M12 Oncore Users Guide Supplement - deetc - isel
M12 Oncore Users Guide Supplement - deetc - isel
M12 Oncore Users Guide Supplement - deetc - isel
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5.2 Main power<br />
Motorola GPS Products<br />
<strong>M12</strong> <strong>Oncore</strong> User’s <strong>Guide</strong> <strong>Supplement</strong><br />
Revision 1.0 01/25/00<br />
Voltage 2.8 to 3.2 Vdc regulated<br />
50 mV maximum peak-to-peak ripple<br />
Power 0.225 W maximum (without antenna)<br />
5.3 Backup power<br />
Voltage 1.8 V to 3.2 V<br />
Current 5 mA typical @ 2.7 V<br />
Retention Backup power retains date, time, position, satellite data,<br />
oscillator learning table and operating mode<br />
5.4 Antenna feed power out of RF connector<br />
Voltage 2.7 V to 3.2 V over current range for 3 V antenna<br />
Current 15 mA to 80 mA<br />
5.5 1PPS signal definition<br />
Level 0 V to 3 V<br />
Time mark Rising edge<br />
Width 200 ms typical<br />
5.6 Serial I/O signal definition<br />
Levels 0 V to 3 V, active low<br />
Flags set in serial data when limits exceeded<br />
Baud rate 9600 (Motorola Binary)<br />
Parity None<br />
Data bits 8<br />
Start/stop bits 1<br />
6. RF Characteristics of Receiver<br />
6.1 Dynamic range 27 dB<br />
4800 (NMEA)<br />
6.2 Saturation -110 dBm<br />
7