HVS output and the datalogger read must be considered Generally the execution interval can not be less than 2 seconds when the PPS signal is not used B 1 Appendix B CR23X Wiring and Programming B 2 2 Reading GPS Data TABLE B 2 is a sample CR23X P15 instruction for reading NMEA GPGGA data string The second parameter has two dashes indicating data buffering has been turned off The CR10X does not have the data buffering option TABLE B 2 P15 for NMEA GPGGA Data String Configuration code for RS232 ASCII data at 38400 baud 2 with data buffering turned off The indicates data buffering turned off Decimal delimiter Delay before sending data out Control ports Two digit format AB A is for 4 05 handshaking and set to zero B in this example is control port 5 datalogger RCV GPS16X HVS communication cable GPS transmit to control port 5 in this example 5 1 Input location where first character to transmit is stored Note nothing is actually transmitted Number of consecutive input locations to send Termination character 42 is ASCII equivalent of the asterisk Maximum Maximum number of characters to receive of characters to receive MTS Ic MERE 5 eo Deuy in mS How og vai fr saraga ng Ce sarin ination far time and potion a n o pwewmamei 0 O Ce o foraine SCS P15 parameters 4 5 and 10 are somewhat variable When using a CR23X
21. g Public rmcstatus As String Public rmclatitude As String Public rmcin s ind As String Public rmclongitude As String Public rmce w indicator As String Public rmcspeed As String Public rmccourse As String Public rmcutcdate As String Public rmcmagvariation As String Public rmcmage w As String Public rmcchecksum As String gga variables Public ggaid As String Public ggautc As String Public ggailatitude As String Public ggan s ind As String Public ggalongitude As String Public ggae w ind As String Public ggapositionfix As String Public gganumsatellites As String Public ggahdop As String Public ggaaltitude As String Public ggaaltutudeunits As String Public ggageoidsep As String Public ggageoidunits As String Public ggachecksum As String Dim NBytesReturned As Long Dim SubStrings 16 As String 32 rawdata As String 500 Dim CalculatedChecksum As Long ReportedChecksum As Long 11 GPS16X HVS GPS Receiver 12 DataTable gpsdata True 1 DataInterval 0 1 Sec 10 Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample EndTable 1 rmcid String 1 rmcutc String 1 rmcstatus String 1 rmclatitude String 1 rmcin_s_ind String 1 rmclongitude String 1 rmcspeed String 1 rmccourse String 1 rmcutcdate String 1 rmcmagvariation Stri
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23. gramming B 1 CR23X Connections Reconfigure the receiver for 1200 baud using Garmin configuration software available on Garmin s website Refer to TABLE B 1 to connect the GPS16X HVS directly to a CR23X datalogger TABLE B 1 CR23X Wiring GPS16X HVS CR23X Function Red 12V Power In Black Ground Power Ground Yellow Ground Power Switch White Control Port TXD Gray Control Port PPS Ground in operation Blue Send data to receiver for R data configuration Shield Ground Shield B 2 Programming Program instruction 15 P15 is used to read the NMEA GPGGA string of time and position data Each iteration of P15 can either read the numeric fields or read everything When reading the numeric fields such as time latitude longitude and elevation P15 requires non numeric delimiters between data points The only available format of GPS data with delimiters is the NMEA 0183 format Program instruction 15 P15 reads serial data and discards non numeric values All non numeric values act as delimiters between numbers and decimal points can also act as delimiters P15 can be used to import everything in the string character by character and convert it to the decimal equivalent The decimal equivalent method is seldom used and only when the general area hemisphere is not known B 2 1 Program Execution Interval When the PPS signal is used to trigger the read data function P15 the program table ex
