Garmin 17N, 17HVS, 16-LVS, 16-HVS, 16A Technical Specification

GPS 16/17 SERIES
TECHNICAL
SPECIFICATIONS

Garmin International, Inc.

1200 E. 151st Street

Olathe, KS 66062 USA

190-00228-20, Revision C

October 2005



© Copyright 2002, 2005 Garmin Ltd. or its subsidiaries
Garmin International, Inc.

1200 East 151

st

Street, Olathe, Kansas 66062, U.S.A.
Tel. [phone] or 800/800.1020
Fax [phone]

Garmin (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9DL, U.K.
Tel. [phone]
Fax [phone]

Garmin Corporation
No. 68, Jangshu 2

nd

Road, Shijr, Taipei County, Taiwan
Tel. [phone]
Fax [phone]

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Garmin Ltd. or its subsidiaries and may not be used without the express permission of Garmin.

Web site address: www.garmin.com

RECORD OF REVISIONS

Revision Revision

Description ECO #

Date

A 1/29/02 Initial Release -­B 11/7/02 Add GPS 16A 19451
C 10/26/05 GPS 17N has been replaced by the GPS 17HVS.

33833

The GPS 16A has been discontinued.

190-00228-20 GPS 16/17 Technical Specifications Rev. C

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TABLE OF CONTENTS

1 Introduction....................................................................................................1

1.1 Caution.............................................................................................................................................. 1

1.2 FCC Compliance...............................................................................................................................1

1.3 Limited Warranty..............................................................................................................................2

1.4 Overview...........................................................................................................................................3

1.5 Features.............................................................................................................................................3

1.6 GPS 16/17 Series ..............................................................................................................................4

1.6.1 GPS 16LVS & 16HVS ..........................................................................................................4

1.6.2 GPS 16A................................................................................................................................4

1.6.3 GPS 17HVS & 17N...............................................................................................................4

1.7 Technical Specifications ...................................................................................................................5

1.7.1 Physical Characteristics.........................................................................................................5

1.7.1.1 Size..........................................................................................................................5

1.7.1.2 Weight.....................................................................................................................5

1.7.1.3 Cable........................................................................................................................5

1.7.1.4 Color........................................................................................................................5

1.7.1.5 Case Material...........................................................................................................5

1.7.2 Electrical Characteristics .......................................................................................................5

1.7.2.1 Input Voltage...........................................................................................................5

1.7.2.2 Input Current...........................................................................................................5

1.7.2.3 GPS Receiver Sensitivity ........................................................................................5

1.7.3 Environmental Characteristics...............................................................................................5

1.7.4 GPS Performance...................................................................................................................6

1.7.4.1 Receiver................................................................................................................... 6

1.7.4.2 Acquisition Times ...................................................................................................6

1.7.4.3 Sentence Rate..........................................................................................................6

1.7.4.4 Accuracy..................................................................................................................6

1.7.5 Interfaces ...............................................................................................................................7

1.7.5.1 Port 1.......................................................................................................................7

1.7.5.2 Port 2.......................................................................................................................7

1.7.5.3 PPS (Not available on GPS 16A or GPS 17N)........................................................7

1.7.5.4 Power Control (Not available on GPS 16A)............................................................7

2 GPS 16/17 Wiring and Pinouts .....................................................................8

2.1 GPS 16/17 Pinout..............................................................................................................................8

2.2 GPS 16/17 Wiring Diagrams.............................................................................................................9

3 Mechanical Characteristics & Mounting....................................................10

3.1 GPS 16............................................................................................................................................10

3.2 GPS 17............................................................................................................................................11

4 Software Interface .......................................................................................12

4.1 Received NMEA 0183 Sentences...................................................................................................12

4.1.1 Almanac Information (ALM)..............................................................................................12

4.1.2 Sensor Initialization Information (PGRMI).........................................................................13

4.1.3 Sensor Configuration Information (PGRMC)......................................................................13

4.1.4 Additional Sensor Configuration Information (PGRMC1)..................................................14

4.1.5 Output Sentence Enable/Disable (PGRMO)........................................................................14

4.1.6 Tune DGPS Beacon Receiver (PSLIB) ...............................................................................15

4.2 Transmitted NMEA 0183 Sentences...............................................................................................16

4.2.1 Sentence Transmission Rate................................................................................................16

