User manual GARMIN GPS 16A 17 TECHNICAL SPECIFICATION

[. . . ] GPS 16/17 SERIES TECHNICAL SPECIFICATIONS Garmin International, Inc. 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 151st Street, Olathe, Kansas 66062, U. S. A. [. . . ] $PGRMI, <1>, <2>, <3>, <4>, <5>, <6>, <7>*hh<CR><LF> <1> <2> <3> <4> <5> <6> <7> Latitude, ddmm. mmm format (leading zeros must be transmitted) Latitude hemisphere, N or S Longitude, dddmm. mmm format (leading zeros must be transmitted) Longitude hemisphere, E or W Current UTC date, ddmmyy format Current UTC time, hhmmss format Receiver Command, A = Auto Locate, R = Unit Reset 4. 1. 3 Sensor Configuration Information (PGRMC) The $PGRMC sentence provides information used to configure the GPS sensor's operation. Configuration parameters are stored in non-volatile memory and retained between power cycles. The GPS sensor will echo this sentence upon its receipt if no errors are detected. If an error is detected, the echoed PGRMC sentence will contain the current default values. Current default values can also be obtained by sending $PGRMCE to the GPS sensor. $PGRMC, <1>, <2>, <3>, <4>, <5>, <6>, <7>, <8>, <9>, <10>, <11>, <12>, <13>, <14>*hh<CR><LF> <1> <2> <3> Fix mode, A = automatic, 2 = 2D exclusively (host system must supply altitude), 3 = 3D exclusively Altitude above/below mean sea level, -1500. 0 to 18000. 0 meters Earth datum index. If the user datum index (96) is specified, fields <4> through <8> must contain valid values. Otherwise, fields <4> through <8> must be null. Refer to Appendix A: Earth Datums for a list of earth datums and the corresponding earth datum index. User earth datum semi-major axis, 6360000. 000 to 6380000. 000 meters (. 001 meters resolution) User earth datum inverse flattening factor, 285. 0 to 310. 0 (10-9 resolution) User earth datum delta x earth centered coordinate, -5000. 0 to 5000. 0 meters (1 meter resolution) User earth datum delta y earth centered coordinate, -5000. 0 to 5000. 0 meters (1 meter resolution) User earth datum delta z earth centered coordinate, -5000. 0 to 5000. 0 meters (1 meter resolution) Differential mode, A = automatic (output DGPS data when available, non-DGPS otherwise), D = differential exclusively (output only differential fixes) NMEA 0183 Baud rate, 1 = 1200, 2 = 2400, 3 = 4800, 4 = 9600, 5 = 19200, 6 = 300, 7 = 600 Velocity filter, 0 = No filter, 1 = Automatic filter, 2 to 255 = Filter time constant (e. g. , 10 = 10 second filter) <4> <5> <6> <7> <8> <9> <10> <11> <12> <13> PPS mode, 1 = Off, 2 = 1 Hz PPS pulse length, 0 though 48 = (n+1)*20 ms. Example: n = 4 corresponds to a 100 ms wide pulse <14> Dead reckoning valid time 1to 30 (sec) All configuration changes take effect after receipt of a valid value except baud rate and PPS mode. Baud rate and PPS mode changes take effect on the next power cycle or an external reset event. 190-00228-20 GPS 16/17 Technical Specifications Page 13 Rev. C 4. 1. 4 Additional Sensor Configuration Information (PGRMC1) The $PGRMC1 sentence provides additional information used to configure the GPS sensor operation. Configuration parameters are stored in non-volatile memory and retained between power cycles. The GPS sensor will echo this sentence upon its receipt if no errors are detected. If an error is detected, the echoed PGRMC1 sentence will contain the current default values. Current default values can also be obtained by sending $PGRMC1E to the GPS sensor. $PGRMC1, <1>, <2>, <3>, <4>, <5>, <6>, <7>, <8>, <9>*hh<CR><LF> <1> NMEA 0183 output time 1-900 (sec) <2> Binary Phase Output Data, 1 = Off, 2 = On. <3> Automatic Position Averaging when Stopped, 1 = Off, 2 = On <4> No Effect (DGPS beacon frequency: 0. 0, 283. 5­325. 0 kHz in 0. 5 kHz steps) <5> No Effect (DGPS beacon bit rate:0, 25, 50, 100, or 200 bps) <6> No Effect (DGPS beacon scanning, 1 = Off, 2 = On) <7> NMEA 0183 version 2. 30 mode indicator, 1 = Off, 2 = On <8> DGPS mode, W = WAAS Only, N = None (DGPS disabled) <9> Power Save Mode, P = Power Save mode, N = Normal <10> Adaptive Transmission Enabled, 1 = Off, 2 = On <11> Auto Power Off, 1 = Off, 2 = On <12> Power On with External Charger, 1 = Off, 2 = On <13> PPS Auto Off Mode, 1 = Off, 2 = On Configuration changes take effect immediately, with the exception of Binary Phase Output Data, which takes effect on the next power cycle or a reset event. A reset can be commanded by sending the sentence "$PGRMI, , , , , , , R" (refer to Section 4. 1. 2 Sensor Initialization Information (PGRMI)). If the GPS sensor is in the Binary data mode, it is necessary to send the following eight-byte data stream to temporarily change the data format to NMEA 0183. Then follow by sending a PGRMC1 sentence that turns off the Binary Phase Output Data format: 10 0A 02 26 00 CE 10 03 (Hexadecimal) 4. 1. 5 Output Sentence Enable/Disable (PGRMO) The $PGRMO sentence provides the ability to enable and disable specific output sentences. [. . . ] Sensor Configuration (F6): Opens the Sensor Configuration Window, shown to the right. Many of the fields in this window should be left alone. Please refer to the beginning of this document for specific information about some of these fields. For the most part, this window is used to enter a new Latitude, Longitude, and Altitude for the sensor. [. . . ]