24. ias gps data 12 dt since gprmc Time since last GPRMC string normally less than 1 second Alias gps data 13 gps ready Counts from 0 to 10 10 ready Alias gps_data 14 max_clock_change Maximum value the clock was changed in msec Alias gps_data 15 nmbr_clock_change Number of times the clock was changed Define Units to be used in data file header Units latitude_a degrees Units latitude_b minutes Units longitude_a degrees Units longitude_b minutes Units speed knots Units course degrees Units magnetic_variation unitless Units fix_quality unitless Units nmbr_satellites unitless Units altitude m Units pps ms Units dt_since_gprmc s Units gps_ready unitless 10 GPS16X HVS GPS Receiver Units max_clock_change ms Units nmbr_clock_change samples BeginProg Use SetStatus prior to scan if baud rate needs to be changed for device Scan 1 Sec 0 0 GPS latitude a Com4 LOCAL TIME OFFSET 3600 100 nmea sentence 1 NextScan EndProg 5 3 Example Program Using Serial Instruction Serial programming allows the retrieval of all values of GPRMC and GPGGA values The GPSQ instruction is a subset of the values that are available GPS16X HVS at Campbell Scientific Factory Defaults Const GPSPort Com4 Com port where GPS is connected Public GGAstring As String 500 Public RMCstring As String 500 rmc variables Public rmcid As String Public rmcutc As Strin
25. iring A 3 Bele RIX Winne sis KANG URINE DER RETE MERCIER EET B 1 B 2 P15 for NMEA GPGGA Data String sse B 2 Aa Res oue ania Mate Se natn acti B 3 C 1 SCI10 s Cable Wiring esee eee ert C 1 GPS16X HVS GPS Receiver 1 Overview FIGURE 1 1 The GPS16X HVS terminates in pigtails for direct connection to our dataloggers The GPS16X HVS is a complete GPS receiver manufactured by Garmin International Inc Campbell Scientific configures the GPS16X HVS to work with our dataloggers and modifies its cable so that the cable terminates in pigtails The pigtails connect directly to the control ports of our dataloggers or with the aid of an A300 The GPS16X HVS includes the GPS receiver and antenna in the same housing with one cable for the power supply and communications The GPS antenna must have a clear view of the sky Generally the GPS antenna will not work indoors The GPS16X HVS is a 12 channel GPS receiver that supports FAA Wide Area Augmentation System WAAS or RTCM differential GPS Also supported is the 1 Pulse Per Second PPS timing signal The cable connections provided with the GPS16X HVS do not support differential GPS correction The cable can be modified by the user if differential correction is required 1 1 Default Settings TABLE 1 1 shows the default settings of the GPSX16 HVS TABLE 1 1 Default Settings Baud Rate 38400 bps Parity N n
26. k Power Ground C 2 CR9000X Example Program NMEAGGA Sio4 030805MGW1 CRI This program acquires NMEA GGA data from a GPS receiver using the SDM SI04 Notes G Data is acquired from NMEA0183 SGPGGA string Sio4Fields f1 Const OneRep 1 Const NoValues 0 Const OneValue 1 GGAFields GGA Field1 GGA Field2 GGA Field3 GGA Field4 GGA Field5 GGA Field6 GGA Field7 GGA Field8 GGA Field9 GGA Field10 GGA Field11 GGA Field12 GGA Field13 GGA Field14 2 SIO4 programming fltst 1 t GPGGA xFt Dt Dt b1t Dt Dt b1t Ft Ft Ft FX Const ElevenGGAValues 11 Const UnityMultiplier 1 0 Const NoOffset 0 0 Const Sio4Address0 0 Const Port2 2 Definitions GGA UTC Time of position Latitude North or South indication letter Longitude East or West indication letter GPS quality 0 NoGPS 1 GPS 2DGPS Number of satellites in use HDOP Horizontal Dilution Of Precision Antenna altitude in Meters Geoidal separation in Meters Age of differential GPS data Differential reference station Appendix C Using an SDM SIO4 SDM Sio4 command codes Const UnusedParameter Const PollForData0001 Const SendDataToLgr Const Sio4COMSetUpCmd Const StartRxFilter Const Port2ComCode Const RxFilt9001 Dim DataPoll NotUsed 0000 0001 0004 2049 2054 9147 9 NoHandshaking 1 1StopBitNoParity 4 8DataBits 7 19200Baud 9001 Command parameter for user defined fltst 1