4.2.1.1 GPS 16LVS, 16HVS, and GPS 17HVS (not 17N)................................................16

4.2.1.2 GPS 16A................................................................................................................16

4.2.2 Transmitted Time.................................................................................................................17

190-00228-20 GPS 16/17 Technical Specifications Rev. C

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4.2.3 Global Positioning System Almanac Data (ALM)..............................................................17

4.2.4 Global Positioning System Fix Data (GGA)........................................................................17

4.2.5 GPS DOP and Active Satellites (GSA) ...............................................................................18

4.2.6 GPS Satellites in View (GSV).............................................................................................18

4.2.7 Recommended Minimum Specific GPS/TRANSIT Data (RMC).......................................18

4.2.8 Track Made Good and Ground Speed (VTG)......................................................................18

4.2.9 Geographic Position (GLL) .................................................................................................19

4.2.10 Estimated Error Information (PGRME)...............................................................................19

4.2.11 GPS Fix Data Sentence (PGRMF).......................................................................................19

4.2.12 Map Datum (PGRMM)........................................................................................................19

4.2.13 Sensor Status Information (PGRMT) ..................................................................................20

4.2.14 3D Velocity Information (PGRMV)....................................................................................20

4.2.15 DGPS Beacon Information (PGRMB).................................................................................20

4.3 Baud Rate Selection........................................................................................................................21

4.4 One-Pulse-Per-Second (PPS) Output.............................................................................................. 21

4.5 Received RTCM Data.....................................................................................................................21

Appendix A: Earth Datums ..............................................................................22

Appendix B: Binary Phase Output Format .....................................................25

Satellite Data Record.......................................................................................................................25

Position Record...............................................................................................................................26

Receiver Measurement Record .......................................................................................................27

Sample C Code................................................................................................................................28

Appendix C: Ephemeris Data download (Programming Example)...............29

Synopsis..........................................................................................................................................29

Garmin Binary Format Review.......................................................................................................29

Ephemeris Download Procedure.....................................................................................................30

TX Packet: Ephemeris Data Request...................................................................................30

RX Packet: Acknowledgement............................................................................................ 30

RX Packet: Number of Data Packets to Expect...................................................................30

TX Packet: Acknowledgement............................................................................................30

RX Packet: Ephemeris Data ................................................................................................31

TX Packet: Download Complete.........................................................................................33

Appendix D: Sensor Configuration Software.................................................34

Downloading the Sensor Configuration Software...........................................................................34

Selecting a Model............................................................................................................................34

Connecting to the Sensor ................................................................................................................34

File Menu........................................................................................................................................35

Comm Menu ...................................................................................................................................35

Config Menu...................................................................................................................................35

View Menu........................................................................................................................................0

Help Menu.........................................................................................................................................0

LIST OF TABLES AND FIGURES

GPS 16LVS & 16HVS................................................................................................................................... 4

GPS 16A......................................................................................................................................................... 4

GPS 17HVS & 17N........................................................................................................................................ 4

Table 1: GPS 16/17 Wire Pinout.................................................................................................................... 8

Figure 1: Computer Serial Port Interconnection............................................................................................. 9

Figure 2. PDA Serial Port Interconnection..................................................................................................... 9

Figure 3. Basic NMEA Device Interconnection............................................................................................. 9

Figure 4. GPS 16 Dimensions...................................................................................................................... 10

Figure 5. GPS 16 Magnetic Mount Attachment........................................................................................... 10

Figure 6. GPS 17 Dimensions...................................................................................................................... 11

Table 2: NMEA 0183 Output Sentence Order and Size...............................................................................16

Table 3: Characters per Second for Available Baud Rates........................................................................... 16

190-00228-20 GPS 16/17 Technical Specifications Rev. C

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1 INTRODUCTION

1.1 Caution

The GPS system is operated by the government of the United States, which is solely responsible for its
accuracy and maintenance. Although the GPS 16/17 is a precision electronic NAVigation AID (NAVAID),
any NAVAID can be misused or misinterpreted, and therefore become unsafe. Use these products at your
own risk. To reduce the risk, carefully review and understand all aspects of these Technical Specifications
before using the GPS 16/17. When in actual use, carefully compare indications from the GPS to all
available navigation sources including the information from other NAVAIDs, visual sightings, charts, etc.
For safety, always resolve any discrepancies before continuing navigation.

