Garmin GPS 16-HVS Technical Specifications - Page 18
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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.
$PGRMC1,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>,<13>,<14>*hh<CR><LF>
<1>
NMEA 0183 output time 1-900 (sec)
<2>
Binary Phase Output Data, 1 = Off, 2 = On.
<3>
Automatic Position Averaging when Stopped, 1 = Off, 2 = On
<4>
DGPS beacon frequency: 0.0, 283.5–325.0 kHz in 0.5 kHz steps
<5>
DGPS beacon bit rate: 0, 25, 50, 100, or 200 bps
<6>
DGPS beacon scanning, 1 = Off, 2 = On
<7>
NMEA 0183 version 2.30 mode indicator, 1 = Off, 2 = On
<8>
DGPS mode, W = WAAS Only, N = None (DGPS disabled)
<9>
Power Save Mode, P = Power Save mode, N = Normal
<10>
No Effect (Adaptive Transmission Enabled, 1 = Off, 2 = On)
<11>
No Effect (Auto Power Off, 1 = Off, 2 = On)
<12>
No Effect (Power On with External Charger, 1 = Off, 2 = On)
<13>
PPS Auto Off Mode, 1 = Off, 2 = On
<14>
Velocity Filter, 1 = Off, 2 = On (default value). When Off, the speed and North and East velocities are not
filtered (or masked to 0.0) at low speeds.
Configuration changes take effect immediately, with the exception of Binary Phase Output Data and PPS Auto Off
Mode, which take effect on the next power cycle or a reset event. A reset can be commanded by sending the
sentence "$PGRMI,,,,,,,R" (see Section
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. The following sentences
are enabled at the factory: GPGGA, GPGSA, GPGSV, GPRMC, and PGRMT. This sentence is not intended for
turning on and off sentences as a means of polling while the receiver is in use; instead, it is intended to allow
systems integrators to initialize the GPS receiver so it produces only the sentences required by the target application.
$PGRMO,<1>,<2>*hh<CR><LF>
<1>
Target sentence description (e.g., PGRMT, GPGSV, etc.)
<2>
Target sentence mode, where:
0 = disable specified sentence
1 = enable specified sentence
2 = disable all output sentences
3 = enable all output sentences (except GPALM)
4 = restore factory default output sentences
The following notes apply to the PGRMO input sentence:
1. If the target sentence mode is '2' (disable all), '3' (enable all), or '4' (restore defaults), the target sentence
description is not checked for validity. In this case, an empty field is allowed (e.g., $PGRMO,,3), or the mode
field may contain from 1 to 5 characters.
2. If the target sentence mode is '0' (disable) or '1' (enable), the target sentence description field must be an
identifier for one of the sentences that can be output by the GPS sensor.
3. If either the target sentence mode field or the target sentence description field is not valid, the PGRMO sentence
will have no effect.
4. $PGRMO,GPALM,1 will cause the GPS sensor to transmit all stored almanac information. All other NMEA
0183 sentence transmission will be suspended temporarily.
5. $PGRMO,,G will cause the COM port to change to Garmin Data Transfer format for the duration of the power
cycle. You must enable Garmin Data Transfer format to update the GPS 16/17 series products.
190-00228-21
4.1.2 Sensor Initialization Information
GPS 16/17 Technical Specifications
Page 14
(PGRMI)). If the GPS sensor is in the
Rev. A