27. ls GPGGA Sentence Position and Time Sample NMEA GPGGA data string GPGGA hhmmss III 1 a nnnnn nnn b t uu v v w w M x x M y y zzzz hh lt CR gt lt LF gt TABLE 4 1 NMEA GPGGA String Definition Field Description 0 SGPGGA NMEA string identifier 1 hhmmss UTC of Position Hours minutes seconds 2 1111 111 Latitude Degrees minutes thousandths of minutes 3 a N North or S South 4 nnnnn nnn Longitude Degrees minutes thousandths of minutes 5 b E East or W West 6 t GPS Quality Indicator 0 No GPS 1 GPS 2 DGPS 7 uu Number of Satellites in Use 8 V V Horizontal Dilution of Precision HDOP 9 W W Antenna Altitude in Meters 10 M M Meters 11 X X Geoidal Separation in Meters M Meters Geoidal separation is the difference 12 M between the WGS 84 earth ellipsoid and mean sea level 13 yy Age of Differential GPS Data Time in seconds since the last Type 1 or 9 Update 14 ZZZZ Differential Reference Station ID 0000 to 1023 15 Asterisk generally used as the termination character 16 hh Checksum 17 lt CR gt lt LF gt Carriage return line feed characters GPS16X HVS GPS Receiver Sample GPGGA output strings Cold Start No satellites acquired Real Time Clock and Almanac invalid SGPGGA 0 00 06 Warm Start No satellites acquired time from Real Time Clock almanac valid SGPGGA 235032 0 0 00 555 7 7D
28. milliseconds 10 msec resolution Array 15 Clock change count The ComPort parameter is the control port pair to which the GPS device is attached Valid options are COMI C1 C2 COM2 C3 C4 COM3 C5 C6 and COM4 C7 C8 Rx is used to read in the NMEA sentences and Tx is used to monitor the PPS from the GPS This instruction defaults to a baud rate of 38 400 bps Ifa different baud rate is required use the SetStatus instruction to override the default The TimeOffset parameter is the local time offset in seconds from UTC The MaxTimeDiff parameter is the maximum difference in time between the datalogger clock and the GPS clock that will be tolerated before the clock is changed If a negative value is entered the clock will not be changed For dataloggers prior to hardware revision 08 the MaxTimeDiff parameter should not be set to 0 A minimum value of 20 ms is recommended With this hardware when a GPS instruction is in the program the clock is checked each second regardless of how often the GPSQ instruction is run The clock is set if any difference is found This can result in the clock being set each second resulting in skipped records in the data table s This restriction does not apply to hardware revisions 08 or greater GPS16X HVS GPS Receiver NMEAStrings The NMEAStrings parameter is the string array that holds the NMEA sentences If it exists the GPRMC sentence will reside in NMEAStrings 1 and the GPGGA se
29. mit data line of serial port 1 on the GPS16X HVS is wired to control port 5 The GPS16X HVS serial port 2 generally is not used When the 1 PPS signal triggers subroutine 98 P15 is executed P15 is setup to read ASCII serial data Each data point is separated by a non numeric character or a decimal point Fifteen input locations are used as temporary storage for the SGPGGA string TABLE 4 1 explains the SGPGGA string The input locations used for the SGPGGA string are 1 Raw_ Time Time in hours minutes and seconds 2 LatDegMin Latitude degrees and minutes 3 Lat_Frac Latitude fractions of minute 4 LngDegMin Longitude degrees and minutes 5 Lng Frac Longitude fractions of minute 6 Quality GPS quality indicator 7 NumSats Number of satellites in use 8 HDPWhole Horizontal Dilution of Precision 9 HDPFrac Horizontal Dilution of Precision tenths 10 Elevation Elevation in meters 11 Geoidal Geoidal separation in meters 12 Geoidalth Geoidal separation in meters tenths 13 Age Age of differential GPS data 14 Agetenth Age of differential GPS data tenths 15 DifflD Differential reference station ID Additional input locations used in the example program are 18 Orig TM Copy of original time 19 Intl Place holder for math 20 Hours formatted hours 21 Minutes formatted minutes 22 Seconds formatted seconds 23 remainder place holder for math Before writing any datalogger code it s best to enter