1.2 FCC Compliance

The GPS 16/17 complies with Part 15 of the FCC interference limits for Class B digital devices FOR
HOME OR OFFICE USE. These limits are designed to provide reasonable protection against harmful
interference in a residential installation, and are more stringent than “outdoor” requirements.

Operation of this device is subject to the following conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received, including interference that may
cause undesired operation.

This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications. However, there
is no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

The GPS 16/17 does not contain any user-serviceable parts. Unauthorized repairs or modifications could
result in permanent damage to the equipment, and void your warranty and your authority to operate this
device under Part 15 regulations.

190-00228-20 GPS 16/17 Technical Specifications Rev. C

Page 1

1.3 Limited Warranty

This Garmin product is warranted to be free from defects in materials or workmanship for one year from
the date of purchase. Within this period, Garmin will at its sole option repair or replace any components
that fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts or
labor, provided that the customer shall be responsible for any transportation cost. This warranty does not
cover failures due to abuse, misuse, accident, or unauthorized alteration or repairs.

THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF
ALL OTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY, INCL UDI N G AN Y
LIABILITY ARISING UNDER ANY WARRANTY OF MERCHA NTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU
SPECIFIC LEGAL RIGHTS, WHICH MAY VARY FROM STATE TO STATE.

IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR
CONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR
INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT. Some states do not
allow the exclusion of incidental or consequential damages, so the above limitations may not apply to you.

Garmin retains the exclusive right to repair or replace the unit or software or offer a full refund of the
purchase price at its sole discretion. SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE
REMEDY FOR ANY BREACH OF WARRANTY.

To obtain warranty service, contact your local Garmin authorized dealer or call Garmin Product Support at
one of the numbers listed below for shipping instructions and an RMA tracking number. The unit should be
securely packed with the tracking number clearly written on the outside of the package. The unit should
then be sent, freight charges prepaid, to any Garmin warranty service station. A copy of the original sales
receipt is required as the proof of purchase for warranty repairs.

Garmin International, Inc.
1200 E 151st Street, Olathe, Kansas 66062 U.S.A.
Tel. [phone] or 800/800.1020
Fax. [phone]

Garmin (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9DL U.K.
Tel. [phone]
Fax [phone]

Online Auction Purchases: Products sold through online auctions are not eligible for rebates or other
special offers from Garmin. Online auction confirmations are not accepted for warranty verification. To
obtain warranty service, an original or copy of the sales receipt from the original retailer is required.
Garmin will not replace missing components from any package purchased through an online auction.

International Purchases: A separate warranty is provided by international distributors for units purchased
outside the United States. This warranty is provided by the local in-country distributor and this distributor
provides local service for your unit. Distributor warranties are only valid in the area of intended
distribution. Units purchased in the United States or Canada must be returned to the Garmin service center
in the United Kingdom, the United States, Canada, or Taiwan for service.

190-00228-20 GPS 16/17 Technical Specifications Rev. C

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1.4 Overview

The GPS 16/17 series products are complete GPS sensors including embedded receiver and antenna,
designed for a broad spectrum of OEM (Original Equipment Manufacture) system applications. Based on
the proven technology found in other Garmin 12-channel GPS receivers, the GPS 16/17 tracks up to 12
satellites at a time while providing fast time-to-first-fix, one-second navigation updates, and low power
consumption. This generation of GPS sensors adds the capability of FAA Wide Area Augmentation System
(WAAS) differential GPS. The GPS 16/17’s far-reaching capability meets the sensitivity requirements of
land navigation as well as the dynamics requirements of high-performance aircraft.

The GPS 16/17 design uses the latest technology and high-level circuit integration to achieve superior
performance while minimizing space and power requirements. All critical components of the system
including the RF/IF receiver hardware and the digital baseband are designed and manufactured by Garmin
to ensure the quality and capability of the GPS. The hardware capability combined with software
intelligence makes the GPS 16/17 easy to integrate and use.

The GPS 16/17 series products are designed to withstand rugged operating conditions and are waterproof to
IEC 60529 IPX7, immersion in 1 meter of water for 30 minutes. These complete GPS receivers require
minimal additional components to be supplied by an OEM or system integrator. A minimum system must
provide the GPS with a source of power and a clear view of the GPS satellites. The system may
communicate with the GPS via two full-duplex communication channels. Internal FLASH memory allows
the GPS to retain critical data such as satellite orbital parameters, last-known position, date and time. End
user interfaces such as keyboards and displays are the responsibility of the application designer.

