Campbell GPS16X-HVS User manual

GPS16X-HVS
GPS Receiver
Revision
: 05/2020
Copyright ©
2003 – 2020
Campbell Scientif
ic, Inc.

i
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.
1. Overview .................................................................... 1
1.1 Default Settings....................................................................................1
1.2 Compatible Data Loggers.....................................................................2
1.3 Common Accessories...........................................................................2
2. Precautions................................................................ 2
3. Initial Inspection ........................................................ 3
4. QuickStart .................................................................. 3
5. Specifications ............................................................ 5
6. Installation ................................................................. 6
6.1 Wiring ..................................................................................................6
6.1.1 Using with an A300 ......................................................................8
6.2 Mounting..............................................................................................9
7. GPS Data .................................................................... 9
7.1 $GPGGA Sentence (Position and Time)............................................10
7.2 $GPRMC Sentence (Position and Time)............................................11
8. CRBasic Programming............................................ 11
8.1 GPS() Instruction ...............................................................................11
8.2 Example Program Using GPS() Instruction .......................................13
9. Troubleshooting ...................................................... 14
9.1 Testing and Evaluating Serial Communications ................................15
9.1.1 Through a Direct Connection to the GPS16X-HVS ...................15
9.1.2 Through a Data Logger Connected to the GPS16X-HVS...........15
9.2 NMEAStrings Variable Populated, but Clock Not Setting ................16
Appendices
A. Changing GPS16X-HVS Settings.......................... A-1
A.1 Computer Connections.................................................................... A-1
A.1.1 Using the A200 ........................................................................ A-1
A.1.1.1 Driver Installation.......................................................... A-1
A.1.1.2 Wiring............................................................................ A-2
A.1.1.3 Powering the Sensor...................................................... A-3

Table of Contents
ii
A.1.1.4 Determining which COM Port the A200 has been
Assigned .................................................................... A-3
A.1.2 Using the DB9-Female-to-Terminal-Block Interface .............. A-3
B. Serial Programming............................................... B-1
Figures
1-1. The GPS16X-HVS terminates in pigtails for direct connection to
our data loggers.................................................................................1
6-1. CR1000 to GPS16X-HVS connection .................................................7
6-2. GPS16X-HVS mounted using a CM235 Magnetic Mounting Stand ...9
A-1. A200 Sensor-to-PC Interface .......................................................... A-2
Tables
1-1. Default Settings....................................................................................1
6-1. Data Logger Wiring .............................................................................7
6-2. CR9000X Wiring .................................................................................8
6-3. GPS16X-HVS Wiring to A300 Terminals and Data Logger
Terminals ..........................................................................................8
6-4. A300 Cable Wiring to Data Logger Terminals....................................9
7-1. NMEA $GPGGA String Definition ...................................................10
A-1. A200 Wiring.................................................................................... A-2
A-2. DB9-Female-to-Terminal-Block Interface Wiring.......................... A-3
CRBasic Examples
8-1. Reading the GPS Using the GPS() Instruction...................................14
B-1. Reading the GPS Using Serial Programming...................................B-1

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GPS16X-HVS GPS Receiver
1. Overview
FIGURE 1-1. The GPS16X-HVS terminates in pigtails for direct
connection to our data loggers
The GPS16X-HVS is a complete GPS receiver manufactured by Garmin
International, Inc. Campbell Scientific configures the GPS16X-HVS to work
with our data loggers and modifies its cable so that the cable terminates in
pigtails. The pigtails connect directly to the control terminals of our data
loggers 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 (no parity)
Stop Bit 1
Sentences Output GPGGA, GPRMC
PPS 100 ms

GPS16X-HVS GPS Receiver
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1.2 Compatible Data Loggers
Compatible Contemporary Data Loggers
CR300
Series
CR800
Series CR6 Series CR1000X CR1000 CR3000 CR9000X
* * * **
*If PPS is required, the A300 Power and Signal Converter is needed.
**CPU Card RS-232 port only.
This manual provides information only for CRBasic data loggers.
For retired Edlog data logger support, see an older manual at
www.campbellsci.com/old-manuals.
Except for the CR9000(X), our data loggers use the CRBasic GPS() instruction
to read the GPS16X-HVS. To use the PPS functionality, some data loggers
need an updated clock chip. The clock chip is factory replaced (refer to
Assistance page for more information). Data loggers with the following serial
numbers need an updated chip:
Data Logger Serial Number
CR1000M < 20409
CR800 Series < 7920
CR3000 < 3168
In August 2014, Garmin changed the PPS output signal from 5 V to 3 V. Units
with serial numbers greater than 1A4189318 have a 3 V PPS output signal.
Because of this, the CR800-series, CR1000, and CR3000 data loggers need the
A300 power and signal converter to use the PPS signal output. The A300 is
NOT required for the CR6-series, CR1000X, or CR300-series data loggers.
1.3 Common Accessories
The following common accessories are described at
www.campbellsci.com/gps16x-hvs:
•GPS16X-HVS Magnetic Mount
•CM235 Magnetic Mounting Stand
•A200 Sensor to PC Interface
•A300 Power and Signal Converter
•DB9 Female to Terminal Block with Hood and Hardware Kit
2. Precautions
•READ AND UNDERSTAND the Safety section at the front of this
manual.
•When wiring the GPS16X-HVS, connect Ground before connecting 12V.
NOTE