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31. n P63 TABLE B 3 Filter ASCII Equivalent Character 36 71 80 71 71 65 gt OQlQll oO B 2 4 Managing the Data Several of the data values in the GPGGA string are too large to view or write to final storage Some simple math is used to parse the data The UTC time is in the format hhmmss where hh is the hours mm is the minutes and ss is the seconds Six digits are too many to view with the datalogger display and some software Add 0 3 to the raw time field Multiply the raw time input location by 0 01 to reduce the magnitude and place the seconds in the fractional portion of the number Next use P45 to write the integer portion hours minutes to a new input location then use P44 to write the fractional portion to another input location seconds and multiply that B 3 Appendix B CR23X Wiring and Programming location by 100 The last step is to use P45 again to take the integer portion of the input location for seconds The result is hour minutes in one input location and seconds in another The latitude and longitude can be parsed with the P15 instruction when decimal delimiter is on If P15 parameter 2 is 6x where the x selects the baud rate every non numeric value and decimal point will act as a delimiter The Degrees and Minutes will be placed in one input location and the minute fractional portion will be placed in the next input location The decimal delimiter preserves the res
32. nfiguration Shield Ground Shield GPS16X HVS GPS Receiver FIGURE 3 1 CR1000 to GPS16X HVS connection 3 1 Using with an A300 In 2014 Garmin changed the pulse per second PPS output of the GPS16X HVS from 5 V to 3 V Units with a serial number 1A4189318 or greater have a PPS output of 0 to 3 V For those units an A300 is needed to connect the PPS output to a CR800 series CR1000 or CR3000 datalogger Those dataloggers require the PPS line to have a voltage of 3 8 V or greater TABLE 3 2 GPS16X HVS Wiring to A300 Terminals and Datalogger Terminals GPS16X HVS GPS16X HVS A300 Wire Color Wire Function Terminal Datalogger Red 12V 12V Black Ground G Yellow Enable Sonal White TXD Output Control Port Rx Gray PPS 3 3V IN Blue RXD Input Ground Shield Shield Ground GPS16X HVS GPS Receiver TABLE 3 3 A300 Cable Wiring to Datalogger Terminals A300 Wire Color A300 Wire Function Datalogger Red 12V 12V Black Ground Ground Green 5 V Signal Input Ground White 5 V Signal Output Control Port Tx 4 GPS Data The GPS16X HVS has several data formats available The GPSI6X HVS is configured to output the NMEA GPGGA and GPRMC time and position string It is possible to configure the GPS16X HVS to output other NMEA strings including the GPVTG track made good and ground speed string See Appendix A Changing GPS16X HVS Settings p A 1 for detai
33. ng 1 rmcmage_w String 1 rmcchecksum String 1 ggaid String 1 ggautc String 1 ggan_s_ind String 1 ggalongitude String 1 ggae_w_ind String 1 ggapositionfix String 1 gganumsatellites String 1 ggahdop String 1 ggaaltitude String 1 ggaaltutudeunits String 1 ggageoidsep String 1 ggageoidunits String 1 ggachecksum String Main Program BeginProg SerialOpen GPSPort 38400 3 0 1001 Scan 1 Sec 0 0 SerialInRecord GPSPort rawdata 36 0 amp h0D0A NBytesReturned 11 CalculatedChecksum CheckSum rawdata 9 Len rawdata 3 CalculatedChecksum CalculatedChecksum AND 255 ReportedChecksum HexToDec Right rawdata 2 If CalculatedChecksum ReportedChecksum Then If InStr 1 rawdata GPRMC 2 Then RMCstring rawdata ElseIf InStr 1 rawdata GPGGA 2 Then GGAstring rawdata EndIf EndIf SerialInRecord GPSPort rawdata 36 0 amp h0D0A NBytesReturned 11 CalculatedChecksum CheckSum rawdata 9 Len rawdata 3 CalculatedChecksum CalculatedChecksum AND 255 ReportedChecksum HexToDec Right rawdata 2 If CalculatedChecksum ReportedChecksum Then If Instr 1 rawdata GPRMC 2 Then RMCstring rawdata ElseIf InStr 1 rawdata GPGGA 2 Then GGAstring rawdata EndIf EndIf GPS16X HVS GPS Receiver parse rmc data SplitStr Substrings RMCstring 16 5 rmcid SubStrings 1 rmcutc SubStrings 2 rmcstatus SubStrings 3 rmclatitude S