Note: Due to parts availability, the GPS 17N has been replaced by the GPS 17HVS. References to the GPS
17N are for current GPS 17N product information.

Note: The GPS 16A has been discontinued. References to the GPS 16A are for current GPS 16A product
information. A comparable replacement sensor is the GPS 18-5Hz.

1.5 Features

• 12-channel GPS receiver tracks and uses up to 12 satellites for fast, accurate positioning and low

power consumption.

• Differential DGPS capability using real-time WAAS or RTCM corrections yielding 3 to 5 meter

position accuracy (see Section 1.7 Technical Specifications).

• Compact, rugged design ideal for applications with minimal space.

• May be remotely mounted in an out-of-the-way location.

• Receiver position information can be displa yed directly on a chartplotter or PC.

• User initialization is not required. Once the unit is installed and has established a location fix, the unit

automatically produces navigation data.

• User-configurable navigation mode (2-dimensional or 3-dimensional fix).

• (Not Available on GPS 16A or GPS 17N) Highly accurate one-pulse-per-second (PPS) output for

precise timing measurements. Pulse width is configurable in 20 millisecond increments from 20 ms to
980 ms with 1 µs accuracy.

• Configurable for binary format carrier phase data output on COM 1 port.

• Flexible input voltage levels of 3.3 VDC to 6.0 VDC with over-voltage protection in the GPS 16LVS;

6.0 VDC to 40 VDC in the GPS 16HVS and GPS 17HVS; and 8.0 VDC to 40 VDC in the
GPS 16A and 17N.

• FLASH-based program and non-volatile memory. New software revisions available through Web site

download. Non-volatile memory does not require battery backup.

• Waterproof design allows continuous exposure to the prevailing weather conditions at most locations.

190-00228-20 GPS 16/17 Technical Specifications Rev. C

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1.6 GPS 16/17 Series

There are several different products in the GPS 16/17 product series. Refer below for a description of each
product and the differences between the products.

1.6.1 GPS 16LVS & 16HVS

Both the GPS 16LVS and GPS 16 HVS are black with a white logo.

GPS 16LVS & 16HVS

1.6.2 GPS 16A

Due to parts availability, the GPS 16A has been discontinued. References to the GPS 16A are for current
GPS 16A product information. The GPS 16A is white with a black logo.

GPS 16A

1.6.3 GPS 17HVS & 17N

Due to parts availability, the GPS 17N has been replaced by the GPS 17HVS. References to the GPS 17N
are for current GPS 17N product information. Both units are white with a black logo.

GPS 17HVS & 17N

190-00228-20 GPS 16/17 Technical Specifications Rev. C

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1.7 Technical Specifications

Specifications are subject to change without notice.

1.7.1 Physical Characteristics

1.7.1.1 Size

• GPS 16: 3.39” (86 mm) diameter, 1.65” (42 mm) high

• GPS 17: 3.39” (86 mm) diameter, 4.25” (108 mm) high

1.7.1.2 Weight

• GPS 16LVS & 16H VS: 6.4 oz. (181 g) without cable; 11.7 oz. (332 g) with 5 m e t er cable

• GPS 16A: 9.6 oz. (272 g) without cable; 17.6 oz. (500 g) with 5 meter cable

• GPS 17HVS: 6.7 oz. (190 g) without cable; 16.4 oz. (465 g) with 30 foot cabl e

• GPS 17N: 6.4 oz. (181 g) without cabl e; 16.0 oz. ( 45 4 g) wi t h 30 foot ca ble

1.7.1.3 Cable

• GPS 16LVS & 16HVS: Black PVC-jacketed, 5 meter, foil-shielded, 8-conductor 28 AWG with

RJ-45 termination

• GPS 16A: White Teflon-jacketed, 5 meter, foil-shielded, 5-conductor 22 AWG

with bare wire termination

• GPS 17HVS: White PVC-jacketed, 30 foot, foil-shielded, 8-conductor 28 AWG with

RJ-45 termination

• GPS 17N: White PVC-jacketed, 30 foot, foil-shielded 8-conductor 28 AWG with

bare wire termination

1.7.1.4 Color

• GPS 16LVS & 16HVS: Black with white logos

• GPS 17HVS, 17N, & 16A: White with black logos

1.7.1.5 Case Material

Polycarbonate thermoplastic that is waterproof to IEC 60529 IPX7 level (immersion in 1 meter of water for
30 minutes)

