Mechanical Interface; Figure 43. Nmea/Pps Input Voltages; Figure 44. Nmea/Pps/Ground Communication - quanergy M8 User Manual

Additional notes, with reference to Figure 43:
• NMEA/PPS inputs are clamped between 0 V and 3.3 V by an overvoltage protection device.
• For zero or negative (clamped to zero) RS-232 inputs, the input is seen as logic 0.
• Voltage levels are:
–12 V to 0 is a valid input for logic 0.
+3.3 V to +12 V is a valid input for logic 1.
• You can connect TTL UART or RS-232 signals to the NMEA/PPS inputs.

Mechanical Interface

The M12 3-pin connector on the interface cable enables communication between the
GPS receiver and the M8 sensor. The three pins are for the NMEA message, PPS signal,
and ground. That signal carries through the three pins of the M19 IP67-rated connector
and finally to the M8 sensor, as shown in Figure 44. For complete pinout information, refer
to the "Connectors and Pins" section starting on page 27.

Figure 43. NMEA/PPS Input Voltages

Figure 44. NMEA/PPS/Ground Communication

M8 Sensor User Guide, QPN 96-00001 Rev K Page 68