34. ntence will reside in NMEAStrings 2 Any other sentences will reside in subsequent indexes into the array on a first in basis Once an index in the array is used to store a particular sentence that sentence will always be stored in that location when updates to the sentence are received 5 2 Example Program Using GPS Instruction The following wiring and short program provide an example of using the GPS instruction with the Garmin GPS16X HVS Program the GPS16 HVS to use 38 4 kbaud no parity 8 data bits and 1 stop bit PipeLineMode Const LOCAL_TIME_OFFSET 6 Local time offset relative to UTC time Dim nmea_sentence 2 As String 90 Public gps_data 15 Alias gps_data 1 latitude_a Degrees latitude North South Alias gps_data 2 latitude_b Minutes latitude Alias gps_data 3 longitude_a Degress longitude East West Alias gps_data 4 longitude_b Minutes longitude Alias gps_data 5 speed Speed Alias gps_data 6 course Course over ground Alias gps_data 7 magnetic_variation Magnetic variation from true north East West Alias gps_data 8 fix_quality GPS fix quality O invalid 1 GPS 2 differential GPS 6 estimated Alias gps data 9 nmbr_satellites Number of satellites used for fix Alias gps_data 10 altitude Antenna altitude Alias gps_data 11 pps usec into sec of system clock when PPS rising edge occurs typically 990 000 once synced Al
35. o parity Stop Bit 1 Sentences Output GPGGA GPRMC PPS 100 ms GPS16X HVS GPS Receiver 1 2 Compatible Dataloggers Compatible Contemporary Dataloggers CR200 X CR800 Series CR850 CR1000 CR3000 CR6 CR9000X See ka ka Appendix B and C Compatible Retired Dataloggers If PPS is required the A300 Power and Signal Converter is needed CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X See See See Appendix Appendix Appendix B and C B and C B and C Our CR6 CR800 CR850 CR1000 and CR3000 dataloggers typically use the CRBasic GPS instruction to read the GPS16X HVS To use the PPS functionality some dataloggers need an updated clock chip The clock chip is factory replaced requires an RMA Dataloggers with the following serial numbers need an updated chip Datalogger Serial Number CR1000M lt 20409 CR800 CR850 lt 7920 CR3000 lt 3168 In August 2014 Garmin changed the GPS16X HVS PPS output signal from 5 V to 3 V Units with serial numbers greater than 144189318 have a 3 V PPS output signal When this new design is used with a CR800 CR850 CR1000 or CR3000 datalogger a 3 V to 5 V voltage shifter is required for use with the PPS signal output The A300 can be used for this purpose This level shifter is NOT required for the CR6 datalogger 1 3 Common Accessories CSI part number Description 17212 GPS
36. olution of the original measurement Further parsing of the latitude and longitude may be necessary Longitude degrees and minutes can range in value up to 18059 which exceeds the low resolution format of the dataloggers final storage area Either parse the latitude and longitude degrees and minutes the same way the time was parsed or store the data in high resolution format The GPS quality number can be used to determine if you have a valid GPS fix and if the datalogger received the data properly Use P89 to test if the GPS quality number is greater than or equal to one There is a catch to using the GPS quality number to verify your data P15 will write to fifteen input locations if everything works correctly If P15 fails to read the GPS data only the first input location is written to The GPS quality number will be unchanged If P15 fails to read the GPS data the value displayed in the first input location will be 99999 The datalogger actually stores FFFFFFFFh a very large number The time field includes six digits which can be greater than 99999 This limits the usefulness of the time field as a test for a valid GPS fix A better approach is to overwrite the GPS quality location with zero before executing P15 Use P30 to overwrite one input location If the GPS time is used to set the datalogger clock the GPS time must be parsed into three input locations Hour Minutes Seconds P114 is used to set the datalogger clock to match values