GPS16X-HVS GPS Receiver
3
3. Initial Inspection
Upon receipt of the GPS16X-HVS, inspect the packaging and contents for
damage. File damage claims with the shipping company.
4. QuickStart
A video that describes data logger programming using Short Cut is available at:
www.campbellsci.com/videos/cr1000x-datalogger-getting-started-program-
part-3. Short Cut is an easy way to program your data logger to measure the
GPS16X-HVS and assign data logger wiring terminals. Short Cut is available
as a download on www.campbellsci.com. It is included in installations of
LoggerNet, RTDAQ, PC400, or PC200W.
The following procedure also describes using Short Cut to measure the
GPS16X-HVS.
1. Open Short Cut and select to create a new program.
2. Double-click the data logger model.
3. In the Available Sensors and Devices type GPS16X-HVS or find the
sensor in the Sensors > Miscellaneous Sensors folder. Double-click
GPS16X-HVS. Specify the Local time offset, whether to synchronize
datalogger clock to GPS clock, and the Maximum time difference
allowed between datalogger clock and GPS clock. You may also change
any of the default labels for the returned GPS values.

GPS16X-HVS GPS Receiver
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4. Click on the Wiring tab to see how the sensor is to be wired to the data
logger. Click OK after wiring the sensor.
5. Repeat steps three and four for other sensors. Click Next.
6. In Output Setup, type the scan rate, meaningful table names, and Data
Output Storage Interval.

GPS16X-HVS GPS Receiver
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7. Select the output options.
8. Click Finish and save the program. Send the program to the data logger if
the data logger is connected to the computer.
9. If the sensor is connected to the data logger, check the output of the sensor
in the data display in LoggerNet, RTDAQ, PC400, or PC200W to make
sure it is making reasonable measurements.
5. Specifications
Physical
Size: 86 mm (3.39 in) diameter, 42 mm (1.65 in) high
Weight: 181 g (6.4 oz) without cable, 332 g (11.7 oz) with 5 m
cable
Cable: PVC-jacketed, 5 m, foil-shielded, 8-conductor, 28 AWG
Electrical Characteristics
Input Voltage: 8.0 VDC to 40 VDC unregulated
Current Drain: 65 mA @ 12 VDC
GPS Receiver
Sensitivity: –185 dbW minimum
GPS Performance
Receiver: WAAS enabled; 12 parallel channel GPS receiver
continuously tracks and uses up to 12 satellites, 11 if
PPS is active

GPS16X-HVS GPS Receiver
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Acquisition Times (Approximate)
Reacquisition: Less than 2 s
Hot:1 s (all data known)
Warm: ~38 s (initial position, time and almanac known,
ephemeris unknown)
Cold: ~45 s
SkySearch: 5 min (no data known)
Sentence Rate: 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)
Dynamics: 999 knots 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 < 0.3 VDC
Environmental Characteristics
Temperature: –30 to 80 °C operational, –40 to 80 °C storage
6. Installation
6.1 Wiring
The GPS16X-HVS connects directly to a CR6-series, CR3000, CR1000X,
CR800-series, CR300-series, or CR1000 data logger (see TABLE 6-1).
However, if PPS is required, the A300 Power and Signal Converter may be
required for use with the CR800 series, CR1000, and CR3000. See Section

GPS16X-HVS GPS Receiver
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6.1.1, Using with an A300 (p. 8). The CR6 series, CR1000X series, and CR300
series do not require the A300.
Use the DB9-Male-to-Terminal-Block interface to connect the GPS16X-HVS
to the RS-232 port of the CR9000X CPU card. See TABLE 6-2.
To change the default settings, connect the GPS16X-HVS to a computer.
Either use the A200 interface to connect to a computer USB port or the
DB9-Female-to-Terminal-Block interface to connect to a computer serial port
(see Appendix A, Changing GPS16X-HVS Settings (p. A-1)).
TABLE 6-1. Data Logger Wiring
GPS16X-HVS Data Logger Function
Red 12V Power In
Black G Power Ground
Yellow Gor C(control terminal) Ground or
Power Switch
White Cor Uconfigured for Rx1TXD
Gray Cor Uconfigured for Tx or PPS1RXD or PPS
Blue GGround
Shield
⏚
Shield
1Uterminals are automatically configured by the measurement instruction.
FIGURE 6-1. CR1000 to GPS16X-HVS connection