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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>*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, 283.5–325.0 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

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. The following

sentences are enabled at the factory: GPGGA, GPGSA, GPGSV, GPRMC, and PGRMT.

$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. The Garmin mode is required for GPS 16/17 series product software updates.

190-00228-20

4.1.2 Sensor Initialization Information

GPS 16/17 Technical Specifications

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(PGRMI)). If the GPS sensor is

Rev. C