1.7.2 Electrical Characteristics

1.7.2.1 Input Voltage

• GPS 16LVS: 3.3 VDC to 6.0 VDC regulated, < 100 mV ripple

• GPS 16HVS & 17HVS 6.0 VDC to 40 VD C unregulated

• GPS 16A & 17N 8.0 VDC to 40 VDC unregulated

1.7.2.2 Input Current

• GPS 16HVS, GPS 17HVS 100 mA @ 6 VDC;

65 mA @ 12 VDC;
28 mA @ 40 VDC

• GPS 16A, & GPS 17N 100 mA @ 8 VDC

65 mA @ 12 VDC;
28 mA @ 40 VDC

• GPS 16LVS: 80 mA typical

1.7.2.3 GPS Receiver Sensitivity

-165 dBW minimum

1.7.3 Environmental Characteristics

• Operating Temperature: -30°C to +80°C

• Storage Temperature: -40°C to +90°C

190-00228-20 GPS 16/17 Technical Specifications Rev. C

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1.7.4 GPS Performance

1.7.4.1 Receiver

WAAS Enabled™; 12 parallel channel GPS receiver continuously tracks and uses up to 12 satellites (up to

11 with PPS active) to compute and update your position.

1.7.4.2 Acquisition Times

• Reacquisition: Less than 2 seconds

• Warm: Approx. 15 seconds (all data known)

• Cold: Approx. 45 seconds (initial position, time, and almanac known; ephemeris unknown)

• AutoLocate®: 5 minutes (almanac known; initial position and time unknown)

• SkySearch: 5 minutes (no data known)

1.7.4.3 Sentence Rate

• GPS 16LVS, 16HVS,

17HVS, & 17N: 1 second default; NMEA 0183 output interval configurable from 1 to 900

seconds in 1-second increments

• GPS 16A: 1 second independent update rate, propagated every 200 milliseconds

1.7.4.4 Accuracy

• GPS Standard Positioning Service (SPS )

Position: < 15 meters, 95% typical (100 meters with Selective Availability on)
Velocity: 0.1 knot RMS steady state

• DGPS (USCG/RTCM)

Position: 3–5 meters, 95% typical
Velocity: 0.1 knot RMS steady state

• DGPS (WAAS)

Position: < 3 meters, 95% typical
Velocity: 0.1 knot RMS steady state

• PPS Time (Not available on GPS 16A or 17N): ±1 microsecond at rising edge of PPS pulse

(subject to Selective Availability)

• Dynamics: 999 knots velocity (only limited at altitude greater than 60,000 feet), 6g dynamics

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1.7.5 Interfaces

• True RS-232 output (TTL output for GPS 16A and 17N), asynchronous serial input compatible with

RS-232 or TTL voltage levels, RS-232 polarity.

• User selectable baud rate: 300, 600, 1200, 2400, 4800, 9600, or 19200. 38400 available for GPS 16A.

1.7.5.1 Port 1

• Configurable between NMEA 0183 Versions 2.00 and 3.00

• ASCII output sentences GPALM, GPGGA, GPGLL, GPGSA, GPGSV, GPRMC, GPVTG (NMEA-

approved sentences); PGRMB, PGRME, PGRMF, PGRMM, PGRMT, and PGRMV (Garmin
proprietary sentences)

• NMEA 0183 Outputs (see Section 4.2 Transmitted NMEA 0183 Sentences for full protocol

specifications)
Position, velocity and time
Receiver and satellite status
Differential Reference Station ID and RTCM Data age
Geometry and error estimates

• NMEA 0183 Inputs (see Section 4.1 Received NMEA 0183 Sentences for full protocol specifications)

Initial position, date and time (not required)
Earth datum and differential mode configuration command, PPS Enable, GPS satellite almanac

• Configurable for binary data output including GPS carrier phase data

1.7.5.2 Port 2

Real-time Differential Correction input (RTCM SC-104 message types 1, 2, 3, 7, and 9)

1.7.5.3 PPS (Not available on GPS 16A or GPS 17N)

1 Hz pulse, programmable width, 1 µs accuracy

1.7.5.4 Power Control (Not available on GPS 16A)

• Off: Open circuit

• On: Ground, or pull to low logic level < 0.3 volts

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2 GPS 16/17 WIRING AND PINOUTS

2.1 GPS 16/17 Pinout

The GPS 16LVS, GPS 16HVS, and GPS 17HVS sensors utilize an 8-pin RJ-45 plug. The GPS 16A and
GPS 17N feature a stripped and pre-tinned, 5-wire cable assembly for connection flexibility. The following
is a functional description of each wire in the cable assembly.

