Receivers with PPS require PULL UP (Pull-Hi) 10K

Please note:
This circuit exists inside of the receiver with a logic level of 0,7V at the GPS_1PPS input to output PPS_OUT. Use a "Pull Up" 10K Ohm resistor with the desired logic level (V_System) for the ajustment (red circle).



Example:
V_System=5V
PPS (Puls Per Second)
Periode 1Hz, Signal 100ms