37. parameter 4 can be set to 05 06 or 07 depending on what control ports are used Wiring of the communication cable depends on the selection for parameter 4 With a CR23X the GPS transmit wire is connected to the control port selected in parameter 4 P15 is executed when the PPS signal drives control port 8 high P15 will wait until one of three conditions is met the time out listed in parameter 9 has expired the maximum number of characters in parameter 8 have been read or the termination character listed in parameter 7 has been read P15 parameter 10 is the first input location you wish to store GPS data in Fifteen sequential input locations will be used to store time and position Appendix B CR23X Wiring and Programming B 2 2 1 CR23X Example of Instruction 15 P15 Port Serial I O P15 Reps RS 232 ASCII decimal delimiter 38400 Baud Delay units 0 01 sec Control Ports Output Loc Bulk B 2 3 NOTE Filters No of Locs to Send Termination Character Maximum Characters Time Out Delay units 0 01 sec Loc Raw timel Mult Offset Communication cable wiring for CR23X Example B 2 2 1 PPS to C8 GPS transmit to C5 Filters can be used to make sure P15 reads the correct data string Filters also ensure P15 starts to read the string at the beginning of the string To use a filter follow P15 with instruction P63 extended parameters P63 is used to define the filter Enter the desired filter i
38. r attachments you are installing constructing using or maintaining or a tool stake or anchor come in contact with overhead or underground utility lines e Maintain a distance of at least one and one half times structure height 20 feet or the distance required by applicable law whichever is greater between overhead utility lines and the structure tripod tower attachments or tools e Prior to performing site or installation work inform all utility companies and have all underground utilities marked e Comply with all electrical codes Electrical equipment and related grounding devices should be installed by a licensed and qualified electrician Elevated Work and Weather e Exercise extreme caution when performing elevated work e Use appropriate equipment and safety practices e During installation and maintenance keep tower and tripod sites clear of un trained or non essential personnel Take precautions to prevent elevated tools and objects from dropping e Do not perform any work in inclement weather including wind rain snow lightning etc Maintenance e Periodically at least yearly check for wear and damage including corrosion stress cracks frayed cables loose cable clamps cable tightness etc and take necessary corrective actions e Periodically at least yearly check electrical ground connections WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS THE CUSTOM
39. ubStrings 4 rmcin_s_ind SubStrings 5 rmclongitude SubStrings 6 rmce_w_indicator SubStrings 7 rmcspeed SubStrings 8 rmccourse SubStrings 9 rmcutcdate SubStrings 10 rmcmagvariation SubStrings 11 rmcmage_w Left SubStrings 12 1 rmcchecksum Ri ght RMCstring 2 parse gga data SplitStr SubStringsO GGAstring 16 5 ggaid SubStrings 1 ggautc SubStrings 2 ggailatitude SubStrings 3 ggan s ind SubStrings 4 ggalongitude SubStrings 5 ggae_w_ind SubStrings 6 ggapositionfix SubStrings 7 gganumsatellites SubStrings 8 ggahdop SubStrings 9 ggaaltitude SubStrings 10 ggaaltutudeunits SubStrings 11 ggageoidsep SubStrings 12 ggageoidunits Left SubStrings 13 1 ggachecksum Ri ght GGAstring 2 CallTable gpsdata NextScan EndProg 6 Troubleshooting Testing and evaluation of serial communications is best done by reducing the whole system to small manageable systems Usually some portions of the whole system are working The first steps involve finding what is working During this process you may find parts of the system that are not working or mistakes that can be easily corrected Fix each subsystem before testing others 6 1 Testing and Evaluating Serial Communications Test the GPS16X HVS for proper operation including the baud rate and output string Use a computer terminal emulator software a serial port RS 232 and a 9 pin to pigtail cable SC110 sockets The computer and serial port c