RJ-45

Pin

#

Wire

Color

Signal

Name

Description

1 Red POWER GPS 16LVS: Regulated +3.3 to +6 VDC. Typical operating current is 80 mA. An

internal 6.8 V transient zener diode and a positive temperature coefficient
thermistor protect from transients and over-voltages. With voltages greater than

6.8 VDC the zener will draw several amps of current through the thermistor,
causing it to heat rapidly and eventually power the unit off, unless an external
fuse blows first. When proper supply voltages are returned, the thermistor will
cool and allow the GPS 16LVS to operate. The CMOS/TTL output buffers are
powered by Vin; therefore, a 3.3 VDC supply will create 3.3 V logic output
levels.
GPS 16HVS, GPS 16A, GPS 17HVS, & GPS 17N: Vin can be an unregulated

6.0 VDC (8.0 VDC for GPS 16A and GPS 17N) to 40 VDC, optimized for 12
VDC. Typical operating power is 800 mW. This voltage drives a switching
regulator with a nominal 5.0 VDC output, which powers the internal linear

regulators, and the CMOS output buffers.
2 Black GROUND Power and Signal Ground
3 Yellow REMOTE

POWER
ON/OFF

(N/A for GPS 16A) External Power Control Input. Activ e (ON) if less than 0.3

VDC. Inactive (OFF) if open-circuit. 51 kΩ internal pull-up resistor to the

voltage on the POWER input. Activation of this input powers the internal

regulators off and drops the supply current be low 20mA in the GPS 16LVS, and

below 1 mA in the GPS 16HVS, GPS 17HVS, and GPS 17N. This input is

intended to be driven by an open-collector output.
4 Blue PORT 1

DATA IN

First Serial Asynchronous Input. RS-232 compatible with maximum input

voltage range -25 < V < 25. This input may also be directly connected to standard

3 to 5 VDC CMOS logic. The low signal voltage requirement is < 0.9 V, and the

high signal voltage requirement is > 2.1 V. Maximum load impedance is 4.7 kΩ.

This input may be used to receive serial initialization/ configuration data as

Received NMEA 0183 Sentences.

5 White PORT 1

DATA
OUT

specified in Section 4.1

First Serial Asynchronous Output. This RS-232 compatible (TTL level on GPS

16A and GPS 17N) output normally provides serial data which is formatted per

NMEA 0183, Version 3.0. This output is also capable of outputting phase data

information, see Appendix C for details. The NMEA 0183 baud rate is switchable

in the range of 300 to 19200 baud (38400 for GPS 16A). The default baud rate is

19200 for GPS 16A and 4800 for all other products.
6 Gray PPS (N/A for GPS 16A and GPS 17N) One-Pulse-Per-Second Output. Typical voltage

rise and fall times are 300 ns. Impedance is 250 Ω. Open circuit output voltage is

low=0 V and high=Vin in the GPS 16LVS, and low=0 V and high=5.0 V in the

GPS 16HVS and GPS 17HVS. The default format is a 100 ms wide active-high

pulse at a 1 Hz rate; the pulse width is configurable in 20 ms increments. Rising

edge is synchronized to the start of each GPS second. This output will provide a

nominal 700 mVp-p signal into a 50 Ω load. The pulse time measured at the 50%

voltage point will be about 50 ns earlier with a 50 Ω load than with no load.
7 Green PORT 2

DATA IN

Second Serial Asynchronous Input, electrically identical to PORT 1 DATA IN.

This input may be used to receive serial differential GPS data formatted per

RTCM SC-104 Recommended Standards For Differential Navstar GPS Service,

8 Violet PORT 2

DATA

Version 2.2 (see Section 4.5

(N/A for GPS 16A) Second Serial Asynchronous Output, electrically identical to

PORT 1 DATA OUT. Reserved for future use.

Received RTCM Data for details).

OUT

Table 1: GPS 16/17 Wire Pinout

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