40. uction in the program e g SetStatus BaudrateCOM4 19200 Baud rates of 2400 bps or lower will not work as the GPS unit will not transmit the two GPS sentences once per second reliably Similar problems can be encountered even at higher baud rates if too many optional GPS strings are selected to be output The GPS instruction has the following syntax GPS GPSArray ComPort TimeOffset Max TimeDiff NMEAStrings GPS16X HVS GPS Receiver Description of the parameters follows GPSArray ComPort TimeOffset MaxTimeDiff The GPSArray parameter is the variable in which to store the information returned by the GPS Fifteen values are returned If this array is not dimensioned to 15 values will be stored to fill the array and no error will be returned If no values are available NAN will be returned The following values are returned by the GPS Array 1 Latitude degrees Array 2 Latitude minutes Array 3 Longitude degrees Array 4 Longitude minutes Array 5 Speed over ground knots Array 6 Course over ground degrees Array 7 Magnetic variation positive East negative West Array 8 Fix Quality 0 invalid 1 GPS 2 differential GPS 6 estimated Array 9 Number of Satellites Array 10 Altitude meters Array 11 Pulse per second PPS length microseconds Array 12 Seconds since last GPRMC sentence Array 13 GPS Ready 10 ready Array 14 Maximum clock change
41. ust before the GPS16X HVS sends the GPGGA string If the PPS signal pulls C8 high while the datalogger is in the middle of executing an instruction it may not be able to run subroutine 98 before the SGPGGA string has started which will cause the datalogger to miss the data string Turning on the data buffering may remedy the problem Lengthening the serial time out to allow P15 to execute for 2 cycles of NMEA output may help Otherwise the SDM SIO4 may be required or the datalogger program will need to be simplified The datalogger will not pick up valid data until the GPS16X HVS has a valid GPS fix except during a GPS16X HVS warm start where time can be read before position is known Don t spend a lot of time trouble shooting a phantom problem just because the GPS receiver does not have a valid GPS fix Appendix B CR23X Wiring and Programming B 10 Appendix C Using an SDM SIO4 C 1 SDM SIO4 Connections An SDM SIOA should be used if measuring the GPS16X HVS with a CR5000 or CR9000X datalogger An SC110 cable is required to connect the GPS16X HVS to an SDM SIO4 The SC110 consists of two cables Use the cable that terminates in a 9 pin male connector DTE The stripped and tinned leads of that cable attach to the GPSIGX HVS see TABLE C 1 TABLE C 1 SC110 s Cable Wiring Wire Color of Wire Color of SC110 s Cable GPS16X HVS Power Supply Brown Gray N A White White N A Yellow Shield N A N A Red 12 V N A Blac
42. uter The A200 is used to connect to a computer USB port and the SC110 is used to connect to a computer 9 pin serial port A 1 1 Using the A200 A 1 1 1 Driver Installation If the A200 has not been previously plugged into your PC and your PC operating system is not Windows 7 the A200 driver needs to be loaded onto your PC A 1 Appendix A Changing GPS16X HVS Settings NOTE A 1 1 2 Wiring Drivers should be loaded before plugging the A200 into the PC The A200 drivers can be downloaded at no charge from www campbellsci com downloads One end of the A200 has a terminal block while the other end has a type B female USB port The terminal block provides 12V G TX and RX terminals for connecting the GPS16X HVS see FIGURE A 1 and TABLE A 1 A data cable CSI part number 17648 ships with the A200 This cable has a USB type A male connector that attaches to a PC s USB port and a type B male connector that attaches to the A200 s USB port TABLE A 1 A200 Wiring Sensor A200 Color Cable Label Terminal Red 12V 12Vdc Black G G Yellow G G White Rx Rx Gray Tx Tx Blue sig ground G Shield sig ground G MPBELL 5 SCIENTIFIC FIGURE A 1 A200 Sensor to PC Interface Appendix A Changing GPS16X HVS Settings A 1 1 3 Powering the Sensor The A200 provides power to the GPS16X HVS when it is connected to a PC s USB port An internal DC DC converter boosts the 5 Vdc
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